Weather tomorrow: Williamsport

Forecast for tomorrow, 28 September: fog. The daily air temperature range is 12 to 16 °C. Chance of precipitation tomorrow according to the daily forecast: 52%. Forecast precipitation amount: 0.3 mm. Wind from the northwest at 2.8 m/s.

monday 28 september

Fog

Fog, Precipitation probability 52%, Sunrise 07:01, Sunset 18:54, 28.09.2026

+16°

+12°

Sunset 18:54

G/m activity 2

Precipitation probability 52%

Precipitation 0.3 mm

Wind 2.8 m/s

Pressure 993.3 hPa

Index UV 2

Humidity 90%

Sunrise 07:01

Moon Waning Gibbous

Sunrise 07:01

Sunset 18:54

G/m activity 2

Moon Waning Gibbous

Overcast
night
+12°
Cloudy and light rain
morning
+13°
Overcast and showers
day
+14°
Overcast and showers
evening
+14°
Time
Description
Temperature
Precipitation probability
Precipitation
Wind

00:00

Overcast

12°

32 %
-

NW

2.2 m/s

01:00

Overcast

12°

32 %
-

NW

2.2 m/s

02:00

Overcast and showers

12°

34 %
-

NW

1.9 m/s

03:00

Cloudy and light rain

12°

62 %
0.3 mm

NW

1.7 m/s

04:00

Fog

12°

50 %
0.1 mm

NW

1.7 m/s

05:00

Cloudy and light rain

12°

63 %
0.3 mm

NW

1.9 m/s

06:00

Cloudy and light rain

13°

56 %
0.2 mm

NW

1.7 m/s

07:00

Fog

12°

47 %
-

NW

1.7 m/s

08:00

Fog

12°

44 %
-

NW

1.4 m/s

09:00

Fog

13°

39 %
-

NW

1.4 m/s

10:00

Fog

13°

50 %
0.1 mm

NW

1.4 m/s

11:00

Fog

13°

39 %
-

NW

1.4 m/s

12:00

Overcast and showers

14°

33 %
-

N

1.7 m/s

13:00

Overcast and showers

14°

36 %
-

N

1.7 m/s

14:00

Overcast and showers

14°

27 %
-

N

1.7 m/s

15:00

Overcast and showers

15°

27 %
-

N

1.9 m/s

16:00

Overcast and showers

14°

29 %
-

N

1.7 m/s

17:00

Overcast

14°

29 %
-

N

1.4 m/s

18:00

Overcast and showers

14°

30 %
-

N

1.4 m/s

19:00

Overcast and showers

14°

31 %
-

NW

1.4 m/s

20:00

Overcast

13°

29 %
-

NW

1.4 m/s

21:00

Overcast

13°

28 %
-

NW

1.4 m/s

22:00

Overcast

13°

31 %
-

NW

1.4 m/s

23:00

Overcast and showers

13°

33 %
-

NW

1.1 m/s

What is the atmospheric pressure in Williamsport tomorrow?

Pressure adjusted for location elevation. Location elevation: 161 m relative to sea level

Forecast for 28.09.2026 · Local time

Pressure: 989.3–995.9 hPa.

Minimum: 989.3 hPa01:00–03:00

Maximum: 995.9 hPa22:00–23:00

Largest change over 3 hours: −1.3 hPa · 00:00–03:00
First of 15 intervals with the same change magnitude shown.

hPa · Change over the previous 3 hours

990.6 00:00 —
989.3 01:00 —
989.3 02:00 —
989.3 03:00 −1.3
990.6 04:00 +1.3
990.6 05:00 +1.3
990.6 06:00 +1.3
991.9 07:00 +1.3
991.9 08:00 +1.3
991.9 09:00 +1.3
993.3 10:00 +1.3
993.3 11:00 +1.3
993.3 12:00 +1.3
993.3 13:00 0
993.3 14:00 0
993.3 15:00 0
993.3 16:00 0
993.3 17:00 0
993.3 18:00 0
994.6 19:00 +1.3
994.6 20:00 +1.3
994.6 21:00 +1.3
995.9 22:00 +1.3
995.9 23:00 +1.3

Colours show pressure relative to this day’s range

Lower · 989.3 Scale midpoint · 992.6 Higher · 995.9 Largest change over 3 hours

What is the chance of precipitation in Williamsport tomorrow?

Chance of precipitation tomorrow according to the daily forecast: 52%.

Precipitation for tomorrow

Hourly precipitation forecast
00:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 32%
01:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 32%
02:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 34%
03:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 62%
04:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 50%
05:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 63%
06:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 56%
07:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 47%
08:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 44%
09:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 39%
10:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 50%
11:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 39%
12:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 33%
13:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 36%
14:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 27%
15:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 27%
16:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 29%
17:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 29%
18:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 30%
19:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 31%
20:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 29%
21:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 28%
22:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 31%
23:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 33%

Williamsport weather tomorrow: morning, afternoon and evening

Morning: cloudy and light rain, +13 °C. Afternoon: overcast and showers, +14 °C. Evening: overcast and showers, +14 °C.

According to the hourly forecast, tomorrow's highest temperature is expected at 15:00, at around +15 °C. Times are local.

Tomorrow's strongest winds are expected from 00:00 to 01:00 (from the northwest). The lightest winds are expected at 23:00 (from the northwest). Times are local.

Temperature and wind for tomorrow

+12° +12° +13° +13° +14° +15° +14° +13° 2.2 m/s 1.7 m/s 1.7 m/s 1.4 m/s 1.7 m/s 1.9 m/s 1.4 m/s 1.4 m/s
00:00 03:00 06:00 09:00 12:00 15:00 18:00 21:00
- Wind direction and speed, m/s
- Temperature, °C

What geomagnetic activity is forecast for Williamsport tomorrow?

The highest forecast Kp index for tomorrow is 2.

Magnetic storm tomorrow

00:00 2
03:00 2
06:00 2
09:00 2
12:00 1
15:00 1
18:00 2
21:00 2

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