Heavy to Excessive Rainfall and Flooding Threats in the Central and Eastern U.S.; Heat and Fire Weather Concerns in the West

Thunderstorms producing excessive rainfall and potential flooding concerns will continue through tonight from the Southern Plains to the East Coast. Areas of greatest concern for flooding are over central Texas and the Mid-Atlantic. Heat will continue to build across the West through Tuesday. Heat Advisories and Extreme Heat Warnings are in effect. Fire Weather concerns continue through Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

82°F

28°C

Humidity 42%
Wind Speed W 4 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 13 Jul 10:05 PM MDT
Extended Forecast for

Ontario ORSimilar City Names

Heat Advisory July 13, 10:27pm until July 14, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 13, 10:27pm until July 14, 09:00pm

    NOW until 9:00pm Mon

    Heat Advisory

  • Tonight

    Low: 71 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 104. West northwest wind 5 to 8 mph.

    High: 104 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 70. North northwest wind around 9 mph.

    Low: 70 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Northwest wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 65. North northwest wind 9 to 14 mph, with gusts as high as 26 mph.

    Low: 65 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 94.

    High: 94 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

  • Thursday

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

    High: 99 °F

    Hot

Detailed Forecast

Tonight
Clear, with a low around 71. Northwest wind 5 to 8 mph.
Monday
Sunny and hot, with a high near 104. West northwest wind 5 to 8 mph.
Monday Night
Clear, with a low around 70. North northwest wind around 9 mph.
Tuesday
Sunny and hot, with a high near 93. Northwest wind 9 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Clear, with a low around 65. North northwest wind 9 to 14 mph, with gusts as high as 26 mph.
Wednesday
Sunny and hot, with a high near 94.
Wednesday Night
Clear, with a low around 64.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Mostly clear, with a low around 67.
Friday
Sunny and hot, with a high near 100.
Friday Night
Mostly clear, with a low around 68.
Saturday
Sunny and hot, with a high near 100.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny and hot, with a high near 99.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario ORSimilar City Names
 44.03°N 116.97°W (Elev. 2103 ft)
3:04 pm MDT Jul 13, 2025
10pm MDT Jul 13, 2025-6pm MDT Jul 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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