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

Risks of Severe Thunderstorms and Excessive Rainfall; Fire Weather Concerns and Record Warmth

Severe thunderstorms and flash flooding risks increase across the center of the nation today. Meanwhile, ongoing thunderstorms and flash flooding will linger along the Gulf Coast states through the evening. The Great Basin and Intermountain West, warm temperatures and dry fuels with dry lightning may enhance fire weather potential. In addition, across interior Alaska, Red Flag Warning are posted. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

73°F

23°C

Humidity 60%
Wind Speed SE 8 MPH
Barometer 29.89 in (1012.19 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 20 Jun 02:30 PM MDT
Extended Forecast for

Ontario Municipal OR

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 86. Northwest wind around 7 mph becoming east northeast.

    High: 86 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly clear, with a low around 58. Light and variable wind becoming north northwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 88. West wind around 7 mph becoming north northeast in the afternoon.

    High: 88 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 58. Northeast wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 58 °F

    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 91. Northwest wind 6 to 8 mph.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 86. Northwest wind around 7 mph becoming east northeast.
Tonight
Mostly clear, with a low around 58. Light and variable wind becoming north northwest 5 to 9 mph in the evening. Winds could gust as high as 20 mph.
Sunday
Sunny, with a high near 88. West wind around 7 mph becoming north northeast in the afternoon.
Sunday Night
Mostly clear, with a low around 58. Northeast wind 5 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Monday
Sunny and hot, with a high near 91. Northwest wind 6 to 8 mph.
Monday Night
Clear, with a low around 56.
Tuesday
Sunny and hot, with a high near 95.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny and hot, with a high near 99.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny and hot, with a high near 97.
Thursday Night
Partly cloudy, with a low around 61.
Friday
Mostly sunny and hot, with a high near 90.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
Last Update:
12:29 pm MDT Jun 20, 2026
Forecast Valid:
2pm MDT Jun 20, 2026-6pm MDT Jun 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

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Chance of Precipitation