Marine and Coastal Impacts from Imelda; Unsettled Weather in the West

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine conditions and rip currents to much of the East Coast over the next several days. A series of Pacific frontal systems will bring waves of showers and thunderstorms to portions of northern California and the Pacific Northwest through midweek. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Overcast

55°F

13°C

Humidity 93%
Wind Speed NNW 3 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 54°F (12°C)
Visibility 7.00 mi
Last update 30 Sep 07:30 AM MDT
Extended Forecast for

Ontario Municipal OR

  • Today

    Today: A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon, then a slight chance of showers and thunderstorms after noon.  Patchy fog before noon.  Otherwise, partly sunny, with a high near 74. South wind 3 to 8 mph.  Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers and
    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers.  Cloudy, then gradually becoming partly cloudy, with a low around 52. South wind 5 to 7 mph becoming calm  after midnight.

    Low: 52 °F

    Slight Chance
    Showers

  • Wednesday

    Wednesday: A 20 percent chance of showers after noon.  Partly sunny, with a high near 70. Calm wind becoming south southeast 5 to 7 mph in the morning.

    High: 70 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 49. South wind around 6 mph becoming calm  in the evening.

    Low: 49 °F

    Slight Chance
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 70. Light west wind.

    High: 70 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon, then a slight chance of showers and thunderstorms after noon. Patchy fog before noon. Otherwise, partly sunny, with a high near 74. South wind 3 to 8 mph. Chance of precipitation is 50%.
Tonight
A 20 percent chance of showers. Cloudy, then gradually becoming partly cloudy, with a low around 52. South wind 5 to 7 mph becoming calm after midnight.
Wednesday
A 20 percent chance of showers after noon. Partly sunny, with a high near 70. Calm wind becoming south southeast 5 to 7 mph in the morning.
Wednesday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 49. South wind around 6 mph becoming calm in the evening.
Thursday
Partly sunny, with a high near 70. Light west wind.
Thursday Night
Mostly cloudy, with a low around 47.
Friday
Mostly sunny, with a high near 69.
Friday Night
Mostly clear, with a low around 42.
Saturday
Mostly sunny, with a high near 67.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 64.
Sunday Night
Partly cloudy, with a low around 38.
Monday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Ontario Municipal OR
 44.03°N 117°W (Elev. 2139 ft)
3:04 am MDT Sep 30, 2025
7am MDT Sep 30, 2025-6pm MDT Oct 6, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database