Grantsville, WV Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grantsville, a town in Calhoun County, West Virginia.
Tonight
67°F
Showers And Thunderstorms then Chance Showers And Thunderstorms
Rain showers likely before 8pm, then showers and thunderstorms between 8pm and 10pm, then a chance of showers and thunderstorms between 10pm and 2am, then patchy fog and a slight chance of showers and thunderstorms between 2am and 3am, then patchy fog and a chance of showers and thunderstorms between 3am and 5am, then patchy fog and showers and thunderstorms likely. Mostly cloudy, with a low around 67. South wind 0 to 5 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Grantsville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 67°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 0 to 5 mph S | 97% |
| Sunday | 85°F | Patchy Fog | 6 mph SW | 49% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms | 2 mph NE | 50% |
| Monday | 78°F | Patchy Fog | 5 mph N | 42% |
| Monday Night | 61°F | Showers And Thunderstorms Likely | 1 to 5 mph N | 71% |
| Tuesday | 76°F | Showers And Thunderstorms | 3 mph NE | 79% |
| Tuesday Night | 59°F | Showers And Thunderstorms | 5 mph E | 83% |
| Wednesday | 73°F | Showers And Thunderstorms | 6 mph E | 79% |
| Wednesday Night | 56°F | Showers And Thunderstorms Likely | 3 to 8 mph E | 68% |
| Thursday | 70°F | Rain Showers Likely | 5 mph E | 56% |
| Thursday Night | 54°F | Chance Rain Showers then Mostly Cloudy | 5 mph NE | 26% |
| Friday | 72°F | Mostly Sunny | 2 to 6 mph N | 10% |
| Friday Night | 51°F | Partly Cloudy | 5 mph N | 10% |
| Saturday | 73°F | Mostly Sunny | 2 to 6 mph N | 6% |
Forecast source: National Weather Service (api.weather.gov) for Grantsville (38.921, -81.093). Updated through the day.
Growing snapshot for Grantsville
Last spring frost
Apr 26
First fall frost
Oct 20
Growing season
175 days
Hardiness zone
6b
More local growing data for Grantsville: nearby ZIP 26147 weather · frost dates · planting calendar · West Virginia frost dates
Climate data from the nearest NOAA station, Grantsville 1Ese, Wv (0.5 mi from Grantsville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.