Hellertown, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hellertown, a borough in Northampton County, Pennsylvania.
This Afternoon
74°F
Mostly Sunny
Mostly sunny, with a high near 74. South wind around 5 mph.
7-day forecast for Hellertown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 74°F | Mostly Sunny | 5 mph S | 0% |
| Tonight | 58°F | Mostly Cloudy | 5 mph S | 8% |
| Thursday | 70°F | Light Rain | 5 to 10 mph S | 90% |
| Thursday Night | 59°F | Light Rain Likely | 0 to 5 mph SW | 67% |
| Friday | 69°F | Chance Light Rain | 0 mph | 30% |
| Friday Night | 48°F | Slight Chance Light Rain then Partly Cloudy | 0 mph | 24% |
| Saturday | 63°F | Mostly Sunny | 0 to 10 mph W | 14% |
| Saturday Night | 42°F | Partly Cloudy then Slight Chance Light Rain | 5 to 10 mph NW | 16% |
| Sunday | 59°F | Slight Chance Light Rain then Mostly Sunny | 5 to 15 mph W | 16% |
| Sunday Night | 39°F | Mostly Clear | 5 to 10 mph W | 0% |
| Monday | 59°F | Sunny | 5 to 15 mph W | 1% |
| Monday Night | 37°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 63°F | Sunny | 5 to 10 mph W | 1% |
| Tuesday Night | 36°F | Mostly Clear | 0 to 5 mph W | 1% |
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 Nov 5, 2026.