Bishop, CA 89045 Frost Dates
Bishop, CA: when does the frost end?
Around 04/27 is the usual last spring frost, about 242 days away. Fall's first freeze usually shows up around 10/22, roughly 174 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Bishop in Zone 6a (-10 to -5°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 8 weeks until Bishop's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Bishop's last frost
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/09 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/28 and only about 1 year in 10 sees frost after that.
Bishop against the rest of the dataset
At roughly 174 frost-free days, Bishop places 27,461 of 40,283 ZIP codes in this dataset. Within CA, it ranks 2,370 of 2,555.
Learn more
Before leaning on 89045's figures: local microclimates explains what one yard in Bishop can differ from the 89045 normal, while zone vs. frost date explains why Zone 6a and Bishop's frost date answer different questions.