National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

43°F

6°C

Humidity 81%
Wind Speed N 0 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 14 Nov 09:35 PM MST
Extended Forecast for

Ontario Municipal OR

  • Tonight

    Tonight: Partly cloudy, with a low around 35. Calm wind.

    Low: 35 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 58. Calm wind.

    High: 58 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of rain after 11pm. Increasing clouds, with a low around 40. Calm wind.

    Low: 40 °F

    Slight Chance
    Rain

  • Sunday

    Sunday: Rain likely, mainly before 11am. Mostly cloudy, with a high near 54. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Rain Likely
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 43. Calm wind.

    Low: 43 °F

    Chance Rain

  • Monday

    Monday: A 40 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 55.

    High: 55 °F

    Chance Rain

  • Monday Night

    Monday Night: A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 38.

    Low: 38 °F

    Chance Rain

  • Tuesday

    Tuesday: Partly sunny, with a high near 53.

    High: 53 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 35. Calm wind.
Saturday
Mostly sunny, with a high near 58. Calm wind.
Saturday Night
A 20 percent chance of rain after 11pm. Increasing clouds, with a low around 40. Calm wind.
Sunday
Rain likely, mainly before 11am. Mostly cloudy, with a high near 54. Calm wind. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 43. Calm wind.
Monday
A 40 percent chance of rain, mainly before 11am. Mostly cloudy, with a high near 55.
Monday Night
A 30 percent chance of rain, mainly before 11pm. Mostly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 53.
Tuesday Night
Partly cloudy, with a low around 33.
Wednesday
Mostly sunny, with a high near 52.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 50.
Thursday Night
A 20 percent chance of rain. Partly cloudy, with a low around 31.
Friday
A 10 percent chance of rain. Mostly sunny, with a high near 50.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
Last Update:
7:51 pm MST Nov 14, 2025
Forecast Valid:
9pm MST Nov 14, 2025-6pm MST Nov 21, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation