Mechanicsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mechanicsburg, a borough in Cumberland County, Pennsylvania.
Today
75°F
Mostly Sunny
Mostly sunny, with a high near 75. South wind 5 to 10 mph.
7-day forecast for Mechanicsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 75°F | Mostly Sunny | 5 to 10 mph S | 1% |
| Tonight | 61°F | Mostly Cloudy then Light Rain Likely | 6 to 9 mph SE | 69% |
| Thursday | 74°F | Light Rain | 6 to 12 mph S | 77% |
| Thursday Night | 56°F | Chance Light Rain | 1 to 5 mph W | 37% |
| Friday | 69°F | Slight Chance Light Rain | 2 mph NW | 23% |
| Friday Night | 47°F | Slight Chance Light Rain then Partly Cloudy | 3 mph NW | 16% |
| Saturday | 60°F | Mostly Sunny | 5 to 10 mph NW | 12% |
| Saturday Night | 40°F | Partly Cloudy | 7 to 10 mph W | 12% |
| Sunday | 59°F | Mostly Sunny | 9 mph NW | 4% |
| Sunday Night | 38°F | Mostly Clear | 7 mph W | 5% |
| Monday | 59°F | Sunny | 7 to 13 mph W | 5% |
| Monday Night | 36°F | Mostly Clear | 3 to 8 mph W | 3% |
| Tuesday | 63°F | Sunny | 5 to 10 mph W | 1% |
| Tuesday Night | 38°F | Mostly Clear | 3 to 7 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Mechanicsburg (40.211, -77.006). Updated through the day.
Growing snapshot for Mechanicsburg
Last spring frost
Apr 9
First fall frost
Nov 1
Growing season
205 days
Hardiness zone
7a
More local growing data for Mechanicsburg: nearby ZIP 17055 weather · frost dates · planting calendar · Pennsylvania frost dates
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Shippensburg University
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Climate data from the nearest NOAA station, Harrisburg Cptl Cy Ap, Pa (8.2 mi from Mechanicsburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.