Clarks Summit, PA Weather & Growing Conditions
Today
72°F
Mostly Sunny
Mostly sunny. High near 72, with temperatures falling to around 66 in the afternoon. Southwest wind 6 to 12 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Mostly Sunny | 6 to 12 mph SW | 2% |
| Tonight | 58°F | Mostly Cloudy then Chance Light Rain | 9 to 15 mph S | 30% |
| Thursday | 69°F | Light Rain | 8 to 15 mph S | 96% |
| Thursday Night | 54°F | Chance Light Rain | 2 to 7 mph SW | 40% |
| Friday | 66°F | Chance Light Rain | 2 mph W | 26% |
| Friday Night | 46°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph NW | 19% |
| Saturday | 59°F | Chance Light Rain | 3 to 9 mph W | 41% |
| Saturday Night | 40°F | Chance Light Rain | 10 to 14 mph W | 41% |
| Sunday | 54°F | Slight Chance Light Rain then Partly Sunny | 9 to 13 mph W | 18% |
| Sunday Night | 36°F | Partly Cloudy | 10 mph W | 7% |
| Monday | 54°F | Mostly Sunny | 10 to 15 mph W | 12% |
| Monday Night | 34°F | Partly Cloudy | 9 mph W | 12% |
| Tuesday | 58°F | Mostly Sunny | 9 to 14 mph SW | 5% |
| Tuesday Night | 35°F | Partly Cloudy | 9 mph W | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Clarks Summit, PA
Last spring frost
Apr 23
First fall frost
Oct 20
Growing season
178 days
Hardiness zone
6a
Explore more for Clarks Summit, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Wilkes-Barre Intl Ap, Pa (8.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.