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

Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

73°F

23°C

Humidity 53%
Wind Speed S 4 MPH
Barometer 30.03 in (1016.93 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 17 Aug 11:05 AM MDT
Extended Forecast for

34 Miles WSW Adrian OR

Flash Flood Watch August 17, 03:00pm until August 18, 12:00am
Click here for hazard details and duration
Flash Flood Watch

  • Today

    Today: Isolated showers and thunderstorms. Mostly sunny, with a high near 84. South southwest wind around 7 mph. Chance of precipitation is 20%.

    High: 84 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms before midnight. Mostly cloudy, with a low around 56. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 50%.

    Low: 56 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 90. West wind 5 to 11 mph.

    High: 90 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 56. Southwest wind 5 to 9 mph becoming calm.

    Low: 56 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 92. West wind 5 to 8 mph becoming north in the afternoon.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 54.

    Low: 54 °F

    Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 90.

    High: 90 °F

    Hot

Detailed Forecast

Today
Isolated showers and thunderstorms. Mostly sunny, with a high near 84. South southwest wind around 7 mph. Chance of precipitation is 20%.
Tonight
Scattered showers and thunderstorms before midnight. Mostly cloudy, with a low around 56. West wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 50%.
Monday
Sunny and hot, with a high near 90. West wind 5 to 11 mph.
Monday Night
Mostly clear, with a low around 56. Southwest wind 5 to 9 mph becoming calm.
Tuesday
Sunny and hot, with a high near 92. West wind 5 to 8 mph becoming north in the afternoon.
Tuesday Night
Mostly clear, with a low around 55.
Wednesday
Sunny and hot, with a high near 90.
Wednesday Night
Clear, with a low around 54.
Thursday
Sunny and hot, with a high near 90.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny and hot, with a high near 94.
Friday Night
Mostly clear, with a low around 59.
Saturday
Sunny and hot, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
34 Miles WSW Adrian OR
 43.51°N 117.67°W (Elev. 4190 ft)
Last Update:
8:04 am MDT Aug 17, 2025
Forecast Valid:
11am MDT Aug 17, 2025-6pm MDT Aug 23, 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