Charleroi, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Charleroi, a borough in Westmoreland County, Pennsylvania.
This Afternoon
76°F
Partly Sunny
Partly sunny, with a high near 76. North wind around 8 mph.
7-day forecast for Charleroi
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Partly Sunny | 8 mph N | 13% |
| Tonight | 59°F | Partly Cloudy | 3 to 7 mph NE | 12% |
| Saturday | 80°F | Partly Sunny | 5 mph E | 3% |
| Saturday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 7 mph SE | 55% |
| Sunday | 78°F | Showers And Thunderstorms | 7 to 10 mph SW | 94% |
| Sunday Night | 60°F | Showers And Thunderstorms | 6 to 10 mph N | 94% |
| Monday | 70°F | Chance Rain Showers | 12 mph NE | 45% |
| Monday Night | 59°F | Showers And Thunderstorms Likely | 12 mph E | 68% |
| Tuesday | 67°F | Showers And Thunderstorms | 14 mph E | 76% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 14 mph E | 71% |
| Wednesday | 65°F | Showers And Thunderstorms Likely | 14 mph E | 66% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 7 to 14 mph E | 52% |
| Thursday | 66°F | Chance Rain Showers | 9 mph E | 42% |
| Thursday Night | 53°F | Chance Rain Showers | 5 to 9 mph NE | 26% |
Forecast source: National Weather Service (api.weather.gov) for Charleroi (40.138, -79.900). Updated through the day.
Growing snapshot for Charleroi
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
More local growing data for Charleroi: nearby ZIP 15062 weather · frost dates · planting calendar · Pennsylvania frost dates
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Level Green
Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (0.9 mi from Charleroi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.