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

Areas of Severe Thunderstorms and Excessive Rainfall; Heat Wave Builds in the Intermountain West and Plains

A slow moving front will bring rounds of strong to severe thunderstorms and heavy rainfall to the central Plains eastward to the east-central U.S.. The first widespread significant heat wave of summer for the Intermountain West and Plains is expected to develop today and expand through next week. Dangerous heat will continue to impact portions of the Southwest and Southeast. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

81°F

27°C

Humidity 30%
Wind Speed SSE 3 MPH
Barometer 29.87 in (1011.51 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 10 Jul 11:05 AM MDT
Extended Forecast for

3 Miles NNW Payette ID

Heat Advisory July 10, 12:00pm until July 11, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Sunny and hot, with a high near 101. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Mostly clear, with a low around 66. South wind 6 to 14 mph becoming northwest in the evening. Winds could gust as high as 25 mph.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 100. Calm wind becoming south southeast 5 to 7 mph in the afternoon.

    High: 100 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67. South southeast wind 9 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny and hot, with a high near 99. Northwest wind 6 to 10 mph.

    High: 99 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny and hot, with a high near 98.

    High: 98 °F

    Hot

Detailed Forecast

Today
Sunny and hot, with a high near 101. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Mostly clear, with a low around 66. South wind 6 to 14 mph becoming northwest in the evening. Winds could gust as high as 25 mph.
Saturday
Sunny and hot, with a high near 100. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 67. South southeast wind 9 to 15 mph becoming north northwest after midnight. Winds could gust as high as 25 mph.
Sunday
Partly sunny and hot, with a high near 99. Northwest wind 6 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 68.
Monday
Mostly sunny and hot, with a high near 98.
Monday Night
Mostly cloudy, with a low around 69.
Tuesday
Mostly sunny and hot, with a high near 98.
Tuesday Night
Partly cloudy, with a low around 68.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 67.
Thursday
Sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Payette ID
 44.12°N 116.93°W (Elev. 2192 ft)
Last Update:
12:29 am MDT Jul 10, 2026
Forecast Valid:
11am MDT Jul 10, 2026-6pm MDT Jul 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation