Grassy Island, PA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grassy Island, PA in one place.
Mostly sunny, with a high near 82. Southwest wind around 3 mph.
Local Weather Overview
This forecast page for Grassy Island, PA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Sep 15, 2026 7:05 AM EDT.
The active forecast window currently covers Sep 16 to Sep 21, 2026 for Grassy Island, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 7:05 AM EDT
- Forecast office
- BGM
- Source
- NOAA / NWS
Daily Outlook
This Week in Grassy Island
Thursday looks like the warmest upcoming period in Grassy Island at 84 degrees F.
Friday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Saturday Night at about 7 to 13 mph S.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 7:05 AM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- BGM
- Radar station
- KBGM
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly cloudy, with a low around 64. South wind around 1 mph.
A chance of rain showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
A chance of rain showers before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 50%.
A slight chance of rain showers before 8am. Partly sunny, with a high near 78.
Partly cloudy, with a low around 52.
Mostly sunny, with a high near 74.
A chance of rain showers after 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Rain showers likely before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
A chance of rain showers. Mostly cloudy, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Mostly Sunny
|
82°F |
3 mph
SW
|
|
Wednesday Night
Sep 16
|
Partly Cloudy
|
64°F |
1 mph
S
|
|
Thursday
Sep 17
|
Partly Sunny then Chance Rain Showers
|
84°F |
0 to 7 mph
SW
|
|
Thursday Night
Sep 17
|
Chance Showers And Thunderstorms
|
64°F |
5 mph
W
|
|
Friday
Sep 18
|
Slight Chance Rain Showers then Partly Sunny
|
78°F |
5 to 9 mph
NW
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
52°F |
2 to 8 mph
NE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
74°F |
2 to 6 mph
SE
|
|
Saturday Night
Sep 19
|
Chance Rain Showers
|
59°F |
7 to 13 mph
S
|
|
Sunday
Sep 20
|
Rain Showers Likely
|
77°F |
13 mph
SW
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely
|
57°F |
6 to 10 mph
NW
|
|
Monday
Sep 21
|
Chance Rain Showers
|
73°F |
6 to 9 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grassy Island.