Zone Forecast Product
Issued by NWS Boise, ID
Issued by NWS Boise, ID
485
FPUS55 KBOI 102031
ZFPBOI
Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
230 PM MDT Thu Sep 10 2026
Spot temperatures are for tonight, Friday, Friday night, and
Saturday.
IDZ011-110400-
West Central Mountains-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Increasing clouds. Lows 42 to 53.
.FRIDAY...Sunny. Highs 62 to 76.
.FRIDAY NIGHT...Decreasing clouds. Lows 38 to 49.
.SATURDAY...Mostly sunny. Highs 64 to 77.
.SATURDAY NIGHT...A slight chance of thunderstorms. Rain showers.
Chance of rain 80 percent. Lows 39 to 45.
.SUNDAY...Patchy fog in the morning. Rain showers in the morning,
then partly cloudy with a chance of rain showers with a slight
chance of thunderstorms in the afternoon. Chance of rain
80 percent. Much cooler with highs 47 to 60.
.SUNDAY NIGHT...Partly cloudy. A slight chance of rain showers in
the evening. Areas of fog. Chance of rain 20 percent. Lows 31 to
41.
.MONDAY THROUGH TUESDAY...Areas of fog in the morning. Areas of
fog. Mostly clear. Highs 51 to 66. Lows 32 to 41.
.TUESDAY NIGHT...Decreasing clouds. Areas of fog after midnight.
Lows 34 to 43.
.WEDNESDAY THROUGH THURSDAY...Areas of fog in the morning. Areas
of fog through the day. Mostly clear. Highs 62 to 77. Lows 38 to
47.
&&
TEMPERATURE
McCall 42 69 37 71
$$
=
IDZ013-110400-
Boise Mountains-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Partly cloudy. Lows 40 to 55.
.FRIDAY...Sunny. Highs 65 to 79.
.FRIDAY NIGHT...Mostly clear. Lows 38 to 53.
.SATURDAY...Sunny. Highs 70 to 85.
.SATURDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of rain showers. Chance of
rain 40 percent. Lows 37 to 48. Breezy.
.SUNDAY...Partly cloudy. A chance of rain showers in the morning.
Chance of rain 40 percent. Much cooler with highs 50 to 65.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Areas of fog. Lows
29 to 44. Highs 56 to 71.
.TUESDAY NIGHT...Increasing clouds. Lows 32 to 47.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 63 to 77.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 35 to 50.
Highs 69 to 83.
&&
TEMPERATURE
Idaho City 44 79 39 83
$$
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IDZ028-110400-
Camas Prairie-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Decreasing clouds. Lows 44 to 51. West winds 10 to
15 mph with gusts to 30 mph this evening, becoming light after
midnight.
.FRIDAY...Sunny. Highs 73 to 78. Breezy. West winds 10 to 20 mph
with gusts to 35 mph.
.FRIDAY NIGHT...Mostly clear. Lows 38 to 45. Northwest winds
10 to 15 mph with gusts to 30 mph in the evening, becoming light
after midnight.
.SATURDAY...Sunny. Highs 78 to 83. Light winds in the morning,
becoming southwest 10 to 15 mph with gusts to 30 mph in the
afternoon.
.SATURDAY NIGHT...Partly cloudy. Lows 42 to 47. Breezy. West
winds 10 to 20 mph with gusts to 35 mph.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Much cooler. Highs 60 to
65. Lows 31 to 36. Windy.
.MONDAY...Sunny. Highs 61 to 66.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Patchy fog through the
day. Lows 32 to 37. Highs 66 to 71.
.TUESDAY NIGHT...Increasing clouds. Lows 36 to 41.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 71 to 80. Lows
41 to 46.
&&
TEMPERATURE
Fairfield 45 76 38 81
$$
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IDZ033-110400-
Upper Weiser River-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Increasing clouds. Lows 54 to 59. Southeast winds up
to 10 mph this evening, becoming light after midnight.
.FRIDAY...Sunny. Highs 73 to 79. Light winds.
.FRIDAY NIGHT...Partly cloudy. Lows 49 to 55. Light winds.
.SATURDAY...Mostly sunny. Highs 76 to 81. East winds up to 10 mph
in the morning, shifting to southwest in the afternoon.
.SATURDAY NIGHT...Showers likely with a slight chance of
thunderstorms. Chance of rain 70 percent. Lows 46 to 51. Breezy.
Northwest winds 10 to 20 mph with gusts to 35 mph.
.SUNDAY...Partly cloudy with a chance of rain showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Much cooler with highs 60 to 67.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Areas of fog after midnight. Lows 40 to 45.
.MONDAY AND MONDAY NIGHT...Mostly clear. Areas of fog in the
morning. Areas of fog after midnight. Highs 62 to 68. Lows 40 to
45.
.TUESDAY...Patchy fog in the morning. Sunny. Highs 66 to 72.
.TUESDAY NIGHT...Decreasing clouds. Lows 43 to 48.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 71 to 81. Lows
47 to 52.
&&
TEMPERATURE
Council 56 78 51 80
Cambridge 55 79 49 81
$$
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ORZ064-110400-
Oregon Lower Treasure Valley-
230 PM MDT Thu Sep 10 2026 /130 PM PDT Thu Sep 10 2026/
.TONIGHT...Mostly clear. Lows 56 to 61. Northwest winds 10 to
15 mph. Gusts to 25 mph this evening.
.FRIDAY...Sunny. Highs 79 to 84. West winds up to 10 mph.
.FRIDAY NIGHT...Decreasing clouds. Lows 47 to 54. Light winds.
.SATURDAY...Sunny. Highs 80 to 85. Northwest winds up to 10 mph
in the morning, shifting to east around 10 mph in the afternoon.
Gusts to 20 mph.
.SATURDAY NIGHT...A slight chance of thunderstorms in the
evening. Showers likely. Chance of rain 60 percent. Lows 49 to
54. Northwest winds 10 to 15 mph with gusts to 35 mph.
.SUNDAY...Mostly sunny. Cooler with highs 66 to 71. Breezy.
.SUNDAY NIGHT THROUGH TUESDAY...Mostly clear. Areas of fog. Lows
42 to 47. Highs 66 to 74.
.TUESDAY NIGHT...Decreasing clouds. Patchy fog after midnight.
Lows 44 to 50.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 74 to 79.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 46 to 52.
Highs 76 to 81.
&&
TEMPERATURE
Ontario 56 82 47 82
$$
=
IDZ012-110400-
Lower Treasure Valley-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Decreasing clouds. Lows 54 to 60. Southeast winds up
to 10 mph this evening, shifting to northwest after midnight.
.FRIDAY...Sunny. Highs 78 to 83. Northwest winds up to 10 mph
with gusts to 20 mph.
.FRIDAY NIGHT...Mostly clear. Lows 48 to 53. Light winds.
.SATURDAY...Sunny. Highs 81 to 86. Southeast winds up to 10 mph.
Gusts to 20 mph in the afternoon.
.SATURDAY NIGHT...Increasing clouds. Rain showers likely with a
slight chance of thunderstorms in the evening, then a chance of
rain showers after midnight. Chance of rain 60 percent. Lows
48 to 53. Breezy. Northwest winds 10 to 20 mph. Gusts to 40 mph
in the evening, decreasing to 30 mph after midnight.
.SUNDAY...Mostly sunny. Much cooler with highs 65 to 70. Breezy.
.SUNDAY NIGHT THROUGH TUESDAY NIGHT...Mostly clear. Areas of fog.
Lows 41 to 50. Highs 65 to 74.
.WEDNESDAY...Areas of fog in the morning. Sunny. Highs 73 to 78.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 47 to 52.
Highs 77 to 82.
&&
TEMPERATURE
Caldwell 55 81 48 86
$$
=
IDZ014-110400-
Upper Treasure Valley-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Decreasing clouds. Lows 53 to 58. Southeast winds
10 to 15 mph this evening, shifting to west after midnight.
.FRIDAY...Sunny. Highs 79 to 84. Northwest winds 10 to 15 mph
with gusts to 25 mph.
.FRIDAY NIGHT...Mostly clear. Lows 47 to 55. North winds up to
10 mph with gusts to 25 mph in the evening, shifting to east
after midnight.
.SATURDAY...Sunny. Highs 85 to 91. South winds 10 to 15 mph.
Gusts to 30 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy. A slight chance of thunderstorms
in the evening, then a chance of showers after midnight. Chance
of rain 40 percent. Lows 48 to 53. Windy. West winds 15 to 25 mph
with gusts to 45 mph.
.SUNDAY...Mostly sunny. Much cooler with highs 66 to 71. Breezy.
.SUNDAY NIGHT...Mostly clear. Areas of fog after midnight. Lows
41 to 46. Breezy.
.MONDAY...Areas of fog in the morning. Sunny. Highs 65 to 70.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Areas of fog through
the day. Lows 41 to 46. Highs 69 to 74.
.TUESDAY NIGHT...Increasing clouds. Patchy fog after midnight.
Lows 44 to 49.
.WEDNESDAY...Patchy fog in the morning. Sunny. Highs 73 to 78.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 47 to 52.
Highs 79 to 84.
&&
TEMPERATURE
Boise 57 80 55 87
Mountain Home 54 83 50 90
$$
=
IDZ016-110400-
Western Magic Valley-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Mostly cloudy. Lows 55 to 62. Southwest winds 10 to
15 mph with gusts to 25 mph.
.FRIDAY...Sunny. Highs 77 to 82. West winds 10 to 15 mph with
gusts to 25 mph.
.FRIDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
47 to 54. Northwest winds up to 10 mph with gusts to 25 mph in
the evening, shifting to southeast after midnight.
.SATURDAY...Sunny. Highs 84 to 89. Southeast winds around 10 mph
in the morning, shifting to west in the afternoon. Gusts to
25 mph.
.SATURDAY NIGHT...Partly cloudy. Lows 48 to 53. Windy. West winds
10 to 15 mph with gusts to 30 mph in the evening, increasing to
15 to 25 mph with gusts to 45 mph after midnight.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Much cooler. Highs 64 to
69. Lows 40 to 45. Breezy.
.MONDAY...Sunny. Highs 64 to 69.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Patchy fog through the
day. Lows 39 to 44. Highs 69 to 74.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows 42 to 47.
Highs 74 to 79.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 45 to 50.
Highs 79 to 84.
&&
TEMPERATURE
Jerome 58 78 51 85
Twin Falls 62 78 52 85
$$
=
IDZ029-110400-
Owyhee Mountains-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Partly cloudy. Isolated showers and thunderstorms this
evening. Chance of rain 20 percent. Lows 50 to 59.
.FRIDAY...Sunny. Highs 73 to 79.
.FRIDAY NIGHT...Mostly clear. Lows 48 to 56.
.SATURDAY...Sunny. Highs 76 to 82. Windy. Southwest winds around
25 mph with gusts to 40 mph in the afternoon.
.SATURDAY NIGHT...Increasing clouds. A slight chance of
thunderstorms in the evening. A chance of rain showers. Chance of
rain 50 percent. Lows 43 to 49. Windy. West winds around 25 mph
with gusts to 40 mph.
.SUNDAY...Mostly sunny. Much cooler with highs 59 to 64. Windy.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Patchy fog through the
day. Lows 37 to 44. Highs 58 to 63.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 37 to 45. Highs
61 to 68.
.TUESDAY NIGHT...Increasing clouds. Lows 42 to 49.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 67 to 77. Lows
45 to 52.
$$
=
IDZ015-110400-
Southwest Highlands-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Mostly cloudy with isolated showers and thunderstorms
this evening, then partly cloudy after midnight. Chance of rain
20 percent. Lows 53 to 58. Breezy.
.FRIDAY...Sunny. Highs 78 to 83.
.FRIDAY NIGHT...Decreasing clouds. Lows 48 to 54.
.SATURDAY...Sunny. Highs 80 to 87. Windy. Southwest winds around
25 mph with gusts to 40 mph in the afternoon.
.SATURDAY NIGHT...Partly cloudy. Lows 44 to 49. Windy. Southwest
winds around 25 mph in the evening. Gusts to 40 mph.
.SUNDAY THROUGH MONDAY NIGHT...Mostly clear. Much cooler. Highs
61 to 68. Lows 37 to 43. Windy.
.TUESDAY...Patchy fog in the morning. Sunny. Highs 66 to 71.
.TUESDAY NIGHT AND WEDNESDAY...Partly cloudy. Lows 42 to 47.
Highs 70 to 75.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 45 to 50.
Highs 76 to 81.
$$
=
IDZ030-110400-
Southern Twin Falls County-
230 PM MDT Thu Sep 10 2026
.TONIGHT...Mostly cloudy. Isolated showers and thunderstorms this
evening. Chance of rain 20 percent. Lows 58 to 63. Breezy.
.FRIDAY...Sunny. Highs 77 to 82.
.FRIDAY NIGHT...Mostly clear. Lows 49 to 56.
.SATURDAY...Sunny. Highs 84 to 89. Breezy.
.SATURDAY NIGHT...Partly cloudy. Lows 47 to 52. Breezy.
.SUNDAY AND SUNDAY NIGHT...Mostly clear. Much cooler. Highs 64 to
69. Lows 38 to 43. Breezy.
.MONDAY...Sunny. Highs 63 to 68.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 38 to 43. Highs
68 to 73.
.TUESDAY NIGHT...Partly cloudy. Lows 41 to 46.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 73 to 83. Lows
45 to 50.
$$
=
ORZ062-110400-
Baker County-
130 PM PDT Thu Sep 10 2026
.TONIGHT...Increasing clouds. Lows 44 to 56. Northwest winds
10 to 15 mph with gusts to 25 mph.
.FRIDAY...Sunny. Highs 71 to 79. Northwest winds up to 10 mph.
.FRIDAY NIGHT...Partly cloudy. Lows 37 to 51. Light winds.
.SATURDAY...Mostly sunny. Highs 72 to 81. West winds up to 10 mph
in the morning, shifting to south with gusts to 25 mph in the
afternoon.
.SATURDAY NIGHT...Rain showers with a slight chance of
thunderstorms. Chance of rain 80 percent. Lows 41 to 49. Breezy.
Northwest winds 10 to 20 mph with gusts to 35 mph.
.SUNDAY...Partly cloudy with a chance of rain showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
30 percent. Much cooler with highs 57 to 66.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Areas of fog. Lows 32 to 44.
.MONDAY THROUGH TUESDAY...Areas of fog in the morning. Patchy fog
in the evening, then areas of fog through the day. Mostly clear.
Highs 61 to 71. Lows 33 to 45.
.TUESDAY NIGHT...Decreasing clouds. Areas of fog after midnight.
Lows 35 to 48.
.WEDNESDAY...Areas of fog in the morning. Sunny. Highs 69 to 77.
.WEDNESDAY NIGHT AND THURSDAY...Mostly clear. Lows 39 to 52.
Highs 73 to 80.
&&
TEMPERATURE
Baker City 44 74 37 77
$$
=
ORZ061-110400-
Harney County-
130 PM PDT Thu Sep 10 2026
.TONIGHT...Mostly clear. Lows 44 to 51. West winds 10 to 15 mph.
Gusts to 30 mph this evening.
.FRIDAY...Patchy fog in the morning. Sunny. Highs 71 to 81. West
winds 10 to 15 mph. Gusts to 25 mph in the afternoon.
.FRIDAY NIGHT...Mostly clear. Lows 39 to 50. West winds up to
10 mph. Gusts to 25 mph in the evening.
.SATURDAY...Mostly sunny. Highs 70 to 79. Windy. Southwest winds
10 to 15 mph with gusts to 25 mph in the morning, increasing to
15 to 25 mph with gusts to 40 mph in the afternoon.
.SATURDAY NIGHT...Rain showers likely with a slight chance of
thunderstorms in the evening, then a chance of rain showers after
midnight. Chance of rain 60 percent. Lows 39 to 46. Windy. West
winds 20 to 30 mph with gusts to 45 mph.
.SUNDAY...Mostly sunny. Much cooler with highs 56 to 62. Windy.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Areas of fog through the
day. Lows 32 to 40. Highs 58 to 64.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Lows 34 to 43. Highs
62 to 69.
.TUESDAY NIGHT...Partly cloudy. Lows 37 to 46.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 68 to 78. Lows
40 to 48.
&&
TEMPERATURE
Burns 44 77 39 76
$$
=
ORZ063-110400-
Malheur County-
230 PM MDT Thu Sep 10 2026 /130 PM PDT Thu Sep 10 2026/
.TONIGHT...Partly cloudy. Isolated showers and thunderstorms this
evening. Chance of rain 20 percent. Lows 49 to 58. Breezy. West
winds 10 to 20 mph. Gusts to 30 mph this evening.
.FRIDAY...Sunny. Highs 77 to 85. West winds 10 to 15 mph.
.FRIDAY NIGHT...Mostly clear. Lows 46 to 54. North winds up to
10 mph with gusts to 20 mph in the evening, becoming light after
midnight.
.SATURDAY...Mostly sunny. Highs 77 to 85. Breezy. Southwest winds
10 to 20 mph. Gusts to 40 mph in the afternoon.
.SATURDAY NIGHT...A slight chance of thunderstorms in the
evening. Mostly cloudy with a chance of rain showers. Chance of
rain 50 percent. Lows 43 to 51. Windy. West winds 15 to 25 mph
with gusts to 40 mph.
.SUNDAY...Mostly sunny. Much cooler with highs 61 to 68. Windy.
.SUNDAY NIGHT AND MONDAY...Mostly clear. Areas of fog through the
day. Lows 36 to 44. Highs 61 to 67.
.MONDAY NIGHT AND TUESDAY...Mostly clear. Patchy fog through the
day. Lows 37 to 46. Highs 66 to 71.
.TUESDAY NIGHT...Partly cloudy. Lows 41 to 49.
.WEDNESDAY THROUGH THURSDAY...Mostly clear. Highs 70 to 80. Lows
44 to 52.
$$
=