Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

72°F

22°C

Humidity	35%
Wind Speed	WSW 5 MPH
Barometer	29.91 in (1012.87 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Last update	06 Sep 03:00 PM MDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Ontario ORSimilar City Names

Tonight
Low: 49 °F
Showers
Likely and
Patchy Fog
Labor Day
High: 71 °F
Areas Fog
then Sunny
Monday Night
Low: 46 °F
Mostly Clear
Tuesday
High: 75 °F
Patchy Fog
then Sunny
Tuesday Night
Low: 48 °F
Mostly Clear
Wednesday
High: 79 °F
Sunny
Wednesday Night
Low: 52 °F
Mostly Clear
Thursday
High: 82 °F
Sunny
Thursday Night
Low: 55 °F
Mostly Clear

Detailed Forecast

Tonight

Showers and thunderstorms likely before 4am, then a slight chance of showers between 4am and 5am. Patchy fog after 10pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 49. West wind 10 to 15 mph becoming light and variable in the evening. Winds could gust as high as 25 mph. Chance of precipitation is 70%.

Labor Day

Areas of fog before 10am. Otherwise, mostly sunny, with a high near 71. West southwest wind 5 to 8 mph becoming calm in the afternoon.

Monday Night

Mostly clear, with a low around 46. Calm wind.

Tuesday

Patchy fog before 8am. Otherwise, sunny, with a high near 75. Calm wind.

Tuesday Night

Mostly clear, with a low around 48. Calm wind.

Wednesday

Sunny, with a high near 79.

Wednesday Night

Mostly clear, with a low around 52.