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Grimes Pass, Idaho Weather Forecast
Grimes Pass, Idaho Weather
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Weather Forecast for Grimes Pass, Idaho : Boise County
Issued: 3:04 am MDT Oct 31, 2025 Latitude: 44.044617 Longitude: -115.8573372 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Saturday Sunday Monday Tuesday Wednesday Thursday
Mostly Sunny on Today Partly Cloudy on Tonight Mostly Sunny on Saturday 20% chance of  on Sunday Mostly Sunny on Monday 30% chance of rain on Tuesday 40% chance of rain on Wednesday 50% chance of rain on Thursday
High: 58°F Low: 32°F High: 66°F High: 58°F High: 63°F High: 56°F High: 60°F High: 51°F
Low: 40°F Low: 30°F Low: 39°F Low: 38°F Low: 35°F  
Mostly Sunny Partly Cloudy Mostly Sunny Morning Fog Mostly Sunny Rain Rain Rain
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Current Conditions at
BOISE - (KBOI)
36°
Clear
as of 8:53 AM MDST
Rel. Humidity: 74%
Dew Point: 28°F
Visibility: 10 Miles
Pressure: 30.22 in.
Flight Rule: VFR
Wind Data
3 MPH
130° Southeast
Cloud Level(s): Clear
Current Conditions at
STANLEY RANGER STN - (KSNT)
18°
Clear
as of 8:51 AM MDST
Rel. Humidity: 92%
Dew Point: 16°F
Pressure: 30.29 in.
Wind Data
Calm
Current Conditions at
CALDWELL - (KEUL)
32°
Clear
as of 8:56 AM MDST
Rel. Humidity: 92%
Dew Point: 30°F
Visibility: 9 Miles
Pressure: 30.24 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
ONTARIO - (KONO)
27°
Clear
as of 8:53 AM MDST
Rel. Humidity: 92%
Dew Point: 25°F
Visibility: 10 Miles
Pressure: 30.26 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Mostly Sunny on Today Today... Mostly sunny, with a high near 58. Calm wind.

Partly Cloudy on Tonight Tonight... Cloudy, then gradually becoming partly cloudy, with a low around 32. Calm wind.

Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 66. Calm wind.

30% chance of rain Saturday Night Saturday Night... A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 40. Light south southeast wind.

20% chance of  Sunday Sunday... A 20 percent chance of showers before noon. Patchy fog between 9am and noon. Otherwise, partly sunny, with a high near 58. Calm wind.

Morning Fog on Sunday Night Sunday Night... Patchy fog after 3am. Otherwise, partly cloudy, with a low around 30.

Mostly Sunny on Monday Monday... Mostly sunny, with a high near 63.

40% chance of rain Monday Night Monday Night... A 40 percent chance of showers. Mostly cloudy, with a low around 39.

30% chance of rain Tuesday Tuesday... A 30 percent chance of showers before noon. Patchy fog between 9am and noon. Otherwise, mostly cloudy, with a high near 56.

20% chance of rain Tuesday Night Tuesday Night... A 20 percent chance of showers. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 38.

40% chance of rain Wednesday Wednesday... A 40 percent chance of showers. Areas of fog. Otherwise, mostly cloudy, with a high near 60.

70% chance of rain Wednesday Night Wednesday Night... Showers likely. Patchy fog. Otherwise, mostly cloudy, with a low around 35. Chance of precipitation is 70%.

50% chance of rain Thursday Thursday... A 50 percent chance of showers. Patchy fog. Otherwise, mostly cloudy, with a high near 51.

Current Radar Image


Sun Almanac for Grimes Pass, Idaho
Sunrise: 08:20 AM
Sunset: 6:35 PM
Civil Sunrise:07:49 AM
Civil Sunset: 7:05 PM
Nautical Sunrise: 07:15 AM
Nautical Sunset: 7:39 PM
Astro Sunrise: 06:42 AM
Astro Sunset: 8:12 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.