New Britain, CT Weather & Growing Conditions
Overnight
51°F
Mostly Cloudy
Mostly cloudy, with a low around 51. East wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 51°F | Mostly Cloudy | 3 mph E | 6% |
| Sunday | 63°F | Rain Showers | 3 to 8 mph E | 94% |
| Sunday Night | 54°F | Rain Showers | 3 to 13 mph NE | 87% |
| Monday | 66°F | Partly Sunny | 7 to 13 mph N | 7% |
| Monday Night | 48°F | Mostly Cloudy | 5 to 8 mph NE | 6% |
| Tuesday | 63°F | Slight Chance Rain Showers | 9 mph NE | 16% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 to 10 mph NE | 3% |
| Wednesday | 64°F | Partly Sunny | 10 to 14 mph NE | 4% |
| Wednesday Night | 46°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 14 mph NE | 18% |
| Thursday | 63°F | Chance Rain Showers | 15 mph NE | 26% |
| Thursday Night | 47°F | Chance Rain Showers | 13 to 17 mph NE | 36% |
| Friday | 63°F | Chance Rain Showers | 15 to 18 mph N | 39% |
| Friday Night | 49°F | Chance Rain Showers | 17 mph N | 38% |
| Saturday | 66°F | Chance Rain Showers | 13 to 17 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Britain, CT
Last spring frost
Apr 17
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
6b
Explore more for New Britain, CT: full frost dates · planting calendar · Connecticut frost dates
Climate data from the nearest NOAA station, Hartford Brainard Fld, Ct (8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.