West Mifflin, PA Weather & Growing Conditions
This Afternoon
86°F
Sunny
Sunny, with a high near 86. Southeast wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 86°F | Sunny | 5 mph SE | 0% |
| Tonight | 68°F | Partly Cloudy | 6 mph SE | 1% |
| Wednesday | 86°F | Mostly Sunny then Chance Showers And Thunderstorms | 2 to 6 mph S | 29% |
| Wednesday Night | 69°F | Chance Showers And Thunderstorms | 6 mph S | 50% |
| Thursday | 85°F | Showers And Thunderstorms | 5 to 8 mph SW | 76% |
| Thursday Night | 68°F | Showers And Thunderstorms | 3 to 7 mph S | 76% |
| Friday | 84°F | Showers And Thunderstorms | 5 to 9 mph SW | 82% |
| Friday Night | 68°F | Showers And Thunderstorms | 5 to 8 mph SW | 82% |
| Saturday | 83°F | Showers And Thunderstorms Likely | 6 to 9 mph SW | 56% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 56% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph SW | 22% |
| Sunday Night | 70°F | Slight Chance Showers And Thunderstorms | 9 mph SW | 23% |
| Monday | 86°F | Chance Showers And Thunderstorms | 9 to 13 mph SW | 36% |
| Monday Night | 69°F | Chance Showers And Thunderstorms | 7 to 10 mph SW | 49% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for West Mifflin, PA
Last spring frost
Apr 18
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
6b
Explore more for West Mifflin, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Pittsburgh Allegheny Co Ap, Pa (0.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.