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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Grangeville - Idaho County Airport (KGIC)

Lat: 45.94111°NLon: 116.13257°WElev: 3287.0ft.

Mostly Cloudy

61°F

16°C

Humidity 59%
Wind Speed SSE 3 MPH
Barometer 29.97 in (1014.9 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 18 Aug 03:35 AM PDT
Extended Forecast for

Grangeville ID

  • Overnight

    Overnight: A 20 percent chance of rain. Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Slight Chance
    Rain

  • Monday

    Monday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 20%.

    High: 87 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm in the evening.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 88. Calm wind becoming north around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight. Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 55.

    Low: 55 °F

    Clear

Detailed Forecast

Overnight
A 20 percent chance of rain. Mostly cloudy, with a low around 57. Calm wind.
Monday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 8 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 88. Calm wind becoming north around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of rain between 9pm and midnight. Mostly clear, with a low around 57. North wind 5 to 8 mph becoming calm after midnight. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 85.
Thursday Night
Clear, with a low around 55.
Friday
Sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny, with a high near 94.
Saturday Night
Partly cloudy, with a low around 62.
Sunday
Sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grangeville ID
 45.93°N 116.12°W (Elev. 3388 ft)
Last Update:
3:30 am MDT Aug 18, 2025
Forecast Valid:
5am MDT Aug 18, 2025-6pm MDT Aug 24, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation