Guilford, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Guilford, a community in Franklin County, Pennsylvania.
Today
86°F
Mostly Sunny
Mostly sunny, with a high near 86. East wind around 3 mph.
7-day forecast for Guilford
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Mostly Sunny | 3 mph E | 0% |
| Tonight | 66°F | Mostly Cloudy | 0 to 3 mph E | 10% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 1 to 5 mph E | 60% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 3 mph SE | 60% |
| Thursday | 89°F | Partly Sunny then Showers And Thunderstorms Likely | 2 to 6 mph S | 63% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 5 mph SW | 63% |
| Friday | 88°F | Partly Sunny then Showers And Thunderstorms Likely | 1 to 6 mph SW | 58% |
| Friday Night | 68°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 to 5 mph SW | 58% |
| Saturday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 1 to 6 mph W | 44% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 44% |
| Sunday | 89°F | Mostly Sunny | 0 to 5 mph SW | 13% |
| Sunday Night | 69°F | Partly Cloudy | 3 mph SW | 13% |
| Monday | 90°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 9 mph W | 15% |
| Monday Night | 69°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph SW | 15% |
Forecast source: National Weather Service (api.weather.gov) for Guilford (39.917, -77.599). Updated through the day.
Growing snapshot for Guilford
Last spring frost
Apr 18
First fall frost
Oct 25
Growing season
188 days
Hardiness zone
7a
More local growing data for Guilford: nearby ZIP 17254 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Blue Ridge Summit
Chambersburg
Fayetteville
Fort Loudon
Greencastle
Marion
Mercersburg
Mont Alto
Orrstown
Pen Mar
Rouzerville
Scotland
State Line
Wayne Heights
Waynesboro
Climate data from the nearest NOAA station, Chambersburg 1 Ese, Pa (3.5 mi from Guilford). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.