Marshallton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marshallton, a community in Northumberland County, Pennsylvania.
Overnight
49°F
Mostly Clear
Mostly clear, with a low around 49. South wind around 3 mph.
7-day forecast for Marshallton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 49°F | Mostly Clear | 3 mph S | 0% |
| Wednesday | 70°F | Mostly Sunny | 2 to 7 mph S | 1% |
| Wednesday Night | 58°F | Mostly Cloudy then Light Rain Likely | 7 mph S | 63% |
| Thursday | 69°F | Light Rain | 3 to 8 mph S | 93% |
| Thursday Night | 53°F | Chance Light Rain | 0 to 3 mph SW | 39% |
| Friday | 65°F | Slight Chance Light Rain | 2 mph NW | 18% |
| Friday Night | 44°F | Slight Chance Light Rain then Partly Cloudy | 1 mph NW | 16% |
| Saturday | 58°F | Slight Chance Light Rain | 2 to 6 mph W | 22% |
| Saturday Night | 39°F | Slight Chance Light Rain | 6 mph W | 22% |
| Sunday | 56°F | Mostly Sunny | 7 mph NW | 5% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph W | 6% |
| Monday | 56°F | Mostly Sunny | 5 to 8 mph W | 8% |
| Monday Night | 34°F | Partly Cloudy | 5 mph W | 7% |
| Tuesday | 59°F | Mostly Sunny | 3 to 7 mph SW | 2% |
Forecast source: National Weather Service (api.weather.gov) for Marshallton (40.785, -76.536). Updated through the day.
Growing snapshot for Marshallton
Last spring frost
Apr 27
First fall frost
Oct 20
Growing season
172 days
Hardiness zone
6b
More local growing data for Marshallton: nearby ZIP 17866 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Montandon
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Northumberland
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Climate data from the nearest NOAA station, Bear Gap, Pa (6.2 mi from Marshallton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.