Williamstown Weather Today — Pennsylvania, United States
Current temperature, rain chance, humidity, wind and air quality in Williamstown, plus an hourly and 3-day forecast. Updated through the day.
04:34
Sat, 19 Sep 2026
📍 Pennsylvania, United States
Williamstown??
18
°C
Clear
Feels 16°C · 65°F
💧 56% Humidity
💨 ↑ 13 km/h NNE
👁 10 km Visibility
🌧 0 mm Precip
☁ 5% Cloud
☀️ UV Low
🌿 AQI Good
☀️ UV Index
0
Low
🔵 Pressure
1019
hPa · 30.1 in
💨 Wind
13
km/h · Gust 32.9 km/h
↑ NNE
💧 Humidity
56%
Dew point 9.2°C
👁 Visibility
10
km · 6 miles
🌡 Heat Index
18.3°
Wind chill 18.3°C
🌿 Air Quality
Good
US EPA Index: 1
🌅
Sunrise
06:44 AM
🌇
Sunset
07:02 PM
📅 3-Day Forecast
Saturday
19 Sep 2026
Sunny
24°
/
17°
💧55%
🌧0mm
💨18
☀️UV 6.9
Sunday
20 Sep 2026
Overcast
25°
/
17°
💧76%
🌧0.55mm
💨18
☀️UV 5.3
Monday
21 Sep 2026
Overcast
24°
/
17°
💧79%
🌧0.71mm
💨18
☀️UV 4.8
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