Grand Valley, PA Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Valley, PA in one place.
Mostly sunny, with a high near 77. South wind 3 to 8 mph.
Local Weather Overview
This forecast page for Grand Valley, 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 14, 2026 6:10 PM EDT.
The active forecast window currently covers Sep 15 to Sep 20, 2026 for Grand Valley, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 20, 2026
- Latest sync
- Sep 14, 2026 6:10 PM EDT
- Forecast office
- CTP
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Valley
Thursday looks like the warmest upcoming period in Grand Valley at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Tuesday at about 3 to 8 mph S.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 6:10 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- CTP
- Radar station
- KPBZ
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 58. South wind 2 to 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 9am, then patchy fog and a slight chance of rain showers between 9am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 81. Southwest wind around 2 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
A chance of rain showers before 8am, then showers and thunderstorms likely. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
A slight chance of rain showers. Partly sunny, with a high near 77.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 57.
A chance of rain showers after 8am. Partly sunny, with a high near 79. Chance of precipitation is 40%.
A chance of rain showers before 8pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Rain showers likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
A chance of rain showers. Mostly cloudy, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Sep 15
|
Mostly Sunny
|
77°F |
3 to 8 mph
S
|
|
Tuesday Night
Sep 15
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
58°F |
2 to 7 mph
S
|
|
Wednesday
Sep 16
|
Chance Showers And Thunderstorms
|
81°F |
2 mph
SW
|
|
Wednesday Night
Sep 16
|
Chance Showers And Thunderstorms
|
64°F |
2 mph
E
|
|
Thursday
Sep 17
|
Showers And Thunderstorms Likely
|
82°F |
1 to 6 mph
SW
|
|
Thursday Night
Sep 17
|
Showers And Thunderstorms Likely
|
62°F |
3 mph
NW
|
|
Friday
Sep 18
|
Slight Chance Rain Showers
|
77°F |
1 to 5 mph
N
|
|
Friday Night
Sep 18
|
Slight Chance Rain Showers then Partly Cloudy
|
57°F |
5 mph
NE
|
|
Saturday
Sep 19
|
Chance Rain Showers
|
79°F |
3 to 7 mph
S
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms Likely
|
61°F |
6 mph
SW
|
|
Sunday
Sep 20
|
Rain Showers Likely
|
77°F |
7 mph
SW
|
|
Sunday Night
Sep 20
|
Chance Rain Showers
|
56°F |
7 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Valley.