Sinnamahoning, PA Weather & Growing Conditions
This Afternoon
68°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny, with a high near 68. Southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 68°F | Slight Chance Rain Showers | 3 mph SE | 15% |
| Tonight | 59°F | Rain Showers | 3 to 12 mph SE | 94% |
| Sunday | 70°F | Rain Showers | 5 to 10 mph SW | 95% |
| Sunday Night | 50°F | Mostly Cloudy | 6 to 10 mph N | 13% |
| Monday | 64°F | Partly Sunny | 6 to 9 mph NE | 9% |
| Monday Night | 49°F | Chance Rain Showers | 7 to 10 mph NE | 51% |
| Tuesday | 59°F | Chance Rain Showers | 6 to 9 mph E | 51% |
| Tuesday Night | 47°F | Chance Rain Showers | 6 to 9 mph E | 46% |
| Wednesday | 56°F | Chance Rain Showers | 9 mph E | 27% |
| Wednesday Night | 46°F | Slight Chance Rain Showers | 8 mph E | 22% |
| Thursday | 58°F | Slight Chance Rain Showers | 7 mph E | 22% |
| Thursday Night | 46°F | Slight Chance Rain Showers | 5 mph NE | 23% |
| Friday | 63°F | Slight Chance Rain Showers | 5 mph N | 23% |
| Friday Night | 47°F | Slight Chance Rain Showers | 6 mph N | 18% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sinnamahoning, PA
Last spring frost
May 10
First fall frost
Oct 16
Growing season
157 days
Hardiness zone
6a
Explore more for Sinnamahoning, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Stevenson Dam, Pa (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.