Hellertown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hellertown, a borough in Northampton County, Pennsylvania.
Overnight
53°F
Mostly Clear
Mostly clear, with a low around 53. Northeast wind around 5 mph.
7-day forecast for Hellertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Mostly Clear | 5 mph NE | 0% |
| Saturday | 72°F | Mostly Sunny | 5 mph E | 1% |
| Saturday Night | 59°F | Mostly Cloudy then Patchy Fog | 5 mph SE | 47% |
| Sunday | 71°F | Rain Showers | 5 to 10 mph S | 91% |
| Sunday Night | 58°F | Patchy Fog | 0 to 5 mph NW | 91% |
| Monday | 66°F | Chance Rain Showers | 5 to 10 mph NE | 34% |
| Monday Night | 53°F | Chance Rain Showers | 5 to 10 mph NE | 30% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 36% |
| Tuesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Wednesday | 61°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Wednesday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 35% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 32% |
| Friday | 69°F | Slight Chance Rain Showers | 5 to 10 mph N | 21% |
Forecast source: National Weather Service (api.weather.gov) for Hellertown (40.581, -75.338). Updated through the day.
Growing snapshot for Hellertown
Last spring frost
Apr 21
First fall frost
Oct 22
Growing season
184 days
Hardiness zone
7a
More local growing data for Hellertown: nearby ZIP 18015 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Springtown 1 Nne, Pa (4.8 mi from Hellertown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.