What is the weather in South Williamsport right now?

Current weather in South Williamsport is few clouds.

Where can I find the hourly weather forecast for South Williamsport?

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

Is the weather forecast for South Williamsport updated regularly?

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

Now · 12:03 AM

South Williamsport Weather & Hourly Forecast

United States · Pennsylvania · 17702

59°F

Mostly clear night

Feels like: 60°F

💧 Humidity 87% 🌡 Pressure 30.24 inHg 💨 Wind 1 mph 👁 Visibility 6.8 mi ☁ Clouds 32% ☀️ UV index 0.0 · Low 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for South Williamsport

Today

1:00 AM

Partly cloudy night

58° 💧 None 💨 1 mph H 90%30.24 inHg

4:00 AM

Fog at night

56° 💧 None 💨 0 mph H 92%30.24 inHg

7:00 AM

Fog

55° 💧 None 💨 1 mph H 95%30.27 inHg

10:00 AM

Mostly sunny

67° 💧 None 💨 0 mph H 71%30.27 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 2 mph H 50%30.24 inHg

4:00 PM

Mostly cloudy

78° 💧 None 💨 5 mph H 49%30.21 inHg

7:00 PM

Mostly cloudy

71° 💧 None 💨 2 mph H 70%30.21 inHg

10:00 PM

Mostly cloudy night

66° 💧 None 💨 2 mph H 76%30.21 inHg

Tomorrow

1:00 AM

Mostly cloudy night

62° 💧 None 💨 2 mph H 87%30.21 inHg

4:00 AM

Overcast night

62° 💧 None 💨 2 mph H 90%30.18 inHg

7:00 AM

Mostly cloudy

62° 💧 None 💨 2 mph H 93%30.18 inHg

10:00 AM

Partly cloudy

72° 💧 0.007 in 💨 2 mph H 73%30.15 inHg

1:00 PM

Mostly sunny

81° 💧 0.053 in 💨 6 mph H 58%30.09 inHg

4:00 PM

Light rain

81° 💧 0.039 in 💨 6 mph H 70%30.00 inHg

7:00 PM

Mostly cloudy

79° 💧 0.001 in 💨 4 mph H 69%29.94 inHg

10:00 PM

Clear night

73° 💧 None 💨 5 mph H 80%29.94 inHg

Today

1:00 AM

Partly cloudy night

58° 💧 None 💨 1 mph H 90%30.24 inHg

2:00 AM

Fog at night

57° 💧 None 💨 1 mph H 91%30.24 inHg

3:00 AM

Fog at night

57° 💧 None 💨 1 mph H 91%30.24 inHg

4:00 AM

Fog at night

56° 💧 None 💨 0 mph H 92%30.24 inHg

5:00 AM

Fog at night

56° 💧 None 💨 1 mph H 94%30.27 inHg

6:00 AM

Fog at night

55° 💧 None 💨 1 mph H 95%30.27 inHg

7:00 AM

Fog

55° 💧 None 💨 1 mph H 95%30.27 inHg

8:00 AM

Fog

57° 💧 None 💨 2 mph H 92%30.30 inHg

9:00 AM

Mostly cloudy

61° 💧 None 💨 1 mph H 84%30.30 inHg

10:00 AM

Mostly sunny

67° 💧 None 💨 0 mph H 71%30.27 inHg

11:00 AM

Mostly cloudy

71° 💧 None 💨 1 mph H 60%30.27 inHg

12:00 PM

Partly cloudy

74° 💧 None 💨 2 mph H 53%30.24 inHg

1:00 PM

Mostly sunny

76° 💧 None 💨 2 mph H 50%30.24 inHg

2:00 PM

Partly cloudy

78° 💧 None 💨 3 mph H 49%30.21 inHg

3:00 PM

Partly cloudy

79° 💧 None 💨 4 mph H 49%30.21 inHg

4:00 PM

Mostly cloudy

78° 💧 None 💨 5 mph H 49%30.21 inHg

5:00 PM

Overcast

77° 💧 None 💨 6 mph H 51%30.21 inHg

6:00 PM

Overcast

75° 💧 None 💨 6 mph H 57%30.21 inHg

7:00 PM

Mostly cloudy

71° 💧 None 💨 2 mph H 70%30.21 inHg

8:00 PM

Partly cloudy night

69° 💧 None 💨 3 mph H 72%30.21 inHg

9:00 PM

Partly cloudy night

68° 💧 None 💨 3 mph H 74%30.21 inHg

10:00 PM

Mostly cloudy night

66° 💧 None 💨 2 mph H 76%30.21 inHg

11:00 PM

Mostly cloudy night

65° 💧 None 💨 2 mph H 79%30.21 inHg

Tomorrow

12:00 AM

Partly cloudy night

64° 💧 None 💨 2 mph H 83%30.21 inHg

1:00 AM

Mostly cloudy night

62° 💧 None 💨 2 mph H 87%30.21 inHg

2:00 AM

Overcast night

62° 💧 None 💨 2 mph H 89%30.21 inHg

3:00 AM

Overcast night

61° 💧 None 💨 2 mph H 90%30.18 inHg

4:00 AM

Overcast night

62° 💧 None 💨 2 mph H 90%30.18 inHg

5:00 AM

Overcast night

62° 💧 None 💨 2 mph H 90%30.18 inHg

6:00 AM

Mostly cloudy night

62° 💧 None 💨 2 mph H 92%30.18 inHg

7:00 AM

Mostly cloudy

62° 💧 None 💨 2 mph H 93%30.18 inHg

8:00 AM

Mostly cloudy

64° 💧 None 💨 2 mph H 88%30.18 inHg

9:00 AM

Partly cloudy

68° 💧 None 💨 2 mph H 81%30.18 inHg

10:00 AM

Partly cloudy

72° 💧 0.004 in 💨 2 mph H 73%30.15 inHg

11:00 AM

Mostly sunny

75° 💧 0.003 in 💨 4 mph H 70%30.15 inHg

12:00 PM

Mostly cloudy

78° 💧 0.000 in 💨 5 mph H 64%30.12 inHg

1:00 PM

Mostly sunny

81° 💧 0.002 in 💨 6 mph H 58%30.09 inHg

2:00 PM

Partly cloudy

83° 💧 0.002 in 💨 6 mph H 53%30.06 inHg

3:00 PM

Light rain

82° 💧 0.049 in 💨 8 mph H 62%30.03 inHg

4:00 PM

Light rain

81° 💧 0.035 in 💨 6 mph H 70%30.00 inHg

5:00 PM

Light rain

83° 💧 0.005 in 💨 6 mph H 64%29.97 inHg

6:00 PM

Mostly cloudy

82° 💧 0.000 in 💨 5 mph H 63%29.97 inHg

7:00 PM

Mostly cloudy

79° 💧 0.001 in 💨 4 mph H 69%29.94 inHg

8:00 PM

Clear night

75° 💧 0.000 in 💨 4 mph H 76%29.94 inHg

9:00 PM

Clear night

74° 💧 None 💨 4 mph H 79%29.94 inHg

10:00 PM

Clear night

73° 💧 None 💨 5 mph H 80%29.94 inHg

11:00 PM

Clear night

74° 💧 None 💨 6 mph H 79%29.94 inHg

Thursday

12:00 AM

Mostly cloudy night

73° 💧 None 💨 5 mph H 79%29.94 inHg

1:00 AM

Mostly cloudy night

73° 💧 None 💨 4 mph H 80%29.91 inHg

2:00 AM

Mostly cloudy night

72° 💧 None 💨 3 mph H 81%29.91 inHg

3:00 AM

Mostly cloudy night

71° 💧 0.000 in 💨 3 mph H 82%29.91 inHg

4:00 AM

Light rain

71° 💧 0.005 in 💨 4 mph H 83%29.91 inHg

5:00 AM

Light rain

71° 💧 0.017 in 💨 2 mph H 87%29.91 inHg

6:00 AM

Light rain

70° 💧 0.008 in 💨 3 mph H 90%29.91 inHg

7:00 AM

Light rain

70° 💧 0.015 in 💨 3 mph H 94%29.91 inHg

8:00 AM

Light rain

70° 💧 0.016 in 💨 3 mph H 96%29.94 inHg

5:00 PM

Light rain

75° 💧 None 💨 3 mph H 82%29.83 inHg

8:00 PM

Light rain

70° 💧 None 💨 2 mph H 95%29.83 inHg

11:00 PM

Mostly clear night

68° 💧 None 💨 4 mph H 95%29.88 inHg

Friday

2:00 AM

Clear night

64° 💧 None 💨 5 mph H 96%29.88 inHg

5:00 AM

Mostly clear night

62° 💧 None 💨 5 mph H 96%29.94 inHg

8:00 AM

Sunny

61° 💧 None 💨 6 mph H 93%30.00 inHg

11:00 AM

Sunny

69° 💧 None 💨 7 mph H 48%30.03 inHg

2:00 PM

Sunny

74° 💧 None 💨 6 mph H 35%30.00 inHg

5:00 PM

Sunny

75° 💧 None 💨 5 mph H 34%29.97 inHg

8:00 PM

Clear night

65° 💧 None 💨 3 mph H 63%30.00 inHg

11:00 PM

Clear night

59° 💧 None 💨 2 mph H 85%30.09 inHg

Saturday

2:00 AM

Clear night

56° 💧 None 💨 2 mph H 89%30.09 inHg

5:00 AM

Partly cloudy night

54° 💧 None 💨 1 mph H 95%30.12 inHg

8:00 AM

Partly cloudy

55° 💧 None 💨 1 mph H 94%30.15 inHg

11:00 AM

Mostly sunny

70° 💧 None 💨 6 mph H 58%30.15 inHg

2:00 PM

Sunny

77° 💧 None 💨 8 mph H 49%30.12 inHg

5:00 PM

Mostly sunny

77° 💧 None 💨 9 mph H 54%30.09 inHg

8:00 PM

Mostly clear night

70° 💧 None 💨 4 mph H 72%30.09 inHg

11:00 PM

Partly cloudy night

69° 💧 None 💨 4 mph H 72%30.12 inHg

Sunday

2:00 AM

Light rain

65° 💧 None 💨 5 mph H 89%30.15 inHg

5:00 AM

Partly cloudy night

64° 💧 None 💨 4 mph H 97%30.12 inHg

8:00 AM

Overcast

65° 💧 None 💨 6 mph H 97%30.15 inHg

11:00 AM

Overcast

69° 💧 None 💨 6 mph H 89%30.15 inHg

2:00 PM

Light rain

76° 💧 None 💨 5 mph H 76%30.09 inHg

8:00 PM

Overcast night

76° 💧 None 💨 3 mph H 76%30.12 inHg

Monday

2:00 AM

Clear night

71° 💧 None 💨 3 mph H 90%30.09 inHg

8:00 AM

Mostly sunny

65° 💧 None 💨 1 mph H 97%30.15 inHg

2:00 PM

Overcast

66° 💧 None 💨 2 mph H 96%30.21 inHg

8:00 PM

Mostly cloudy night

79° 💧 None 💨 5 mph H 70%30.18 inHg

Tuesday

2:00 AM

Clear night

73° 💧 None 💨 3 mph H 84%30.12 inHg

8:00 AM

Overcast

70° 💧 None 💨 6 mph H 93%30.18 inHg

2:00 PM

Light rain

70° 💧 None 💨 7 mph H 99%30.18 inHg

8:00 PM

Light rain

79° 💧 None 💨 11 mph H 79%30.12 inHg

Wednesday

2:00 AM

Light rain

72° 💧 None 💨 2 mph H 98%30.09 inHg

8:00 AM

Light rain

69° 💧 None 💨 2 mph H 100%30.12 inHg

2:00 PM

Moderate rain

64° 💧 None 💨 7 mph H 97%30.18 inHg

8:00 PM

Overcast night

72° 💧 None 💨 5 mph H 68%30.18 inHg

Thursday

2:00 AM

Mostly cloudy night

64° 💧 None 💨 6 mph H 74%30.21 inHg

8:00 AM

Sunny

56° 💧 None 💨 4 mph H 87%30.27 inHg

2:00 PM

Sunny

57° 💧 None 💨 4 mph H 89%30.36 inHg

8:00 PM

Mostly clear night

71° 💧 None 💨 6 mph H 46%30.33 inHg

Friday

2:00 AM

Clear night

61° 💧 None 💨 4 mph H 73%30.27 inHg

8:00 AM

Partly cloudy

54° 💧 None 💨 1 mph H 92%30.24 inHg

2:00 PM

Overcast

55° 💧 None 💨 1 mph H 88%30.21 inHg

8:00 PM

Overcast night

67° 💧 None 💨 2 mph H 69%30.09 inHg

Saturday

2:00 AM

Mostly cloudy night

62° 💧 None 💨 3 mph H 83%30.00 inHg

8:00 AM

Mostly sunny

58° 💧 None 💨 4 mph H 92%29.97 inHg

2:00 PM

Overcast

62° 💧 None 💨 5 mph H 83%30.00 inHg

8:00 PM

Mostly clear night

68° 💧 None 💨 7 mph H 53%30.00 inHg

Sunday

2:00 AM

Clear night

58° 💧 None 💨 6 mph H 68%30.00 inHg

8:00 AM

Sunny

49° 💧 None 💨 2 mph H 84%30.09 inHg

2:00 PM

Overcast

51° 💧 None 💨 1 mph H 79%30.09 inHg

8:00 PM

Mostly clear night

66° 💧 None 💨 3 mph H 56%30.03 inHg

Monday

2:00 AM

Clear night

59° 💧 None 💨 2 mph H 82%30.00 inHg

8:00 AM

Mostly sunny

52° 💧 None 💨 2 mph H 97%30.03 inHg

2:00 PM

Partly cloudy

51° 💧 None 💨 3 mph H 96%30.09 inHg

8:00 PM

Mostly clear night

72° 💧 None 💨 6 mph H 51%30.09 inHg

Tuesday

2:00 AM

Mostly cloudy night

62° 💧 None 💨 8 mph H 66%30.12 inHg

8:00 AM

Overcast

54° 💧 None 💨 2 mph H 87%30.21 inHg

2:00 PM

Overcast

55° 💧 None 💨 4 mph H 84%30.21 inHg

In South Williamsport and, more broadly, across the state of Pennsylvania: Clear skies continue into the evening, with temperatures remaining mild, ranging from 66 to 73 degrees Fahrenheit. Winds will be light, coming from the northeast at up to 2 mph, with gusts reaching 2 mph. No precipitation is expected during the upcoming hours, so conditions will be dry and comfortable. It should be a calm and clear evening, making it suitable for outdoor activities. Temperatures will gradually stay within the mild range as the night progresses.

15-Day Weather Outlook for South Williamsport

TomorrowTomorrow

Partly cloudy 83°/61° 💧 None 💨 8 mph

Thursday, Sep 10Thu Sep 10

Light rain 75°/70° 💧 0.073 in 💨 6 mph

Friday, Sep 11Fri Sep 11

Light rain 75°/61° 💧 0.035 in 💨 7 mph

Saturday, Sep 12Sat Sep 12

Partly cloudy 77°/54° 💧 0.000 in 💨 9 mph

Sunday, Sep 13Sun Sep 13

Light rain 76°/64° 💧 0.085 in 💨 6 mph

Monday, Sep 14Mon Sep 14

Overcast 76°/65° 💧 0.889 in 💨 3 mph

Tuesday, Sep 15Tue Sep 15

Light rain 79°/70° 💧 0.156 in 💨 7 mph

Wednesday, Sep 16Wed Sep 16

Moderate rain 79°/64° 💧 0.739 in 💨 11 mph

Thursday, Sep 17Thu Sep 17

Overcast 72°/56° 💧 0.131 in 💨 6 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 71°/54° 💧 None 💨 6 mph

Saturday, Sep 19Sat Sep 19

Mostly sunny 67°/58° 💧 0.002 in 💨 5 mph

Sunday, Sep 20Sun Sep 20

Mostly sunny 68°/49° 💧 None 💨 7 mph

Monday, Sep 21Mon Sep 21

Mostly sunny 66°/51° 💧 0.001 in 💨 3 mph

Tuesday, Sep 22Tue Sep 22

Mostly sunny 72°/54° 💧 None 💨 8 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in South Williamsport

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for South Williamsport

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 1:00 AM

PM2.5 Fine particles Good 2,3µg/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 3,9µg/m³

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

O₃ Ozone Good 23,7µg/m³

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

NO₂ Nitrogen dioxide Good 7,7µg/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 South 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 6,8High 😊Good

Tomorrow UV 6,1High 🙂Fair

Thursday UV 4,4Moderate 🙂Fair

Friday UV 6,5High 🙂Fair

Saturday UV 6,0High —Unavailable

Sunday UV 6,0High —Unavailable

Monday UV 5,0Moderate —Unavailable

Hourly UV index today

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

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

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

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 South Williamsport

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SOUTH WILLIAMSPORT, PENNSYLVANIA

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

40/100Best-hour score

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

☁ Cloud cover 50% Real hourly forecast for the best viewing hour.

☾ Moonlight 14% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 43° 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.

Pittsburg US · California · 76,257 residents Tyendinaga Mohawk Territory CA · Ontario · 2,535 residents Bedford GB · England · 109,667 residents Moolort AU · Victoria · 44 residents Alma US · Michigan · 9,396 residents Rockwall US · Texas · 51,168 residents Mole Creek AU · Tasmania · 528 residents Fort Worth US · Texas · 963,194 residents Bonny Doon US · California · 3,149 residents Cheney US · Washington · 12,804 residents Hercules US · California · 26,302 residents Morda GB · England · 1,975 residents Duingal AU · Queensland · 70 residents Longton GB · England · 10,910 residents Kennerdell US · Pennsylvania · 221 residents Saucier US · Mississippi · 1,014 residents

Forecast data for South Williamsport were last refreshed today at 12:03 AM. The current forecast period extends through 09/09/2026 at 10:00 PM. 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.