Bath, ME 04556 Frost Dates
Bath, ME: when does the frost end?
The last spring frost here typically falls around 05/08, about 253 days from today. Fall's first freeze usually shows up around 10/07, roughly 151 days after the last spring frost.
Bath 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
With roughly 6 weeks until Bath's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
Why 05/08 isn't a guarantee
05/08 is the middle of 30 years of NOAA records, not a promise. Getting tender plants in by 04/26 carries real risk, frost has hit that late in about 9 of 10 years here. Wait until 05/20 and only about 1 year in 10 sees frost after that.
Bath against the rest of the dataset
About 151 days separate Bath's last and first frost, putting it 34,974 of 40,283 ZIP codes nationally. Within ME, it ranks 248 of 456.
Learn more
Before leaning on 04556's figures: the frost range explains how to read the range around Bath's dates instead of trusting one, while local microclimates explains what one yard in Bath can differ from the 04556 normal.