What is the weather in Williamsport right now?

Current weather in Williamsport is overcast clouds.

Where can I find the hourly weather forecast for Williamsport?

This page shows hourly weather forecast for Williamsport, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Williamsport updated regularly?

Weather data for Williamsport is updated regularly with the latest available observations and forecasts.

Now · 4:23 AM

Williamsport Weather & Hourly Forecast

United States · Pennsylvania · 17701

57°F

Overcast night

Feels like: 58°F

💧 Humidity 90% 🌡 Pressure 30.06 inHg 💨 Wind 2 mph 👁 Visibility 17.1 mi ☁ Clouds 96% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for Williamsport

Today

5:00 AM

Mostly cloudy night

57° 💧 None 💨 2 mph H 89%30.06 inHg

8:00 AM

Partly cloudy

59° 💧 None 💨 3 mph H 83%30.09 inHg

11:00 AM

Overcast

71° 💧 0.000 in 💨 7 mph H 63%30.06 inHg

2:00 PM

Overcast

76° 💧 None 💨 11 mph H 62%30.03 inHg

5:00 PM

Overcast

76° 💧 0.000 in 💨 8 mph H 66%29.97 inHg

8:00 PM

Overcast night

72° 💧 0.009 in 💨 7 mph H 76%29.97 inHg

11:00 PM

Light rain

70° 💧 0.122 in 💨 6 mph H 90%30.00 inHg

Tomorrow

2:00 AM

Light rain

68° 💧 0.147 in 💨 5 mph H 99%29.94 inHg

5:00 AM

Light thunderstorms

67° 💧 0.079 in 💨 2 mph H 100%29.94 inHg

8:00 AM

Mist

68° 💧 0.006 in 💨 2 mph H 99%29.94 inHg

11:00 AM

Overcast

73° 💧 0.002 in 💨 6 mph H 88%29.94 inHg

2:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 59%29.88 inHg

5:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 57%29.85 inHg

8:00 PM

Mostly cloudy night

73° 💧 0.006 in 💨 5 mph H 81%29.85 inHg

11:00 PM

Overcast night

69° 💧 0.000 in 💨 7 mph H 85%29.91 inHg

Monday

2:00 AM

Overcast night

68° 💧 0.004 in 💨 9 mph H 83%29.94 inHg

Today

5:00 AM

Mostly cloudy night

57° 💧 None 💨 2 mph H 89%30.06 inHg

6:00 AM

Partly cloudy night

57° 💧 None 💨 2 mph H 89%30.06 inHg

7:00 AM

Mostly sunny

56° 💧 None 💨 2 mph H 90%30.09 inHg

8:00 AM

Partly cloudy

59° 💧 None 💨 3 mph H 83%30.09 inHg

9:00 AM

Mostly cloudy

64° 💧 None 💨 3 mph H 73%30.09 inHg

10:00 AM

Overcast

68° 💧 None 💨 6 mph H 65%30.09 inHg

11:00 AM

Overcast

71° 💧 None 💨 7 mph H 63%30.06 inHg

12:00 PM

Overcast

73° 💧 None 💨 8 mph H 63%30.06 inHg

1:00 PM

Overcast

73° 💧 0.000 in 💨 9 mph H 63%30.06 inHg

2:00 PM

Overcast

76° 💧 None 💨 11 mph H 62%30.03 inHg

3:00 PM

Mostly cloudy

75° 💧 None 💨 10 mph H 66%30.00 inHg

4:00 PM

Overcast

76° 💧 None 💨 11 mph H 64%30.00 inHg

5:00 PM

Overcast

76° 💧 None 💨 8 mph H 66%29.97 inHg

6:00 PM

Overcast

75° 💧 None 💨 7 mph H 69%29.97 inHg

7:00 PM

Overcast

73° 💧 0.000 in 💨 5 mph H 73%29.97 inHg

8:00 PM

Overcast night

72° 💧 0.003 in 💨 7 mph H 76%29.97 inHg

9:00 PM

Overcast night

73° 💧 None 💨 7 mph H 78%29.97 inHg

10:00 PM

Light rain

71° 💧 0.005 in 💨 7 mph H 82%30.00 inHg

11:00 PM

Light rain

70° 💧 0.023 in 💨 6 mph H 90%30.00 inHg

Tomorrow

12:00 AM

Light rain

68° 💧 0.036 in 💨 7 mph H 96%30.00 inHg

1:00 AM

Light rain

68° 💧 0.063 in 💨 5 mph H 98%29.97 inHg

2:00 AM

Light rain

68° 💧 0.091 in 💨 5 mph H 99%29.94 inHg

3:00 AM

Light rain

68° 💧 0.035 in 💨 5 mph H 99%29.94 inHg

4:00 AM

Light rain

68° 💧 0.021 in 💨 3 mph H 99%29.94 inHg

5:00 AM

Light thunderstorms

67° 💧 0.039 in 💨 2 mph H 100%29.94 inHg

6:00 AM

Light rain

67° 💧 0.033 in 💨 3 mph H 100%29.91 inHg

7:00 AM

Light rain

67° 💧 0.007 in 💨 2 mph H 100%29.91 inHg

8:00 AM

Mist

68° 💧 0.001 in 💨 2 mph H 99%29.94 inHg

9:00 AM

Mist

69° 💧 0.003 in 💨 2 mph H 98%29.94 inHg

10:00 AM

Overcast

71° 💧 0.002 in 💨 5 mph H 95%29.94 inHg

11:00 AM

Overcast

73° 💧 None 💨 6 mph H 88%29.94 inHg

12:00 PM

Partly cloudy

76° 💧 0.000 in 💨 5 mph H 78%29.91 inHg

1:00 PM

Mostly sunny

79° 💧 0.002 in 💨 6 mph H 67%29.91 inHg

2:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 59%29.88 inHg

3:00 PM

Partly cloudy

83° 💧 None 💨 7 mph H 55%29.85 inHg

4:00 PM

Mostly sunny

82° 💧 None 💨 8 mph H 55%29.85 inHg

5:00 PM

Mostly sunny

82° 💧 None 💨 7 mph H 57%29.85 inHg

6:00 PM

Sunny

80° 💧 None 💨 4 mph H 67%29.83 inHg

7:00 PM

Mostly sunny

76° 💧 None 💨 3 mph H 74%29.83 inHg

8:00 PM

Mostly cloudy night

73° 💧 None 💨 5 mph H 81%29.85 inHg

9:00 PM

Light rain

73° 💧 0.005 in 💨 9 mph H 80%29.91 inHg

10:00 PM

Overcast night

72° 💧 0.001 in 💨 8 mph H 81%29.91 inHg

11:00 PM

Overcast night

69° 💧 0.000 in 💨 7 mph H 85%29.91 inHg

Monday

12:00 AM

Overcast night

68° 💧 0.000 in 💨 6 mph H 86%29.91 inHg

1:00 AM

Overcast night

68° 💧 None 💨 6 mph H 87%29.91 inHg

2:00 AM

Overcast night

68° 💧 None 💨 9 mph H 83%29.94 inHg

3:00 AM

Overcast night

68° 💧 0.004 in 💨 8 mph H 80%29.94 inHg

4:00 AM

Clear night

66° 💧 None 💨 8 mph H 82%29.94 inHg

5:00 AM

Clear night

64° 💧 None 💨 8 mph H 88%29.97 inHg

6:00 AM

Clear night

62° 💧 None 💨 7 mph H 88%30.00 inHg

7:00 AM

Sunny

61° 💧 None 💨 8 mph H 88%30.03 inHg

8:00 AM

Sunny

61° 💧 None 💨 9 mph H 83%30.06 inHg

9:00 AM

Sunny

63° 💧 None 💨 9 mph H 74%30.09 inHg

10:00 AM

Sunny

64° 💧 None 💨 9 mph H 66%30.12 inHg

11:00 AM

Mostly sunny

66° 💧 None 💨 10 mph H 59%30.12 inHg

12:00 PM

Mostly sunny

68° 💧 None 💨 11 mph H 53%30.12 inHg

1:00 PM

Partly cloudy

69° 💧 None 💨 11 mph H 47%30.12 inHg

2:00 PM

Mostly cloudy

69° 💧 None 💨 10 mph H 46%30.12 inHg

3:00 PM

Mostly cloudy

69° 💧 None 💨 10 mph H 44%30.12 inHg

4:00 PM

Mostly cloudy

69° 💧 None 💨 10 mph H 46%30.12 inHg

5:00 PM

Sunny

69° 💧 None 💨 9 mph H 47%30.12 inHg

6:00 PM

Sunny

68° 💧 None 💨 6 mph H 50%30.15 inHg

7:00 PM

Sunny

64° 💧 None 💨 6 mph H 59%30.18 inHg

8:00 PM

Clear night

61° 💧 None 💨 5 mph H 67%30.21 inHg

11:00 PM

Clear night

55° 💧 None 💨 4 mph H 79%30.27 inHg

Tuesday

2:00 AM

Clear night

52° 💧 None 💨 1 mph H 86%30.30 inHg

5:00 AM

Partly cloudy night

49° 💧 None 💨 1 mph H 97%30.33 inHg

8:00 AM

Mostly cloudy

50° 💧 None 💨 1 mph H 94%30.36 inHg

11:00 AM

Partly cloudy

63° 💧 None 💨 6 mph H 60%30.39 inHg

2:00 PM

Partly cloudy

69° 💧 None 💨 7 mph H 47%30.33 inHg

5:00 PM

Sunny

70° 💧 None 💨 8 mph H 48%30.30 inHg

8:00 PM

Partly cloudy night

62° 💧 None 💨 4 mph H 67%30.30 inHg

11:00 PM

Mostly clear night

59° 💧 None 💨 3 mph H 79%30.33 inHg

Wednesday

2:00 AM

Clear night

56° 💧 None 💨 3 mph H 87%30.33 inHg

5:00 AM

Clear night

54° 💧 None 💨 3 mph H 91%30.33 inHg

8:00 AM

Sunny

57° 💧 None 💨 3 mph H 88%30.39 inHg

11:00 AM

Sunny

69° 💧 None 💨 4 mph H 67%30.39 inHg

2:00 PM

Sunny

77° 💧 None 💨 5 mph H 60%30.33 inHg

5:00 PM

Sunny

79° 💧 None 💨 6 mph H 60%30.30 inHg

8:00 PM

Clear night

70° 💧 None 💨 3 mph H 81%30.30 inHg

11:00 PM

Clear night

67° 💧 None 💨 1 mph H 88%30.33 inHg

Thursday

2:00 AM

Clear night

64° 💧 None 💨 1 mph H 90%30.30 inHg

5:00 AM

Clear night

62° 💧 None 💨 2 mph H 96%30.33 inHg

8:00 AM

Sunny

63° 💧 None 💨 2 mph H 92%30.33 inHg

11:00 AM

Sunny

75° 💧 None 💨 2 mph H 67%30.30 inHg

2:00 PM

Sunny

83° 💧 None 💨 5 mph H 55%30.24 inHg

5:00 PM

Mostly sunny

85° 💧 None 💨 6 mph H 48%30.18 inHg

8:00 PM

Clear night

74° 💧 None 💨 3 mph H 74%30.18 inHg

Friday

2:00 AM

Clear night

65° 💧 None 💨 2 mph H 92%30.18 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 1 mph H 92%30.18 inHg

2:00 PM

Sunny

87° 💧 None 💨 4 mph H 53%30.09 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 1 mph H 98%30.06 inHg

Saturday

2:00 AM

Overcast night

69° 💧 None 💨 1 mph H 99%30.03 inHg

8:00 AM

Overcast

68° 💧 None 💨 0 mph H 100%29.97 inHg

2:00 PM

Mostly sunny

88° 💧 None 💨 5 mph H 46%29.85 inHg

8:00 PM

Clear night

78° 💧 None 💨 3 mph H 63%29.80 inHg

Sunday

2:00 AM

Mostly cloudy night

70° 💧 None 💨 1 mph H 78%29.77 inHg

8:00 AM

Partly cloudy

67° 💧 None 💨 0 mph H 89%29.74 inHg

2:00 PM

Partly cloudy

76° 💧 None 💨 12 mph H 58%29.74 inHg

8:00 PM

Mostly clear night

66° 💧 None 💨 8 mph H 63%29.85 inHg

Monday

2:00 AM

Clear night

58° 💧 None 💨 8 mph H 81%29.94 inHg

8:00 AM

Overcast

54° 💧 None 💨 7 mph H 70%30.09 inHg

2:00 PM

Partly cloudy

64° 💧 None 💨 7 mph H 46%30.09 inHg

8:00 PM

Overcast night

57° 💧 None 💨 6 mph H 61%30.12 inHg

Tuesday

2:00 AM

Overcast night

50° 💧 None 💨 3 mph H 80%30.21 inHg

8:00 AM

Overcast

52° 💧 None 💨 3 mph H 77%30.24 inHg

2:00 PM

Overcast

64° 💧 None 💨 6 mph H 62%30.18 inHg

8:00 PM

Overcast night

60° 💧 None 💨 4 mph H 76%30.18 inHg

Wednesday

2:00 AM

Overcast night

54° 💧 None 💨 2 mph H 92%30.21 inHg

8:00 AM

Overcast

54° 💧 None 💨 1 mph H 95%30.27 inHg

2:00 PM

Overcast

68° 💧 None 💨 3 mph H 52%30.24 inHg

8:00 PM

Overcast night

63° 💧 None 💨 0 mph H 72%30.27 inHg

Thursday

2:00 AM

Overcast night

59° 💧 None 💨 2 mph H 87%30.27 inHg

8:00 AM

Overcast

58° 💧 None 💨 3 mph H 84%30.33 inHg

2:00 PM

Overcast

71° 💧 None 💨 4 mph H 51%30.30 inHg

8:00 PM

Overcast night

64° 💧 None 💨 4 mph H 60%30.30 inHg

Friday

2:00 AM

Mostly clear night

55° 💧 None 💨 2 mph H 89%30.33 inHg

8:00 AM

Partly cloudy

54° 💧 None 💨 2 mph H 93%30.33 inHg

2:00 PM

Partly cloudy

72° 💧 None 💨 4 mph H 42%30.24 inHg

8:00 PM

Mostly cloudy night

64° 💧 None 💨 3 mph H 54%30.21 inHg

Saturday

2:00 AM

Mostly cloudy night

54° 💧 None 💨 2 mph H 86%30.21 inHg

8:00 AM

Overcast

53° 💧 None 💨 1 mph H 91%30.18 inHg

2:00 PM

Sunny

71° 💧 None 💨 4 mph H 41%30.03 inHg

8:00 PM

Clear night

62° 💧 None 💨 2 mph H 61%29.94 inHg

In Williamsport and, more broadly, across the state of Pennsylvania: The evening will be mostly sunny with a few clouds drifting across the sky. Temperatures will remain mild to warm, ranging from 71 to 76 degrees Fahrenheit. Light northeast winds at around 3 mph will prevail, with occasional gusts up to 4 mph. No precipitation is expected during the next few hours, making for a calm and pleasant evening. Conditions will be suitable for outdoor activities, and temperatures are likely to stay steady through the night.

15-Day Weather Outlook for Williamsport

TomorrowTomorrow

Light thunderstorms 83°/67° 💧 None 💨 8 mph

Monday, Sep 14Mon Sep 14

Mostly cloudy 73°/61° 💧 None 💨 11 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 68°/49° 💧 None 💨 6 mph

Wednesday, Sep 16Wed Sep 16

Partly cloudy 77°/54° 💧 None 💨 7 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 77°/61° 💧 0.020 in 💨 3 mph

Friday, Sep 18Fri Sep 18

Partly cloudy 76°/57° 💧 0.459 in 💨 11 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 72°/51° 💧 None 💨 6 mph

Sunday, Sep 20Sun Sep 20

Partly cloudy 71°/61° 💧 0.001 in 💨 4 mph

Monday, Sep 21Mon Sep 21

Light rain 70°/64° 💧 0.011 in 💨 3 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 75°/63° 💧 0.014 in 💨 7 mph

Wednesday, Sep 23Wed Sep 23

Heavy rain 69°/65° 💧 2.017 in 💨 11 mph

Thursday, Sep 24Thu Sep 24

Heavy rain 69°/60° 💧 1.233 in 💨 8 mph

Friday, Sep 25Fri Sep 25

Overcast 71°/56° 💧 0.002 in 💨 6 mph

Saturday, Sep 26Sat Sep 26

Overcast 67°/54° 💧 0.001 in 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Williamsport

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Williamsport

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 5:00 AM

PM2.5 Fine particles Good 7,2µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 9,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Good 15,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 5,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Williamsport

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 2,8Low 😊Good

Tomorrow UV 6,1High 🙂Fair

Monday UV 6,1High 🙂Fair

Tuesday UV 6,0High 🙂Fair

Wednesday UV 6,0High 🙂Fair

Thursday UV 7,0High —Unavailable

Friday UV 7,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,3 9:00 AMUV 1,0 10:00 AMUV 1,4 11:00 AMUV 2,3 12:00 PMUV 1,9 1:00 PMUV 2,8 2:00 PMUV 0,7 3:00 PMUV 0,3 4:00 PMUV 0,1 5:00 PMUV 0,1 6:00 PMUV 0,0

Today's weather health advice Open today's recommendations.

Low UV risk

UV radiation will be low, although basic protection is still advisable during prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Williamsport

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · WILLIAMSPORT, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

46/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 73% Real hourly forecast for the best viewing hour.

☾ Moonlight 0% New Moon · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 88° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

Explore current conditions and forecasts for other locations.

Forecast data for Williamsport were last refreshed today at 4:23 AM. The current forecast period extends through 14/09/2026 at 2:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.