Belle Vernon, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Belle Vernon, a borough in Washington County, Pennsylvania.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. South wind around 2 mph.
7-day forecast for Belle Vernon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 2 mph S | 1% |
| Wednesday | 79°F | Partly Sunny | 1 to 8 mph S | 9% |
| Wednesday Night | 60°F | Light Rain | 9 mph S | 95% |
| Thursday | 71°F | Chance Light Rain then Partly Sunny | 7 to 12 mph SW | 48% |
| Thursday Night | 47°F | Partly Cloudy | 2 to 6 mph SW | 2% |
| Friday | 65°F | Partly Sunny then Slight Chance Light Rain | 2 to 8 mph SW | 20% |
| Friday Night | 41°F | Chance Light Rain | 3 to 7 mph W | 34% |
| Saturday | 54°F | Chance Light Rain | 7 to 12 mph W | 34% |
| Saturday Night | 35°F | Chance Light Rain | 6 to 9 mph W | 29% |
| Sunday | 56°F | Partly Sunny | 6 to 13 mph W | 7% |
| Sunday Night | 32°F | Partly Cloudy | 9 mph SW | 6% |
| Monday | 56°F | Mostly Sunny | 8 to 13 mph W | 10% |
| Monday Night | 33°F | Mostly Clear | 6 to 10 mph SW | 9% |
| Tuesday | 61°F | Sunny | 10 to 15 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Belle Vernon (40.123, -79.862). Updated through the day.
Growing snapshot for Belle Vernon
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
More local growing data for Belle Vernon: nearby ZIP 15432 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (3.3 mi from Belle Vernon). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.