Clarksville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarksville, a borough in Greene County, Pennsylvania.
Overnight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 2 mph.
7-day forecast for Clarksville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Mostly Clear | 2 mph S | 1% |
| Wednesday | 78°F | Mostly Cloudy then Slight Chance Light Rain | 2 to 9 mph S | 22% |
| Wednesday Night | 60°F | Light Rain | 9 mph S | 98% |
| Thursday | 70°F | Chance Light Rain then Partly Sunny | 7 to 12 mph SW | 41% |
| Thursday Night | 47°F | Partly Cloudy | 1 to 6 mph SW | 2% |
| Friday | 64°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph SW | 17% |
| Friday Night | 40°F | Chance Light Rain | 2 to 7 mph W | 32% |
| Saturday | 56°F | Chance Light Rain | 6 to 10 mph W | 32% |
| Saturday Night | 36°F | Chance Light Rain then Partly Cloudy | 2 to 7 mph W | 26% |
| Sunday | 56°F | Partly Sunny | 2 to 10 mph SW | 14% |
| Sunday Night | 34°F | Slight Chance Light Rain | 8 mph SW | 24% |
| Monday | 57°F | Chance Light Rain | 7 to 14 mph W | 28% |
| Monday Night | 35°F | Chance Light Rain then Partly Cloudy | 7 to 12 mph SW | 28% |
| Tuesday | 60°F | Mostly Sunny | 12 to 16 mph SW | 9% |
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 Nov 4, 2026.