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

Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

SIARD (SIAN2)

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

NA

79°F

26°C

Humidity 14%
Wind Speed WSW 9 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Heat Index78°F (26°C)
Last update 21 Mar 03:38 PM PDT
Extended Forecast for

3 Miles ENE Unionville NV

Lake Wind Advisory until March 21, 08:00pm
Click here for hazard details and duration
Lake Wind Advisory
  •  
    Lake Wind Advisory until March 21, 08:00pm

    NOW until 8:00pm Sat

    Lake Wind Advisory

  • This Afternoon

    High: 78 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Breezy, with a west wind 10 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph.

    Low: 43 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Northeast wind 5 to 10 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 45. North wind around 5 mph.

    Low: 45 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 76. North wind 5 to 10 mph becoming south in the morning. Winds could gust as high as 20 mph.

    High: 76 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 48. Southwest wind 5 to 15 mph.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 78. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.
Tonight
Partly cloudy, with a low around 43. Breezy, with a west wind 10 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph.
Sunday
Mostly sunny, with a high near 72. Northeast wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 45. North wind around 5 mph.
Monday
Mostly sunny, with a high near 76. North wind 5 to 10 mph becoming south in the morning. Winds could gust as high as 20 mph.
Monday Night
Partly cloudy, with a low around 48. Southwest wind 5 to 15 mph.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 46.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Unionville NV
 40.46°N 118.07°W (Elev. 4432 ft)
Last Update:
11:20 am PDT Mar 21, 2026
Forecast Valid:
3pm PDT Mar 21, 2026-6pm PDT Mar 27, 2026
 
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