Harford, PA Weather & Growing Conditions
Today
71°F
Mostly Sunny
Mostly sunny, with a high near 71. Southeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Mostly Sunny | 3 mph SE | 0% |
| Tonight | 49°F | Mostly Cloudy then Rain | 2 to 9 mph SE | 87% |
| Sunday | 64°F | Rain | 5 to 10 mph S | 98% |
| Sunday Night | 45°F | Chance Rain then Chance Rain Showers | 5 to 8 mph NW | 54% |
| Monday | 66°F | Partly Sunny | 8 mph N | 2% |
| Monday Night | 41°F | Mostly Cloudy then Chance Rain Showers | 6 mph NE | 31% |
| Tuesday | 62°F | Chance Rain Showers | 6 mph E | 31% |
| Tuesday Night | 40°F | Slight Chance Rain Showers then Mostly Cloudy | 7 mph E | 21% |
| Wednesday | 62°F | Mostly Cloudy | 9 mph E | 9% |
| Wednesday Night | 40°F | Mostly Cloudy then Chance Rain Showers | 7 mph E | 27% |
| Thursday | 62°F | Chance Rain Showers | 7 mph E | 32% |
| Thursday Night | 41°F | Chance Rain Showers | 5 mph NE | 35% |
| Friday | 65°F | Chance Rain Showers | 7 mph N | 25% |
| Friday Night | 41°F | Chance Rain Showers | 7 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Harford, PA
Last spring frost
May 14
First fall frost
Oct 2
Growing season
141 days
Hardiness zone
6a
Explore more for Harford, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Montrose, Pa (10.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.