Seneca, PA Weather & Growing Conditions
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 5 mph NE | 9% |
| Saturday | 72°F | Partly Sunny then Slight Chance Rain Showers | 5 mph SE | 15% |
| Saturday Night | 60°F | Mostly Cloudy then Showers And Thunderstorms | 2 to 6 mph SE | 84% |
| Sunday | 72°F | Showers And Thunderstorms | 6 mph SW | 92% |
| Sunday Night | 53°F | Rain Showers Likely | 8 mph NE | 62% |
| Monday | 66°F | Slight Chance Rain Showers | 8 mph NE | 24% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph E | 53% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph E | 53% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 62% |
| Wednesday | 60°F | Rain Showers Likely | 9 to 13 mph E | 62% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 12 mph E | 53% |
| Thursday | 62°F | Chance Rain Showers | 6 to 9 mph E | 46% |
| Thursday Night | 49°F | Chance Rain Showers | 6 mph E | 26% |
| Friday | 68°F | Partly Sunny then Slight Chance Rain Showers | 6 mph NE | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seneca, PA
Last spring frost
May 2
First fall frost
Oct 23
Growing season
171 days
Hardiness zone
6a
Explore more for Seneca, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Franklin, Pa (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.