Flooding Possible in the Southwest U.S.; Coastal Storm to Impact the East

Heavy to excessive rainfall is expected today into Wednesday over New Mexico into far west Texas. Flash flooding and debris flows in wildfire burn areas will be possible. A strong coastal storm will develop off the Mid-Atlantic coast Wednesday, intensifying toward southern New England this weekend. Significant coastal flooding, strong rip currents, and beach erosion from high surf expected. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

70°F

21°C

Humidity 40%
Wind Speed W 3 MPH
Barometer 29.88 in (1011.85 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 22 Sep 08:20 PM MDT
Detailed forecast for

Oregon Lower Treasure Valley

Tonight
Partly cloudy this evening, then clearing. Lows 51 to 56. Northwest winds up to 10 mph.
Wednesday
Sunny. Highs 80 to 85. North winds up to 10 mph in the morning, becoming light in the afternoon.
Wednesday Night
Decreasing clouds. Lows 52 to 57. Light winds.
Thursday
Sunny. Highs 87 to 92. Light winds in the morning, becoming southeast up to 10 mph with gusts to 20 mph in the afternoon.
Thursday Night
Increasing clouds. Lows 58 to 63. South winds up to 10 mph.
Friday And Friday Night
Partly cloudy. Not as warm. Highs 78 to 83. Lows 43 to 48. Breezy.
Saturday Through Sunday Night
Mostly cloudy. Highs 66 to 74. Lows 43 to 48.
Monday
Mostly sunny. Highs 70 to 75.
Monday Night
Decreasing clouds. Lows 41 to 47.
Tuesday
Mostly sunny. Highs 70 to 75.



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230 PM MDT Tue Sep 22 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database