Thomaston, ME Weather & Growing Conditions
Overnight
50°F
Slight Chance Rain Showers
A slight chance of rain showers before 1am. Cloudy, with a low around 50. South wind 0 to 5 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Slight Chance Rain Showers | 0 to 5 mph S | 17% |
| Wednesday | 64°F | Partly Sunny | 0 to 10 mph SW | 7% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph SW | 4% |
| Thursday | 64°F | Mostly Cloudy then Isolated Rain Showers | 10 to 15 mph SW | 17% |
| Thursday Night | 55°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 24% |
| Friday | 64°F | Light Rain Likely | 5 mph S | 72% |
| Friday Night | 51°F | Light Rain | 0 to 10 mph SE | 87% |
| Saturday | 56°F | Light Rain | 10 to 15 mph SE | 85% |
| Saturday Night | 46°F | Light Rain Likely | 5 to 10 mph NW | 69% |
| Sunday | 55°F | Chance Light Rain | 5 to 10 mph W | 43% |
| Sunday Night | 42°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 21% |
| Monday | 53°F | Slight Chance Light Rain | 10 to 15 mph NW | 22% |
| Monday Night | 39°F | Slight Chance Light Rain | 10 mph NW | 22% |
| Tuesday | 52°F | Slight Chance Light Rain | 10 to 15 mph W | 23% |
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 (2.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.