Hayward, CA 94552 Frost Dates
Hayward, CA: when does the frost end?
The last spring frost here typically falls around 01/02, about 127 days from today. Fall's first freeze usually shows up around 12/25, roughly 365 days after the last spring frost.
Hayward 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 17 weeks until Hayward's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 01/02 isn't a guarantee
01/02 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 12/13 and only about 1 year in 10 sees frost after that.
Hayward against the rest of the dataset
At roughly 365 frost-free days, Hayward places 391 of 40,283 ZIP codes in this dataset. Within CA, it ranks 142 of 2,555.
Learn more
Before leaning on 94552's figures: local microclimates explains what one yard in Hayward can differ from the 94552 normal, while zone vs. frost date explains why Zone 9b and Hayward's frost date answer different questions.