Strong Atmospheric River Bringing Heavy Rain to the Pacific Northwest; Areas of Snow in the North-Central and Eastern U.S.

A strong atmospheric river will bring prolonged heavy rainfall along with gusty winds to the Pacific Northwest through much of this week. The heavy rainfall may lead to widespread urban and river flooding. Accumulating snow is expected over parts of the central Appalachians and Mid-Atlantic today as well as the Upper Midwest and the Upper Great Lakes this evening into Tuesday. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Overcast

39°F

4°C

Humidity	93%
Wind Speed	N 3 MPH
Barometer	30.27 in (1025.06 mb)
Dewpoint	37°F (3°C)
Visibility	10.00 mi
Last update	08 Dec 02:05 PM MST

More Information:

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

Extended Forecast for

Ontario Municipal OR

This Afternoon
High: 49 °F
Chance Rain
Tonight
Low: 43 °F
Rain Likely
Tuesday
High: 53 °F
Rain Likely
Tuesday Night
Low: 45 °F
Rain Likely
and Patchy
Fog
Wednesday
High: 62 °F
Chance Rain
Wednesday Night
Low: 41 °F
Mostly Cloudy
Thursday
High: 59 °F
Partly Sunny
Thursday Night
Low: 38 °F
Partly Cloudy
then Patchy
Fog
Friday
High: 55 °F
Patchy Fog
then Mostly
Sunny

Detailed Forecast

This Afternoon

A 40 percent chance of rain. Mostly cloudy, with a high near 49. Light north northeast wind.

Tonight

Rain likely. Cloudy, with a low around 43. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 60%.

Tuesday

Rain likely, mainly after 11am. Cloudy, with a high near 53. South wind 5 to 8 mph becoming north northeast in the afternoon. Chance of precipitation is 70%.

Tuesday Night

Rain likely, mainly before 11pm. Patchy fog between 8pm and 11pm. Otherwise, mostly cloudy, with a low around 45. Light and variable wind. Chance of precipitation is 60%.

Wednesday

A 30 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 62. South southwest wind 5 to 8 mph.

Wednesday Night

Mostly cloudy, with a low around 41.

Thursday

Partly sunny, with a high near 59.

Thursday Night

Patchy fog after 2am. Otherwise, partly cloudy, with a low around 38.

Friday

Patchy fog before 11am. Otherwise, partly sunny, with a high near 55.

Friday Night

Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 33.