Marshallton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Marshallton, a community in Northumberland County, Pennsylvania.
Today
82°F
Sunny
Sunny, with a high near 82. Northeast wind around 1 mph.
7-day forecast for Marshallton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 1 mph NE | 0% |
| Tonight | 63°F | Mostly Cloudy | 1 mph SE | 3% |
| Wednesday | 80°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 3 mph SE | 49% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 3 mph SE | 53% |
| Thursday | 85°F | Patchy Fog then Showers And Thunderstorms | 1 to 5 mph S | 82% |
| Thursday Night | 68°F | Showers And Thunderstorms | 2 mph S | 82% |
| Friday | 84°F | Showers And Thunderstorms Likely | 0 to 3 mph SW | 74% |
| Friday Night | 67°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph SW | 74% |
| Saturday | 82°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 54% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 2 mph SW | 54% |
| Sunday | 85°F | Mostly Sunny | 3 mph W | 11% |
| Sunday Night | 68°F | Mostly Clear | 2 mph SW | 11% |
| Monday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 6 mph W | 24% |
| Monday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 mph W | 24% |
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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Snydertown
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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 Aug 4, 2026.