New Berlin, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for New Berlin, a borough in Union County, Pennsylvania.
Today
74°F
Mostly Sunny
Mostly sunny, with a high near 74. South wind 2 to 9 mph.
7-day forecast for New Berlin
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Sunny | 2 to 9 mph S | 1% |
| Tonight | 59°F | Mostly Cloudy then Light Rain | 8 mph S | 83% |
| Thursday | 73°F | Light Rain | 3 to 9 mph S | 88% |
| Thursday Night | 51°F | Chance Light Rain then Mostly Cloudy | 2 mph SW | 29% |
| Friday | 68°F | Slight Chance Light Rain | 1 mph NW | 15% |
| Friday Night | 45°F | Partly Cloudy | 0 to 3 mph NW | 12% |
| Saturday | 59°F | Slight Chance Light Rain | 3 to 9 mph W | 24% |
| Saturday Night | 39°F | Slight Chance Light Rain | 8 mph W | 23% |
| Sunday | 58°F | Mostly Sunny | 5 to 8 mph W | 6% |
| Sunday Night | 36°F | Partly Cloudy | 6 mph W | 6% |
| Monday | 58°F | Mostly Sunny | 6 to 10 mph W | 9% |
| Monday Night | 35°F | Partly Cloudy | 2 to 6 mph W | 9% |
| Tuesday | 63°F | Mostly Sunny | 3 to 9 mph SW | 3% |
| Tuesday Night | 35°F | Mostly Clear | 5 mph W | 0% |
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 Nov 4, 2026.