St. Clairsville, OH Weather & Growing Conditions
Tonight
58°F
Mostly Clear
Mostly clear, with a low around 58. Northeast wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Mostly Clear | 6 mph NE | 6% |
| Saturday | 81°F | Mostly Sunny | 5 mph E | 12% |
| Saturday Night | 66°F | Mostly Cloudy then Chance Showers And Thunderstorms | 2 to 8 mph S | 61% |
| Sunday | 79°F | Showers And Thunderstorms | 6 to 9 mph SW | 93% |
| Sunday Night | 61°F | Showers And Thunderstorms | 9 mph N | 93% |
| Monday | 70°F | Chance Rain Showers | 10 mph NE | 46% |
| Monday Night | 59°F | Chance Showers And Thunderstorms | 12 mph NE | 58% |
| Tuesday | 69°F | Showers And Thunderstorms Likely | 13 mph NE | 64% |
| Tuesday Night | 57°F | Showers And Thunderstorms Likely | 13 to 16 mph E | 72% |
| Wednesday | 66°F | Showers And Thunderstorms Likely | 14 mph E | 72% |
| Wednesday Night | 54°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 63% |
| Thursday | 67°F | Chance Rain Showers | 10 mph E | 40% |
| Thursday Night | 53°F | Chance Rain Showers then Mostly Cloudy | 7 mph NE | 30% |
| Friday | 69°F | Slight Chance Rain Showers | 8 mph N | 18% |
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 Sep 19, 2026.