Farmington, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Farmington, a community in Fayette County, Pennsylvania.
Tonight
62°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between midnight and 2am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 62. South wind around 3 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Farmington
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Chance Showers And Thunderstorms | 3 mph S | 49% |
| Sunday | 77°F | Showers And Thunderstorms | 6 mph SW | 81% |
| Sunday Night | 56°F | Showers And Thunderstorms | 3 mph N | 75% |
| Monday | 69°F | Chance Rain Showers | 2 to 6 mph E | 50% |
| Monday Night | 53°F | Showers And Thunderstorms | 8 mph E | 77% |
| Tuesday | 65°F | Showers And Thunderstorms | 10 mph E | 77% |
| Tuesday Night | 49°F | Showers And Thunderstorms Likely | 13 mph E | 72% |
| Wednesday | 59°F | Rain Showers Likely | 13 mph SE | 60% |
| Wednesday Night | 48°F | Chance Rain Showers | 12 mph E | 50% |
| Thursday | 61°F | Chance Rain Showers | 6 to 9 mph E | 50% |
| Thursday Night | 47°F | Slight Chance Rain Showers | 2 to 6 mph E | 20% |
| Friday | 67°F | Slight Chance Rain Showers | 5 mph NE | 17% |
| Friday Night | 46°F | Slight Chance Rain Showers then Partly Cloudy | 1 to 5 mph NE | 15% |
| Saturday | 67°F | Mostly Sunny | 1 to 6 mph NE | 13% |
Forecast source: National Weather Service (api.weather.gov) for Farmington (39.808, -79.563). Updated through the day.
Growing snapshot for Farmington
Last spring frost
May 19
First fall frost
Oct 1
Growing season
135 days
Hardiness zone
6a
More local growing data for Farmington: nearby ZIP 15437 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Chalk Hill 2 Ene, Pa (3.7 mi from Farmington). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.