Harmonsburg, PA Weather & Growing Conditions
Today
82°F
Sunny
Sunny, with a high near 82. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Sunny | 3 mph SE | 0% |
| Tonight | 62°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 85°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 mph S | 47% |
| Wednesday Night | 66°F | Chance Showers And Thunderstorms | 5 mph SE | 47% |
| Thursday | 84°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 61% |
| Thursday Night | 66°F | Showers And Thunderstorms Likely | 5 mph SW | 61% |
| Friday | 82°F | Showers And Thunderstorms Likely | 6 mph SW | 74% |
| Friday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 mph SW | 74% |
| Saturday | 83°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 to 8 mph SW | 40% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 2 to 6 mph SW | 40% |
| Sunday | 86°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph SW | 23% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 8 mph SW | 39% |
| Monday | 84°F | Chance Rain Showers | 7 to 12 mph SW | 48% |
| Monday Night | 65°F | Chance Showers And Thunderstorms | 3 to 8 mph W | 53% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harmonsburg, PA
Last spring frost
Apr 30
First fall frost
Oct 23
Growing season
175 days
Hardiness zone
6a
Explore more for Harmonsburg, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Port Meadville Ap, Pa (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.