See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
18°
Clear
Feels Like: 23°
Min: 9°
Max: 21°
The next few hours will be clear, with tomorrow reaching 25°C and dropping to 13°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
06:54
Sunrise
19:10
Sunset
Moon
Waxing Crescent
11:45
Moonrise
20:41
Moonset
Daily Forecast
Tuesday
Today
Thursday
Friday
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Air Quality Data Available
Upgrade to access real-time air quality data for Williamsport.
Resources
UV Index
Humidity
Weather in Williamsport tomorrow, September 16, 2026
Expect a mostly clear day in Williamsport on September 16, 2026, with sunshine dominating from morning through evening. Cloud should stay limited, so the overall feel remains bright and settled. Expect a grey start, with morning cloud around 100% by 08:00. Outdoor plans early on should not rely on bright skies.
The day peaks near 25°C and cools toward 15°C. Relative humidity sits between 18% and 82%, reaching its peak around 07:00. A lighter breeze peaks around 17:00 near 4.0 km/h.
Expect a more open afternoon, with limited cloud around 20% by 19:00. Residual damp risk should be lower than earlier. Views remain open at about 16.1 km. Daylight runs from 06:55 to 19:08, lasting 12 hours 12 minutes of sunlight today.
In short, September 16, 2026 looks like a fine day in Williamsport for being outside, peaking around 25°C.
Frequently asked questions about weather in Williamsport
How warm does it get in Williamsport?
The warmest month in Williamsport is July, with average high temperatures of 29°C. The average temperature during this period is around 23°C.
How cold does it get in Williamsport?
The coldest month in Williamsport is January, with average low temperatures of -5°C. The average temperature during this period is around -2°C.
What is the wettest time of year in Williamsport?
The wettest month in Williamsport is May, with an average of 121mm of precipitation.
What is the driest time of year in Williamsport?
The driest month in Williamsport is November, with an average of 80mm of precipitation.
Explore more weather forecasts
- Bloomsburg, Pennsylvania
- New York City, New York
- Berwick, Pennsylvania
- Los Angeles, California
- Nanticoke, Pennsylvania
- Brooklyn, New York
- Back Mountain, Pennsylvania
- Chicago, Illinois
- State College, Pennsylvania
- Houston, Texas
- Hazleton, Pennsylvania
- Queens, New York
- Pottsville, Pennsylvania
- Phoenix, Arizona
- Kingston, Pennsylvania
- Philadelphia, Pennsylvania
