New Britain, CT Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Britain, a city in Hartford County, Connecticut.
This Afternoon
70°F
Mostly Cloudy
Mostly cloudy. High near 70, with temperatures falling to around 63 in the afternoon. Southwest wind around 7 mph.
7-day forecast for New Britain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Mostly Cloudy | 7 mph SW | 2% |
| Tonight | 50°F | Partly Cloudy | 6 mph S | 3% |
| Wednesday | 74°F | Sunny | 3 to 10 mph S | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 7 mph S | 1% |
| Thursday | 72°F | Chance Light Rain | 5 to 12 mph S | 40% |
| Thursday Night | 62°F | Light Rain Likely | 5 to 9 mph S | 74% |
| Friday | 69°F | Rain | 6 mph S | 83% |
| Friday Night | 55°F | Rain | 6 mph NW | 82% |
| Saturday | 65°F | Light Rain Likely | 8 mph NW | 56% |
| Saturday Night | 43°F | Chance Light Rain | 7 mph NW | 29% |
| Sunday | 60°F | Slight Chance Light Rain then Mostly Sunny | 6 to 9 mph W | 19% |
| Sunday Night | 38°F | Partly Cloudy | 6 mph W | 8% |
| Monday | 58°F | Slight Chance Light Rain | 6 to 14 mph NW | 20% |
| Monday Night | 37°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 19% |
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
Nearby towns & communities
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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 Nov 3, 2026.