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

Thunderstorms and Heavy Rainfall in the Mid-Atlantic and Southern New England; Fire Weather Concerns in the West

Heavy rain and isolated severe thunderstorms may continue to bring flash and urban flooding to the northern Mid-Atlantic and southern New England through tonight. Isolated dry thunderstorms will continue to bring a fire weather threat to the northwestern Great Basin through Friday. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

67°F

19°C

Humidity 72%
Wind Speed WSW 12 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 01 Aug 02:53 AM MDT
Extended Forecast for

Ontario Municipal OR

  • Overnight

    Overnight: A 30 percent chance of showers. Mostly cloudy, with a low around 65. Light west southwest wind.

    Low: 65 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny and hot, with a high near 91. Calm wind becoming west southwest around 6 mph in the afternoon.

    High: 91 °F

    Areas Smoke
    then Chance
    Showers

  • Friday Night

    Friday Night: Areas of smoke. Mostly clear, with a low around 65. North northwest wind 5 to 7 mph.

    Low: 65 °F

    Areas Smoke

  • Saturday

    Saturday: Areas of smoke. Sunny and hot, with a high near 94. North northwest wind around 6 mph.

    High: 94 °F

    Areas Smoke

  • Saturday Night

    Saturday Night: Areas of smoke. Mostly clear, with a low around 65. Northwest wind 5 to 7 mph.

    Low: 65 °F

    Areas Smoke

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon. Areas of smoke. Sunny and hot, with a high near 93.

    High: 93 °F

    Areas Smoke
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 83. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
A 30 percent chance of showers. Mostly cloudy, with a low around 65. Light west southwest wind.
Friday
A 30 percent chance of showers and thunderstorms after noon. Areas of smoke. Mostly sunny and hot, with a high near 91. Calm wind becoming west southwest around 6 mph in the afternoon.
Friday Night
Areas of smoke. Mostly clear, with a low around 65. North northwest wind 5 to 7 mph.
Saturday
Areas of smoke. Sunny and hot, with a high near 94. North northwest wind around 6 mph.
Saturday Night
Areas of smoke. Mostly clear, with a low around 65. Northwest wind 5 to 7 mph.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Areas of smoke. Sunny and hot, with a high near 93.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Monday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Sunny and hot, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 64.
Thursday
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:
3:06 am MDT Aug 1, 2025
Forecast Valid:
3am MDT Aug 1, 2025-6pm MDT Aug 7, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation