Thomaston, ME Weather & Growing Conditions
Tonight
49°F
Chance Rain Showers
A chance of rain showers before 2am. Cloudy, with a low around 49. Southeast wind 0 to 5 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Chance Rain Showers | 0 to 5 mph SE | 26% |
| Wednesday | 66°F | Partly Sunny | 0 to 10 mph SW | 7% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 65°F | Partly Sunny then Isolated Rain Showers | 5 to 15 mph SW | 16% |
| Thursday Night | 55°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 22% |
| Friday | 65°F | Light Rain Likely | 5 mph S | 71% |
| Friday Night | 50°F | Light Rain | 0 to 5 mph E | 86% |
| Saturday | 59°F | Light Rain | 5 to 10 mph NE | 84% |
| Saturday Night | 43°F | Light Rain Likely | 5 mph NW | 68% |
| Sunday | 57°F | Chance Light Rain | 5 to 10 mph NW | 42% |
| Sunday Night | 37°F | Slight Chance Light Rain then Mostly Cloudy | 0 to 5 mph W | 21% |
| Monday | 54°F | Partly Sunny then Slight Chance Light Rain | 5 to 10 mph NW | 21% |
| Monday Night | 34°F | Slight Chance Light Rain | 5 to 10 mph NW | 22% |
| Tuesday | 53°F | Slight Chance Light Rain | 10 to 15 mph W | 22% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Thomaston, ME
Last spring frost
Apr 27
First fall frost
Oct 25
Growing season
178 days
Hardiness zone
6a
Explore more for Thomaston, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Tenants Harbor, Me (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.