Fairfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a borough in Adams County, Pennsylvania.
Tonight
51°F
Mostly Clear
Mostly clear, with a low around 51. South wind around 2 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Clear | 2 mph S | 0% |
| Wednesday | 74°F | Mostly Sunny | 0 to 10 mph S | 0% |
| Wednesday Night | 61°F | Mostly Cloudy then Rain Showers | 7 mph S | 83% |
| Thursday | 74°F | Rain Showers | 3 to 8 mph S | 79% |
| Thursday Night | 59°F | Rain Showers Likely | 0 to 3 mph W | 56% |
| Friday | 70°F | Rain Showers Likely | 2 mph NW | 56% |
| Friday Night | 49°F | Chance Rain Showers then Mostly Cloudy | 0 to 3 mph NW | 47% |
| Saturday | 63°F | Mostly Sunny | 5 to 9 mph NW | 13% |
| Saturday Night | 40°F | Partly Cloudy | 3 to 7 mph NW | 13% |
| Sunday | 60°F | Mostly Sunny | 3 to 7 mph W | 7% |
| Sunday Night | 38°F | Partly Cloudy then Slight Chance Rain Showers | 7 mph W | 22% |
| Monday | 59°F | Slight Chance Rain Showers | 7 to 13 mph NW | 23% |
| Monday Night | 38°F | Slight Chance Rain Showers | 3 to 8 mph W | 23% |
| Tuesday | 63°F | Sunny | 7 to 12 mph W | 11% |
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 Nov 4, 2026.