Warwick, ND 58381 Frost Dates
Warwick, ND: when does the frost end?
The last spring frost here typically falls around 05/12, about 257 days from today. Fall's first freeze usually shows up around 09/28, roughly 139 days after the last spring frost.
The USDA Plant Hardiness Zone Map puts Warwick in Zone 4a (-30 to -25°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 4 weeks until Warwick's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/12 isn't a guarantee
05/12 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/30 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/25 and only about 1 year in 10 sees frost after that.
Warwick against the rest of the dataset
Warwick's growing season runs about 139 days, ranking 37,322 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 172 of 405.
Learn more
Before leaning on 58381's figures: the frost range explains how to read the range around Warwick's dates instead of trusting one, while local microclimates explains what one yard in Warwick can differ from the 58381 normal.