Monessen, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monessen, a city in Westmoreland County, Pennsylvania.
Today
81°F
Partly Sunny
Partly sunny, with a high near 81. East wind around 5 mph.
7-day forecast for Monessen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Partly Sunny | 5 mph E | 3% |
| Tonight | 65°F | Chance Rain Showers | 7 mph SE | 46% |
| Sunday | 80°F | Showers And Thunderstorms | 7 to 10 mph SW | 94% |
| Sunday Night | 56°F | Showers And Thunderstorms | 7 to 10 mph N | 94% |
| Monday | 70°F | Chance Rain Showers | 12 mph NE | 43% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 12 mph NE | 71% |
| Tuesday | 65°F | Showers And Thunderstorms Likely | 10 to 15 mph E | 71% |
| Tuesday Night | 51°F | Rain Showers Likely | 16 mph E | 64% |
| Wednesday | 63°F | Rain Showers Likely | 14 mph E | 64% |
| Wednesday Night | 51°F | Showers And Thunderstorms Likely | 8 to 14 mph E | 56% |
| Thursday | 67°F | Rain Showers Likely | 9 mph E | 56% |
| Thursday Night | 50°F | Chance Showers And Thunderstorms | 5 to 9 mph NE | 35% |
| Friday | 70°F | Partly Sunny then Slight Chance Rain Showers | 5 to 9 mph NE | 21% |
| Friday Night | 49°F | Slight Chance Rain Showers then Partly Cloudy | 5 to 8 mph NE | 21% |
Forecast source: National Weather Service (api.weather.gov) for Monessen (40.152, -79.883). Updated through the day.
Growing snapshot for Monessen
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
More local growing data for Monessen: nearby ZIP 15062 weather · frost dates · planting calendar · Pennsylvania frost dates
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Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (0.9 mi from Monessen). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.