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
86°F
Sunny
Sunny, with a high near 86. East wind around 3 mph.
7-day forecast for St. Clairsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 3 mph E | 0% |
| Tonight | 67°F | Mostly Clear | 3 mph E | 1% |
| Wednesday | 86°F | Mostly Sunny then Scattered Showers And Thunderstorms | 2 to 6 mph S | 50% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 5 mph SW | 50% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 68% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely | 6 mph SW | 68% |
| Friday | 83°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 6 to 9 mph SW | 80% |
| Friday Night | 67°F | Showers And Thunderstorms | 6 mph SW | 80% |
| Saturday | 83°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 8 mph SW | 49% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 6 mph SW | 49% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph SW | 21% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 23% |
| Monday | 86°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 33% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 6 to 9 mph SW | 44% |
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
6b
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
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 Aug 4, 2026.