Clarks Summit, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clarks Summit, a borough in Lackawanna County, Pennsylvania.
Today
82°F
Sunny
Sunny, with a high near 82. Northwest wind around 1 mph.
7-day forecast for Clarks Summit
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 1 mph NW | 0% |
| Tonight | 61°F | Mostly Cloudy | 0 to 3 mph SE | 0% |
| Wednesday | 81°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SE | 34% |
| Wednesday Night | 67°F | Chance Showers And Thunderstorms | 5 mph S | 48% |
| Thursday | 84°F | Showers And Thunderstorms | 5 to 8 mph SW | 75% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 to 7 mph SW | 75% |
| Friday | 84°F | Showers And Thunderstorms Likely | 6 mph SW | 68% |
| Friday Night | 66°F | Showers And Thunderstorms Likely | 5 mph SW | 68% |
| Saturday | 83°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 55% |
| Saturday Night | 65°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph SW | 55% |
| Sunday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph SW | 15% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph SW | 15% |
| Monday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 5 to 10 mph W | 35% |
| Monday Night | 65°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 to 9 mph W | 35% |
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
6a
More local growing data for Clarks Summit: nearby ZIP 18471 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Big Bass Lake
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Carbondale
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Glenburn
Gouldsboro
Jermyn
Jessup
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Mount Cobb
Old Forge
Olyphant
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Taylor
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Waverly
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 Aug 4, 2026.