Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Grangeville - Idaho County Airport (KGIC)

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

Clear

73°F

23°C

Humidity 38%
Wind Speed N 5 MPH
Barometer 30.29 in (1025.74 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 09 Sep 01:55 PM PDT
Extended Forecast for

Grangeville ID

  • Tonight

    Tonight: Mostly clear, with a low around 49. Calm wind becoming south southwest 5 to 9 mph in the evening.

    Low: 49 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. South southwest wind 5 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of rain, mainly between 10pm and 2am.  Cloudy, then becoming partly cloudy toward daybreak, with a low around 47. West northwest wind 5 to 7 mph becoming southwest in the evening. Winds could gust as high as 18 mph.

    Low: 47 °F

    Slight Chance
    Rain then
    Chance Rain

  • Friday

    Friday: Sunny, with a high near 69. Southwest wind around 5 mph becoming calm.

    High: 69 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. North northeast wind around 6 mph becoming calm  in the evening.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after noon.  Partly sunny, with a high near 68.

    High: 68 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before midnight, then rain after midnight.  Low around 44. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Low: 44 °F

    Showers

  • Sunday

    Sunday: Rain.  Mostly cloudy, with a high near 55.

    High: 55 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain, mainly before midnight.  Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance Rain

Detailed Forecast

Tonight
Mostly clear, with a low around 49. Calm wind becoming south southwest 5 to 9 mph in the evening.
Thursday
Sunny, with a high near 81. South southwest wind 5 to 14 mph becoming west in the afternoon. Winds could gust as high as 22 mph.
Thursday Night
A 50 percent chance of rain, mainly between 10pm and 2am. Cloudy, then becoming partly cloudy toward daybreak, with a low around 47. West northwest wind 5 to 7 mph becoming southwest in the evening. Winds could gust as high as 18 mph.
Friday
Sunny, with a high near 69. Southwest wind around 5 mph becoming calm.
Friday Night
Mostly cloudy, with a low around 45. North northeast wind around 6 mph becoming calm in the evening.
Saturday
A 30 percent chance of rain after noon. Partly sunny, with a high near 68.
Saturday Night
Showers and possibly a thunderstorm before midnight, then rain after midnight. Low around 44. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Sunday
Rain. Mostly cloudy, with a high near 55.
Sunday Night
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 39.
Monday
Sunny, with a high near 62.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
A slight chance of rain. Mostly sunny, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Grangeville ID
 45.95°N 116.12°W (Elev. 3301 ft)
2:01 pm MDT Sep 9, 2026
3pm MDT Sep 9, 2026-6pm MDT Sep 16, 2026
 
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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