Casco, ME Weather & Growing Conditions
Tonight
44°F
Slight Chance Rain Showers then Mostly Cloudy
A slight chance of rain showers before 9pm. Mostly cloudy, with a low around 44. Southeast wind around 0 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Slight Chance Rain Showers then Mostly Cloudy | 0 mph | 20% |
| Wednesday | 74°F | Partly Sunny | 0 to 5 mph SW | 6% |
| Wednesday Night | 49°F | Partly Cloudy | 5 mph SW | 3% |
| Thursday | 70°F | Mostly Cloudy then Isolated Rain Showers | 5 to 10 mph SW | 23% |
| Thursday Night | 55°F | Mostly Cloudy | 0 to 10 mph SW | 10% |
| Friday | 66°F | Light Rain Likely | 0 to 5 mph S | 56% |
| Friday Night | 49°F | Light Rain | 5 mph NE | 84% |
| Saturday | 58°F | Light Rain | 5 to 10 mph N | 77% |
| Saturday Night | 41°F | Light Rain Likely | 5 mph NW | 55% |
| Sunday | 56°F | Chance Light Rain | 5 to 10 mph W | 39% |
| Sunday Night | 34°F | Slight Chance Light Rain then Mostly Cloudy | 5 mph W | 15% |
| Monday | 53°F | Mostly Sunny then Slight Chance Light Rain | 5 to 10 mph NW | 21% |
| Monday Night | 32°F | Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Tuesday | 52°F | Slight Chance Light Rain then Mostly Sunny | 5 to 10 mph W | 17% |
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 Nov 4, 2026.