Pittsburg, CA Frost Dates
The last spring frost in Pittsburg usually comes around January 9 and the first fall frost around December 14.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | January 9 | December 14 |
| Hard freeze, 28°F | December 30 | December 23 |
Growing season: about 343 days.
Frequently asked questions
When is the last frost in Pittsburg, CA?
The median date of the last spring frost (32°F) is January 9. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past January 9 lowers the risk for tender plants.
When is the first frost in Pittsburg?
The median date of the first fall frost (32°F) is December 14, and a hard freeze (28°F) usually follows around December 23.
How long is the growing season in Pittsburg?
About 343 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00023254. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.