Surrey, ND 58785 Frost Dates
Surrey, ND: when does the frost end?
Around 05/10 is the usual last spring frost, about 255 days away. Fall's first freeze usually shows up around 10/01, roughly 144 days after the last spring frost.
Zone 4a (-30 to -25°F average annual minimum) comes from the USDA Plant Hardiness Zone Map; the frost dates above are the 1991-2020 normal at the nearest reporting NOAA station for Surrey, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Surrey's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/10 isn't a guarantee
05/10 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/27 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/22 and only about 1 year in 10 sees frost after that.
Surrey against the rest of the dataset
Surrey's growing season runs about 144 days, ranking 36,395 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 69 of 405.
Learn more
Before leaning on 58785's figures: the frost range explains how to read the range around Surrey's dates instead of trusting one, while local microclimates explains what one yard in Surrey can differ from the 58785 normal.