National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Idaho Falls Regional Airport (KIDA)

Lat: 43.52083°NLon: 112.06611°WElev: 4741.0ft.

Clear

64°F

18°C

Humidity 67%
Wind Speed SW 17 MPH
Barometer 30.13 in (1020.32 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Sep 05:53 PM MDT
Extended Forecast for

3 Miles ESE Idaho Falls ID

Flood Watch until September 19, 12:00am
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch until September 19, 12:00am

    NOW until 12:00am Sat

    Flood Watch

  • Tonight

    Low: 46 °F

    Showers
    Likely then
    Slight Chance
    T-storms

  • Saturday

    Saturday: A 40 percent chance of showers and thunderstorms, mainly between 8am and 3pm. Partly sunny, with a high near 62. West southwest wind 3 to 7 mph.

    High: 62 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 45. Light and variable wind.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 44. Light and variable wind.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

Detailed Forecast

Tonight
Showers likely and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms, mainly between 10pm and midnight. Mostly cloudy, with a low around 46. Southwest wind 5 to 7 mph becoming south southeast in the evening. Chance of precipitation is 70%.
Saturday
A 40 percent chance of showers and thunderstorms, mainly between 8am and 3pm. Partly sunny, with a high near 62. West southwest wind 3 to 7 mph.
Saturday Night
Partly cloudy, with a low around 45. Light and variable wind.
Sunday
Mostly sunny, with a high near 69. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 44. Light and variable wind.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 48.
Tuesday
Mostly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 48.
Wednesday
Sunny, with a high near 76.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE Idaho Falls ID
 43.47°N 111.98°W (Elev. 4718 ft)
Last Update:
5:31 pm MDT Sep 18, 2026
Forecast Valid:
6pm MDT Sep 18, 2026-6pm MDT Sep 25, 2026
 
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