McKees Rocks, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for McKees Rocks, a borough in Allegheny County, Pennsylvania.
Tonight
54°F
Mostly Clear
Mostly clear, with a low around 54. Southeast wind around 6 mph.
7-day forecast for McKees Rocks
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Mostly Clear | 6 mph SE | 2% |
| Wednesday | 78°F | Partly Sunny | 3 to 10 mph S | 8% |
| Wednesday Night | 61°F | Light Rain | 10 mph S | 100% |
| Thursday | 71°F | Chance Light Rain then Mostly Sunny | 6 to 13 mph SW | 25% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph SW | 3% |
| Friday | 66°F | Partly Sunny | 0 to 6 mph W | 11% |
| Friday Night | 46°F | Slight Chance Light Rain | 5 mph NW | 24% |
| Saturday | 56°F | Chance Light Rain | 5 to 12 mph W | 29% |
| Saturday Night | 40°F | Chance Light Rain then Mostly Cloudy | 2 to 8 mph W | 26% |
| Sunday | 57°F | Partly Sunny then Slight Chance Light Rain | 2 to 10 mph W | 16% |
| Sunday Night | 38°F | Slight Chance Light Rain | 8 mph W | 18% |
| Monday | 57°F | Chance Light Rain | 8 to 14 mph W | 27% |
| Monday Night | 39°F | Chance Light Rain then Partly Cloudy | 7 to 10 mph SW | 27% |
| Tuesday | 61°F | Mostly Sunny | 12 to 16 mph W | 9% |
Forecast source: National Weather Service (api.weather.gov) for McKees Rocks (40.469, -80.063). Updated through the day.
Growing snapshot for McKees Rocks
Last spring frost
Apr 24
First fall frost
Oct 27
Growing season
186 days
Hardiness zone
7a
More local growing data for McKees Rocks: nearby ZIP 15204 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Emsworth L/D Ohio Rvr, Pa (3.6 mi from McKees Rocks). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.