Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424°NLon: 117.00808°WElev: 2185.0ft.

Clear

95°F

35°C

Humidity 19%
Wind Speed NNE 5 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 26 Aug 04:15 PM MDT
Extended Forecast for

Weiser ID

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm  in the evening.

    Low: 65 °F

    Mostly Cloudy

  • Thursday

    Thursday: Patchy smoke before noon. Mostly cloudy, then gradually becoming sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 96 °F

    Patchy Smoke
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 62. West southwest wind 5 to 7 mph becoming calm. Winds could gust as high as 21 mph.

    Low: 62 °F

    Increasing
    Clouds

  • Friday

    Friday: Partly sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 88 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 59. South southeast wind 5 to 8 mph becoming calm  after midnight.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon.  Sunny, with a high near 87.

    High: 87 °F

    Slight Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight.  Mostly clear, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers then
    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 65. South wind around 5 mph becoming calm in the evening.
Thursday
Patchy smoke before noon. Mostly cloudy, then gradually becoming sunny and hot, with a high near 96. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
Increasing clouds, with a low around 62. West southwest wind 5 to 7 mph becoming calm. Winds could gust as high as 21 mph.
Friday
Partly sunny, with a high near 88. Calm wind becoming south 5 to 7 mph in the afternoon.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 59. South southeast wind 5 to 8 mph becoming calm after midnight.
Saturday
A 20 percent chance of showers before noon. Sunny, with a high near 87.
Saturday Night
A 20 percent chance of showers before midnight. Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Mostly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Weiser ID
 44.25°N 116.96°W (Elev. 2188 ft)
11:13 am MDT Aug 26, 2026
4pm MDT Aug 26, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database