Winthrop, ME Weather & Growing Conditions
This Afternoon
65°F
Sunny
Sunny, with a high near 65. Northwest wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Sunny | 0 mph | 0% |
| Tonight | 43°F | Partly Cloudy | 0 mph | 0% |
| Sunday | 59°F | Mostly Cloudy then Light Rain Likely | 0 to 10 mph S | 72% |
| Sunday Night | 43°F | Light Rain Likely | 0 to 5 mph E | 67% |
| Monday | 64°F | Patchy Fog then Mostly Sunny | 5 to 10 mph N | 0% |
| Monday Night | 40°F | Partly Cloudy | 5 mph N | 0% |
| Tuesday | 62°F | Mostly Sunny | 5 mph N | 0% |
| Tuesday Night | 41°F | Mostly Clear | 0 to 5 mph N | 0% |
| Wednesday | 64°F | Sunny | 0 to 5 mph NE | 0% |
| Wednesday Night | 40°F | Mostly Clear | 0 to 5 mph NE | 0% |
| Thursday | 65°F | Mostly Sunny | 0 to 5 mph NE | 10% |
| Thursday Night | 43°F | Slight Chance Rain Showers | 0 to 10 mph NE | 18% |
| Friday | 63°F | Chance Rain Showers | 10 mph N | 33% |
| Friday Night | 45°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
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 (9.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.