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 >

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 WNW 8 MPH
Barometer NA
Dewpoint N/A
Visibility 10.00 mi
Last update NA
Extended Forecast for

13 Miles ENE Livingston CA

Heat Advisory September 9, 10:43pm until September 10, 10:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 9, 10:43pm until September 10, 10:00pm

    NOW until 10:00pm Thu

    Heat Advisory

  • Tonight

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 98. Light north northwest wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.

    High: 98 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 65. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 93. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 93 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 86. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 86 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 83. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 83 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 68. North northwest wind around 5 mph becoming calm.
Thursday
Sunny, with a high near 98. Light north northwest wind becoming northwest 10 to 15 mph in the morning. Winds could gust as high as 20 mph.
Thursday Night
Partly cloudy, with a low around 65. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday
Sunny, with a high near 93. West northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday Night
Mostly clear, with a low around 62. North northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday
Sunny, with a high near 86. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 57. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
Sunny, with a high near 83. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly clear, with a low around 57. Northwest wind 10 to 15 mph becoming light north northwest in the evening. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 86. Calm wind becoming west northwest around 5 mph in the afternoon.
Monday Night
Clear, with a low around 57. Northwest wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 85. Calm wind becoming west northwest around 5 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 56. Northwest wind around 5 mph.
Wednesday
Sunny, with a high near 84. West northwest wind around 5 mph.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles ENE Livingston CA
 37.5°N 120.54°W (Elev. 197 ft)
Last Update:
9:56 pm PDT Sep 9, 2026
Forecast Valid:
10pm PDT Sep 9, 2026-6pm PDT Sep 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation