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

Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Merced / Castle Air Force Base (KMER)

Lat: 37.36667°NLon: 120.56667°WElev: 187.0ft.

Clear

N/A

Humidity NA
Wind Speed NNW 9 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update NA
Extended Forecast for

9 Miles NNW Merced CA

Heat Advisory August 4, 12:02pm until August 5, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 4, 12:02pm until August 5, 08:00pm

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 102 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 63. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    Low: 63 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 98. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 98 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62. Northwest wind around 10 mph, with gusts as high as 15 mph.

    Low: 62 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 99. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 99 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 64. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 100. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 100 °F

    Hot

  • Friday Night

    Friday Night: Clear, with a low around 64. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Clear

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 102. West northwest wind 5 to 10 mph.
Tonight
Clear, with a low around 63. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
Sunny, with a high near 98. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Clear, with a low around 62. Northwest wind around 10 mph, with gusts as high as 15 mph.
Thursday
Sunny, with a high near 99. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Thursday Night
Clear, with a low around 64. Northwest wind around 10 mph, with gusts as high as 20 mph.
Friday
Sunny and hot, with a high near 100. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
Clear, with a low around 64. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Saturday
Sunny and hot, with a high near 101. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 64. Northwest wind 5 to 15 mph, with gusts as high as 20 mph.
Sunday
Sunny and hot, with a high near 101. West wind around 5 mph.
Sunday Night
Mostly clear, with a low around 65. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Monday
Sunny, with a high near 99. West wind around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Merced CA
 37.43°N 120.55°W (Elev. 200 ft)
Last Update:
11:56 am PDT Aug 4, 2026
Forecast Valid:
12pm PDT Aug 4, 2026-6pm PDT Aug 10, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation