Harrisburg, PA Weather & Growing Conditions
Today
76°F
Mostly Sunny
Mostly sunny, with a high near 76. South wind 6 to 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Mostly Sunny | 6 to 10 mph S | 1% |
| Tonight | 61°F | Mostly Cloudy then Light Rain Likely | 8 mph SE | 64% |
| Thursday | 75°F | Light Rain | 6 to 10 mph S | 80% |
| Thursday Night | 56°F | Chance Light Rain | 0 to 5 mph W | 43% |
| Friday | 70°F | Chance Light Rain | 2 mph NW | 26% |
| Friday Night | 48°F | Slight Chance Light Rain then Partly Cloudy | 3 mph NW | 18% |
| Saturday | 61°F | Mostly Sunny | 5 to 12 mph NW | 12% |
| Saturday Night | 41°F | Partly Cloudy | 7 to 10 mph W | 12% |
| Sunday | 60°F | Mostly Sunny | 9 mph NW | 4% |
| Sunday Night | 39°F | Mostly Clear | 7 mph W | 5% |
| Monday | 60°F | Sunny | 6 to 13 mph W | 5% |
| Monday Night | 38°F | Mostly Clear | 3 to 8 mph W | 3% |
| Tuesday | 64°F | Sunny | 3 to 10 mph W | 1% |
| Tuesday Night | 39°F | Mostly Clear | 3 to 7 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harrisburg, PA
Last spring frost
Apr 15
First fall frost
Oct 23
Growing season
189 days
Hardiness zone
7a
Explore more for Harrisburg, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Harrisburg 1 Ne, Pa (1.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.