Leechburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leechburg, a borough in Westmoreland County, Pennsylvania.
Tonight
56°F
Partly Cloudy
Partly cloudy, with a low around 56. Northeast wind around 6 mph.
7-day forecast for Leechburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Partly Cloudy | 6 mph NE | 10% |
| Saturday | 78°F | Partly Sunny | 6 mph E | 5% |
| Saturday Night | 64°F | Mostly Cloudy then Showers And Thunderstorms Likely | 5 to 8 mph SE | 64% |
| Sunday | 77°F | Showers And Thunderstorms | 6 to 9 mph SW | 97% |
| Sunday Night | 58°F | Showers And Thunderstorms | 9 mph N | 97% |
| Monday | 70°F | Chance Rain Showers | 12 mph NE | 35% |
| Monday Night | 56°F | Showers And Thunderstorms Likely | 13 mph E | 62% |
| Tuesday | 66°F | Showers And Thunderstorms Likely | 15 mph E | 69% |
| Tuesday Night | 53°F | Showers And Thunderstorms Likely | 14 to 17 mph E | 65% |
| Wednesday | 64°F | Showers And Thunderstorms Likely | 15 mph E | 63% |
| Wednesday Night | 52°F | Chance Showers And Thunderstorms | 9 to 15 mph E | 51% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 10 mph E | 42% |
| Thursday Night | 52°F | Slight Chance Rain Showers | 5 to 9 mph NE | 23% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph N | 17% |
Forecast source: National Weather Service (api.weather.gov) for Leechburg (40.630, -79.602). Updated through the day.
Growing snapshot for Leechburg
Last spring frost
Apr 21
First fall frost
Oct 30
Growing season
190 days
Hardiness zone
6b
More local growing data for Leechburg: nearby ZIP 15641 weather · frost dates · planting calendar · Pennsylvania frost dates
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Level Green
Climate data from the nearest NOAA station, Schenley Lock 5, Pa (5.5 mi from Leechburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.