Williamstown, NJ Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Williamstown, NJ in one place.
Sunny, with a high near 69. North wind 10 to 15 mph, with gusts as high as 30 mph.
Local Weather Overview
This forecast page for Williamstown, NJ 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: May 29, 2026 10:14 PM EDT.
The active forecast window currently covers May 30 to Jun 5, 2026 for Williamstown, NJ.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 5, 2026
- Latest sync
- May 29, 2026 10:14 PM EDT
- Forecast office
- PHI
- Source
- NOAA / NWS
Daily Outlook
This Week in Williamstown
Friday looks like the warmest upcoming period in Williamstown at 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 47 degrees F.
The strongest winds are forecast for Saturday at about 10 to 15 mph N.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- May 29, 2026 10:14 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- PHI
- Radar station
- KDIX
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 47. North wind 0 to 10 mph.
Sunny, with a high near 75. Northwest wind 0 to 5 mph.
Mostly clear, with a low around 54. Southwest wind around 5 mph.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 53.
A chance of rain showers after 8am. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
A chance of rain showers before 8pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
A slight chance of rain showers between 8am and 2pm. Mostly sunny, with a high near 75.
Partly cloudy, with a low around 53.
Sunny, with a high near 81.
Mostly clear, with a low around 59.
Mostly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
May 30
|
Sunny
|
69°F |
10 to 15 mph
N
|
|
Saturday Night
May 30
|
Partly Cloudy
|
47°F |
0 to 10 mph
N
|
|
Sunday
May 31
|
Sunny
|
75°F |
0 to 5 mph
NW
|
|
Sunday Night
May 31
|
Mostly Clear
|
54°F |
5 mph
SW
|
|
Monday
Jun 1
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
76°F |
0 to 5 mph
W
|
|
Monday Night
Jun 1
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
53°F |
0 to 5 mph
NE
|
|
Tuesday
Jun 2
|
Chance Rain Showers
|
74°F |
0 to 5 mph
NE
|
|
Tuesday Night
Jun 2
|
Chance Rain Showers then Partly Cloudy
|
52°F |
0 to 5 mph
N
|
|
Wednesday
Jun 3
|
Slight Chance Rain Showers
|
75°F |
0 to 5 mph
N
|
|
Wednesday Night
Jun 3
|
Partly Cloudy
|
53°F |
0 to 5 mph
S
|
|
Thursday
Jun 4
|
Sunny
|
81°F |
0 to 5 mph
W
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
59°F |
0 to 5 mph
SW
|
|
Friday
Jun 5
|
Mostly Sunny
|
86°F |
0 to 5 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Williamstown.
