Zone Forecast Product
Issued by NWS Boise, ID
Issued by NWS Boise, ID
543
FPUS55 KBOI 200908
ZFPBOI
Zone Forecasts for Southwest Idaho/Southeast Oregon
National Weather Service Boise ID
307 AM MDT Sat Sep 20 2025
Spot temperatures are for today, tonight, and Sunday.
IDZ011-201700-
West Central Mountains-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 72 to 85.
.TONIGHT...Partly cloudy. Lows 47 to 57.
.SUNDAY...Partly cloudy with a chance of rain showers in the
morning, then rain showers likely with a slight chance of
thunderstorms in the afternoon. Chance of rain 70 percent. Cooler
with highs 59 to 74.
.SUNDAY NIGHT...Rain showers likely with a slight chance of
thunderstorms in the evening, then mostly clear after midnight.
Patchy fog in the evening, then areas of fog after midnight.
Chance of rain 60 percent. Colder with lows 35 to 45.
.MONDAY...Areas of fog in the morning. Sunny. Highs 60 to 73.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 35 to 46. Highs 67 to 80.
.TUESDAY NIGHT...Clear. Lows 42 to 52.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 66 to 81. Lows
42 to 53.
&&
TEMPERATURE
McCall 79 47 67
$$
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IDZ013-201700-
Boise Mountains-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 72 to 86.
.TONIGHT...Increasing clouds. Lows 42 to 57.
.SUNDAY...Patchy fog in the morning. A chance of rain showers in
the morning, then rain showers likely with a slight chance of
thunderstorms in the afternoon. Chance of rain 70 percent. Highs
64 to 78.
.SUNDAY NIGHT...Partly cloudy with a chance of rain showers with
a slight chance of thunderstorms in the evening, then mostly
clear after midnight. Areas of fog after midnight. Chance of rain
30 percent. Colder with lows 32 to 47.
.MONDAY...Areas of fog in the morning. Sunny. Highs 61 to 76.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 33 to 46. Highs 68 to 82.
.TUESDAY NIGHT...Clear. Lows 37 to 52.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 69 to 84. Lows
38 to 53.
&&
TEMPERATURE
Idaho City 84 47 77
$$
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IDZ028-201700-
Camas Prairie-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 76 to 81. Southwest winds up to 10 mph.
.TONIGHT...Mostly cloudy. Areas of fog after midnight. Lows 44 to
49. Southwest winds up to 10 mph. Gusts to 20 mph in the evening.
.SUNDAY...Partly sunny. Areas of fog in the morning. A chance of
showers with a slight chance of thunderstorms in the afternoon.
Chance of rain 30 percent. Highs 71 to 76. Southwest winds 10 to
15 mph. Gusts to 25 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy with a slight chance of rain
showers and thunderstorms in the evening, then mostly clear after
midnight. Chance of rain 20 percent. Lows 35 to 41. Breezy. West
winds 10 to 20 mph. Gusts to 30 mph in the evening.
.MONDAY...Patchy fog in the morning. Sunny. Highs 68 to 73. West
winds 10 to 15 mph.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 30 to 36. Highs 73 to 78.
.TUESDAY NIGHT...Clear. Not as cool with lows 39 to 45.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 73 to 81. Lows
39 to 47.
&&
TEMPERATURE
Fairfield 79 44 74
$$
=
IDZ033-201700-
Upper Weiser River-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 81 to 88. Southwest winds up to 10 mph.
.TONIGHT...Partly cloudy. Lows 55 to 61. Light winds.
.SUNDAY...Increasing clouds. A chance of showers. A slight chance
of thunderstorms in the afternoon. Chance of rain 30 percent. Not
as warm with highs 72 to 78. Southwest winds up to 10 mph.
.SUNDAY NIGHT...Partly cloudy with a slight chance of showers in
the evening, then mostly clear after midnight. Chance of rain
20 percent. Cooler with lows 45 to 50. Northwest winds up to
10 mph.
.MONDAY...Patchy fog in the morning. Sunny. Highs 70 to 77. North
winds up to 10 mph.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 45 to 50. Highs 75 to 82.
.TUESDAY NIGHT...Clear. Lows 50 to 55.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 76 to 86. Lows
50 to 58.
&&
TEMPERATURE
Council 88 58 77
Cambridge 88 55 77
$$
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ORZ064-201700-
Oregon Lower Treasure Valley-
307 AM MDT Sat Sep 20 2025 /207 AM PDT Sat Sep 20 2025/
.TODAY...Sunny. Highs 85 to 90. Light winds.
.TONIGHT...Partly cloudy. Lows 57 to 62. Light winds.
.SUNDAY...Partly sunny. Highs 78 to 83. West winds up to 10 mph.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Cooler with lows 46 to 51. Northwest winds 10 to 15 mph.
.MONDAY...Sunny. Highs 74 to 79. Northwest winds 10 to 15 mph in
the morning, becoming light in the afternoon.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Clear. Lows 44 to 54. Highs
78 to 83.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 79 to 86. Lows
49 to 57.
&&
TEMPERATURE
Ontario 87 57 80
$$
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IDZ012-201700-
Lower Treasure Valley-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 84 to 89. Light winds this morning,
becoming northwest up to 10 mph this afternoon.
.TONIGHT...Partly cloudy. Lows 56 to 61. Southeast winds up to
10 mph.
.SUNDAY...Partly cloudy with a slight chance of showers. A slight
chance of thunderstorms in the afternoon. Chance of rain
20 percent. Highs 77 to 82. West winds 10 to 15 mph. Gusts to
25 mph in the afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Cooler with lows 46 to 51. Northwest winds 10 to 15 mph.
.MONDAY...Patchy fog in the morning. Sunny. Highs 72 to 77.
Northwest winds up to 10 mph.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Clear. Lows 45 to 53. Highs
78 to 83.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 78 to 86. Lows
49 to 56.
&&
TEMPERATURE
Caldwell 87 58 81
$$
=
IDZ014-201700-
Upper Treasure Valley-
307 AM MDT Sat Sep 20 2025
.TODAY...Sunny. Highs 85 to 90. East winds up to 10 mph this
morning, shifting to west this afternoon.
.TONIGHT...Mostly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 54 to 62. Southwest
winds up to 10 mph in the evening, shifting to southeast after
midnight.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A slight
chance of showers and thunderstorms in the afternoon. Chance of
rain 20 percent. Highs 79 to 84. Southeast winds up to 10 mph in
the morning, shifting to northwest with gusts to 25 mph in the
afternoon.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
46 to 51. Breezy. Northwest winds 10 to 20 mph with gusts to
30 mph.
.MONDAY...Patchy fog in the morning. Sunny. Highs 72 to 77.
Northwest winds 10 to 15 mph with gusts to 25 mph.
.MONDAY NIGHT THROUGH TUESDAY NIGHT...Clear. Lows 44 to 54. Highs
80 to 85.
.WEDNESDAY...Sunny. Highs 83 to 88.
.WEDNESDAY NIGHT...Increasing clouds. Lows 49 to 56.
.THURSDAY THROUGH FRIDAY...Mostly clear. Highs 79 to 86. Lows
48 to 55.
&&
TEMPERATURE
Boise 87 62 79
Mountain Home 88 57 83
$$
=
IDZ016-201700-
Western Magic Valley-
307 AM MDT Sat Sep 20 2025
.TODAY...Partly cloudy. Isolated showers and thunderstorms this
afternoon. Chance of rain 20 percent. Highs 79 to 84. Southeast
winds up to 10 mph.
.TONIGHT...Mostly cloudy with a slight chance of showers and
thunderstorms. Patchy fog after midnight. Chance of rain
20 percent. Lows 54 to 59. Southeast winds 10 to 15 mph.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A chance of
showers with a slight chance of thunderstorms in the afternoon.
Chance of rain 30 percent. Highs 77 to 82. Southeast winds around
10 mph in the morning, shifting to west with gusts to 25 mph in
the afternoon.
.SUNDAY NIGHT...Partly cloudy. A slight chance of showers and
thunderstorms in the evening. Chance of rain 20 percent. Lows
47 to 52. Breezy. West winds 10 to 20 mph. Gusts to 30 mph in the
evening.
.MONDAY...Sunny. Highs 68 to 73. West winds 10 to 15 mph with
gusts to 30 mph.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 41 to 46. Highs 75 to 80.
.TUESDAY NIGHT...Clear. Lows 46 to 51.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 75 to 85. Lows
49 to 54.
&&
TEMPERATURE
Jerome 79 57 77
Twin Falls 79 56 77
$$
=
IDZ029-201700-
Owyhee Mountains-
307 AM MDT Sat Sep 20 2025
.TODAY...Partly cloudy. Scattered showers and isolated
thunderstorms this afternoon. Chance of rain 30 percent. Highs
78 to 83.
.TONIGHT...Mostly cloudy. A chance of showers with a slight
chance of thunderstorms in the evening. Chance of rain
50 percent. Lows 52 to 62.
.SUNDAY...Mostly sunny. Patchy fog in the morning. A slight
chance of showers and thunderstorms in the afternoon. Chance of
rain 20 percent. Highs 72 to 77.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing.
Patchy fog after midnight. Colder with lows 40 to 49.
.MONDAY...Patchy fog in the morning. Sunny. Highs 65 to 71.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 40 to 50. Highs 72 to 80.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 47 to 54. Highs
75 to 82.
.WEDNESDAY NIGHT...Partly cloudy. A slight chance of rain showers
in the evening. Chance of rain 20 percent. Lows 48 to 57.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 73 to 79.
Lows 45 to 55.
.FRIDAY...Sunny. Highs 71 to 78.
$$
=
IDZ015-201700-
Southwest Highlands-
307 AM MDT Sat Sep 20 2025
.TODAY...Partly cloudy. Scattered showers and isolated
thunderstorms this afternoon. Chance of rain 40 percent. Highs
76 to 85.
.TONIGHT...Showers likely with a slight chance of thunderstorms
in the evening, then partly cloudy after midnight. Chance of rain
60 percent. Lows 50 to 57.
.SUNDAY...Partly cloudy. A chance of showers with a slight chance
of thunderstorms in the afternoon. Chance of rain 30 percent.
Highs 74 to 80.
.SUNDAY NIGHT...Mostly cloudy with a chance of rain showers with
a slight chance of thunderstorms in the evening, then partly
cloudy after midnight. Chance of rain 30 percent. Lows 42 to 47.
Breezy.
.MONDAY...Sunny. Highs 68 to 73.
.MONDAY NIGHT...Mostly clear. Lows 38 to 44.
.TUESDAY...Sunny. Highs 75 to 81.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 45 to 50. Highs
78 to 84.
.WEDNESDAY NIGHT...Partly cloudy. A slight chance of showers in
the evening. Chance of rain 20 percent. Lows 47 to 53.
.THURSDAY AND THURSDAY NIGHT...Partly cloudy. Highs 75 to 80.
Lows 45 to 50.
.FRIDAY...Sunny. Highs 74 to 79.
$$
=
IDZ030-201700-
Southern Twin Falls County-
307 AM MDT Sat Sep 20 2025
.TODAY...Partly cloudy. Scattered rain showers and isolated
thunderstorms this afternoon. Chance of rain 50 percent. Highs
76 to 81.
.TONIGHT...Mostly cloudy with a chance of showers with a slight
chance of thunderstorms in the evening, then partly cloudy with a
slight chance of showers after midnight. Patchy fog after
midnight. Chance of rain 40 percent. Lows 52 to 57.
.SUNDAY...Patchy fog in the morning. Rain showers likely with a
slight chance of thunderstorms in the afternoon. Chance of rain
60 percent. Highs 75 to 80.
.SUNDAY NIGHT...Rain showers likely with a slight chance of
thunderstorms in the evening, then partly cloudy after midnight.
Chance of rain 60 percent. Lows 45 to 50.
.MONDAY...Sunny. Highs 66 to 71.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 40 to 45. Highs 74 to 79.
.TUESDAY NIGHT...Clear. Lows 45 to 50.
.WEDNESDAY...Sunny. Highs 78 to 83.
.WEDNESDAY NIGHT AND THURSDAY...Partly cloudy. A 20 percent
chance of showers. Lows 48 to 53. Highs 75 to 80.
.THURSDAY NIGHT AND FRIDAY...Partly cloudy. Lows 48 to 53. Highs
73 to 78.
$$
=
ORZ062-201700-
Baker County-
207 AM PDT Sat Sep 20 2025
.TODAY...Sunny. Highs 82 to 89. West winds up to 10 mph.
.TONIGHT...Partly cloudy with a 20 percent chance of rain
showers. Lows 48 to 59. West winds up to 10 mph.
.SUNDAY...Increasing clouds. Patchy fog in the morning. A
30 percent chance of rain showers. Not as warm with highs 69 to
77. West winds up to 10 mph with gusts to 20 mph.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Patchy fog in the evening. Areas of fog after
midnight. Much colder with lows 34 to 45. Northwest winds 10 to
15 mph with gusts to 25 mph.
.MONDAY...Areas of fog in the morning. Sunny. Highs 69 to 76.
Northwest winds up to 10 mph.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 33 to 47. Highs 75 to 82.
.TUESDAY NIGHT...Clear. Lows 41 to 54.
.WEDNESDAY THROUGH FRIDAY...Mostly clear. Highs 75 to 85. Lows
40 to 54.
&&
TEMPERATURE
Baker City 85 48 72
$$
=
ORZ061-201700-
Harney County-
207 AM PDT Sat Sep 20 2025
.TODAY...Mostly sunny. Highs 75 to 84. Light winds.
.TONIGHT...Partly cloudy. A slight chance of showers in the
evening. Chance of rain 20 percent. Lows 45 to 54. West winds
around 10 mph.
.SUNDAY...Partly sunny. Highs 69 to 77. West winds 10 to 15 mph
with gusts to 25 mph.
.SUNDAY NIGHT...Mostly clear. Areas of fog after midnight. Colder
with lows 31 to 42. Breezy. Northwest winds 10 to 20 mph in the
evening, decreasing to around 10 mph after midnight.
.MONDAY...Areas of fog in the morning. Sunny. Highs 65 to 75.
Northwest winds up to 10 mph in the morning, becoming light in
the afternoon.
.MONDAY NIGHT...Clear. Lows 31 to 42.
.TUESDAY THROUGH WEDNESDAY...Mostly clear. Highs 74 to 84. Lows
39 to 50.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Partly cloudy. Lows
38 to 51. Highs 71 to 81.
.FRIDAY...Sunny. Highs 71 to 81.
&&
TEMPERATURE
Burns 84 45 75
$$
=
ORZ063-201700-
Malheur County-
307 AM MDT Sat Sep 20 2025 /207 AM PDT Sat Sep 20 2025/
.TODAY...Partly cloudy. Isolated showers this afternoon. Chance
of rain 20 percent. Highs 82 to 88. South winds up to 10 mph.
.TONIGHT...Mostly cloudy with a chance of showers in the evening,
then partly cloudy after midnight. Chance of rain 30 percent.
Lows 51 to 60. South winds around 10 mph.
.SUNDAY...Partly cloudy. A slight chance of showers and
thunderstorms in the afternoon. Chance of rain 20 percent. Highs
74 to 80. West winds 10 to 15 mph. Gusts to 25 mph in the
afternoon.
.SUNDAY NIGHT...Partly cloudy with a slight chance of rain
showers in the evening, then mostly clear after midnight. Patchy
fog after midnight. Chance of rain 20 percent. Cooler with lows
38 to 48. Northwest winds 10 to 15 mph with gusts to 25 mph.
.MONDAY...Areas of fog in the morning. Sunny. Highs 70 to 76.
North winds up to 10 mph.
.MONDAY NIGHT AND TUESDAY...Clear. Lows 36 to 46. Highs 76 to 83.
.TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Lows 43 to 52. Highs
79 to 84.
.WEDNESDAY NIGHT THROUGH THURSDAY NIGHT...Partly cloudy. Lows
45 to 55. Highs 77 to 83.
.FRIDAY...Sunny. Highs 76 to 82.
$$
=