St. Clairsville, OH Weather & Growing Conditions
Overnight
55°F
Partly Cloudy
Partly cloudy, with a low around 55. South wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Partly Cloudy | 9 mph S | 2% |
| Wednesday | 74°F | Mostly Cloudy then Light Rain | 8 to 13 mph S | 82% |
| Wednesday Night | 58°F | Light Rain | 9 to 15 mph S | 99% |
| Thursday | 67°F | Mostly Sunny | 7 to 13 mph SW | 4% |
| Thursday Night | 46°F | Partly Cloudy | 6 mph SW | 1% |
| Friday | 62°F | Partly Sunny then Chance Light Rain | 3 to 8 mph W | 26% |
| Friday Night | 40°F | Chance Light Rain | 9 mph W | 26% |
| Saturday | 52°F | Chance Light Rain | 12 mph W | 26% |
| Saturday Night | 34°F | Chance Light Rain then Mostly Cloudy | 5 to 8 mph W | 26% |
| Sunday | 55°F | Mostly Sunny | 6 to 12 mph W | 5% |
| Sunday Night | 32°F | Mostly Clear | 9 mph W | 5% |
| Monday | 56°F | Sunny | 8 to 12 mph W | 9% |
| Monday Night | 34°F | Mostly Clear | 6 to 10 mph SW | 8% |
| Tuesday | 60°F | Sunny | 9 to 13 mph SW | 3% |
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 (10.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.