Jefferson Hills, PA Weather & Growing Conditions
Tonight
53°F
Mostly Clear
Mostly clear, with a low around 53. Southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Mostly Clear | 0 to 5 mph SE | 2% |
| Wednesday | 78°F | Partly Sunny | 3 to 10 mph S | 8% |
| Wednesday Night | 61°F | Light Rain | 10 mph S | 97% |
| Thursday | 72°F | Chance Light Rain | 8 to 14 mph SW | 34% |
| Thursday Night | 49°F | Partly Cloudy | 1 to 7 mph SW | 5% |
| Friday | 66°F | Partly Sunny | 1 to 8 mph W | 11% |
| Friday Night | 45°F | Chance Light Rain | 2 to 6 mph NW | 27% |
| Saturday | 57°F | Chance Light Rain | 6 to 13 mph W | 29% |
| Saturday Night | 37°F | Chance Light Rain then Mostly Cloudy | 3 to 9 mph W | 26% |
| Sunday | 57°F | Partly Sunny then Slight Chance Light Rain | 5 to 12 mph SW | 16% |
| Sunday Night | 36°F | Slight Chance Light Rain | 10 mph W | 20% |
| Monday | 57°F | Chance Light Rain | 10 to 16 mph W | 30% |
| Monday Night | 36°F | Chance Light Rain then Partly Cloudy | 9 to 13 mph SW | 30% |
| Tuesday | 61°F | Mostly Sunny | 13 to 18 mph SW | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Jefferson Hills, PA
Last spring frost
Apr 18
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
6b
Explore more for Jefferson Hills, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Pittsburgh Allegheny Co Ap, Pa (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.