Thomaston, ME Weather & Growing Conditions
This Afternoon
56°F
Isolated Rain Showers
Isolated rain showers. Cloudy, with a high near 56. East wind around 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 56°F | Isolated Rain Showers | 10 mph E | 19% |
| Tonight | 51°F | Scattered Rain Showers | 0 to 5 mph SE | 29% |
| Wednesday | 60°F | Partly Sunny | 5 to 10 mph SW | 7% |
| Wednesday Night | 54°F | Partly Cloudy | 5 to 10 mph SW | 4% |
| Thursday | 60°F | Mostly Cloudy then Isolated Rain Showers | 10 to 15 mph SW | 20% |
| Thursday Night | 56°F | Mostly Cloudy then Isolated Rain Showers | 10 to 15 mph SW | 24% |
| Friday | 60°F | Light Rain Likely | 5 to 10 mph S | 72% |
| Friday Night | 52°F | Light Rain | 5 to 10 mph E | 87% |
| Saturday | 56°F | Light Rain | 10 mph SE | 85% |
| Saturday Night | 47°F | Light Rain Likely | 5 to 10 mph NW | 67% |
| Sunday | 55°F | Chance Light Rain | 5 to 10 mph NW | 42% |
| Sunday Night | 43°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 20% |
| Monday | 52°F | Slight Chance Light Rain | 10 mph NW | 22% |
| Monday Night | 41°F | Slight Chance Light Rain | 10 mph NW | 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
6b
Explore more for Thomaston, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Tenants Harbor, Me (3.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.