Pittsburg, CA 94565 Frost Dates
Pittsburg, CA: when does the frost end?
The last spring frost here typically falls around 01/09, about 134 days from today. Fall's first freeze usually shows up around 12/14, roughly 343 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Pittsburg in Zone 9b (25 to 30°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
Stretching the season past the first frost
With roughly 15 weeks until Pittsburg's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
How much risk comes with planting early here
01/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/12 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/16 and only about 1 year in 10 sees frost after that.
Pittsburg against the rest of the dataset
Pittsburg's growing season runs about 343 days, ranking 2,522 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,111 of 2,555.
Learn more
Before leaning on 94565's figures: the frost range explains how to read the range around Pittsburg's dates instead of trusting one, while local microclimates explains what one yard in Pittsburg can differ from the 94565 normal.