Harmonsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Harmonsburg, a community in Crawford County, Pennsylvania.
Tonight
57°F
Mostly Clear
Mostly clear, with a low around 57. Southeast wind 7 to 10 mph.
7-day forecast for Harmonsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Mostly Clear | 7 to 10 mph SE | 2% |
| Wednesday | 73°F | Partly Sunny then Chance Light Rain | 9 to 14 mph S | 41% |
| Wednesday Night | 58°F | Light Rain | 9 to 14 mph S | 84% |
| Thursday | 66°F | Slight Chance Light Rain then Mostly Sunny | 8 to 14 mph SW | 24% |
| Thursday Night | 48°F | Partly Cloudy | 2 to 6 mph SW | 2% |
| Friday | 61°F | Partly Sunny then Chance Light Rain | 2 to 7 mph W | 27% |
| Friday Night | 44°F | Chance Light Rain | 2 to 7 mph NW | 43% |
| Saturday | 52°F | Chance Light Rain | 7 to 10 mph W | 42% |
| Saturday Night | 38°F | Chance Light Rain | 3 to 8 mph W | 41% |
| Sunday | 53°F | Partly Sunny then Slight Chance Light Rain | 3 to 10 mph W | 24% |
| Sunday Night | 36°F | Chance Light Rain | 7 mph W | 30% |
| Monday | 54°F | Chance Light Rain | 7 to 13 mph W | 35% |
| Monday Night | 38°F | Chance Light Rain | 6 to 9 mph SW | 35% |
| Tuesday | 58°F | Slight Chance Light Rain | 9 to 14 mph W | 16% |
Forecast source: National Weather Service (api.weather.gov) for Harmonsburg (41.666, -80.314). Updated through the day.
Growing snapshot for Harmonsburg
Last spring frost
Apr 30
First fall frost
Oct 23
Growing season
175 days
Hardiness zone
6a
More local growing data for Harmonsburg: nearby ZIP 16422 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
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Linesville
Meadville
Pymatuning Central
Pymatuning North
Pymatuning South
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Climate data from the nearest NOAA station, Port Meadville Ap, Pa (5.7 mi from Harmonsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.