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

Clear

75°F

24°C

Humidity 36%
Wind Speed N 0 MPH
Barometer 29.99 in (1015.58 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 27 Aug 11:00 AM MDT
Detailed forecast for

Oregon Lower Treasure Valley

Rest Of Today
Patchy smoke this morning. Mostly sunny. Highs 93 to 98. Southwest winds 10 to 15 mph. Gusts to 25 mph this afternoon.
Tonight
Increasing clouds. Lows 61 to 66. Northwest winds 10 to 15 mph with gusts to 30 mph.
Friday
A chance of showers in the morning. Mostly cloudy with a slight chance of thunderstorms. Chance of rain 30 percent. Highs 84 to 89. Northwest winds up to 10 mph in the morning, shifting to south in the afternoon. Gusts to 25 mph.
Friday Night
Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Chance of rain 30 percent. Lows 55 to 62. Southeast winds 10 to 15 mph with gusts to 25 mph in the evening, becoming light after midnight.
Saturday
Sunny. Highs 83 to 88. West winds 10 to 15 mph.
Saturday Night
Partly cloudy. Lows 51 to 57. Breezy.
Sunday And Sunday Night
Mostly clear. Highs 76 to 81. Lows 47 to 55.
Monday And Monday Night
Mostly clear. Highs 83 to 88. Lows 53 to 60.
Tuesday Through Wednesday
Partly cloudy. Highs 80 to 87. Lows 52 to 59.



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759 AM MDT Thu Aug 27 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database