Risks of Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Fire Weather Concerns in Alaska and Southwest

An expansive storm system will bring widespread storms with a threat for flash flooding and severe weather to much of the central to eastern U.S. into early this week. Critical fire weather conditions are expected across interior Alaska this weekend. Elevated fire conditions also expected in the Southwest U.S.. Conditions will remain uncomfortably hot across the southern Plains and the Southeast. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Partly Cloudy

64°F

18°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 21 Jun 12:35 AM MDT
Extended Forecast for

Ontario OR

  • Overnight

    Overnight: Clear, with a low around 58. North northwest wind 7 to 9 mph.

    Low: 58 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 89. Northwest wind 5 to 8 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 57. North northwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 91. North northwest wind 5 to 7 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 59. North northwest wind 5 to 8 mph.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 98.

    High: 98 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

Detailed Forecast

Overnight
Clear, with a low around 58. North northwest wind 7 to 9 mph.
Sunday
Sunny, with a high near 89. Northwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 57. North northwest wind 7 to 11 mph, with gusts as high as 20 mph.
Monday
Sunny and hot, with a high near 91. North northwest wind 5 to 7 mph.
Monday Night
Clear, with a low around 59. North northwest wind 5 to 8 mph.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny and hot, with a high near 98.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Partly cloudy, with a low around 62.
Friday
A 20 percent chance of showers. Partly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 56.
Saturday
Sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario OR
 44.03°N 116.97°W (Elev. 2103 ft)
12:29 am MDT Jun 21, 2026
12am MDT Jun 21, 2026-6pm MDT Jun 27, 2026
 
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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