St. Clairsville, PA Weather & Growing Conditions
Tonight
60°F
Rain Showers Likely
Rain showers likely. Mostly cloudy, with a low around 60. Southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Rain Showers Likely | 6 mph SE | 66% |
| Sunday | 77°F | Rain Showers | 7 mph SW | 93% |
| Sunday Night | 52°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 73% |
| Monday | 66°F | Chance Rain Showers | 8 mph NE | 43% |
| Monday Night | 50°F | Rain Showers Likely | 6 mph E | 74% |
| Tuesday | 59°F | Showers And Thunderstorms | 8 mph E | 77% |
| Tuesday Night | 48°F | Rain Showers Likely | 8 to 12 mph E | 68% |
| Wednesday | 55°F | Rain Showers Likely | 10 mph E | 63% |
| Wednesday Night | 47°F | Chance Rain Showers | 7 to 10 mph E | 36% |
| Thursday | 59°F | Chance Rain Showers | 7 mph E | 35% |
| Thursday Night | 46°F | Chance Rain Showers | 6 mph NE | 25% |
| Friday | 64°F | Chance Rain Showers | 6 mph N | 25% |
| Friday Night | 47°F | Slight Chance Rain Showers | 7 mph N | 19% |
| Saturday | 67°F | Slight Chance Rain Showers | 8 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Clairsville, PA
Last spring frost
Apr 29
First fall frost
Oct 13
Growing season
167 days
Hardiness zone
6b
Explore more for St. Clairsville, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Wolfsburg, Pa (9.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.