Live Weather & Forecast
Weather in South Williamsport
Pennsylvania, United States · Real-time conditions & 3-day outlook
13°C
Feels like 13°C
55°F / Feels 56°F
Clear
South Williamsport, Pennsylvania
🌞 Daytime
Updated: 2026-04-13 06:30
Humidity
72%
Wind
4 km/h SE
Wind Gust
8.3 km/h
Pressure
1018 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
9.2°C
Wind Degree
123°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
224.9 μg/m³
NO₂
4.9 μg/m³
O₃
95 μg/m³
SO₂
3.5 μg/m³
PM 2.5
6.3 μg/m³
PM 10
6.4 μg/m³
Today's Hourly Forecast
24-hour breakdown for South Williamsport, Pennsylvania
12 AM
12°
Clear
1 AM
12°
Clear
2 AM
12°
Clear
3 AM
11°
Clear
4 AM
11°
Clear
5 AM
11°
Clear
6 AM
13°
Clear
7 AM
12°
Sunny
8 AM
14°
Sunny
9 AM
17°
Sunny
10 AM
20°
Sunny
11 AM
23°
Sunny
12 PM
24°
Sunny
1 PM
24°
Sunny
2 PM
24°
Partly Cloudy
3 PM
24°
Overcast
4 PM
25°
Partly Cloudy
5 PM
25°
Patchy rain nearby
6 PM
23°
Sunny
7 PM
20°
Overcast
8 PM
20°
Cloudy
9 PM
19°
Clear
10 PM
18°
Partly Cloudy
11 PM
18°
Cloudy
3-Day Forecast
Daily overview for South Williamsport, Pennsylvania
Today
Sunny
26°
/
11°
🌧️ 0% chance of rain
💧 Avg. humidity: 70%
💨 Max wind: 18 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 1.1
🌅 Sunrise: 06:32 AM
🌇 Sunset: 07:47 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Partly Cloudy
25°
/
15°
🌧️ 0% chance of rain
💧 Avg. humidity: 78%
💨 Max wind: 18.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:30 AM
🌇 Sunset: 07:48 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Wed, Apr 15
Thundery outbreaks in nearby
30°
/
20°
🌧️ 0% chance of rain
💧 Avg. humidity: 64%
💨 Max wind: 16.2 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.4
🌅 Sunrise: 06:28 AM
🌇 Sunset: 07:49 PM
🌙 Waning Crescent
🌑 Moon: 8% lit
Best Time to Visit South Williamsport
Plan your trip to South Williamsport, 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 South Williamsport?
Current conditions in South Williamsport: Clear, temperature 13°C, humidity 72%.
What is the best time to visit South Williamsport?
The best time to visit South Williamsport is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in South Williamsport?
South Williamsport is located at approximately 41.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in South Williamsport?
The wettest period in South Williamsport is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to South Williamsport?
For visits to South Williamsport during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is South Williamsport in?
South Williamsport is located in United States, in the state of Pennsylvania.
What are the public holidays in South Williamsport in 2026?
View the 2026 public holidays for South Williamsport on our Holidays page.
What are the GPS coordinates used for the weather forecast in South Williamsport?
The weather forecast for South Williamsport uses coordinates 41.232, -76.9991.