Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

86°F

30°C

Humidity 23%
Wind Speed N 0 MPH
Barometer 29.98 in (1015.24 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 12:20 PM MDT
Extended Forecast for

Nyssa ORSimilar City Names

  • This Afternoon

    This Afternoon: Mostly sunny and hot, with a high near 94. Calm wind becoming west 5 to 8 mph.

    High: 94 °F

    Hot

  • Tonight

    Tonight: Patchy smoke after midnight. Increasing clouds, with a low around 63. West northwest wind 5 to 10 mph becoming northeast in the evening. Winds could gust as high as 22 mph.

    Low: 63 °F

    Partly Cloudy
    then Patchy
    Smoke

  • Friday

    Friday: Patchy smoke before 9am. Mostly cloudy, with a high near 87. Light and variable wind becoming south southeast 9 to 14 mph in the afternoon.

    High: 87 °F

    Patchy Smoke
    then Partly
    Sunny

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 3am.  Cloudy, with a low around 61. Southeast wind 5 to 11 mph, with gusts as high as 20 mph.  Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 86. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers before midnight.  Partly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny and hot, with a high near 94. Calm wind becoming west 5 to 8 mph.
Tonight
Patchy smoke after midnight. Increasing clouds, with a low around 63. West northwest wind 5 to 10 mph becoming northeast in the evening. Winds could gust as high as 22 mph.
Friday
Patchy smoke before 9am. Mostly cloudy, with a high near 87. Light and variable wind becoming south southeast 9 to 14 mph in the afternoon.
Friday Night
A slight chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 3am. Cloudy, with a low around 61. Southeast wind 5 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 86. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Saturday Night
A 20 percent chance of showers before midnight. Partly cloudy, with a low around 53.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 51.
Monday
Sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
Nyssa ORSimilar City Names
 43.88°N 117°W (Elev. 2110 ft)
12:29 pm MDT Aug 27, 2026
12pm MDT Aug 27, 2026-6pm MDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database