Westbrook, ME 04096 Frost Dates
Westbrook, ME: when does the frost end?
The last spring frost here typically falls around 04/28, about 243 days from today. Fall's first freeze usually shows up around 10/19, roughly 172 days after the last spring frost.
Westbrook sits in USDA Zone 6a (-10 to -5°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 7 weeks until Westbrook's first fall frost, a row cover or cold frame is what stretches the last few weeks of harvest here.
The actual range around Westbrook's last frost
04/28 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 05/10 and only about 1 year in 10 sees frost after that.
Westbrook against the rest of the dataset
About 172 days separate Westbrook's last and first frost, putting it 28,192 of 40,283 ZIP codes nationally. Within ME, it ranks 86 of 456.
Learn more
Before leaning on 04096's figures: local microclimates explains what one yard in Westbrook can differ from the 04096 normal, while zone vs. frost date explains why Zone 6a and Westbrook's frost date answer different questions.