Davenport, ND 58021 Frost Dates
Davenport, ND: when does the frost end?
Typically, the last spring freeze lands around 05/09, roughly 254 days out. Fall's first freeze usually shows up around 10/01, roughly 143 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 Davenport, not a forecast for this year.
Stretching the season past the first frost
With roughly 5 weeks until Davenport's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Davenport's last frost
05/09 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/25 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/21 and only about 1 year in 10 sees frost after that.
Davenport against the rest of the dataset
Davenport's growing season runs about 143 days, ranking 36,635 of 40,283 US ZIP codes measured here, longest to shortest. Within ND, it ranks 94 of 405.
Learn more
Before leaning on 58021's figures: local microclimates explains what one yard in Davenport can differ from the 58021 normal, while zone vs. frost date explains why Zone 4a and Davenport's frost date answer different questions.