Foster Brook, PA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Foster Brook, a community in Mckean County, Pennsylvania.
This Afternoon
72°F
Partly Sunny
Partly sunny, with a high near 72. North wind around 6 mph.
7-day forecast for Foster Brook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Partly Sunny | 6 mph N | 0% |
| Tonight | 45°F | Widespread Fog | 0 to 6 mph NE | 2% |
| Saturday | 69°F | Areas Of Fog then Partly Sunny | 3 mph SE | 4% |
| Saturday Night | 54°F | Showers And Thunderstorms | 5 mph SE | 84% |
| Sunday | 68°F | Showers And Thunderstorms | 6 mph W | 89% |
| Sunday Night | 46°F | Chance Rain Showers | 6 mph NE | 51% |
| Monday | 63°F | Partly Sunny | 9 mph NE | 13% |
| Monday Night | 43°F | Chance Rain Showers | 3 to 8 mph E | 45% |
| Tuesday | 60°F | Chance Rain Showers | 5 to 8 mph E | 45% |
| Tuesday Night | 42°F | Chance Rain Showers | 6 to 10 mph E | 53% |
| Wednesday | 58°F | Chance Rain Showers | 9 mph SE | 53% |
| Wednesday Night | 42°F | Chance Showers And Thunderstorms | 3 to 8 mph SE | 52% |
| Thursday | 61°F | Chance Rain Showers | 6 mph E | 52% |
| Thursday Night | 43°F | Chance Showers And Thunderstorms | 0 to 5 mph NE | 42% |
Forecast source: National Weather Service (api.weather.gov) for Foster Brook (41.983, -78.602). Updated through the day.
Growing snapshot for Foster Brook
Last spring frost
May 7
First fall frost
Oct 11
Growing season
156 days
Hardiness zone
5b
More local growing data for Foster Brook: nearby ZIP 16727 weather · frost dates · planting calendar · Pennsylvania frost dates
Nearby towns & communities
Bradford
Eldred
Kane
Lewis Run
Mount Jewett
Port Allegany
Rew
Smethport
University of Pittsburgh Bradford
Climate data from the nearest NOAA station, Olean, Ny (7.4 mi from Foster Brook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.