Routine Fire Wx Fcst (With/Without 6-10 Day Outlook)
Issued by NWS Pendleton, OR
Issued by NWS Pendleton, OR
625
FNUS56 KPDT 172111
FWFPDT
Fire Weather Planning Forecast for NE Oregon and SE Washington
National Weather Service Pendleton OR
211 PM PDT Thu Sep 17 2026
.DISCUSSION...Showers and isolated thunderstorms will continue
through this evening from central oregon northeastward through the
Wallowas. Another round of showers and isolated thunderstorms is
possible on Friday from the Blue Mountains eastward. Then, dry
weather is expected for much of the upcoming week, with warming
temperatures through the weekend.
***Winds are 20 foot 10 minute averages ***
***CWR: Chance of wetting rain 0.10 or greater ***
***Ventilation Index is derived from transport wind
multiplied by the mixing height in 100`s of ft.
Categories are a generalized indicator and users
are encourage to develop criteria that are
suitable and representative of dispersion
conditions in their local area of interest.
Categories: low (< 200), moderate (200-500),
high (500-700), and very high (> 700).
-Note: Max transport winds may not occur
at the same time as max mixing height. ***
WAZ695-181115-
East Washington South Central Cascade Mountains-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....43-50.
* Max humidity........62-77 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (60-96) decreasing to low (26-46) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....69-77...except 61-69 ridges.
* Min humidity........32-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 7 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (39-75) increasing to low to moderate
(126-214) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-50.
* Max humidity........69-84 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (53-95) decreasing to low (25-36) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....71-79...except 63-70 ridges.
* Min humidity........30-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming southwest
up to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-26) increasing to low (121-183) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 47 to 52. Highs 67 to 79. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 47 to 53. Highs 63 to 76. West winds
up to 5 mph.
.TUESDAY...Partly cloudy. Lows 41 to 49. Highs 54 to 66. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 38 to 45. Highs 53 to 64.
Southeast winds 1 to 6 mph.
.THURSDAY...Mostly cloudy. Lows 41 to 46. Highs 57 to 68. Terrain
driven winds less than 5 mph.
$$
WAZ690-181115-
Kittitas Valley-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........57-72 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming
northwest up to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming
northwest 1 to 5 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (44-92) decreasing to low (32-48) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....73-79...except 65-73 ridges.
* Min humidity........33-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 1 to 6 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Northwest winds 1 to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (35-75) increasing to low (84-198) in the
afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........60-75 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (63-109) decreasing to low (29-43) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-80...except 65-74 ridges.
* Min humidity........33-39 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......4000 ft agl.
* Transport winds.....Northwest around 5 mph shifting to the south
in the afternoon.
* Ventilation Index...Low (25-28) increasing to low (97-153) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 52 to 57. Highs 74 to 81. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 53 to 58. Highs 74 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 49 to 54. Highs 66 to 74.
Northwest winds 3 to 8 mph.
.WEDNESDAY...Partly cloudy. Lows 45 to 50. Highs 62 to 69. North
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 46 to 51. Highs 65 to 72. Terrain
driven winds less than 5 mph.
$$
WAZ694-181115-
Yakama Alpine District-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-51.
* Max humidity........67-82 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph becoming west
1 to 5 mph after midnight.
* Ridges/upr slopes....light winds less than 5 mph becoming west 2
to 7 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (64-114) decreasing to low (25-36) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....73-79...except 64-74 ridges.
* Min humidity........30-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....Northwest winds 1 to 6 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (31-63) increasing to low to moderate
(126-230) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....46-52.
* Max humidity........63-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (42-84) decreasing to low (25-28) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....75-81...except 66-76 ridges.
* Min humidity........28-35 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25) increasing to low (132-184) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 47 to 55. Highs 71 to 83. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 48 to 55. Highs 69 to 81. West winds
up to 5 mph.
.TUESDAY...Partly cloudy. Lows 43 to 49. Highs 60 to 73. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 40 to 47. Highs 58 to 69. East
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 42 to 48. Highs 61 to 72. Terrain
driven winds less than 5 mph.
$$
ORZ691-WAZ691-181115-
Lower Columbia Basin of Oregon-Lower Columbia Basin of Washington-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the evening.
* Min temperature.....51-56.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 2 to 7 mph.
* Ridges/upr slopes....Southwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Southwest around 10 mph.
* Ventilation Index...Low (47-95) decreasing to low (29-45) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....75-81.
* Min humidity........29-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (33-101) increasing to low to moderate
(159-339) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....50-55.
* Max humidity........66-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 5 mph.
* Ridges/upr slopes....West winds 1 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (50-122) decreasing to low (25-35) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-82.
* Min humidity........23-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...South winds 1 to 5 mph in the morning
becoming upslope less than 5 mph.
* Ridges/upr slopes....Southwest winds up to 5 mph in the morning
becoming light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25-32) increasing to low (121-187) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 52 to 57. Highs 79 to 85. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 53 to 58. Highs 79 to 85. Southwest
winds up to 5 mph.
.TUESDAY...Partly cloudy. Lows 50 to 55. Highs 71 to 78. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 48 to 53. Highs 68 to 75.
Northwest winds 3 to 8 mph.
.THURSDAY...Partly cloudy. Lows 48 to 53. Highs 71 to 77. West
winds 1 to 6 mph.
$$
ORZ692-WAZ692-181115-
Northern Blue Mountains of Oregon-Blue Mountains of Washington-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and a slight chance of thunderstorms in the
evening, then a slight chance of showers after midnight.
* Min temperature.....45-53.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (26-46) decreasing to low (25-30) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the afternoon.
* Max temperature.....66-75...except 60-65 ridges.
* Min humidity........41-53 percent...except 51-65 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......5500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (30-64) increasing to low to moderate
(157-259) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-53.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (43-81) decreasing to low (25-29) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....70-78...except 64-69 ridges.
* Min humidity........34-45 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
northwest in the afternoon.
* Ventilation Index...Low (25-26) increasing to low to moderate
(172-260) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 46 to 54. Highs 72 to 81. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 48 to 56. Highs 72 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 54. Highs 65 to 74. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 51. Highs 63 to 72.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 44 to 51. Highs 67 to 76. Terrain
driven winds less than 5 mph.
$$
ORZ693-WAZ693-181115-
Canyon Grasslands of Wallowa County-
Southeast Washington Grande Ronde Valley-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....43-51.
* Max humidity........82-97 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (27-43) decreasing to low (25) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the afternoon.
* Max temperature.....66-75...except 59-67 ridges.
* Min humidity........43-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (25-28) increasing to low to moderate
(165-239) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers in the evening. A slight chance of showers
after midnight.
* Min temperature.....44-52.
* Max humidity........75-90 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest around 5 mph.
* Ventilation Index...Low (47-67) decreasing to low (25-26) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....69-78...except 61-69 ridges.
* Min humidity........34-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 5 mph shifting to the north in
the afternoon.
* Ventilation Index...Low (25-26) increasing to moderate (207-309)
in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 44 to 54. Highs 73 to 83. Terrain
driven winds less than 5 mph.
.MONDAY...Clear. Lows 46 to 56. Highs 74 to 84. South winds 1 to
6 mph.
.TUESDAY...Mostly clear. Lows 46 to 54. Highs 69 to 79. West
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 51. Highs 67 to 76. Terrain
driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 43 to 51. Highs 71 to 80. South
winds 2 to 7 mph.
$$
ORZ701-181115-
Eastern Columbia River Gorge of Oregon-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....48-53.
* Max humidity........80-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph...except west 3
to 8 mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....Southwest winds 3 to 8 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (107-155) decreasing to low (33-53) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....77-82...except 72-78 ridges.
* Min humidity........29-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph...except west 4 to 9
mph in the eastern Columbia River Gorge.
* Ridges/upr slopes....Northwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (45-103) increasing to moderate (258-368)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....47-52.
* Max humidity........63-78 percent.
* Humidity recovery...Good...except Moderate ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph. In the eastern
Columbia River Gorge, west winds 2 to 7 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (102-134) decreasing to low (27-39) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....79-84.
* Min humidity........24-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West around 5 mph.
* Ventilation Index...Low (25-27) increasing to low (113-153) in
the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 50 to 55. Highs 82 to 87. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 52 to 57. Highs 77 to 82. West winds
1 to 6 mph.
.TUESDAY...Partly cloudy. Lows 47 to 52. Highs 70 to 75. West
winds 4 to 9 mph.
.WEDNESDAY...Partly cloudy. Lows 44 to 49. Highs 69 to 74.
Northeast winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 46 to 51. Highs 72 to 77. Terrain
driven winds less than 5 mph.
$$
ORZ702-181115-
East Slopes of the Mt. Hood National Forest-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....44-50.
* Max humidity........78-93 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 6 mph.
* Ridges/upr slopes....light winds less than 5 mph becoming west 1
to 6 mph after midnight.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (101-139) decreasing to low (43-55) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....71-79...except 64-74 ridges.
* Min humidity........30-42 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5000 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (53-83) increasing to low to moderate
(179-275) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-51.
* Max humidity........53-68 percent.
* Humidity recovery...Moderate.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (71-111) decreasing to low (27-37) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....76-82...except 69-77 ridges.
* Min humidity........24-32 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25) increasing to low (132-168) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 49 to 55. Highs 72 to 83. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 49 to 56. Highs 68 to 81. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 43 to 50. Highs 59 to 73. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 40 to 46. Highs 59 to 70.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 43 to 49. Highs 62 to 73. Terrain
driven winds less than 5 mph.
$$
ORZ695-181115-
Eagle Cap Wilderness-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....45-50...except 39-46 ridges.
* Max humidity........82-95 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northeast around 5 mph.
* Ventilation Index...Low (29-59) decreasing to low (25-26) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly cloudy. A
chance of showers and a slight chance of thunderstorms in the
afternoon.
* Max temperature.....62-72...except 51-62 ridges.
* Min humidity........45-59 percent...except 56-68 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................20 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....North around 5 mph.
* Ventilation Index...Low (26-46) increasing to low to moderate
(127-241) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....45-50...except 39-46 ridges.
* Max humidity........79-94 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...North winds 1 to 5 mph.
* Ridges/upr slopes....North winds 1 to 6 mph.
* CWR.................10 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (52-82) decreasing to low (25-36) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....66-76...except 55-65 ridges.
* Min humidity........37-51 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....North winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (25-45) increasing to moderate (254-392)
in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 42 to 51. Highs 63 to 78. North
winds 1 to 5 mph.
.MONDAY...Mostly clear. Lows 45 to 53. Highs 63 to 78. South
winds 1 to 5 mph.
.TUESDAY...A slight chance of showers. Mostly clear. Lows 44 to
51. Highs 59 to 74. West winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 41 to 48. Highs 58 to 72. South
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 42 to 50. Highs 60 to 75. South
winds 4 to 9 mph.
$$
ORZ694-181115-
Grande Ronde Valley of Oregon-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Partly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight.
* Min temperature.....43-48.
* Max humidity........94-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....30 percent (chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (40-70) decreasing to low (25-32) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon.
* Max temperature.....70-75.
* Min humidity........44-49 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* Ridges/upr slopes....North winds 2 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....North 5 to 10 mph.
* Ventilation Index...Low (29-53) increasing to moderate (245-329)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....43-48.
* Max humidity........85-98 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 5 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....Northwest winds 2 to 6 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (72-106) decreasing to low (25-36) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-79.
* Min humidity........31-36 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 3
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-28) increasing to moderate (253-341)
in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 44 to 49. Highs 77 to 82. Southeast
winds up to 5 mph.
.MONDAY...Mostly clear. Lows 47 to 52. Highs 79 to 84. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 46 to 51. Highs 74 to 79. Northwest
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 42 to 47. Highs 72 to 77. West
winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 43 to 48. Highs 75 to 80.
Southeast winds 3 to 8 mph.
$$
ORZ699-181115-
Western Forested Blue Mountains-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight.
* Min temperature.....42-48.
* Max humidity........88-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................40 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (28-66) decreasing to low (25-32) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the afternoon.
* Max temperature.....65-71...except 58-65 ridges.
* Min humidity........41-53 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......5500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (34-64) increasing to moderate (245-329)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....41-47.
* Max humidity........70-85 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (85-121) decreasing to low (25-30) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-76...except 64-70 ridges.
* Min humidity........29-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-26) increasing to low to moderate
(179-387) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 44 to 50. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 47 to 53. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 45 to 50. Highs 65 to 74. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 41 to 46. Highs 63 to 72.
Terrain driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 42 to 48. Highs 67 to 76. South
winds 2 to 7 mph.
$$
ORZ696-181115-
John Day Valley-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy. Showers likely and a slight
chance of thunderstorms in the evening, then a slight chance of
showers after midnight.
* Min temperature.....45-50.
* Max humidity........83-96 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................50 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (40-72) decreasing to low (25-27) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....67-75...except 62-67 ridges.
* Min humidity........34-41 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......6000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-43) increasing to moderate (249-343)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....44-49.
* Max humidity........65-79 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (100-132) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-79...except 67-72 ridges.
* Min humidity........25-30 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....South around 5 mph shifting to the northwest
in the afternoon.
* Ventilation Index...Low (25) increasing to low to moderate
(76-222) in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 47 to 52. Highs 76 to 84. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 49 to 54. Highs 76 to 84. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 47 to 52. Highs 69 to 78. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 43 to 48. Highs 68 to 77.
Southeast winds up to 5 mph.
.THURSDAY...Partly cloudy. Lows 44 to 49. Highs 72 to 81. South
winds up to 5 mph.
$$
ORZ700-181115-
Central Mountains of Oregon-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers in the
evening, then a slight chance of showers after midnight.
* Min temperature.....39-47.
* Max humidity........87-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 1 to 6 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................30 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (33-97) decreasing to low (25-40) after
midnight.
.FRIDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....68-76...except 61-66 ridges.
* Min humidity........30-37 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 2
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (29-47) increasing to moderate (263-415)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....37-47.
* Max humidity........71-86 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (126-182) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-79...except 66-71 ridges.
* Min humidity........23-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25) increasing to low (75-157) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 41 to 50. Highs 76 to 83. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 43 to 52. Highs 76 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 40 to 48. Highs 69 to 75. Northwest
winds up to 5 mph.
.WEDNESDAY...Mostly clear. Lows 37 to 45. Highs 68 to 74.
Southeast winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 38 to 46. Highs 72 to 77. South
winds 1 to 6 mph.
$$
ORZ703-181115-
Warm Springs Reservation-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy.
* Min temperature.....46-51.
* Max humidity........79-89 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Southwest winds 2 to 7 mph.
* Ridges/upr slopes....Southwest winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (66-126) decreasing to low (28-52) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....74-81...except 62-70 ridges.
* Min humidity........26-32 percent...except 32-45 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (36-82) increasing to moderate (254-370)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....45-50.
* Max humidity........65-78 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Northwest winds 2 to 7 mph in the evening
becoming drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 5 mph in the evening
becoming light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (114-162) decreasing to low (25-33) after
midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....76-83...except 67-75 ridges.
* Min humidity........21-28 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph.
* Ventilation Index...Low (25) increasing to low (137-179) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 50 to 55. Highs 77 to 85. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 51 to 56. Highs 74 to 85. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 45 to 50. Highs 65 to 76. West
winds 2 to 7 mph.
.WEDNESDAY...Partly cloudy. Lows 42 to 47. Highs 64 to 74. East
winds 2 to 7 mph.
.THURSDAY...Partly cloudy. Lows 44 to 49. Highs 67 to 77.
Southeast winds up to 5 mph.
$$
ORZ704-181115-
Northern Deschutes National Forest-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the evening.
* Min temperature.....40-45.
* Max humidity........84-99 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 2 to 7 mph.
* Ridges/upr slopes....West winds 2 to 7 mph.
* CWR.................10 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (68-106) decreasing to low (33-47) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-77...except 60-69 ridges.
* Min humidity........27-33 percent...except 32-47 percent ridges.
* 20-foot winds.......
* Valleys/lwr slopes...West winds 1 to 5 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West around 10 mph.
* Ventilation Index...Low (47-77) increasing to moderate (247-391)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....39-45.
* Max humidity........67-81 percent.
* Humidity recovery...Good.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (91-141) decreasing to low (25-27) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....76-82...except 65-74 ridges.
* Min humidity........21-31 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......5500 ft agl.
* Transport winds.....Southwest around 5 mph shifting to the
southeast in the afternoon.
* Ventilation Index...Low (25) increasing to low (156-188) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 43 to 50. Highs 73 to 84. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 45 to 51. Highs 69 to 82. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 40 to 45. Highs 61 to 74. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Partly cloudy. Lows 37 to 43. Highs 62 to 72. East
winds up to 5 mph.
.THURSDAY...Partly cloudy. Lows 39 to 45. Highs 64 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ705-181115-
Southern Deschutes National Forest-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers in the evening, then a slight chance of showers
after midnight.
* Min temperature.....35-41.
* Max humidity........94-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....West winds 1 to 6 mph.
* CWR.................40 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (53-95) decreasing to low (25-36) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....68-73...except 59-66 ridges.
* Min humidity........32-40 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 1
to 5 mph in the afternoon.
* Ridges/upr slopes....Northwest winds 1 to 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6500 ft agl.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (32-52) increasing to moderate (295-401)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Mostly clear.
* Min temperature.....34-42...except 39-45 ridges.
* Max humidity........74-89 percent...except 62-77 percent ridges.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......Near surface.
* Transport winds.....West 5 to 10 mph.
* Ventilation Index...Low (91-179) decreasing to low (25) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....72-78...except 64-71 ridges.
* Min humidity........21-27 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......6000 ft agl.
* Transport winds.....South around 5 mph.
* Ventilation Index...Low (25) increasing to low (85-177) in the
afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 36 to 46. Highs 73 to 81. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 38 to 48. Highs 71 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Partly cloudy. Lows 35 to 43. Highs 64 to 74. Terrain
driven winds less than 5 mph.
.WEDNESDAY...Mostly clear. Lows 33 to 40. Highs 64 to 73. Terrain
driven winds less than 5 mph.
.THURSDAY...Partly cloudy. Lows 34 to 43. Highs 66 to 75. Terrain
driven winds less than 5 mph.
$$
ORZ697-181115-
Central Blue Mountains-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....39-45.
* Max humidity........92-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................10 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (74-110) decreasing to low (25-35) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
chance of showers and thunderstorms in the afternoon.
* Max temperature.....64-69...except 58-64 ridges.
* Min humidity........38-50 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 5 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......6500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (43-71) increasing to moderate (332-480)
in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy. A slight chance of showers in
the evening.
* Min temperature.....39-45.
* Max humidity........75-88 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......Near surface.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low (112-180) decreasing to low (25-37) after
midnight.
.SATURDAY...
* Sky/weather.........Mostly sunny.
* Max temperature.....70-75...except 64-70 ridges.
* Min humidity........27-34 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-30) increasing to moderate (272-394)
in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 42 to 48. Highs 70 to 78. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 44 to 50. Highs 71 to 79. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 43 to 49. Highs 67 to 73. Northwest
winds up to 5 mph.
.WEDNESDAY...Mostly clear. Lows 39 to 46. Highs 66 to 72.
Southeast winds up to 5 mph.
.THURSDAY...Partly cloudy. Lows 40 to 47. Highs 67 to 74.
Southeast winds 1 to 6 mph.
$$
ORZ698-181115-
Southern Blue Mountains-
211 PM PDT Thu Sep 17 2026
.TONIGHT...
* Sky/weather.........Mostly cloudy. A chance of showers and a
slight chance of thunderstorms in the evening.
* Min temperature.....39-44.
* Max humidity........93-100 percent.
* Humidity recovery...Excellent.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....20 percent (slight chance).
* Mixing height.......500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (114-162) decreasing to low (31-45) after
midnight.
.FRIDAY...
* Sky/weather.........Mostly cloudy then becoming partly cloudy. A
slight chance of showers and thunderstorms in the afternoon.
* Max temperature.....64-70.
* Min humidity........36-44 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph becoming northwest 2
to 6 mph in the afternoon.
* Ridges/upr slopes....light less than 5 mph becoming northwest 3
to 6 mph in the afternoon.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......7500 ft agl.
* Transport winds.....Northwest around 10 mph.
* Ventilation Index...Low (49-73) increasing to moderate to high
(430-606) in the afternoon.
.FRIDAY NIGHT...
* Sky/weather.........Partly cloudy.
* Min temperature.....38-44.
* Max humidity........76-89 percent.
* Humidity recovery...Excellent...except Good ridges.
* 20-foot winds.......
* Valleys/lwr slopes...Drainage winds less than 5 mph.
* Ridges/upr slopes....light winds less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....10 percent (very low chance).
* Mixing height.......500 ft agl.
* Transport winds.....North around 10 mph.
* Ventilation Index...Low to moderate (170-244) decreasing to low
(31-41) after midnight.
.SATURDAY...
* Sky/weather.........Partly cloudy then becoming mostly sunny.
* Max temperature.....70-75.
* Min humidity........24-29 percent.
* 20-foot winds.......
* Valleys/lwr slopes...Upslope less than 5 mph.
* Ridges/upr slopes....light less than 5 mph.
* CWR.................0 percent.
* Chc of lightning....0 percent.
* Mixing height.......7000 ft agl.
* Transport winds.....Northwest 5 to 10 mph.
* Ventilation Index...Low (25-30) increasing to moderate (258-366)
in the afternoon.
.Forecast days 3 through 7......
.SUNDAY...Mostly clear. Lows 41 to 48. Highs 73 to 78. Terrain
driven winds less than 5 mph.
.MONDAY...Mostly clear. Lows 43 to 50. Highs 75 to 80. Terrain
driven winds less than 5 mph.
.TUESDAY...Mostly clear. Lows 42 to 49. Highs 71 to 77. Northwest
winds 1 to 6 mph.
.WEDNESDAY...Mostly clear. Lows 39 to 46. Highs 69 to 75.
Southeast winds 1 to 6 mph.
.THURSDAY...Partly cloudy. Lows 40 to 47. Highs 72 to 78.
Southeast winds 1 to 6 mph.
$$
.8-14 DAY OUTLOOK for Friday September 25 through Thursday October 1...
A greater chance of near to above normal temperatures and above
normal precipitation.
$$