Live Weather & Forecast
Weather in Williamstown
Massachusetts, United States · Real-time conditions & 3-day outlook
17°C
Feels like 17°C
62°F / Feels 62°F
Light rain
Williamstown, Massachusetts
🌙 Nighttime
Updated: 2026-04-15 23:15
Humidity
90%
Wind
3.6 km/h SSW
Wind Gust
6 km/h
Pressure
1012 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
100%
Dew Point
10.5°C
Wind Degree
194°
Air Quality Index
US EPA: Good
UK DEFRA: Low (2)
CO
170.9 μg/m³
NO₂
7.5 μg/m³
O₃
69 μg/m³
SO₂
2.8 μg/m³
PM 2.5
12.6 μg/m³
PM 10
13.2 μg/m³
Today's Hourly Forecast
24-hour breakdown for Williamstown, Massachusetts
12 AM
18°
Clear
1 AM
17°
Clear
2 AM
16°
Clear
3 AM
15°
Clear
4 AM
14°
Clear
5 AM
14°
Clear
6 AM
14°
Clear
7 AM
14°
Sunny
8 AM
15°
Sunny
9 AM
16°
Sunny
10 AM
18°
Sunny
11 AM
22°
Sunny
12 PM
23°
Sunny
1 PM
26°
Sunny
2 PM
26°
Sunny
3 PM
26°
Partly Cloudy
4 PM
27°
Sunny
5 PM
26°
Sunny
6 PM
26°
Sunny
7 PM
24°
Sunny
8 PM
23°
Clear
9 PM
22°
Clear
10 PM
21°
Clear
11 PM
17°
Light rain
3-Day Forecast
Daily overview for Williamstown, Massachusetts
Today
Sunny
29°
/
13°
🌧️ 0% chance of rain
💧 Avg. humidity: 65%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.8
🌅 Sunrise: 06:11 AM
🌇 Sunset: 07:35 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Thu, Apr 16
Patchy rain nearby
26°
/
17°
🌧️ 80% chance of rain
💧 Avg. humidity: 71%
💨 Max wind: 18.4 km/h
🌧️ Total precip: 4.02 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:09 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 3% lit
Fri, Apr 17
Patchy rain nearby
17°
/
9°
🌧️ 79% chance of rain
💧 Avg. humidity: 92%
💨 Max wind: 17.3 km/h
🌧️ Total precip: 2.17 mm
☀️ UV Index: 0.6
🌅 Sunrise: 06:08 AM
🌇 Sunset: 07:38 PM
🌙 New Moon
🌑 Moon: 0% lit
Best Time to Visit Williamstown
Plan your trip to Williamstown, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Williamstown?
Current conditions in Williamstown: Light rain, temperature 17°C, humidity 90%.
What is the best time to visit Williamstown?
The best time to visit Williamstown is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Williamstown?
Williamstown is located at approximately 42.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Williamstown?
The wettest period in Williamstown is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Williamstown?
For visits to Williamstown during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Williamstown in?
Williamstown is located in United States, in the state of Massachusetts.
What are the public holidays in Williamstown in 2026?
View the 2026 public holidays for Williamstown on our Holidays page.
What are the GPS coordinates used for the weather forecast in Williamstown?
The weather forecast for Williamstown uses coordinates 42.7135, -73.2095.