Monessen, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Monessen, a city in Westmoreland County, Pennsylvania.
Today
87°F
Sunny
Sunny, with a high near 87. East wind around 5 mph.
7-day forecast for Monessen
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Sunny | 5 mph E | 0% |
| Tonight | 68°F | Partly Cloudy | 1 to 5 mph SE | 1% |
| Wednesday | 88°F | Mostly Sunny then Isolated Showers And Thunderstorms | 1 to 6 mph S | 16% |
| Wednesday Night | 69°F | Scattered Showers And Thunderstorms | 5 mph S | 49% |
| Thursday | 86°F | Showers And Thunderstorms | 3 to 8 mph SW | 76% |
| Thursday Night | 68°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 to 7 mph SW | 76% |
| Friday | 85°F | Showers And Thunderstorms | 3 to 8 mph SW | 82% |
| Friday Night | 67°F | Showers And Thunderstorms | 7 mph SW | 82% |
| Saturday | 84°F | Showers And Thunderstorms Likely | 6 to 9 mph SW | 60% |
| Saturday Night | 67°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 mph SW | 60% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph SW | 24% |
| Sunday Night | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SW | 24% |
| Monday | 88°F | Chance Showers And Thunderstorms | 8 to 12 mph SW | 37% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 9 mph SW | 48% |
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
Nearby towns & communities
Adamsburg
Arona
Avonmore
Bear Rocks
Bradenville
Calumet
Charleroi
Collinsburg
Crabtree
Delmont
Derry
Donegal
East Vandergrift
Export
Fellsburg
Grapeville
Greensburg
Harrison City
Herminie
Hostetter
Hunker
Hyde Park
Industry
Irwin
Jeannette
Kiskimere
Latrobe
Laurel Mountain
Lawson Heights
Leechburg
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 Aug 4, 2026.