Heavy Rainfall and Flooding Threats in the Midwest and Ohio Valley; Heat Continues in the Plains and Southeast

An active pattern will continue to bring heavy to excessive rainfall and flash flooding threats to the Midwest and Ohio Valley over the next couple of days. Dangerous heat continues across the central/southern Plains and Southeast U.S. into next week. There is potential for record-tying/breaking temperatures with many areas forecast to see their hottest temperatures so far this year. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

82°F

28°C

Humidity 28%
Wind Speed NW 5 MPH
Barometer 29.81 in (1009.48 mb)
Dewpoint 46°F (8°C)
Visibility 9.00 mi
Heat Index80°F (27°C)
Last update 13 Aug 11:20 AM MDT
Detailed forecast for

Oregon Lower Treasure Valley

Rest Of Today
Mostly sunny. Patchy smoke. A slight chance of showers and thunderstorms this afternoon. Chance of rain 20 percent. Highs 88 to 93. Northwest winds 10 to 15 mph this morning, shifting to east this afternoon.
Tonight
Increasing clouds. A chance of showers and thunderstorms. Patchy smoke. Chance of rain 30 percent. Lows 59 to 65. Southeast winds around 10 mph in the evening, shifting to northwest after midnight.
Friday
Partly cloudy with a slight chance of showers. A slight chance of thunderstorms. Patchy smoke. Thunderstorms may produce gusty winds in the afternoon. Chance of rain 20 percent. Highs 85 to 90. North winds up to 10 mph in the morning, becoming light in the afternoon.
Friday Night
Partly cloudy with a slight chance of showers and thunderstorms in the evening, then mostly cloudy after midnight. Thunderstorms may produce gusty winds in the evening. Chance of rain 20 percent. Lows 57 to 64. Northeast winds up to 10 mph in the evening, shifting to northwest after midnight.
Saturday
Patchy fog in the morning. Mostly sunny. Highs 87 to 92. Southeast winds up to 10 mph.
Saturday Night
Partly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. Chance of rain 30 percent. Lows 58 to 64.
Sunday
Patchy fog in the morning. Sunny. Highs 89 to 94.
Sunday Night Through Tuesday
Mostly cloudy. Lows 61 to 67. Highs 87 to 94.
Tuesday Night
Partly cloudy. Lows 59 to 65.
Wednesday
Partly cloudy. A slight chance of showers in the morning. Chance of rain 20 percent. Highs 83 to 88.



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755 AM MDT Thu Aug 13 2026
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database