Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

82°F

28°C

Humidity 23%
Wind Speed ESE 3 MPH
Barometer 30.22 in (1023.37 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 09 Sep 05:05 PM MDT
Extended Forecast for

6 Miles WNW Weiser ID

  • Tonight

    Tonight: Clear, with a low around 48. East southeast wind around 5 mph becoming calm  after midnight.

    Low: 48 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Calm wind becoming east southeast around 5 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. Calm wind becoming northwest 5 to 8 mph in the evening.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Northwest wind 5 to 9 mph becoming calm  in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48. Calm wind becoming northwest 5 to 8 mph after midnight.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after noon.  Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm.  Mostly cloudy, with a low around 48. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers.  Partly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 48. East southeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 87. Calm wind becoming east southeast around 5 mph.
Thursday Night
Mostly clear, with a low around 52. Calm wind becoming northwest 5 to 8 mph in the evening.
Friday
Sunny, with a high near 79. Northwest wind 5 to 9 mph becoming calm in the afternoon.
Friday Night
Mostly clear, with a low around 48. Calm wind becoming northwest 5 to 8 mph after midnight.
Saturday
A 30 percent chance of showers after noon. Mostly sunny, with a high near 76.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 48. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 43.
Monday
Sunny, with a high near 66.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles WNW Weiser ID
 44.28°N 117.09°W (Elev. 2156 ft)
12:29 pm MDT Sep 9, 2026
5pm MDT Sep 9, 2026-6pm MDT Sep 16, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database