New Berlin, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Berlin, a borough in Union County, Pennsylvania.
Tonight
51°F
Partly Cloudy then Patchy Fog
Patchy fog after 2am. Partly cloudy, with a low around 51. North wind around 5 mph.
7-day forecast for New Berlin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Partly Cloudy then Patchy Fog | 5 mph N | 0% |
| Saturday | 72°F | Patchy Fog then Mostly Sunny | 2 mph E | 3% |
| Saturday Night | 60°F | Mostly Cloudy then Rain Showers | 1 to 8 mph SE | 76% |
| Sunday | 71°F | Showers And Thunderstorms | 3 to 8 mph S | 99% |
| Sunday Night | 56°F | Showers And Thunderstorms | 3 to 9 mph NW | 93% |
| Monday | 67°F | Chance Rain Showers | 5 to 9 mph N | 29% |
| Monday Night | 53°F | Chance Rain Showers | 3 to 7 mph NE | 54% |
| Tuesday | 61°F | Rain Showers Likely | 7 mph NE | 59% |
| Tuesday Night | 49°F | Rain Showers Likely | 7 mph NE | 59% |
| Wednesday | 59°F | Chance Rain Showers | 7 mph NE | 49% |
| Wednesday Night | 49°F | Chance Showers And Thunderstorms | 5 mph NE | 48% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 5 mph NE | 39% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 3 mph N | 37% |
| Friday | 67°F | Slight Chance Rain Showers then Partly Sunny | 6 mph N | 21% |
Forecast source: National Weather Service (api.weather.gov) for New Berlin (40.882, -76.981). Updated through the day.
Growing snapshot for New Berlin
Last spring frost
Apr 26
First fall frost
Oct 20
Growing season
176 days
Hardiness zone
6b
More local growing data for New Berlin: nearby ZIP 17855 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Lewisburg, Pa (6.1 mi from New Berlin). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.