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NOAA's National Weather Service
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WARNINGS - WATCHES - ADVISORIES - STATEMENTS
Updates every 15 Minutes
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 COLD WEATHER ADVISORY |
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| Los Angeles County | ||
| Effective: Sun, 12/28 11:13am | Severity: Moderate | |
| Updated: December 28, 2025 12:00 pm | Urgency: Expected | |
| Expires: Mon, 12/29 9:00am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys - East Bay Interior Valleys - Santa Clara Valley Including San Jose - Eastern Santa Clara Hills - East Bay Hills - Southern Salinas Valley/Arroyo Seco and Lake San Antonio - Santa Lucia Mountains and Los Padres National Forest - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park - Northern Salinas Valley/Hollister Valley and Carmel Valley | ||
Alert
Details:
* WHAT...Cold conditions with temperatures as low as 34 expected. * WHERE...Interior Central Coast, The Santa Clara Valley and Eastern Hills, The East Bay Hills and Valleys, and North Bay Interior Valleys. * WHEN...From 1 AM to 9 AM PST Monday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Information: Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation. |
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| COLD WEATHER ADVISORY |
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| Marin County | ||
| Effective: Sun, 12/28 11:13am | Severity: Moderate | |
| Updated: December 28, 2025 12:00 pm | Urgency: Expected | |
| Expires: Mon, 12/29 9:00am | Certainty: Likely | |
| Areas Affected: North Bay Interior Valleys - East Bay Interior Valleys - Santa Clara Valley Including San Jose - Eastern Santa Clara Hills - East Bay Hills - Southern Salinas Valley/Arroyo Seco and Lake San Antonio - Santa Lucia Mountains and Los Padres National Forest - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park - Northern Salinas Valley/Hollister Valley and Carmel Valley | ||
Alert
Details:
* WHAT...Cold conditions with temperatures as low as 34 expected. * WHERE...Interior Central Coast, The Santa Clara Valley and Eastern Hills, The East Bay Hills and Valleys, and North Bay Interior Valleys. * WHEN...From 1 AM to 9 AM PST Monday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Information: Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation. |
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