Berlin, NH 03595 Frost Dates
Frost dates for Berlin, NH, ZIP 03595
Typically, the last spring freeze lands around 05/27, roughly 272 days out. The first fall frost typically arrives around 09/19, about 116 frost-free days later.
Berlin sits in USDA Zone 4b (-25 to -20°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
Zone 4b around Berlin has about 3 weeks left before the first fall frost — that's the usual window to get a cold frame up if you want to keep harvesting past it.
The actual range around Berlin's last frost
05/27 is the middle of 30 years of NOAA records, not a promise. Plant by 05/11 and you're betting against frost in roughly 9 years out of 10. 06/10 is the safer bet, historically only a 1-in-10 chance of frost that late.
How Berlin compares
Berlin's growing season runs about 116 days, ranking 39,277 of 40,283 US ZIP codes measured here, longest to shortest. Within NH, it ranks 257 of 260.
Learn more
the frost range explains how to read the range around Berlin's dates instead of trusting one, and local microclimates explains what one yard in Berlin can differ from the 03595 normal.