Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

Lat: 44.01424° N Lon: 117.00808° W Elev: 2185.0 ft.

Clear

46°F

8°C

Humidity 87%
Wind Speed WSW 5 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 05 Sep 04:00 AM MDT
Detailed forecast for

Oregon Lower Treasure Valley

Today
Areas of fog this morning. Sunny. Highs 70 to 75. Light winds.
Tonight
Partly cloudy. Areas of fog. Lows 46 to 51. North winds up to 10 mph.
Sunday
Areas of fog in the morning. Partly sunny. Highs 71 to 76. West winds up to 10 mph.
Sunday Night
A chance of showers with a slight chance of thunderstorms in the evening, then showers after midnight. Patchy fog after midnight. Chance of rain 80 percent. Lows 47 to 52. West winds 10 to 15 mph. Gusts to 30 mph in the evening, decreasing to 20 mph after midnight.
Labor Day
Areas of fog in the morning. Showers likely, mainly in the morning. Chance of rain 60 percent. Highs 66 to 71. West winds up to 10 mph with gusts to 20 mph.
Monday Night And Tuesday
Mostly clear. Areas of fog. Lows 40 to 47. Highs 71 to 76.
Tuesday Night And Wednesday
Partly cloudy. Areas of fog. Lows 44 to 51. Highs 77 to 82.
Wednesday Night
Partly cloudy. Lows 48 to 54.
Thursday
Patchy fog in the morning. Mostly sunny. Highs 80 to 85.
Thursday Night And Friday
Partly cloudy. A 20 percent chance of showers. Lows 51 to 57. Highs 79 to 84.



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230 AM MDT Sat Sep 5 2026
 
 

Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database