Gilby, ND 58235 Frost Dates
When can you plant in Gilby, ND?
Typically, the last spring freeze lands around 05/16, roughly 261 days out. The first fall frost typically arrives around 09/27, about 133 frost-free days later.
The USDA Plant Hardiness Zone Map puts Gilby in Zone 4a (-30 to -25°F average annual minimum); frost dates are NOAA's 1991-2020 station normal, not this year's forecast.
What to do before the first frost
About 4 weeks of growing season left in Gilby before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Gilby's last frost
05/16 is the middle of 30 years of NOAA records, not a promise. Plant by 05/03 and you're betting against frost in roughly 9 years out of 10. 05/31 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Gilby compares
Gilby's growing season runs about 133 days, ranking 38,136 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 288 of 405.
Learn more
local microclimates covers what one yard in Gilby can differ from the 58235 normal. zone vs. frost date covers why Zone 4a and Gilby's frost date answer different questions.