Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Current conditions at

SIARD (SIAN2)

Lat: 40.39433°NLon: 117.62567°WElev: 4600.0ft.

NA

100°F

38°C

Humidity 8%
Wind Speed WSW 9 MPH
Barometer NA
Dewpoint 29°F (-2°C)
Visibility NA
Heat Index94°F (34°C)
Last update 09 Aug 06:38 PM PDT
Extended Forecast for

3 Miles ENE Unionville NV

Extreme Heat Warning August 9, 07:42pm until August 10, 08:00am
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning August 9, 07:42pm until August 10, 08:00am

    NOW until 8:00am Mon

    Extreme Heat Warning

  • Tonight

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 98. North wind 5 to 15 mph becoming southeast in the morning.

    High: 98 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65. West wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 96. Southwest wind 5 to 10 mph.

    High: 96 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 63. Southwest wind 5 to 10 mph.

    Low: 63 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 91. Southwest wind around 5 mph.

    High: 91 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 60.

    Low: 60 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 11am.  Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 68. West wind 5 to 10 mph.
Monday
Sunny, with a high near 98. North wind 5 to 15 mph becoming southeast in the morning.
Monday Night
Mostly clear, with a low around 65. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 96. Southwest wind 5 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 63. Southwest wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 91. Southwest wind around 5 mph.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 60.
Thursday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 84.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56.
Friday
A chance of showers. Partly sunny, with a high near 83.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56.
Saturday
Mostly sunny, with a high near 85.
Saturday Night
A slight chance of showers. Partly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 86.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Unionville NV
 40.46°N 118.07°W (Elev. 4432 ft)
4:30 pm PDT Aug 9, 2026
7pm PDT Aug 9, 2026-6pm PDT Aug 16, 2026
 
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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