Casco, ME Weather & Growing Conditions
Tonight
43°F
Mostly Clear
Mostly clear, with a low around 43. North wind 5 to 10 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Mostly Clear | 5 to 10 mph N | 0% |
| Saturday | 64°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 43°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 60°F | Rain Showers Likely | 0 to 10 mph S | 58% |
| Sunday Night | 44°F | Rain Showers Likely | 0 to 5 mph NE | 55% |
| Monday | 65°F | Mostly Sunny | 5 to 10 mph N | 3% |
| Monday Night | 42°F | Partly Cloudy | 5 mph N | 1% |
| Tuesday | 62°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 41°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Wednesday | 62°F | Mostly Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 41°F | Partly Cloudy | 0 to 5 mph NE | 5% |
| Thursday | 62°F | Partly Sunny then Slight Chance Rain Showers | 5 mph NE | 23% |
| Thursday Night | 43°F | Slight Chance Rain Showers | 5 mph NE | 23% |
| Friday | 64°F | Chance Rain Showers | 5 to 10 mph N | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Casco, ME
Last spring frost
Apr 30
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
5b
Explore more for Casco, ME: full frost dates · planting calendar · Maine frost dates
Climate data from the nearest NOAA station, Windham 2Nw, Me (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.