Hallowell, ME 04265 Frost Dates
04265, near Hallowell, ME: the frost window
Typically, the last spring freeze lands around 04/27, roughly 242 days out. Fall's first freeze usually shows up around 10/16, roughly 172 days after the last spring frost.
Hallowell sits in USDA Zone 5b (-15 to -10°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.
Stretching the season past the first frost
Hallowell's growing season runs out in roughly 7 weeks — a cold frame or greenhouse kit is the usual way to keep cool-weather crops going past the first frost.
How much risk comes with planting early here
04/27 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/15 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/07 and only about 1 year in 10 sees frost after that.
Hallowell against the rest of the dataset
At roughly 172 frost-free days, Hallowell places 28,312 of 40,283 ZIP codes in this dataset. Within ME, it ranks 110 of 456.
Learn more
Two guides worth reading on 04265: zone vs. frost date, on why Zone 5b and Hallowell's frost date answer different questions, and the frost range, on how to read the range around Hallowell's dates instead of trusting one.