St. Clairsville, OH Weather & Growing Conditions
This Afternoon
82°F
Mostly Sunny
Mostly sunny, with a high near 82. South wind around 2 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 82°F | Mostly Sunny | 2 mph S | 9% |
| Tonight | 65°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 1 to 7 mph S | 73% |
| Sunday | 80°F | Showers And Thunderstorms | 5 to 8 mph SW | 82% |
| Sunday Night | 56°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 9 mph N | 59% |
| Monday | 69°F | Chance Rain Showers | 10 mph NE | 47% |
| Monday Night | 55°F | Rain Showers Likely | 9 mph NE | 58% |
| Tuesday | 66°F | Rain Showers Likely | 12 mph NE | 64% |
| Tuesday Night | 53°F | Showers And Thunderstorms | 13 mph E | 84% |
| Wednesday | 66°F | Showers And Thunderstorms | 13 mph E | 84% |
| Wednesday Night | 52°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 70% |
| Thursday | 67°F | Showers And Thunderstorms Likely | 10 mph E | 62% |
| Thursday Night | 51°F | Slight Chance Rain Showers then Mostly Cloudy | 8 mph NE | 15% |
| Friday | 69°F | Slight Chance Rain Showers | 7 mph NE | 16% |
| Friday Night | 50°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for St. Clairsville, OH
Last spring frost
Apr 20
First fall frost
Oct 29
Growing season
192 days
Hardiness zone
6b
Explore more for St. Clairsville, OH: full frost dates · planting calendar · Ohio frost dates
Climate data from the nearest NOAA station, Wheeling, Wv (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.