Clark, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clark, a borough in Mercer County, Pennsylvania.
This Afternoon
76°F
Sunny
Sunny, with a high near 76. South wind 7 to 10 mph.
7-day forecast for Clark
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Sunny | 7 to 10 mph S | 1% |
| Tonight | 55°F | Mostly Clear | 5 to 8 mph SE | 3% |
| Wednesday | 74°F | Mostly Cloudy then Chance Light Rain | 7 to 13 mph S | 33% |
| Wednesday Night | 58°F | Light Rain | 8 to 14 mph S | 100% |
| Thursday | 67°F | Slight Chance Light Rain then Mostly Sunny | 6 to 14 mph SW | 20% |
| Thursday Night | 45°F | Partly Cloudy | 1 to 6 mph SW | 2% |
| Friday | 62°F | Partly Sunny then Slight Chance Light Rain | 1 to 7 mph W | 20% |
| Friday Night | 42°F | Chance Light Rain | 5 mph NW | 35% |
| Saturday | 53°F | Chance Light Rain | 6 to 12 mph W | 35% |
| Saturday Night | 34°F | Chance Light Rain then Mostly Cloudy | 2 to 7 mph W | 35% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 3 to 9 mph W | 21% |
| Sunday Night | 33°F | Slight Chance Light Rain | 7 mph W | 23% |
| Monday | 56°F | Chance Light Rain | 6 to 13 mph W | 33% |
| Monday Night | 34°F | Chance Light Rain | 8 mph SW | 33% |
Forecast source: National Weather Service (api.weather.gov) for Clark (41.288, -80.405). Updated through the day.
Growing snapshot for Clark
Last spring frost
May 15
First fall frost
Oct 3
Growing season
140 days
Hardiness zone
6a
More local growing data for Clark: nearby ZIP 16113 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Farrell
Fredonia
Greenville
Grove City
Hermitage
Jackson Center
Lake Latonka
Mercer
New Lebanon
Reynolds Heights
Sandy Lake
Sharon
Sharpsville
Sheakleyville
Stoneboro
West Middlesex
Wheatland
Climate data from the nearest NOAA station, Mercer, Pa (10.6 mi from Clark). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.