Plainfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plainfield, a community in Cumberland County, Pennsylvania.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. East wind around 3 mph.
7-day forecast for Plainfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 67°F | Mostly Cloudy | 0 to 3 mph E | 5% |
| Wednesday | 82°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph E | 41% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 0 to 3 mph E | 61% |
| Thursday | 88°F | Patchy Fog then Showers And Thunderstorms Likely | 0 to 5 mph SW | 61% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 3 mph SW | 61% |
| Friday | 88°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 5 mph SW | 58% |
| Friday Night | 68°F | Showers And Thunderstorms Likely | 0 to 3 mph W | 58% |
| Saturday | 86°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph W | 50% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 3 mph W | 50% |
| Sunday | 88°F | Mostly Sunny | 1 to 5 mph W | 14% |
| Sunday Night | 69°F | Partly Cloudy | 3 mph SW | 14% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 8 mph W | 19% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 19% |
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
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Mount Holly Springs
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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 Aug 4, 2026.