Monroeville, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monroeville, a municipality in Allegheny County, Pennsylvania.
Today
86°F
Sunny
Sunny, with a high near 86. Southeast wind around 5 mph.
7-day forecast for Monroeville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Sunny | 5 mph SE | 0% |
| Tonight | 66°F | Mostly Clear | 6 mph SE | 1% |
| Wednesday | 86°F | Partly Sunny then Isolated Showers And Thunderstorms | 2 to 6 mph SE | 23% |
| Wednesday Night | 68°F | Scattered Showers And Thunderstorms | 6 mph S | 50% |
| Thursday | 86°F | Showers And Thunderstorms Likely | 3 to 9 mph SW | 74% |
| Thursday Night | 68°F | Showers And Thunderstorms Likely | 3 to 7 mph SW | 74% |
| Friday | 84°F | Showers And Thunderstorms | 5 to 9 mph SW | 81% |
| Friday Night | 66°F | Showers And Thunderstorms | 5 to 8 mph SW | 81% |
| Saturday | 83°F | Showers And Thunderstorms Likely | 6 to 9 mph SW | 56% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 5 to 8 mph SW | 56% |
| Sunday | 86°F | Slight Chance Showers And Thunderstorms | 6 to 12 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 7 to 10 mph SW | 24% |
| Monday | 87°F | Chance Showers And Thunderstorms | 9 to 14 mph SW | 40% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 7 to 12 mph SW | 50% |
Forecast source: National Weather Service (api.weather.gov) for Monroeville (40.426, -79.761). Updated through the day.
Growing snapshot for Monroeville
Last spring frost
Apr 22
First fall frost
Oct 25
Growing season
186 days
Hardiness zone
6b
More local growing data for Monroeville: nearby ZIP 15146 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Murrysville 2 Sw, Pa (2.2 mi from Monroeville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.