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

Extreme Heat and Excessive Rainfall This Week

A significant heat wave is underway for the Intermountain West, Northern Plains, and Upper Great Lakes, peaking in intensity through midweek and lingering across parts of the Northern Plains and Midwest until this weekend. In southwest Texas, excessive rainfall may bring a risk for potentially life-threatening flash and arroyo flooding through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

91°F

33°C

Humidity 26%
Wind Speed E 4 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 13 Jul 07:30 PM MDT
Extended Forecast for

Payette ID

Heat Advisory until July 13, 09:00pm
Click here for hazard details and duration
...
  •  
    Heat Advisory until July 13, 09:00pm

    NOW until 9:00pm Mon

    Heat Advisory

  • Tonight

    Low: 69 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers before noon, then a slight chance of showers and thunderstorms between noon and 3pm. Mostly cloudy and hot, with a high near 91. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 64. Light and variable wind.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Calm wind becoming west northwest around 5 mph in the afternoon.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64. North wind 3 to 6 mph.

    Low: 64 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 100.

    High: 100 °F

    Hot

Detailed Forecast

Tonight
Increasing clouds, with a low around 69. Light and variable wind.
Tuesday
A slight chance of showers before noon, then a slight chance of showers and thunderstorms between noon and 3pm. Mostly cloudy and hot, with a high near 91. Calm wind becoming northwest 5 to 7 mph in the morning. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 64. Light and variable wind.
Wednesday
Sunny and hot, with a high near 97. Calm wind becoming west northwest around 5 mph in the afternoon.
Wednesday Night
Clear, with a low around 64. North wind 3 to 6 mph.
Thursday
Sunny and hot, with a high near 100.
Thursday Night
Mostly clear, with a low around 65.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 66.
Saturday
Sunny and hot, with a high near 101.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Sunny and hot, with a high near 100.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Mostly sunny and hot, with a high near 99.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Payette ID
 44.08°N 116.92°W (Elev. 2165 ft)
Last Update:
12:29 pm MDT Jul 13, 2026
Forecast Valid:
7pm MDT Jul 13, 2026-6pm MDT Jul 20, 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