Leechburg, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Leechburg, a borough in Westmoreland County, Pennsylvania.
Tonight
50°F
Mostly Clear
Mostly clear, with a low around 50. Southeast wind 0 to 6 mph.
7-day forecast for Leechburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 50°F | Mostly Clear | 0 to 6 mph SE | 2% |
| Wednesday | 78°F | Partly Sunny | 2 to 8 mph SE | 5% |
| Wednesday Night | 61°F | Light Rain | 8 mph S | 98% |
| Thursday | 71°F | Light Rain Likely | 7 to 14 mph SW | 56% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 6 mph SW | 4% |
| Friday | 66°F | Partly Sunny | 0 to 7 mph W | 12% |
| Friday Night | 43°F | Chance Light Rain | 2 to 6 mph NW | 30% |
| Saturday | 56°F | Chance Light Rain | 6 to 13 mph W | 30% |
| Saturday Night | 35°F | Slight Chance Light Rain then Mostly Cloudy | 3 to 9 mph W | 24% |
| Sunday | 56°F | Partly Sunny then Slight Chance Light Rain | 5 to 12 mph SW | 18% |
| Sunday Night | 34°F | Slight Chance Light Rain | 10 mph W | 22% |
| Monday | 56°F | Chance Light Rain | 10 to 17 mph W | 32% |
| Monday Night | 35°F | Chance Light Rain | 9 to 13 mph SW | 32% |
| Tuesday | 60°F | Mostly Sunny | 14 to 20 mph W | 11% |
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 Nov 4, 2026.