Severe Thunderstorms and Heavy Rainfall for the Southwest; Heat Spreads Across the Center of the Nation

Moisture will continue to move into areas of the West. This will increase showers and thunderstorms coverage and intensity, with the risk of flash flooding and damaging wind gusts. Meanwhile, heat across the Southwest will expand into the center of the nation this weekend into early next week. Trends favor this heat will spread across the Ohio Valley, mid-Atlantic next week. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

86°F

30°C

Humidity 11%
Wind Speed WSW 13 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 29 Aug 06:20 PM MDT
Extended Forecast for

Ontario ORSimilar City Names

  • Tonight

    Tonight: Mostly clear, with a low around 52. Northwest wind 7 to 17 mph, with gusts as high as 29 mph.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78. West wind around 5 mph becoming calm  in the morning.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50. Calm wind.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 88. Calm wind.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight.  Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 52. Northwest wind 7 to 17 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 78. West wind around 5 mph becoming calm in the morning.
Sunday Night
Mostly clear, with a low around 50. Calm wind.
Monday
Sunny, with a high near 88. Calm wind.
Monday Night
Mostly clear, with a low around 58. Calm wind.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 58.
Wednesday
Partly sunny, with a high near 81.
Wednesday Night
A 20 percent chance of showers after midnight. Mostly cloudy, with a low around 56.
Thursday
A 30 percent chance of showers, mainly before noon. Partly sunny, with a high near 77.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 78.
Friday Night
A 20 percent chance of showers. Partly cloudy, with a low around 52.
Saturday
A 20 percent chance of showers. Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Ontario ORSimilar City Names
 44.03°N 116.97°W (Elev. 2103 ft)
12:29 pm MDT Aug 29, 2026
6pm MDT Aug 29, 2026-6pm MDT Sep 5, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database