Seneca, PA Weather & Growing Conditions
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 6 mph NE | 8% |
| Saturday | 72°F | Partly Sunny then Slight Chance Rain Showers | 6 mph SE | 16% |
| Saturday Night | 61°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph SE | 85% |
| Sunday | 72°F | Showers And Thunderstorms | 7 mph SW | 91% |
| Sunday Night | 53°F | Rain Showers Likely | 9 mph NE | 61% |
| Monday | 66°F | Chance Rain Showers | 9 mph NE | 25% |
| Monday Night | 52°F | Chance Rain Showers | 8 to 12 mph E | 53% |
| Tuesday | 63°F | Chance Rain Showers | 12 mph E | 53% |
| Tuesday Night | 50°F | Showers And Thunderstorms Likely | 14 mph E | 62% |
| Wednesday | 60°F | Rain Showers Likely | 10 to 14 mph E | 62% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 13 mph E | 54% |
| Thursday | 62°F | Chance Rain Showers | 6 to 10 mph E | 47% |
| Thursday Night | 50°F | Chance Rain Showers | 6 mph E | 27% |
| Friday | 69°F | Partly Sunny then Slight Chance Rain Showers | 6 mph NE | 18% |
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 (8.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.