New Britain, CT Weather & Growing Conditions
Today
74°F
Sunny
Sunny. High near 74, with temperatures falling to around 66 in the afternoon. Southwest wind 3 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Sunny | 3 to 10 mph SW | 2% |
| Tonight | 56°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Thursday | 71°F | Patchy Fog then Slight Chance Light Rain | 6 to 12 mph S | 18% |
| Thursday Night | 61°F | Light Rain Likely | 3 to 9 mph S | 67% |
| Friday | 69°F | Light Rain | 3 mph S | 85% |
| Friday Night | 54°F | Light Rain | 3 mph E | 83% |
| Saturday | 64°F | Slight Chance Light Rain | 7 mph NW | 24% |
| Saturday Night | 44°F | Chance Light Rain | 8 mph NW | 25% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 9 mph NW | 17% |
| Sunday Night | 38°F | Partly Cloudy | 7 mph W | 6% |
| Monday | 55°F | Sunny | 7 to 14 mph W | 14% |
| Monday Night | 36°F | Partly Cloudy | 5 to 8 mph W | 12% |
| Tuesday | 58°F | Mostly Sunny | 8 to 12 mph SW | 5% |
| Tuesday Night | 36°F | Mostly Clear | 5 to 8 mph W | 2% |
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 Nov 4, 2026.