Clarksville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarksville, a borough in Greene County, Pennsylvania.
Today
81°F
Mostly Sunny
Mostly sunny, with a high near 81. East wind around 3 mph.
7-day forecast for Clarksville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Sunny | 3 mph E | 3% |
| Tonight | 64°F | Chance Rain Showers | 2 to 6 mph SE | 51% |
| Sunday | 79°F | Showers And Thunderstorms | 9 mph SW | 94% |
| Sunday Night | 57°F | Showers And Thunderstorms | 6 to 10 mph N | 95% |
| Monday | 68°F | Chance Rain Showers | 10 mph NE | 41% |
| Monday Night | 55°F | Showers And Thunderstorms Likely | 10 mph NE | 74% |
| Tuesday | 65°F | Showers And Thunderstorms Likely | 12 mph E | 74% |
| Tuesday Night | 51°F | Showers And Thunderstorms Likely | 13 mph E | 67% |
| Wednesday | 63°F | Rain Showers Likely | 12 mph E | 65% |
| Wednesday Night | 51°F | Showers And Thunderstorms Likely | 6 to 12 mph E | 58% |
| Thursday | 67°F | Rain Showers Likely | 6 to 9 mph E | 55% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 3 to 8 mph NE | 39% |
| Friday | 68°F | Partly Sunny then Slight Chance Rain Showers | 3 to 8 mph NE | 22% |
| Friday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 3 to 8 mph NE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Clarksville (39.974, -80.044). Updated through the day.
Growing snapshot for Clarksville
Last spring frost
May 3
First fall frost
Oct 15
Growing season
164 days
Hardiness zone
6b
More local growing data for Clarksville: nearby ZIP 15322 weather · frost dates · planting calendar · Pennsylvania frost dates
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Waynesburg
West Waynesburg
Wind Ridge
Climate data from the nearest NOAA station, Waynesburg 1 E, Pa (8.6 mi from Clarksville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.