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

86°F

30°C

Humidity 33%
Wind Speed SE 6 MPH
Barometer 29.93 in (1013.55 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 17 Aug 04:35 PM MDT
Extended Forecast for

7 Miles ESE New Plymouth ID

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

    NOW until 12:00am Mon

    Flash Flood Watch

  • This Afternoon

    High: 88 °F

    Sunny

  • Tonight

    Tonight: Isolated showers and thunderstorms. Partly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 20%.

    Low: 62 °F

    Isolated
    T-storms

  • Monday

    Monday: Sunny and hot, with a high near 94. Light and variable wind.

    High: 94 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. Calm wind becoming north northeast around 5 mph.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 98. Light and variable wind.

    High: 98 °F

    Hot

  • Tuesday Night

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

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Wednesday Night

    Wednesday Night: Clear, with a low around 61.

    Low: 61 °F

    Clear

Detailed Forecast

This Afternoon
Sunny, with a high near 88. Light northwest wind.
Tonight
Isolated showers and thunderstorms. Partly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 20%.
Monday
Sunny and hot, with a high near 94. Light and variable wind.
Monday Night
Mostly clear, with a low around 63. Calm wind becoming north northeast around 5 mph.
Tuesday
Sunny and hot, with a high near 98. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Clear, with a low around 61.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
Clear, with a low around 59.
Friday
Sunny and hot, with a high near 98.
Friday Night
Mostly clear, with a low around 63.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Partly cloudy, with a low around 65.
Sunday
Sunny and hot, with a high near 98.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
7 Miles ESE New Plymouth ID
 43.91°N 116.7°W (Elev. 2300 ft)
Last Update:
3:05 pm MDT Aug 17, 2025
Forecast Valid:
4pm MDT Aug 17, 2025-6pm MDT Aug 24, 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