Williamstown, PA Weather Forecast
Local 7-day forecast
Light Rain
Track current conditions, temperature changes, wind, and the full daily outlook for Williamstown, PA in one place.
Rain. Mostly cloudy, with a high near 50. Northwest wind 5 to 14 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Williamstown, 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: Nov 11, 2026 6:24 AM EST.
The active forecast window currently covers Nov 12 to Nov 17, 2026 for Williamstown, PA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Nov 12 to Nov 17, 2026
- Latest sync
- Nov 11, 2026 6:24 AM EST
- Forecast office
- PBZ
- Source
- NOAA / NWS
Daily Outlook
This Week in Williamstown
Thursday looks like the warmest upcoming period in Williamstown at 50 degrees F.
Monday Night is the coolest period ahead with temperatures near 29 degrees F.
The strongest winds are forecast for Thursday at about 5 to 14 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Nov 11, 2026 6:24 AM EST
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- PBZ
- Radar station
- KPBZ
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain likely. Mostly cloudy, with a low around 34. Northwest wind 8 to 13 mph. Chance of precipitation is 60%.
A chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 40%.
A chance of rain before 10pm, then a slight chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
A slight chance of snow before 7am, then a chance of rain and snow. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
A chance of rain before 7pm. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Partly sunny, with a high near 45.
Patchy fog between 10pm and 5am. Mostly cloudy, with a low around 31.
Areas of fog before 9am. Partly sunny, with a high near 47.
Patchy fog after 10pm. Mostly cloudy, with a low around 29.
Areas of fog before 8am. Mostly sunny, with a high near 49.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Nov 12
|
Light Rain
|
50°F |
5 to 14 mph
NW
|
|
Thursday Night
Nov 12
|
Light Rain Likely
|
34°F |
8 to 13 mph
NW
|
|
Friday
Nov 13
|
Chance Light Rain
|
43°F |
12 mph
NW
|
|
Friday Night
Nov 13
|
Slight Chance Rain And Snow
|
30°F |
6 to 9 mph
W
|
|
Saturday
Nov 14
|
Chance Rain And Snow
|
42°F |
9 to 14 mph
NW
|
|
Saturday Night
Nov 14
|
Chance Light Rain then Mostly Cloudy
|
31°F |
6 to 10 mph
W
|
|
Sunday
Nov 15
|
Partly Sunny
|
45°F |
8 mph
W
|
|
Sunday Night
Nov 15
|
Patchy Fog
|
31°F |
0 to 5 mph
NW
|
|
Monday
Nov 16
|
Areas Of Fog then Partly Sunny
|
47°F |
0 to 5 mph
NW
|
|
Monday Night
Nov 16
|
Patchy Fog
|
29°F |
1 mph
N
|
|
Tuesday
Nov 17
|
Areas Of Fog then Mostly Sunny
|
49°F |
0 to 3 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Williamstown.