Clark, PA Weather & Growing Conditions
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 5 mph NE | 2% |
| Saturday | 75°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph E | 23% |
| Saturday Night | 63°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 6 mph SE | 77% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 8 mph W | 86% |
| Sunday Night | 55°F | Rain Showers Likely | 9 mph N | 58% |
| Monday | 68°F | Slight Chance Rain Showers | 10 mph NE | 17% |
| Monday Night | 53°F | Chance Rain Showers | 12 mph NE | 47% |
| Tuesday | 65°F | Chance Rain Showers | 14 mph E | 47% |
| Tuesday Night | 52°F | Showers And Thunderstorms Likely | 16 mph E | 60% |
| Wednesday | 63°F | Rain Showers Likely | 15 mph E | 60% |
| Wednesday Night | 51°F | Showers And Thunderstorms Likely | 10 to 14 mph E | 57% |
| Thursday | 64°F | Chance Rain Showers | 8 to 12 mph E | 45% |
| Thursday Night | 51°F | Slight Chance Rain Showers | 3 to 7 mph NE | 16% |
| Friday | 69°F | Partly Sunny then Slight Chance Rain Showers | 5 to 9 mph N | 16% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Clark, PA
Last spring frost
May 15
First fall frost
Oct 3
Growing season
140 days
Hardiness zone
6a
Explore more for Clark, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Mercer, Pa (11.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.