Williamstown, NY Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Williamstown, NY in one place.
Rain showers likely before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 75. Southwest wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Local Weather Overview
This forecast page for Williamstown, NY 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: Apr 15, 2026 5:42 PM EDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Williamstown, NY.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 5:42 PM EDT
- Forecast office
- BUF
- Source
- NOAA / NWS
Daily Outlook
This Week in Williamstown
Thursday looks like the warmest upcoming period in Williamstown at 75 degrees F.
Monday Night is the coolest period ahead with temperatures near 25 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph SE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 5:42 PM EDT
- Coverage
- 6 days
- Time zone
- America/New_York
- Forecast office
- BUF
- Radar station
- KTYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Cloudy, with a low around 50. West wind 2 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
A chance of rain showers before 2pm. Partly sunny, with a high near 65. Northwest wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Partly cloudy, with a low around 48. Northeast wind around 5 mph.
A chance of rain showers after 2pm. Partly sunny, with a high near 74. Southeast wind 5 to 15 mph. Chance of precipitation is 40%.
A chance of rain showers before 8pm, then showers and thunderstorms. Mostly cloudy, with a low around 38. Southwest wind 8 to 13 mph. Chance of precipitation is 80%.
Rain showers likely before 5pm, then a chance of snow showers. Mostly cloudy, with a high near 48. Chance of precipitation is 70%.
A chance of snow showers. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
A slight chance of snow showers. Partly sunny, with a high near 39.
A slight chance of snow showers before 8pm. Partly cloudy, with a low around 25.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 53.
A chance of rain showers. Mostly cloudy, with a low around 37.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Showers And Thunderstorms
|
75°F |
6 mph
SW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms
|
50°F |
2 to 6 mph
W
|
|
Friday
Apr 17
|
Chance Rain Showers
|
65°F |
3 to 7 mph
NW
|
|
Friday Night
Apr 17
|
Partly Cloudy
|
48°F |
5 mph
NE
|
|
Saturday
Apr 18
|
Partly Sunny then Chance Rain Showers
|
74°F |
5 to 15 mph
SE
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms
|
38°F |
8 to 13 mph
SW
|
|
Sunday
Apr 19
|
Rain Showers Likely then Chance Snow Showers
|
48°F |
8 to 12 mph
W
|
|
Sunday Night
Apr 19
|
Chance Snow Showers
|
27°F |
8 to 12 mph
W
|
|
Monday
Apr 20
|
Slight Chance Snow Showers
|
39°F |
8 to 13 mph
NW
|
|
Monday Night
Apr 20
|
Slight Chance Snow Showers then Partly Cloudy
|
25°F |
5 to 9 mph
W
|
|
Tuesday
Apr 21
|
Mostly Sunny then Slight Chance Rain Showers
|
53°F |
5 to 8 mph
S
|
|
Tuesday Night
Apr 21
|
Chance Rain Showers
|
37°F |
7 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Williamstown.