Star Junction, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Star Junction, a community in Fayette County, Pennsylvania.
Tonight
52°F
Mostly Clear
Mostly clear, with a low around 52. South wind around 5 mph.
7-day forecast for Star Junction
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 76°F | Partly Sunny | 3 to 7 mph S | 7% |
| Wednesday Night | 60°F | Light Rain | 9 mph S | 99% |
| Thursday | 69°F | Chance Light Rain | 7 to 12 mph SW | 45% |
| Thursday Night | 50°F | Mostly Cloudy | 2 to 6 mph SW | 13% |
| Friday | 64°F | Partly Sunny then Slight Chance Light Rain | 2 to 7 mph W | 18% |
| Friday Night | 45°F | Chance Light Rain | 5 mph NW | 32% |
| Saturday | 54°F | Chance Light Rain | 5 to 10 mph W | 32% |
| Saturday Night | 38°F | Chance Light Rain | 3 to 7 mph W | 32% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 3 to 10 mph SW | 16% |
| Sunday Night | 36°F | Chance Light Rain | 9 mph SW | 26% |
| Monday | 54°F | Chance Light Rain | 9 to 14 mph W | 34% |
| Monday Night | 37°F | Chance Light Rain | 8 to 13 mph SW | 34% |
| Tuesday | 58°F | Mostly Sunny | 13 to 17 mph SW | 12% |
Forecast source: National Weather Service (api.weather.gov) for Star Junction (40.061, -79.766). Updated through the day.
Growing snapshot for Star Junction
Last spring frost
Apr 27
First fall frost
Oct 22
Growing season
177 days
Hardiness zone
6b
More local growing data for Star Junction: nearby ZIP 15482 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Donora 1 Sw, Pa (9 mi from Star Junction). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.