Clarks Summit, PA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Clarks Summit, a borough in Lackawanna County, Pennsylvania.

This Afternoon

67°F

Partly Sunny

Partly sunny, with a high near 67. Southwest wind around 5 mph.

7-day forecast for Clarks Summit

When	Temp	Forecast	Wind	Precip
This Afternoon	67°F	Partly Sunny	5 mph SW	3%
Tonight	50°F	Partly Cloudy	3 to 7 mph S	3%
Wednesday	72°F	Mostly Sunny	6 to 12 mph S	2%
Wednesday Night	58°F	Mostly Cloudy then Chance Rain Showers	8 to 13 mph S	42%
Thursday	68°F	Rain Showers	7 to 13 mph S	93%
Thursday Night	56°F	Chance Rain Showers	2 to 6 mph SW	45%
Friday	66°F	Chance Rain Showers	2 mph W	49%
Friday Night	47°F	Chance Light Rain	3 mph NW	49%
Saturday	59°F	Chance Light Rain	3 to 9 mph NW	28%
Saturday Night	39°F	Chance Light Rain	9 mph NW	28%
Sunday	56°F	Mostly Sunny	8 mph W	11%
Sunday Night	35°F	Slight Chance Light Rain	6 to 9 mph W	20%
Monday	55°F	Chance Light Rain	9 to 17 mph NW	27%
Monday Night	35°F	Chance Light Rain	12 mph W	27%

Forecast source: National Weather Service (api.weather.gov) for Clarks Summit (41.490, -75.707). Updated through the day.

Growing snapshot for Clarks Summit

Last spring frost

Apr 23

First fall frost

Oct 20

Growing season

178 days

Hardiness zone

More local growing data for Clarks Summit: nearby ZIP 18471 weather · frost dates · planting calendar · Pennsylvania frost dates

Nearby towns & communities

Archbald Big Bass Lake Blakely Carbondale Chinchilla Clarks Green Dalton Dickson City Dunmore Eagle Lake Factoryville Glenburn Gouldsboro Jermyn Jessup Mayfield Moosic Moscow Mount Cobb Old Forge Olyphant Scranton Simpson Taylor Throop Waverly

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Climate data from the nearest NOAA station, Wilkes-Barre Intl Ap, Pa (13.6 mi from Clarks Summit). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.