Mechanicsburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mechanicsburg, a borough in Cumberland County, Pennsylvania.
This Afternoon
81°F
Partly Sunny
Partly sunny, with a high near 81. North wind around 8 mph.
7-day forecast for Mechanicsburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 81°F | Partly Sunny | 8 mph N | 0% |
| Tonight | 53°F | Partly Cloudy | 3 to 7 mph N | 0% |
| Saturday | 76°F | Patchy Fog then Mostly Sunny | 5 mph E | 3% |
| Saturday Night | 63°F | Chance Rain Showers | 5 to 10 mph SE | 43% |
| Sunday | 77°F | Showers And Thunderstorms | 6 to 12 mph S | 95% |
| Sunday Night | 61°F | Showers And Thunderstorms | 5 to 9 mph NW | 95% |
| Monday | 69°F | Chance Rain Showers | 9 mph N | 36% |
| Monday Night | 57°F | Chance Rain Showers | 6 to 10 mph NE | 52% |
| Tuesday | 62°F | Rain Showers Likely | 10 mph NE | 63% |
| Tuesday Night | 51°F | Rain Showers Likely | 12 mph NE | 63% |
| Wednesday | 60°F | Chance Rain Showers | 12 mph NE | 52% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 9 mph NE | 52% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 9 mph NE | 46% |
| Thursday Night | 52°F | Chance Showers And Thunderstorms | 6 mph N | 39% |
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
Boiling Springs
Camp Hill
Carlisle
Carlisle Barracks
Dauphin
Enola
Gardners
Idaville
Lemoyne
Lower Allen
Marysville
Messiah College
Mount Holly Springs
New Kingstown
Newburg
Newville
Plainfield
Schlusser
Shippensburg
Shippensburg University
Shiremanstown
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 Sep 18, 2026.