Grassflat, PA Weather & Growing Conditions
This Afternoon
71°F
Mostly Sunny
Mostly sunny, with a high near 71. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Mostly Sunny | 5 mph S | 2% |
| Tonight | 48°F | Mostly Clear | 5 mph S | 2% |
| Wednesday | 72°F | Mostly Sunny | 2 to 9 mph SE | 3% |
| Wednesday Night | 58°F | Mostly Cloudy then Rain Showers | 9 mph S | 99% |
| Thursday | 70°F | Rain Showers | 5 to 9 mph SW | 75% |
| Thursday Night | 48°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph SW | 16% |
| Friday | 65°F | Chance Rain Showers | 0 to 3 mph W | 28% |
| Friday Night | 42°F | Slight Chance Rain Showers | 2 mph NW | 20% |
| Saturday | 56°F | Chance Rain Showers | 3 to 9 mph W | 30% |
| Saturday Night | 35°F | Chance Rain Showers then Partly Cloudy | 5 to 8 mph W | 29% |
| Sunday | 54°F | Partly Sunny | 5 to 9 mph W | 12% |
| Sunday Night | 33°F | Slight Chance Rain Showers | 9 mph W | 20% |
| Monday | 54°F | Chance Rain Showers | 9 to 13 mph W | 28% |
| Monday Night | 34°F | Chance Rain Showers | 9 mph W | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grassflat, PA
Last spring frost
May 21
First fall frost
Sep 27
Growing season
130 days
Hardiness zone
6a
Explore more for Grassflat, PA: full frost dates · planting calendar · Pennsylvania frost dates
Climate data from the nearest NOAA station, Clarence, Pa (9.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.