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 >

Current conditions at

Joslin Field - Magic Valley Regional Airport (KTWF)

Lat: 42.4785°NLon: 114.47739°WElev: 4163.0ft.

Clear

66°F

19°C

Humidity 48%
Wind Speed WNW 6 MPH
Barometer 30.15 in (1021.0 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 19 Sep 04:20 PM MDT
Extended Forecast for

Twin Falls ID

  • Tonight

    Tonight: Mostly clear, with a low around 46. Northwest wind around 5 mph becoming calm after midnight.

    Low: 46 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 75. Light and variable wind becoming southeast around 5 mph.

    High: 75 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 49. Light and variable wind becoming east southeast around 6 mph in the evening.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 80. East northeast wind 6 to 9 mph.

    High: 80 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 52. Northeast wind 5 to 7 mph becoming southeast after midnight.

    Low: 52 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Wednesday Night

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

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 46. Northwest wind around 5 mph becoming calm after midnight.
Sunday
Sunny, with a high near 75. Light and variable wind becoming southeast around 5 mph.
Sunday Night
Mostly clear, with a low around 49. Light and variable wind becoming east southeast around 6 mph in the evening.
Monday
Sunny, with a high near 80. East northeast wind 6 to 9 mph.
Monday Night
Partly cloudy, with a low around 52. Northeast wind 5 to 7 mph becoming southeast after midnight.
Tuesday
Mostly sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Sunny, with a high near 85.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 83.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Twin Falls ID
 42.56°N 114.47°W (Elev. 3698 ft)
Last Update:
12:29 pm MDT Sep 19, 2026
Forecast Valid:
4pm MDT Sep 19, 2026-6pm MDT Sep 26, 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