Monaca, PA Weather & Growing Conditions
Tonight
55°F
Mostly Clear
Mostly clear, with a low around 55. Southeast wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Mostly Clear | 0 to 5 mph SE | 2% |
| Wednesday | 76°F | Partly Sunny then Slight Chance Light Rain | 5 to 10 mph SE | 18% |
| Wednesday Night | 60°F | Light Rain | 7 to 12 mph S | 100% |
| Thursday | 68°F | Slight Chance Light Rain then Mostly Sunny | 6 to 12 mph SW | 20% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 5 mph W | 2% |
| Friday | 63°F | Partly Sunny | 0 to 6 mph W | 12% |
| Friday Night | 45°F | Chance Light Rain | 5 mph NW | 27% |
| Saturday | 54°F | Chance Light Rain | 5 to 9 mph W | 29% |
| Saturday Night | 38°F | Chance Light Rain then Mostly Cloudy | 2 to 7 mph W | 28% |
| Sunday | 54°F | Partly Sunny then Slight Chance Light Rain | 2 to 9 mph W | 16% |
| Sunday Night | 37°F | Slight Chance Light Rain | 7 mph W | 17% |
| Monday | 56°F | Chance Light Rain | 7 to 12 mph W | 27% |
| Monday Night | 39°F | Chance Light Rain then Partly Cloudy | 6 to 9 mph SW | 27% |
| Tuesday | 59°F | Mostly Sunny | 9 to 14 mph W | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Monaca, PA
Last spring frost
Apr 28
First fall frost
Oct 26
Growing season
178 days
Hardiness zone
6b
Explore more for Monaca, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Montgomery L&D, Pa (4.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.