Clairton, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Clairton, a city in Allegheny County, Pennsylvania.
This Afternoon
79°F
Sunny
Sunny, with a high near 79. South wind 2 to 7 mph.
7-day forecast for Clairton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Sunny | 2 to 7 mph S | 1% |
| Tonight | 53°F | Mostly Clear | 5 mph SE | 2% |
| Wednesday | 78°F | Partly Sunny | 2 to 10 mph SE | 8% |
| Wednesday Night | 61°F | Light Rain | 9 mph S | 98% |
| Thursday | 72°F | Chance Light Rain | 7 to 14 mph SW | 37% |
| Thursday Night | 49°F | Partly Cloudy | 1 to 6 mph SW | 6% |
| Friday | 66°F | Partly Sunny | 1 to 7 mph W | 11% |
| Friday Night | 44°F | Mostly Cloudy then Slight Chance Rain Showers | 2 to 6 mph NW | 21% |
| Saturday | 57°F | Chance Rain Showers | 6 to 13 mph W | 25% |
| Saturday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 2 to 9 mph W | 24% |
| Sunday | 56°F | Partly Sunny | 3 to 13 mph SW | 11% |
| Sunday Night | 35°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 9 mph W | 19% |
| Monday | 58°F | Slight Chance Rain Showers | 8 to 14 mph W | 19% |
| Monday Night | 36°F | Slight Chance Rain Showers then Partly Cloudy | 7 to 12 mph SW | 17% |
Forecast source: National Weather Service (api.weather.gov) for Clairton (40.297, -79.889). Updated through the day.
Growing snapshot for Clairton
Last spring frost
May 2
First fall frost
Oct 20
Growing season
170 days
Hardiness zone
6b
More local growing data for Clairton: nearby ZIP 15088 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Mckeesport, Pa (5.1 mi from Clairton). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.