New Britain, PA Weather & Growing Conditions
Tonight
49°F
Mostly Clear
Mostly clear, with a low around 49. Southwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Mostly Clear | 0 to 5 mph SW | 2% |
| Wednesday | 74°F | Patchy Fog then Sunny | 0 to 10 mph S | 2% |
| Wednesday Night | 58°F | Mostly Cloudy | 5 mph S | 5% |
| Thursday | 72°F | Chance Light Rain | 5 to 10 mph S | 52% |
| Thursday Night | 60°F | Light Rain | 0 to 5 mph SW | 75% |
| Friday | 69°F | Light Rain | 0 to 5 mph W | 75% |
| Friday Night | 50°F | Light Rain | 0 to 5 mph NW | 75% |
| Saturday | 65°F | Chance Light Rain | 5 to 10 mph NW | 35% |
| Saturday Night | 41°F | Slight Chance Light Rain then Partly Cloudy | 5 mph NW | 16% |
| Sunday | 60°F | Mostly Sunny | 5 to 10 mph W | 12% |
| Sunday Night | 39°F | Slight Chance Light Rain | 5 to 10 mph W | 19% |
| Monday | 59°F | Slight Chance Light Rain | 10 to 15 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Light Rain | 5 to 10 mph W | 23% |
| Tuesday | 61°F | Slight Chance Light Rain then Sunny | 10 to 15 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Britain, PA
Last spring frost
Apr 13
First fall frost
Oct 30
Growing season
198 days
Hardiness zone
7a
Explore more for New Britain, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Doylestown Ap, Pa (2.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.