Winthrop, ME Weather & Growing Conditions
Today
83°F
Sunny
Sunny, with a high near 83. West wind 10 to 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 10 to 15 mph W | 0% |
| Tonight | 60°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 85°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph S | 3% |
| Thursday | 88°F | Mostly Sunny | 0 to 5 mph S | 8% |
| Thursday Night | 68°F | Partly Cloudy | 0 to 5 mph S | 7% |
| Friday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 26% |
| Friday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 26% |
| Saturday | 86°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 40% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 36% |
| Sunday | 87°F | Sunny | 0 to 5 mph W | 5% |
| Sunday Night | 66°F | Mostly Clear | 0 to 5 mph SW | 9% |
| Monday | 86°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 10 mph W | 15% |
| Monday Night | 64°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph W | 18% |
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 Aug 4, 2026.