St. Clairsville, OH Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for St. Clairsville, a city in Belmont County, Ohio.

Today

72°F

Light Rain Likely

Rain likely after 11am. Mostly cloudy, with a high near 72. South wind around 12 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast for St. Clairsville

When	Temp	Forecast	Wind	Precip
Today	72°F	Light Rain Likely	12 mph S	72%
Tonight	58°F	Light Rain	9 to 14 mph S	85%
Thursday	68°F	Mostly Sunny	7 to 13 mph SW	14%
Thursday Night	46°F	Partly Cloudy	6 mph SW	1%
Friday	62°F	Partly Sunny then Chance Light Rain	3 to 8 mph W	25%
Friday Night	40°F	Chance Light Rain	9 mph W	25%
Saturday	52°F	Chance Light Rain	12 mph W	25%
Saturday Night	35°F	Chance Light Rain then Mostly Cloudy	5 to 8 mph W	25%
Sunday	55°F	Mostly Sunny	6 to 12 mph W	5%
Sunday Night	33°F	Mostly Clear	9 mph W	5%
Monday	56°F	Sunny	7 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%
Tuesday Night	35°F	Partly Cloudy	3 to 7 mph W	2%

Forecast source: National Weather Service (api.weather.gov) for St. Clairsville (40.078, -80.899). Updated through the day.

Growing snapshot for St. Clairsville

Last spring frost

Apr 20

First fall frost

Oct 29

Growing season

192 days

Hardiness zone

More local growing data for St. Clairsville: nearby ZIP 43950 weather · frost dates · planting calendar · Ohio frost dates

Nearby towns & communities

Bannock Barnesville Belmont Bethesda Blaine Bridgeport Brookside Flushing Glencoe Holloway Lafferty Lansing Lloydsville Martins Ferry Morristown Neffs Powhatan Point Wolfhurst

All Ohio locations ›

Climate data from the nearest NOAA station, Wheeling, Wv (10.7 mi from St. Clairsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.