Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

54°F

12°C

Humidity	54%
Wind Speed	N 0 MPH
Barometer	30.05 in (1017.61 mb)
Dewpoint	37°F (3°C)
Visibility	10.00 mi
Last update	31 Aug 09:35 AM MDT

More Information:

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

Detailed forecast for

Oregon Lower Treasure Valley

Today

Sunny, warmer with highs 85 to 90. Southeast winds up to 10 mph.

Tonight

Increasing clouds. Lows 54 to 61. Light winds.

Tuesday

Mostly cloudy. Patchy smoke in the afternoon. Highs 83 to 88. Southeast winds around 10 mph with gusts to 25 mph.

Tuesday Night

Patchy smoke in the evening. Partly cloudy in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Chance of rain 20 percent. Lows 55 to 61. Northeast winds around 10 mph with gusts to 20 mph in the evening, shifting to west with gusts to 30 mph after midnight.

Wednesday

Partly sunny. Highs 74 to 79. West winds 10 to 15 mph with gusts to 30 mph.

Wednesday Night

Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Chance of rain 30 percent. Lows 52 to 57.

Thursday

Mostly cloudy with a slight chance of showers and thunderstorms. Chance of rain 20 percent. Highs 72 to 77.

Thursday Night

A slight chance of thunderstorms in the evening. Mostly cloudy with a slight chance of showers. Patchy fog in the evening. Areas of fog after midnight. Chance of rain 20 percent. Lows 46 to 52.

Friday

Areas of fog in the morning. Partly cloudy with a 20 percent chance of showers. Highs 73 to 78.

Friday Night

Partly cloudy. Patchy fog after midnight. Lows 47 to 53.

Saturday

Areas of fog in the morning. Mostly sunny. Highs 77 to 82.

Saturday Night

Increasing clouds. Lows 51 to 57.

Sunday

Patchy fog in the morning. Mostly sunny. Highs 77 to 82.