Mamanasco Lake, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mamanasco Lake, a community in Fairfield County, Connecticut.
This Afternoon
77°F
Sunny
Sunny. High near 77, with temperatures falling to around 74 in the afternoon. North wind around 8 mph.
7-day forecast for Mamanasco Lake
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 77°F | Sunny | 8 mph N | 0% |
| Tonight | 51°F | Partly Cloudy | 3 to 7 mph N | 0% |
| Saturday | 68°F | Mostly Sunny | 7 mph E | 0% |
| Saturday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph SE | 16% |
| Sunday | 65°F | Showers And Thunderstorms | 5 to 10 mph SE | 92% |
| Sunday Night | 55°F | Showers And Thunderstorms | 3 to 10 mph E | 92% |
| Monday | 65°F | Chance Rain Showers | 8 to 12 mph N | 36% |
| Monday Night | 50°F | Slight Chance Rain Showers | 6 to 10 mph NE | 24% |
| Tuesday | 61°F | Chance Rain Showers | 12 mph NE | 25% |
| Tuesday Night | 48°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 13 mph NE | 20% |
| Wednesday | 61°F | Partly Sunny then Slight Chance Rain Showers | 10 to 14 mph NE | 15% |
| Wednesday Night | 48°F | Chance Rain Showers | 10 to 14 mph NE | 28% |
| Thursday | 61°F | Chance Rain Showers | 10 to 14 mph NE | 28% |
| Thursday Night | 49°F | Chance Rain Showers | 13 mph NE | 35% |
Forecast source: National Weather Service (api.weather.gov) for Mamanasco Lake (41.318, -73.530). Updated through the day.
Growing snapshot for Mamanasco Lake
Last spring frost
May 1
First fall frost
Oct 14
Growing season
166 days
Hardiness zone
6b
More local growing data for Mamanasco Lake: nearby ZIP 06877 weather · frost dates · planting calendar · Connecticut frost dates
Nearby towns & communities
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Bigelow Corners
Bogus Hill
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Branchville
Bridgeport
Brookfield Center
Candlewood Isle
Candlewood Knolls
Candlewood Lake Club
Candlewood Orchards
Candlewood Shores
Cannondale
Chimney Point
Coleytown
Compo
Cos Cob
Danbury
Daniels Farm
Darien Downtown
Dodgingtown
East Village
Fairfield University
Georgetown
Greens Farms
Greenwich
Hawleyville
Indian Field
Inglenook
Climate data from the nearest NOAA station, Danbury Muni Ap, Ct (3.8 mi from Mamanasco Lake). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.