Winthrop, ME Weather & Growing Conditions
Tonight
46°F
Chance Rain Showers
A chance of rain showers before 1am. Cloudy, with a low around 46. Southeast wind around 0 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Chance Rain Showers | 0 mph | 34% |
| Wednesday | 72°F | Mostly Sunny | 0 to 5 mph S | 8% |
| Wednesday Night | 49°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 70°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 17% |
| Thursday Night | 56°F | Mostly Cloudy | 0 to 5 mph SW | 10% |
| Friday | 67°F | Chance Light Rain | 0 mph | 52% |
| Friday Night | 50°F | Light Rain | 5 to 10 mph NE | 86% |
| Saturday | 58°F | Light Rain | 5 to 10 mph N | 81% |
| Saturday Night | 42°F | Light Rain Likely | 5 mph N | 59% |
| Sunday | 56°F | Chance Light Rain | 5 to 10 mph NW | 47% |
| Sunday Night | 35°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 17% |
| Monday | 53°F | Partly Sunny then Slight Chance Light Rain | 5 to 10 mph W | 18% |
| Monday Night | 33°F | Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Tuesday | 52°F | Slight Chance Light Rain then Mostly Sunny | 10 mph W | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Winthrop, ME
Last spring frost
Apr 27
First fall frost
Oct 16
Growing season
172 days
Hardiness zone
5b
Explore more for Winthrop, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Augusta State Ap, Me (8.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.