Clark, PA Weather & Growing Conditions
Today
75°F
Mostly Cloudy
Mostly cloudy, with a high near 75. East wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Cloudy | 6 mph E | 6% |
| Tonight | 62°F | Showers And Thunderstorms Likely | 6 mph SE | 66% |
| Sunday | 73°F | Showers And Thunderstorms | 6 to 10 mph W | 89% |
| Sunday Night | 50°F | Chance Rain Showers then Mostly Cloudy | 7 to 12 mph NE | 53% |
| Monday | 67°F | Mostly Cloudy | 10 mph NE | 12% |
| Monday Night | 49°F | Chance Rain Showers | 12 mph NE | 47% |
| Tuesday | 62°F | Chance Rain Showers | 12 to 15 mph E | 47% |
| Tuesday Night | 49°F | Rain Showers Likely | 16 mph E | 57% |
| Wednesday | 62°F | Rain Showers Likely | 14 to 17 mph E | 57% |
| Wednesday Night | 49°F | Showers And Thunderstorms Likely | 12 to 15 mph E | 63% |
| Thursday | 65°F | Showers And Thunderstorms Likely | 12 mph E | 60% |
| Thursday Night | 49°F | Slight Chance Rain Showers | 5 to 8 mph E | 19% |
| Friday | 69°F | Slight Chance Rain Showers | 6 to 9 mph NE | 19% |
| Friday Night | 48°F | Partly Cloudy | 3 to 9 mph NE | 12% |
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 (10.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.