Monessen, PA Weather & Growing Conditions
Tonight
58°F
Partly Cloudy
Partly cloudy, with a low around 58. Northeast wind around 3 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 58°F | Partly Cloudy | 3 mph NE | 5% |
| Saturday | 81°F | Mostly Sunny | 5 mph E | 3% |
| Saturday Night | 65°F | Mostly Cloudy then Showers And Thunderstorms Likely | 6 mph SE | 55% |
| Sunday | 80°F | Showers And Thunderstorms | 9 mph SW | 94% |
| Sunday Night | 60°F | Showers And Thunderstorms | 8 mph N | 94% |
| Monday | 72°F | Chance Rain Showers | 10 mph NE | 44% |
| Monday Night | 59°F | Showers And Thunderstorms Likely | 12 mph E | 68% |
| Tuesday | 68°F | Showers And Thunderstorms | 14 mph E | 76% |
| Tuesday Night | 55°F | Showers And Thunderstorms Likely | 15 mph E | 71% |
| Wednesday | 66°F | Showers And Thunderstorms Likely | 14 mph E | 66% |
| Wednesday Night | 54°F | Chance Showers And Thunderstorms | 8 to 14 mph E | 52% |
| Thursday | 67°F | Chance Rain Showers | 9 mph E | 41% |
| Thursday Night | 53°F | Chance Rain Showers | 5 to 9 mph NE | 25% |
| Friday | 71°F | Slight Chance Rain Showers then Partly Sunny | 5 to 9 mph N | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monessen, PA
Last spring frost
Apr 13
First fall frost
Nov 5
Growing season
205 days
Hardiness zone
6b
Explore more for Monessen, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Charleroi Lock 4, Pa (0.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.