Fairfield, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairfield, a borough in Adams County, Pennsylvania.
Overnight
50°F
Patchy Fog
Patchy fog after 3am. Mostly clear, with a low around 50. South wind around 2 mph.
7-day forecast for Fairfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Patchy Fog | 2 mph S | 0% |
| Wednesday | 74°F | Patchy Fog then Mostly Sunny | 0 to 10 mph S | 1% |
| Wednesday Night | 61°F | Mostly Cloudy then Light Rain | 5 to 8 mph S | 82% |
| Thursday | 74°F | Light Rain | 3 to 9 mph S | 75% |
| Thursday Night | 57°F | Chance Light Rain | 0 to 3 mph W | 46% |
| Friday | 69°F | Slight Chance Light Rain | 2 mph N | 22% |
| Friday Night | 47°F | Slight Chance Light Rain then Partly Cloudy | 0 to 3 mph NW | 19% |
| Saturday | 61°F | Mostly Sunny | 3 to 12 mph W | 13% |
| Saturday Night | 39°F | Partly Cloudy | 9 mph W | 13% |
| Sunday | 59°F | Mostly Sunny | 10 mph NW | 3% |
| Sunday Night | 37°F | Mostly Clear | 7 mph W | 3% |
| Monday | 59°F | Sunny | 7 to 13 mph W | 4% |
| Monday Night | 36°F | Mostly Clear | 2 to 7 mph W | 4% |
| Tuesday | 63°F | Sunny | 5 to 10 mph W | 2% |
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.