Mechanicsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mechanicsburg, a borough in Cumberland County, Pennsylvania.
Today
84°F
Mostly Sunny
Mostly sunny, with a high near 84. East wind around 3 mph.
7-day forecast for Mechanicsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 84°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 68°F | Mostly Cloudy | 0 to 3 mph E | 5% |
| Wednesday | 82°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph E | 46% |
| Wednesday Night | 70°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 1 to 5 mph SE | 69% |
| Thursday | 88°F | Mostly Cloudy then Showers And Thunderstorms Likely | 2 to 7 mph S | 63% |
| Thursday Night | 72°F | Showers And Thunderstorms Likely | 0 to 6 mph SW | 63% |
| Friday | 88°F | Mostly Sunny then Showers And Thunderstorms Likely | 0 to 5 mph SW | 61% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 3 mph SW | 61% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 51% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph W | 51% |
| Sunday | 88°F | Mostly Sunny | 1 to 5 mph W | 12% |
| Sunday Night | 70°F | Partly Cloudy | 1 to 5 mph SW | 12% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 19% |
| Monday Night | 70°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 19% |
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
Nearby towns & communities
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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 Aug 4, 2026.