New Britain, CT Weather & Growing Conditions
Overnight
50°F
Partly Cloudy
Partly cloudy, with a low around 50. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Partly Cloudy | 5 mph SW | 3% |
| Wednesday | 74°F | Sunny | 5 to 10 mph SW | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 5 to 8 mph S | 1% |
| Thursday | 71°F | Chance Light Rain | 6 to 12 mph S | 41% |
| Thursday Night | 62°F | Light Rain Likely | 5 to 9 mph S | 74% |
| Friday | 68°F | Rain | 5 mph S | 83% |
| Friday Night | 55°F | Rain | 6 mph NW | 82% |
| Saturday | 64°F | Light Rain Likely | 8 mph NW | 55% |
| Saturday Night | 43°F | Chance Light Rain | 7 mph NW | 28% |
| Sunday | 59°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 | 57°F | Slight Chance Light Rain | 7 to 14 mph NW | 20% |
| Monday Night | 37°F | Slight Chance Light Rain then Partly Cloudy | 9 mph W | 19% |
| Tuesday | 58°F | Sunny | 10 to 14 mph SW | 8% |
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 (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.