Guernsey, PA Weather Forecast
Local 7-day forecast
Mostly Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Guernsey, PA in one place.
Mostly clear, with a low around 52. South wind around 2 mph.
Local Weather Overview
This forecast page for Guernsey, 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 16, 2026 3:32 AM EDT.
The active forecast window currently covers Sep 16 to Sep 22, 2026 for Guernsey, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 22, 2026
- Latest sync
- Sep 16, 2026 3:32 AM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Guernsey
Thursday looks like the warmest upcoming period in Guernsey at 85 degrees F.
Overnight is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Saturday Night at about 5 to 8 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 16, 2026 3:32 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KLWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Patchy fog before 8am. Sunny, with a high near 84. South wind around 3 mph.
A slight chance of rain showers after 2am. Partly cloudy, with a low around 64. South wind around 2 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly sunny, with a high near 85. Southwest wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 66. West wind around 2 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 79.
Partly cloudy, with a low around 55.
Mostly sunny, with a high near 75.
A chance of rain showers after 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 40%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
A chance of rain showers. Mostly cloudy, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Sep 16
|
Mostly Clear
|
52°F |
2 mph
S
|
|
Wednesday
Sep 16
|
Patchy Fog then Sunny
|
84°F |
3 mph
S
|
|
Wednesday Night
Sep 16
|
Partly Cloudy then Slight Chance Rain Showers
|
64°F |
2 mph
S
|
|
Thursday
Sep 17
|
Showers And Thunderstorms Likely
|
85°F |
0 to 5 mph
SW
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
66°F |
2 mph
W
|
|
Friday
Sep 18
|
Mostly Sunny
|
79°F |
3 to 7 mph
N
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
55°F |
6 mph
NE
|
|
Saturday
Sep 19
|
Mostly Sunny
|
75°F |
5 mph
E
|
|
Saturday Night
Sep 19
|
Chance Rain Showers
|
61°F |
5 to 8 mph
S
|
|
Sunday
Sep 20
|
Showers And Thunderstorms Likely
|
77°F |
8 mph
SW
|
|
Sunday Night
Sep 20
|
Showers And Thunderstorms Likely
|
61°F |
6 mph
SE
|
|
Monday
Sep 21
|
Chance Rain Showers
|
75°F |
6 mph
SE
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
59°F |
6 mph
E
|
|
Tuesday
Sep 22
|
Chance Rain Showers
|
72°F |
7 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Guernsey.