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

Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Ontario Municipal Airport (KONO)

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

Clear

57°F

14°C

Humidity 67%
Wind Speed N 0 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 09 Sep 10:35 PM MDT
Extended Forecast for

New Plymouth ID

  • Tonight

    Tonight: Mostly clear, with a low around 47. Southeast wind around 5 mph becoming calm after midnight.

    Low: 47 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 86. Calm wind becoming west southwest around 5 mph.

    High: 86 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51. South southeast wind around 6 mph becoming northwest in the evening.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 79. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 48. Calm wind becoming west around 5 mph.

    Low: 48 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after noon. Mostly sunny, with a high near 77.

    High: 77 °F

    Sunny then
    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: A 40 percent chance of showers. Partly sunny, with a high near 65.

    High: 65 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Patchy fog after 10pm. Otherwise, mostly clear, with a low around 42.

    Low: 42 °F

    Patchy Fog

Detailed Forecast

Tonight
Mostly clear, with a low around 47. Southeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 86. Calm wind becoming west southwest around 5 mph.
Thursday Night
Mostly clear, with a low around 51. South southeast wind around 6 mph becoming northwest in the evening.
Friday
Sunny, with a high near 79. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Friday Night
Mostly clear, with a low around 48. Calm wind becoming west around 5 mph.
Saturday
A 20 percent chance of showers after noon. Mostly sunny, with a high near 77.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Sunday
A 40 percent chance of showers. Partly sunny, with a high near 65.
Sunday Night
Patchy fog after 10pm. Otherwise, mostly clear, with a low around 42.
Monday
Patchy fog before 10am. Otherwise, sunny, with a high near 66.
Monday Night
Patchy fog. Otherwise, mostly clear, with a low around 43.
Tuesday
Areas of fog. Otherwise, sunny, with a high near 71.
Tuesday Night
Patchy fog. Otherwise, mostly clear, with a low around 45.
Wednesday
Areas of fog. Otherwise, mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Plymouth ID
 43.96°N 116.81°W (Elev. 2254 ft)
Last Update:
12:29 pm MDT Sep 9, 2026
Forecast Valid:
10pm MDT Sep 9, 2026-6pm MDT Sep 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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