Thomaston, ME Weather & Growing Conditions
Today
73°F
Sunny
Sunny, with a high near 73. Southwest wind 15 to 20 mph, with gusts as high as 30 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Sunny | 15 to 20 mph SW | 0% |
| Tonight | 61°F | Mostly Clear | 5 to 15 mph SW | 0% |
| Wednesday | 72°F | Mostly Sunny | 5 to 10 mph SW | 0% |
| Wednesday Night | 62°F | Mostly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 74°F | Mostly Sunny | 0 to 10 mph SW | 4% |
| Thursday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 6% |
| Friday | 76°F | Mostly Sunny | 0 to 10 mph SW | 10% |
| Friday Night | 66°F | Slight Chance Rain Showers | 0 to 5 mph W | 20% |
| Saturday | 74°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 21% |
| Saturday Night | 64°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 0 to 5 mph SW | 20% |
| Sunday | 74°F | Mostly Sunny | 0 to 10 mph SW | 5% |
| Sunday Night | 65°F | Partly Cloudy | 5 mph SW | 5% |
| Monday | 76°F | Mostly Sunny | 5 to 15 mph SW | 9% |
| Monday Night | 64°F | Slight Chance Rain Showers | 5 to 10 mph W | 18% |
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 Aug 4, 2026.