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

Boise Air Terminal (KBOI)

Lat: 43.56704°NLon: 116.24053°WElev: 2822.0ft.

Clear

73°F

23°C

Humidity 38%
Wind Speed S 3 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Sep 12:20 PM MDT
Extended Forecast for

Boise ID

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. Light and variable wind.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 54. Calm wind becoming east around 5 mph.

    Low: 54 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 84. Light and variable wind.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 57. Light and variable wind.

    Low: 57 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. Light and variable wind.
Tonight
Clear, with a low around 54. Calm wind becoming east around 5 mph.
Monday
Sunny, with a high near 84. Light and variable wind.
Monday Night
Mostly cloudy, with a low around 57. Light and variable wind.
Tuesday
Mostly sunny, with a high near 85. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 89.
Thursday Night
Partly cloudy, with a low around 60.
Friday
Mostly sunny, with a high near 80.
Friday Night
Partly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Boise ID
 43.62°N 116.22°W (Elev. 2710 ft)
Last Update:
12:29 pm MDT Sep 20, 2026
Forecast Valid:
12pm MDT Sep 20, 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