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CALWIRE Weather Roundup (Monday, August 24, 2026)

By Calwire Weather Desk

  By Calwire Weather Desk

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27 active weather alerts statewide today, led by a extreme heat warning for San Diego County Inland Valleys, plus coverage for San Diego County Mountains, San Diego County Coastal Areas.

Related: CALWIRE Weather Roundup (Monday, August 3, 2026) · CALWIRE Stock Market Open Roundup (Monday, August 24, 2026)

EXTREME HEAT WARNING — San Diego County Inland Valleys

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — San Diego County Mountains

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

HEAT ADVISORY — San Diego County Coastal Areas

Heat Advisory issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

HEAT ADVISORY — Orange County Coastal

Heat Advisory issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Orange County Inland

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Santa Ana Mountains and Foothills

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — San Bernardino and Riverside County Valleys-The Inland Empire

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WARNING — Apple and Lucerne Valleys

Extreme Heat Warning issued August 24 at 1:58AM PDT until August 28 at 8:00PM PDT by NWS San Diego CA

EXTREME HEAT WATCH — Cuyama Valley

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Santa Clarita Valley

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Catalina and Santa Barbara Islands

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

EXTREME HEAT WATCH — Western Antelope Valley Foothills

Extreme Heat Watch issued August 23 at 12:06AM PDT until August 28 at 8:00PM PDT by NWS Los Angeles/Oxnard CA

RED FLAG WARNING — Western Klamath National Forest

Red Flag Warning issued August 24 at 5:06AM PDT until August 24 at 8:00PM PDT by NWS Medford OR

HEAT ADVISORY — Coalinga - Avenal

Heat Advisory issued August 24 at 1:36AM PDT until August 26 at 11:00PM PDT by NWS Hanford CA

EXTREME HEAT WARNING — Indian Wells Valley

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Filed Under: Weather CALWIRE Weather Roundup Monday