Plainfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a community in Cumberland County, Pennsylvania.
This Afternoon
80°F
Partly Sunny
Partly sunny, with a high near 80. North wind around 5 mph.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Partly Sunny | 5 mph N | 0% |
| Tonight | 52°F | Mostly Clear then Patchy Fog | 5 mph N | 0% |
| Saturday | 75°F | Patchy Fog then Mostly Sunny | 3 mph E | 3% |
| Saturday Night | 63°F | Chance Rain Showers | 3 to 7 mph SE | 37% |
| Sunday | 77°F | Showers And Thunderstorms | 3 to 7 mph S | 96% |
| Sunday Night | 59°F | Showers And Thunderstorms | 3 to 7 mph NW | 96% |
| Monday | 69°F | Chance Rain Showers | 7 mph NE | 36% |
| Monday Night | 55°F | Rain Showers Likely | 8 mph NE | 62% |
| Tuesday | 61°F | Rain Showers Likely | 8 mph E | 68% |
| Tuesday Night | 50°F | Rain Showers Likely | 9 mph NE | 68% |
| Wednesday | 59°F | Chance Rain Showers | 8 mph NE | 54% |
| Wednesday Night | 50°F | Chance Showers And Thunderstorms | 7 mph NE | 54% |
| Thursday | 62°F | Chance Showers And Thunderstorms | 6 mph NE | 50% |
| Thursday Night | 50°F | Chance Rain Showers | 1 to 5 mph N | 41% |
Forecast source: National Weather Service (api.weather.gov) for Plainfield (40.201, -77.283). Updated through the day.
Growing snapshot for Plainfield
Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
7a
More local growing data for Plainfield: nearby ZIP 17081 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Boiling Springs
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Lemoyne
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Marysville
Mechanicsburg
Messiah College
Mount Holly Springs
New Kingstown
Newburg
Newville
Schlusser
Shippensburg
Shippensburg University
Shiremanstown
Climate data from the nearest NOAA station, Carlisle Wtp, Pa (5.2 mi from Plainfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.