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

Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

72°F

22°C

Humidity 53%
Wind Speed N 0 MPH
Barometer 29.85 in (1010.84 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 15 Aug 11:20 PM MDT
Extended Forecast for

Nyssa OR

Flash Flood Watch August 16, 12:00pm until August 17, 12:00am
Click here for hazard details and duration
Flash Flood Watch

  • Tonight

    Tonight: Mostly clear, with a low around 63. Light and variable wind becoming northwest around 5 mph after midnight.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny and hot, with a high near 92. Northwest wind around 6 mph.

    High: 92 °F

    Hot

  • Saturday Night

    Saturday Night: A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. West northwest wind 7 to 11 mph, with gusts as high as 22 mph.

    Low: 65 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 89. Northwest wind 3 to 6 mph.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. Light northwest wind.

    Low: 62 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 93.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 64.

    Low: 64 °F

    Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. Light and variable wind becoming northwest around 5 mph after midnight.
Saturday
Mostly sunny and hot, with a high near 92. Northwest wind around 6 mph.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 65. West northwest wind 7 to 11 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 89. Northwest wind 3 to 6 mph.
Sunday Night
A 50 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 62. Light northwest wind.
Monday
Sunny and hot, with a high near 93.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny and hot, with a high near 97.
Tuesday Night
Clear, with a low around 64.
Wednesday
Sunny and hot, with a high near 96.
Wednesday Night
Clear, with a low around 63.
Thursday
Sunny and hot, with a high near 98.
Thursday Night
Mostly clear, with a low around 64.
Friday
Sunny and hot, with a high near 98.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nyssa OR
 43.88°N 117°W (Elev. 2110 ft)
Last Update:
3:04 pm MDT Aug 15, 2025
Forecast Valid:
11pm MDT Aug 15, 2025-6pm MDT Aug 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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