Darien Downtown, CT Weather & Growing Conditions
Today
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 67 in the afternoon. East wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 69°F | Partly Sunny | 10 mph E | 0% |
| Tonight | 56°F | Mostly Cloudy | 7 mph SE | 2% |
| Sunday | 69°F | Rain | 9 mph SE | 92% |
| Sunday Night | 55°F | Rain | 6 to 13 mph SE | 92% |
| Monday | 68°F | Chance Light Rain then Mostly Cloudy | 8 to 13 mph NE | 29% |
| Monday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 8 to 12 mph NE | 20% |
| Tuesday | 64°F | Chance Rain Showers | 12 to 15 mph NE | 25% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 13 to 16 mph NE | 23% |
| Wednesday | 65°F | Slight Chance Rain Showers | 18 mph NE | 18% |
| Wednesday Night | 50°F | Chance Rain Showers | 20 mph NE | 31% |
| Thursday | 64°F | Chance Rain Showers | 20 mph NE | 31% |
| Thursday Night | 50°F | Chance Rain Showers | 18 mph NE | 39% |
| Friday | 65°F | Chance Rain Showers | 17 mph N | 38% |
| Friday Night | 51°F | Chance Rain Showers | 17 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Darien Downtown, CT
Last spring frost
Apr 17
First fall frost
Oct 23
Growing season
188 days
Hardiness zone
7a
Explore more for Darien Downtown, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Stamford 5 N, Ct (4.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.