Topsham, ME Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Topsham, a community in Sagadahoc County, Maine.
Today
85°F
Sunny
Sunny, with a high near 85. West wind 5 to 10 mph.
7-day forecast for Topsham
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Sunny | 5 to 10 mph W | 0% |
| Tonight | 59°F | Mostly Clear | 0 to 10 mph SW | 0% |
| Wednesday | 84°F | Mostly Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 87°F | Sunny | 0 to 10 mph SW | 6% |
| Thursday Night | 68°F | Partly Cloudy | 0 to 5 mph S | 5% |
| Friday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 23% |
| Friday Night | 69°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph W | 23% |
| Saturday | 86°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 10 mph W | 42% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph W | 37% |
| Sunday | 87°F | Mostly Sunny | 0 to 10 mph W | 6% |
| Sunday Night | 67°F | Mostly Clear | 0 to 10 mph SW | 7% |
| Monday | 88°F | Mostly Sunny | 0 to 10 mph SW | 11% |
| Monday Night | 66°F | Slight Chance Rain Showers | 0 to 10 mph W | 15% |
Forecast source: National Weather Service (api.weather.gov) for Topsham (43.947, -69.932). Updated through the day.
Growing snapshot for Topsham
Last spring frost
May 2
First fall frost
Oct 10
Growing season
160 days
Hardiness zone
5b
More local growing data for Topsham: nearby ZIP 04086 weather · frost dates · planting calendar · Maine frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Brunswick Nas, Me (4.6 mi from Topsham). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.