Winthrop, ME Weather & Growing Conditions
Today
72°F
Mostly Sunny
Mostly sunny. High near 72, with temperatures falling to around 64 in the afternoon. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Mostly Sunny | 0 to 5 mph SW | 5% |
| Tonight | 48°F | Partly Cloudy | 0 to 5 mph S | 3% |
| Thursday | 70°F | Mostly Cloudy then Chance Light Rain | 5 to 10 mph S | 42% |
| Thursday Night | 55°F | Mostly Cloudy then Chance Light Rain | 0 to 10 mph SW | 29% |
| Friday | 67°F | Chance Light Rain | 0 mph | 39% |
| Friday Night | 50°F | Light Rain | 0 to 10 mph NE | 88% |
| Saturday | 58°F | Light Rain | 5 to 10 mph NE | 80% |
| Saturday Night | 43°F | Chance Light Rain | 5 to 10 mph N | 48% |
| Sunday | 53°F | Chance Light Rain | 5 to 10 mph NW | 43% |
| Sunday Night | 35°F | Slight Chance Light Rain then Partly Cloudy | 0 to 5 mph W | 15% |
| Monday | 50°F | Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Monday Night | 33°F | Slight Chance Light Rain then Partly Cloudy | 5 to 10 mph W | 16% |
| Tuesday | 51°F | Mostly Sunny | 5 to 10 mph SW | 13% |
| Tuesday Night | 32°F | Mostly 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 11
First fall frost
Sep 29
Growing season
138 days
Hardiness zone
5b
Explore more for Winthrop, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Livermore Falls 1 E, Me (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.