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

63°F

17°C

Humidity 48%
Wind Speed NNW 6 MPH
Barometer 30.1 in (1019.3 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 18 Sep 06:00 AM MDT
Extended Forecast for

Boise ID

  • Today

    Today: A 30 percent chance of showers, mainly before 4pm. Partly sunny, with a high near 74. Northwest wind 3 to 7 mph.

    High: 74 °F

    Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Northwest wind around 6 mph becoming calm in the evening.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 76. Calm wind becoming west northwest 5 to 8 mph in the afternoon.

    High: 76 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 81. Calm wind becoming south around 6 mph.

    High: 81 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
A 30 percent chance of showers, mainly before 4pm. Partly sunny, with a high near 74. Northwest wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 54. Northwest wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 76. Calm wind becoming west northwest 5 to 8 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 81. Calm wind becoming south around 6 mph.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Sunny, with a high near 84.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 88.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Boise ID
 43.6°N 116.18°W (Elev. 2776 ft)
Last Update:
12:29 am MDT Sep 18, 2026
Forecast Valid:
6am MDT Sep 18, 2026-6pm MDT Sep 24, 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