Trinidad, CA 95570 Frost Dates
Trinidad, CA: when does the frost end?
Around 03/08 is the usual last spring frost, about 192 days away. Fall's first freeze usually shows up around 11/30, roughly 262 days after the last spring frost.
Trinidad 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 13 weeks until Trinidad'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
03/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 01/13 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 04/15 and only about 1 year in 10 sees frost after that.
Trinidad against the rest of the dataset
About 262 days separate Trinidad's last and first frost, putting it 6,249 of 40,283 ZIP codes nationally. Within CA, it ranks 2,034 of 2,555.
Learn more
Before leaning on 95570's figures: local microclimates explains what one yard in Trinidad can differ from the 95570 normal, while zone vs. frost date explains why Zone 9b and Trinidad's frost date answer different questions.