Vacaville, CA Frost Dates
The last spring frost in Vacaville usually comes around February 18 and the first fall frost around November 28.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | February 18 | November 28 |
| Hard freeze, 28°F | January 15 | December 10 |
Growing season: about 283 days.
Frequently asked questions
When is the last frost in Vacaville, CA?
The median date of the last spring frost (32°F) is February 18. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past February 18 lowers the risk for tender plants.
When is the first frost in Vacaville?
The median date of the first fall frost (32°F) is November 28, and a hard freeze (28°F) usually follows around December 10.
How long is the growing season in Vacaville?
About 283 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00093241. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.