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Darien Downtown, CT Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Darien Downtown, a community in Fairfield County, Connecticut.

This Afternoon
69°F
Mostly Sunny
Mostly sunny, with a high near 69. East wind around 7 mph.

7-day forecast for Darien Downtown

WhenTempForecastWindPrecip
This Afternoon 69°F Mostly Sunny 7 mph E 0%
Tonight 57°F Mostly Cloudy 7 mph SE 3%
Sunday 70°F Rain Showers then Rain 7 to 12 mph SE 91%
Sunday Night 55°F Rain then Rain Showers 6 to 12 mph NW 86%
Monday 69°F Slight Chance Rain Showers 8 to 12 mph NE 24%
Monday Night 52°F Chance Rain Showers 8 to 12 mph NE 25%
Tuesday 65°F Chance Rain Showers 13 mph NE 25%
Tuesday Night 51°F Slight Chance Rain Showers then Mostly Cloudy 15 mph NE 22%
Wednesday 66°F Mostly Cloudy 15 to 18 mph NE 7%
Wednesday Night 51°F Slight Chance Rain Showers 18 mph NE 20%
Thursday 65°F Chance Rain Showers 17 mph NE 30%
Thursday Night 51°F Chance Rain Showers 18 mph NE 36%
Friday 66°F Chance Rain Showers 15 to 18 mph N 41%
Friday Night 52°F Chance Rain Showers 17 mph N 40%

Forecast source: National Weather Service (api.weather.gov) for Darien Downtown (41.077, -73.470). Updated through the day.

Growing snapshot for Darien Downtown

Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
7a

More local growing data for Darien Downtown: nearby ZIP 06820 weather · frost dates · planting calendar · Connecticut frost dates

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Climate data from the nearest NOAA station, Stamford 5 N, Ct (4.9 mi from Darien Downtown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.