Winthrop, ME Weather & Growing Conditions
Today
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 64 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 73°F | Mostly Sunny | 0 to 5 mph SW | 4% |
| Tonight | 49°F | Partly Cloudy | 0 to 5 mph S | 3% |
| Thursday | 71°F | Mostly Cloudy then Chance Light Rain | 5 to 15 mph S | 41% |
| Thursday Night | 56°F | Mostly Cloudy then Chance Light Rain | 0 to 10 mph SW | 28% |
| Friday | 69°F | Chance Light Rain | 0 mph | 43% |
| Friday Night | 50°F | Light Rain | 0 to 10 mph NE | 89% |
| Saturday | 59°F | Light Rain | 5 to 10 mph NE | 81% |
| Saturday Night | 43°F | Chance Light Rain | 5 to 10 mph N | 48% |
| Sunday | 54°F | Chance Light Rain | 5 to 10 mph NW | 42% |
| Sunday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph W | 16% |
| Monday | 51°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Monday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 5 mph W | 17% |
| Tuesday | 52°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Tuesday Night | 31°F | Partly Cloudy | 5 mph W | 11% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winthrop, ME
Last spring frost
May 1
First fall frost
Oct 11
Growing season
163 days
Hardiness zone
5b
Explore more for Winthrop, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Gardiner, Me (11.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.