Observed 9:40 AM EDT at KIPT

South Williamsport, PA weather

Sunny and 37°3°.

Mostly agree

Now 37°3°

Sunny

Wind: Calm; Light through 10 PM
Dew point: 36°2°; Comfortable
Humidity: 93%; Air 37°3°, dew point 36°2° · fog or dew likely
UV index: 1Low; Moderate 12–3 PM · peak 3
Air quality: 31Good; Main pollutant: PM2.5 (fine particles)
Pressure: 30.57 inHg1035 hPa; Rising slowly · +0.02 inHg+0.5 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

10°5° cooler than this time yesterday (45°7° then, 35°2° now)

Good hours for

Above 50°10° today by noon
Below 50°10° tonight after 8 PM
Below freezing tomorrow 7–9 AM (low 32°0°)
Fog Monday 6–7 AM
Fog Monday from 9 AM

This morningUp to 46°8° by 11 AM · Clear
This afternoonUp to 61°16° by 4 PM · Clear
TonightDown to 34°1° by 5 AM · Clear
Tomorrow morningUp to 47°8° by 11 AM · freezing, low 32°0° · Clear
Tomorrow afternoonUp to 63°17° by 4 PM · Clear
Tomorrow nightDown to 37°3° by 4 AM · Clear
Monday morningUp to 40°4° by 9 AM · Partly cloudy

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sat 10a	Sunny	41°5° (likely 41°5° to 47°8°)	41°5°	0%	1 mph2 km/h from W, gusts 3 mph4 km/h	78%	0%	1
Sat 11a	Sunny	46°8° (likely 46°8° to 52°11°)	46°8°	0%	1 mph2 km/h from S, gusts 4 mph7 km/h	67%	0%	2
Sat 12p	Sunny	51°11° (likely 51°11° to 57°14°)	51°11°	0%	1 mph2 km/h from S, gusts 5 mph8 km/h	57%	0%	3
Sat 1p	Sunny	56°13° (likely 55°13° to 60°16°)	56°13°	0%	1 mph2 km/h from S, gusts 7 mph11 km/h	47%	0%	3
Sat 2p	Sunny	59°15° (likely 56°13° to 61°16°)	59°15°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	41%	0%	3
Sat 3p	Sunny	59°15° (likely 57°14° to 61°16°)	59°15°	0%	2 mph3 km/h from S, gusts 7 mph11 km/h	42%	0%	2
Sat 4p	Sunny	61°16° (likely 57°14° to 61°16°)	61°16°	0%	2 mph3 km/h from S, gusts 6 mph10 km/h	39%	0%	1
Sat 5p	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	2 mph3 km/h from SE, gusts 6 mph9 km/h	43%	0%	0
Sat 6p	Clear	56°13° (likely 52°11° to 56°13°)	56°13°	0%	2 mph3 km/h from SE, gusts 7 mph11 km/h	49%	0%	0
Sat 7p	Clear	52°11° (likely 49°9° to 52°11°)	52°11°	0%	1 mph2 km/h from SE, gusts 4 mph6 km/h	57%	0%	0
Sat 8p	Clear	47°8° (likely 47°8° to 48°9°)	47°8°	0%	0 mph0 km/h, gusts 3 mph6 km/h	71%	0%	0
Sat 9p	Clear	45°7° (likely 45°7° to 47°8°)	45°7°	0%	0 mph0 km/h, gusts 3 mph4 km/h	79%	0%	0
Sat 10p	Clear	43°6° (likely 43°6° to 46°8°)	43°6°	0%	0 mph0 km/h, gusts 2 mph2 km/h	82%	0%	0
Sat 11p	Clear	40°4° (likely 40°4° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	0%	0
Sun 12a	Clear	39°4° (likely 39°4° to 45°7°)	39°4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	4%	0
Sun 1a	Clear	38°3° (likely 38°3° to 44°7°)	38°3°	0%	0 mph0 km/h, gusts 1 mph2 km/h	92%	10%	0
Sun 2a	Clear	37°3° (likely 37°3° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	92%	14%	0
Sun 3a	Clear	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	16%	0
Sun 4a	Clear	35°2° (likely 35°2° to 41°5°)	35°2°	0%	0 mph0 km/h, gusts 2 mph3 km/h	96%	15%	0
Sun 5a	Clear	34°1° (likely 34°1° to 41°5°)	34°1°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	14%	0
Sun 6a	Clear	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	13%	0
Sun 7a	Clear	32°0° (likely 32°0° to 39°4°)	32°0°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	10%	0
Sun 8a	Sunny	32°0° (likely 32°0° to 38°3°)	32°0°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	8%	0
Sun 9a	Sunny	35°2° (likely 35°2° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	6%	1
Sun 10a	Sunny	41°5° (likely 41°5° to 49°9°)	41°5°	0%	0 mph0 km/h, gusts 3 mph4 km/h	92%	3%	2
Sun 11a	Sunny	47°8° (likely 47°8° to 53°12°)	47°8°	0%	0 mph0 km/h, gusts 5 mph9 km/h	76%	1%	3
Sun 12p	Sunny	52°11° (likely 52°11° to 56°13°)	52°11°	0%	1 mph2 km/h from SE, gusts 6 mph9 km/h	69%	1%	3
Sun 1p	Sunny	57°14° (likely 57°14° to 59°15°)	57°14°	0%	2 mph3 km/h from SE, gusts 6 mph10 km/h	59%	2%	4
Sun 2p	Sunny	60°16° (likely 58°14° to 61°16°)	60°16°	0%	2 mph3 km/h from S, gusts 8 mph12 km/h	53%	2%	4
Sun 3p	Sunny	61°16° (likely 59°15° to 62°17°)	61°16°	0%	2 mph3 km/h from SE, gusts 9 mph14 km/h	53%	1%	3
Sun 4p	Sunny	63°17° (likely 59°15° to 63°17°)	63°17°	0%	3 mph5 km/h from SE, gusts 9 mph15 km/h	48%	0%	2
Sun 5p	Sunny	61°16° (likely 58°14° to 61°16°)	61°16°	0%	2 mph3 km/h from SE, gusts 9 mph15 km/h	51%	0%	1
Sun 6p	Clear	58°14° (likely 53°12° to 58°14°)	58°14°	0%	1 mph2 km/h from SE, gusts 7 mph12 km/h	59%	0%	0
Sun 7p	Clear	53°12° (likely 49°9° to 53°12°)	53°12°	0%	0 mph0 km/h, gusts 5 mph9 km/h	71%	0%	0
Sun 8p	Clear	48°9° (likely 46°8° to 51°11°)	48°9°	0%	0 mph0 km/h, gusts 4 mph6 km/h	83%	2%	0
Sun 9p	Clear	46°8° (likely 44°7° to 50°10°)	46°8°	0%	0 mph0 km/h, gusts 3 mph5 km/h	89%	37%	0
Sun 10p	Clear	44°7° (likely 42°6° to 49°9°)	44°7°	0%	0 mph0 km/h, gusts 3 mph5 km/h	96%	41%	0
Sun 11p	Clear	42°6° (likely 40°4° to 48°9°)	42°6°	0%	0 mph0 km/h, gusts 2 mph4 km/h	100%	31%	0
Mon 12a	Clear	41°5° (likely 39°4° to 47°8°)	41°5°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	11%	0
Mon 1a	Partly cloudy	40°4° (likely 38°3° to 45°7°)	40°4°	0%	0 mph0 km/h, gusts 1 mph2 km/h	100%	43%	0
Mon 2a	Mostly clear	39°4° (likely 36°2° to 44°7°)	39°4°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	28%	0
Mon 3a	Clear	38°3° (likely 34°1° to 45°7°)	38°3°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	27%	0
Mon 4a	Clear	37°3° (likely 34°1° to 44°7°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	23%	0
Mon 5a	Clear	37°3° (likely 34°1° to 43°6°)	37°3°	0%	0 mph0 km/h, gusts 2 mph3 km/h	100%	27%	0
Mon 6a	Fog	35°2° (likely 34°1° to 42°6°)	35°2°	0%	0 mph0 km/h, gusts 3 mph4 km/h	100%	41%	0
Mon 7a	Clear	34°1° (likely 33°1° to 41°5°)	34°1°	0%	1 mph2 km/h from NW, gusts 2 mph4 km/h	100%	22%	0
Mon 8a	Cloudy	35°2° (likely 33°1° to 41°5°)	35°2°	0%	1 mph2 km/h from NW, gusts 3 mph5 km/h	100%	43%	0
Mon 9a	Fog	40°4° (likely 36°2° to 46°8°)	40°4°	0%	1 mph2 km/h from NW, gusts 4 mph7 km/h	92%	24%	1

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 24. Sunny. High 61°16°, low 32°0°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 61°16°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 61. South wind around 2 mph.
Tonight: Clear, with a low around 32. East wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
57°14°–61°16°
Low, likely
30°−1°–37°3°
Typical high / low
60°16° / 40°4°
Wind
5 mph8 km/h, gusts 14 mph22 km/h
UV peak
4
Tomorrow, Oct 25. Fog. High 63°17°, low 34°1°. Typical 60°16° / 40°4°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 32°0°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 63°17°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Official NWS forecast
Day: Areas of fog between 9am and 10am. Sunny, with a high near 63. Southeast wind 0 to 3 mph.
Night: Areas of fog after 9pm. Mostly clear, with a low around 34. East wind around 1 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
59°15°–63°17°
Low, likely
34°1°–38°3°
Typical high / low
60°16° / 40°4°
Wind
7 mph11 km/h, gusts 12 mph19 km/h
UV peak
4
Monday, Oct 26. Cloudy. High 70°21°, low 40°4°. Typical 59°15° / 39°4°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Fog, 35°2°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 68°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 56°13°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Areas of fog before 10am. Sunny, with a high near 70. West wind 0 to 5 mph.
Night: Mostly clear, with a low around 40.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
65°18°–70°21°
Low, likely
33°1°–40°4°
Typical high / low
59°15° / 39°4°
Wind
7 mph11 km/h, gusts 15 mph24 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 60°16°, low 34°1°. Typical 59°15° / 39°4°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 44°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 60°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 47°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 38°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 60.
Night: Partly cloudy, with a low around 34.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
59°15°–60°16°
Low, likely
34°1°–43°6°
Typical high / low
59°15° / 39°4°
Wind
7 mph11 km/h, gusts 14 mph23 km/h
UV peak
4
Wednesday, Oct 28. Cloudy. High 60°16°, low 40°4°. Typical 58°14° / 38°3°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Cloudy, 39°4°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 43°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60.
Night: Mostly cloudy, with a low around 40.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
56°13°–60°16°
Low, likely
35°2°–40°4°
Typical high / low
58°14° / 38°3°
Wind
8 mph12 km/h, gusts 19 mph30 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 67°19°, low 44°7°. Typical 58°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 67.
Night: Mostly clear, with a low around 44.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–67°19°
Low, likely
39°4°–44°7°
Typical high / low
58°14° / 38°3°
Wind
6 mph9 km/h, gusts 21 mph33 km/h
UV peak
4
Friday, Oct 30. Partly sunny. High 68°20°, low 42°6°. Typical 58°14° / 38°3°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 53°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 42°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 68.
Night: Partly cloudy, with a low around 42.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
65°18°–69°21°
Low, likely
38°3°–47°8°
Typical high / low
58°14° / 38°3°
Wind
9 mph14 km/h, gusts 22 mph36 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 65°18°, low 43°6°. Typical 57°14° / 38°3°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 42°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 46°8°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
59°15°–70°21°
Low, likely
38°3°–46°8°
Typical high / low
57°14° / 38°3°
Wind
9 mph15 km/h, gusts 20 mph32 km/h
UV peak
3
Sunday, Nov 1. Cloudy. High 64°18°, low 47°8°. Typical 57°14° / 37°3°. Rain 0.02 in0.5 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 63°17°
  30% chance
3. Evening
  6 PM–midnight
  Cloudy, 54°12°
  30% chance · 0.01 in0.3 mm
4. Overnight
  midnight–6 AM
  Cloudy, 49°9°
  30% chance · 0.05 in1.4 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
54°12°–69°21°
Low, likely
38°3°–51°11°
Typical high / low
57°14° / 37°3°
Wind
8 mph13 km/h, gusts 14 mph23 km/h
UV peak
3
Monday, Nov 2. Cloudy. High 61°16°, low 49°9°. Typical 56°13° / 37°3°. Rain 0.24 in6.1 mm, 40% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 52°11°
  30% chance · 0.03 in0.7 mm
2. Afternoon
  noon–6 PM
  Drizzle, 62°17°
  40% chance · 0.02 in0.6 mm
3. Evening
  6 PM–midnight
  Drizzle, 53°12°
  40% chance · 0.03 in0.7 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–66°19°
Low, likely
37°3°–55°13°
Typical high / low
56°13° / 37°3°
Wind
9 mph15 km/h, gusts 18 mph29 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 61°, low 32°.
Tomorrow
Dry, high 63°, low 34°.
Monday
Dry, high 70°, low 40°, warming up.
Rest of week
Mostly dry, highs 60–68°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (CTP) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

Rivers

NOAA river gauges within 25 mi

West Branch Susquehanna River at Williamsport

0.5 mi

Below flood stage

Level: 1.4 ft
Flow: 2,870 cfs

Forecast peak 1.3 ft Sat 2 PM

Reading from Sat 8:15 AM · NWS gauge page

Loyalsock Creek at Loyalsockville

8.0 mi

Below flood stage

Level: 1.2 ft
Flow: 182 cfs

Forecast peak 1.2 ft Sat 2 PM

Reading from Sat 8:30 AM · NWS gauge page

West Branch Susquehanna River at Allenwood

10 mi

Below flood stage

Level: 8.0 ft
Flow: 3,400 cfs

Forecast peak 7.9 ft Sat 2 PM

Reading from Sat 8:45 AM · NWS gauge page

West Branch Susquehanna River at Jersey Shore

13 mi

Below flood stage

Level: 2.2 ft
Flow: 2,580 cfs

Forecast peak 2.1 ft Sat 2 PM

Reading from Sat 9 AM · NWS gauge page

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 66% less heating than a typical week.

This week 38Typical 113

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 30
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 23 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 36°F).

Open the windows?

Sun, 2:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

Williamsport Regional Airport · official normals 1991–2020 · records 1895–2026

Oct 24, today vs a typical year

Today’s expected high is about typical for the date.

Last 7 days vs normal

On average 1°0° colder than normal (daily mean temperature).

−6°−4°SunOct 18
±0°MonOct 19
+3°+2°TueOct 20
−1°WedOct 21
+1°±0°ThuOct 22
±0°FriOct 23
—SatOct 24

South Williamsport weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 44 min; Losing 2 min 35 s a day; shortest Dec 21, 1 h 32 min less
Golden hour: 5:35–6:31 PM; Morning 7:12–8:08 AM
Blue hour: 6:31–6:41 PM; Morning 7:01–7:12 AM; first light 7:01 AM

Stars tonight? Fair

Clear 6:41 PM–7:02 AM, but the moon is 99% lit and up.

Moon

Waxing gibbous

97% lit · growing

Today: sets 5:41 AM · rises 5:10 PM
Full moon: Oct 26
New moon: Nov 9

Looking southwest from South Williamsport. The highest point on the skyline is about 2,100 ft, 19 mi away.Skyline from USGS elevation data, heights drawn up to 2× taller. Sky, sun and moon as they are now.

South Williamsport, PA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Monday

Rest of week

What changed since yesterday

Radar

Rivers

West Branch Susquehanna River at Williamsport

Loyalsock Creek at Loyalsockville

West Branch Susquehanna River at Allenwood

West Branch Susquehanna River at Jersey Shore

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 24, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon