Williamsport 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

Williamsport 7-day weather forecast

Stacker created the forecast for Williamsport, Pennsylvania using data from OpenWeather. This week's high is 80 °F on Thursday, while the low is 46 °F on Tuesday. There are expected to be 4 sunny days and rain on 1 day this week.

There are currently no weather alerts.

Monday, September 8

- High of 75 °F, low of 47 °F (36% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (4 mph wind)
- Sunrise at 6:41 AM, sunset at 7:29 PM
1 / 6
supergenijalac // Shutterstock

Tuesday, September 9

- High of 75 °F, low of 46 °F (38% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (5 mph wind)
- Sunrise at 6:42 AM, sunset at 7:28 PM
2 / 6
John Cartwright // Shutterstock

Wednesday, September 10

- High of 74 °F, low of 48 °F (44% humidity)
- Overcast with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (4 mph wind)
- Sunrise at 6:43 AM, sunset at 7:26 PM
3 / 6
liseykina // Shutterstock

Thursday, September 11

- High of 80 °F, low of 50 °F (31% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (6 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:44 AM, sunset at 7:24 PM
4 / 6
New Africa // Shutterstock

Friday, September 12

- High of 80 °F, low of 52 °F (37% humidity)
- Sunny with a 0% chance of rain
- Light breeze (4 mph wind)
- Sunrise at 6:45 AM, sunset at 7:22 PM
5 / 6
Stepan Bessmelnitsin // Shutterstock

Saturday, September 13

- High of 79 °F, low of 55 °F (46% humidity)
- Partly cloudy with a 0% chance of rain
- Light breeze (7 mph wind)
- Sunrise at 6:46 AM, sunset at 7:21 PM
6 / 6
loreanto // Shutterstock

Sunday, September 14

- High of 72 °F, low of 57 °F (58% humidity)
- Overcast with a 99% chance of rain (2 mm of rain)
- Light breeze (4 mph wind)
- Sunrise at 6:47 AM, sunset at 7:19 PM
- Last quarter moon

Trending Now