Grassflat, PA Weather & Growing Conditions
Overnight
50°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 50. Wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 50°F | Patchy Fog | 0 mph | 0% |
| Tuesday | 81°F | Patchy Fog then Sunny | 0 to 3 mph SE | 0% |
| Tuesday Night | 60°F | Partly Cloudy | 3 mph E | 4% |
| Wednesday | 81°F | Chance Showers And Thunderstorms | 1 to 6 mph SE | 44% |
| Wednesday Night | 65°F | Chance Showers And Thunderstorms | 1 to 5 mph SE | 34% |
| Thursday | 82°F | Patchy Fog | 1 to 6 mph S | 85% |
| Thursday Night | 65°F | Showers And Thunderstorms | 3 mph SW | 85% |
| Friday | 82°F | Showers And Thunderstorms | 1 to 5 mph SW | 80% |
| Friday Night | 64°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 3 mph SW | 80% |
| Saturday | 81°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 6 mph W | 49% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 5 mph W | 49% |
| Sunday | 83°F | Mostly Sunny | 2 to 7 mph W | 14% |
| Sunday Night | 66°F | Partly Cloudy | 6 mph W | 14% |
| Monday | 83°F | Mostly Sunny then Chance Showers And Thunderstorms | 6 to 9 mph W | 29% |
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 Aug 4, 2026.