New Britain, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Britain, a city in Hartford County, Connecticut.
Today
68°F
Mostly Sunny
Mostly sunny, with a high near 68. Northeast wind 2 to 6 mph.
7-day forecast for New Britain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 68°F | Mostly Sunny | 2 to 6 mph NE | 0% |
| Tonight | 51°F | Mostly Cloudy | 3 mph SE | 1% |
| Sunday | 64°F | Rain Showers | 2 to 7 mph SE | 87% |
| Sunday Night | 53°F | Rain Showers | 5 to 13 mph E | 80% |
| Monday | 66°F | Partly Sunny | 7 to 13 mph N | 11% |
| Monday Night | 47°F | Mostly Cloudy | 3 to 8 mph N | 3% |
| Tuesday | 62°F | Mostly Cloudy | 10 mph NE | 5% |
| Tuesday Night | 46°F | Mostly Cloudy | 6 to 12 mph NE | 4% |
| Wednesday | 64°F | Partly Sunny | 15 mph NE | 6% |
| Wednesday Night | 46°F | Mostly Cloudy then Chance Rain Showers | 12 to 15 mph NE | 25% |
| Thursday | 62°F | Chance Rain Showers | 17 mph NE | 32% |
| Thursday Night | 47°F | Chance Rain Showers | 16 mph N | 37% |
| Friday | 64°F | Chance Rain Showers | 17 mph N | 33% |
| Friday Night | 48°F | Chance Rain Showers | 16 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov) for New Britain (41.677, -72.786). Updated through the day.
Growing snapshot for New Britain
Last spring frost
Apr 17
First fall frost
Oct 26
Growing season
191 days
Hardiness zone
6b
More local growing data for New Britain: nearby ZIP 06053 weather · frost dates · planting calendar · Connecticut frost dates
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Climate data from the nearest NOAA station, Hartford Brainard Fld, Ct (8 mi from New Britain). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.