Fresno, CA 93721 Frost Dates
Fresno, CA: when does the frost end?
Around 01/14 is the usual last spring frost, about 139 days away. Fall's first freeze usually shows up around 12/14, roughly 337 days after the last spring frost.
Fresno sits in USDA Zone 9b (25 to 30°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
Stretching the season past the first frost
With roughly 15 weeks until Fresno'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
01/14 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 02/11 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/22 and only about 1 year in 10 sees frost after that.
Fresno against the rest of the dataset
Fresno's growing season runs about 337 days, ranking 2,648 of 40,283 US ZIP codes measured here, longest to shortest. Within CA, it ranks 1,171 of 2,555.
Learn more
Before leaning on 93721's figures: local microclimates explains what one yard in Fresno can differ from the 93721 normal, while zone vs. frost date explains why Zone 9b and Fresno's frost date answer different questions.