Fairfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a borough in Adams County, Pennsylvania.
Tonight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. North wind around 6 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Partly Cloudy | 6 mph N | 0% |
| Saturday | 75°F | Mostly Sunny | 5 mph NE | 3% |
| Saturday Night | 63°F | Mostly Cloudy then Chance Rain Showers | 3 to 7 mph SE | 36% |
| Sunday | 78°F | Showers And Thunderstorms | 5 to 8 mph S | 82% |
| Sunday Night | 60°F | Showers And Thunderstorms | 1 to 8 mph NW | 82% |
| Monday | 69°F | Chance Rain Showers | 8 mph NE | 38% |
| Monday Night | 56°F | Rain Showers Likely | 6 to 9 mph NE | 57% |
| Tuesday | 61°F | Rain Showers Likely | 9 mph NE | 71% |
| Tuesday Night | 51°F | Rain Showers Likely | 10 mph NE | 71% |
| Wednesday | 59°F | Rain Showers Likely | 10 mph NE | 57% |
| Wednesday Night | 51°F | Chance Showers And Thunderstorms | 9 mph NE | 53% |
| Thursday | 61°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 50% |
| Thursday Night | 51°F | Chance Rain Showers | 2 to 7 mph N | 42% |
| Friday | 67°F | Chance Rain Showers | 7 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Fairfield (39.789, -77.370). Updated through the day.
Growing snapshot for Fairfield
Last spring frost
Apr 28
First fall frost
Oct 17
Growing season
170 days
Hardiness zone
7a
More local growing data for Fairfield: nearby ZIP 17320 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Abbottstown
Arendtsville
Aspers
Bendersville
Biglerville
Bonneauville
Carroll Valley
Cashtown
East Berlin
Gettysburg
Hampton
Heidlersburg
Hunterstown
Lake Heritage
Lake Meade
Littlestown
McKnightstown
McSherrystown
Midway
New Oxford
Orrtanna
Table Rock
York Springs
Climate data from the nearest NOAA station, Cashtown 1S, Pa (7.9 mi from Fairfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.