Northwood, ND 58267 Frost Dates
When can you plant in Northwood, ND?
Around 05/11 is the usual last spring frost, about 256 days away. The first fall frost typically arrives around 09/28, about 139 frost-free days later.
Northwood sits in USDA Zone 4a (-30 to -25°F average annual minimum). The dates above are NOAA's 1991-2020 normal at the nearest reporting station, a 30-year average, not a forecast.
What to do before the first frost
About 4 weeks of growing season left in Northwood before the first fall frost — a cold frame or row cover can stretch harvest weeks past that date.
The actual range around Northwood's last frost
05/11 is the middle of 30 years of NOAA records, not a promise. Plant by 04/28 and you're betting against frost in roughly 9 years out of 10. 05/25 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Northwood compares
About 139 days separate Northwood's last and first frost, putting it 37,251 of 40,283 ZIP codes nationally. Within ND, it ranks 141 of 405.
Learn more
zone vs. frost date covers why Zone 4a and Northwood's frost date answer different questions. the frost range covers how to read the range around Northwood's dates instead of trusting one.