Alert archive / California / Frost Advisories
Frost Advisories in California, 2026
29 frost advisories in 2026. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of frost advisories reaches back to 2005.
Frost Advisories by county
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Frost Advisories
- 29
- Busiest month
- April11 frost advisories
- Busiest day
- April 15, 20262 frost advisories
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Pacific Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 11:27 PM PST | Frost Advisory | LOX | Los Angeles, Santa Barbara, Ventura | 9 hr |
| Feb 20, 8:22 PM PST | Frost Advisory | LOX | Los Angeles, Santa Barbara, Ventura | 13 hr |
| Feb 21, 7:48 PM PST | Frost Advisory | LOX | Los Angeles, Santa Barbara, Ventura | 13 hr |
| Mar 4, 3:15 PM PST | Frost Advisory | EKA | Lake, Mendocino | 18 hr |
| Mar 5, 3:17 PM PST | Frost Advisory | EKA | Mendocino | 18 hr |
| Mar 9, 12:27 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 21 hr |
| Mar 10, 1:06 PM PDT | Frost Advisory | EKA | Humboldt, Lake, Mendocino | 20 hr |
| Mar 25, 12:18 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 20 hr |
| Mar 26, 11:55 AM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 21 hr |
| Mar 27, 12:40 PM PDT | Frost Advisory | EKA | Mendocino | 20 hr |
| Apr 2, 12:37 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 20 hr |
| Apr 3, 11:50 AM PDT | Frost Advisory | EKA | Lake, Mendocino | 21 hr |
| Apr 12, 12:24 PM PDT | Frost Advisory | EKA | Lake, Mendocino | 20 hr |
| Apr 13, 1:14 PM PDT | Frost Advisory | EKA | Lake, Mendocino | 19 hr |
| Apr 15, 5:54 AM PDT | Frost Advisory | MFR | Siskiyou | 27 hr |
| Apr 15, 2:50 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 18 hr |
| Apr 16, 3:08 AM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 10 hr |
| Apr 16, 12:49 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Mendocino | 20 hr |
| Apr 17, 11:09 AM PDT | Frost Advisory | EKA | Humboldt, Lake, Mendocino | 21 hr |
| Apr 22, 12:12 PM PDT | Frost Advisory | EKA | Del Norte, Humboldt, Lake, Mendocino | 20 hr |
| Apr 26, 12:26 PM PDT | Frost Advisory | EKA | Humboldt, Trinity | 21 hr |
| May 18, 1:46 AM PDT | Frost Advisory | EKA | Humboldt, Trinity | 6 hr |
| Jun 2, 8:08 PM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 36 hr |
| Jun 5, 9:26 PM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 36 hr |
| Jun 8, 10:10 PM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 34 hr |
| Jun 10, 6:16 AM PDT | Frost Advisory | MFR | Modoc, Siskiyou | 25 hr |
| Aug 31, 12:19 PM PDT | Frost Advisory | MFR | Modoc | 40 hr |
| Sep 3, 12:39 PM PDT | Frost Advisory | EKA | Lake, Mendocino, Trinity | 17 hr |
| Sep 7, 11:06 AM PDT | Frost Advisory | MFR | Modoc | 22 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.