Weather tomorrow: Port Jefferson Station

Forecast for tomorrow, 28 September: overcast and light rain. The daily air temperature range is 14 to 18 °C. Chance of precipitation tomorrow according to the daily forecast: 93%. Forecast precipitation amount: 16.9 mm. Wind from the northeast at 11.9 m/s.

monday 28 september

Overcast and light rain

Overcast and light rain, Precipitation probability 93%, Sunrise 06:46, Sunset 18:39, 28.09.2026

+18°

+14°

Sunset 18:39

G/m activity 2

Precipitation probability 93%

Precipitation 16.9 mm

Wind 11.9 m/s

Pressure 1002.6 hPa

Index UV 3

Humidity 95%

Sunrise 06:46

Moon Waning Gibbous

Sunrise 06:46

Sunset 18:39

G/m activity 2

Moon Waning Gibbous

Overcast and light rain
night
+17°
Overcast and light rain
morning
+18°
Overcast and light rain
day
+18°
Overcast and light rain
evening
+18°
Time
Description
Temperature
Precipitation probability
Precipitation
Wind

00:00

Overcast and light rain

17°

83 %
2.1 mm

SE

5.8 m/s

01:00

Overcast and light rain

17°

81 %
1.9 mm

SE

5.8 m/s

02:00

Overcast and light rain

18°

73 %
0.9 mm

SE

5.6 m/s

03:00

Overcast and light rain

18°

67 %
0.6 mm

E

5.3 m/s

04:00

Overcast and light rain

18°

70 %
0.8 mm

SE

5 m/s

05:00

Overcast and showers

18°

42 %
0.1 mm

SE

4.7 m/s

06:00

Overcast and light rain

18°

60 %
0.5 mm

E

4.7 m/s

07:00

Overcast and light rain

18°

51 %
0.3 mm

SE

4.4 m/s

08:00

Overcast and light rain

18°

51 %
0.3 mm

SE

4.2 m/s

09:00

Overcast and light rain

18°

68 %
0.8 mm

SE

4.2 m/s

10:00

Overcast and light rain

18°

44 %
0.2 mm

SE

3.9 m/s

11:00

Overcast and light rain

18°

45 %
0.2 mm

SE

3.6 m/s

12:00

Overcast and light rain

18°

44 %
0.2 mm

SE

3.6 m/s

13:00

Overcast and light rain

19°

48 %
0.3 mm

SE

3.6 m/s

14:00

Overcast and light rain

19°

32 %
0.2 mm

SE

3.3 m/s

15:00

Overcast and showers

19°

30 %
0.1 mm

SE

3.9 m/s

16:00

Overcast and light rain

19°

30 %
0.2 mm

SE

3.9 m/s

17:00

Overcast and light rain

19°

42 %
0.3 mm

SE

3.9 m/s

18:00

Overcast and light rain

18°

49 %
0.4 mm

SE

2.8 m/s

19:00

Overcast and light rain

18°

70 %
0.9 mm

SE

1.7 m/s

20:00

Overcast and light rain

17°

75 %
1.3 mm

NE

1.7 m/s

21:00

Overcast and light rain

17°

75 %
1 mm

NE

4.4 m/s

22:00

Overcast and light rain

17°

49 %
0.2 mm

NE

6.7 m/s

23:00

Overcast and light rain

16°

50 %
0.2 mm

NE

8.1 m/s

What is the atmospheric pressure in Port Jefferson Station tomorrow?

Pressure adjusted for location elevation. Location elevation: 55 m relative to sea level

Forecast for 28.09.2026 · Local time

Pressure: 999.9–1005.3 hPa.

Minimum: 999.9 hPa00:00–05:00

Maximum: 1005.3 hPa22:00–23:00

Largest change over 3 hours: +2.7 hPa · 05:00–08:00
First of 2 intervals with the same change magnitude shown.

hPa · Change over the previous 3 hours

999.9 00:00 —
999.9 01:00 —
999.9 02:00 —
999.9 03:00 0
999.9 04:00 0
999.9 05:00 0
1001.3 06:00 +1.3
1001.3 07:00 +1.3
1002.6 08:00 +2.7
1002.6 09:00 +1.3
1003.9 10:00 +2.7
1003.9 11:00 +1.3
1003.9 12:00 +1.3
1003.9 13:00 0
1003.9 14:00 0
1003.9 15:00 0
1003.9 16:00 0
1003.9 17:00 0
1003.9 18:00 0
1003.9 19:00 0
1003.9 20:00 0
1003.9 21:00 0
1005.3 22:00 +1.3
1005.3 23:00 +1.3

Colours show pressure relative to this day’s range

Lower · 999.9 Scale midpoint · 1002.6 Higher · 1005.3 Largest change over 3 hours

What is the chance of precipitation in Port Jefferson Station tomorrow?

Chance of precipitation tomorrow according to the daily forecast: 93%.

Precipitation for tomorrow

Hourly precipitation forecast
00:00 Amount of precipitation in millimeters (mm): 2.1 mm Probability of precipitation in percent (%): 83%
01:00 Amount of precipitation in millimeters (mm): 1.9 mm Probability of precipitation in percent (%): 81%
02:00 Amount of precipitation in millimeters (mm): 0.9 mm Probability of precipitation in percent (%): 73%
03:00 Amount of precipitation in millimeters (mm): 0.6 mm Probability of precipitation in percent (%): 67%
04:00 Amount of precipitation in millimeters (mm): 0.8 mm Probability of precipitation in percent (%): 70%
05:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 42%
06:00 Amount of precipitation in millimeters (mm): 0.5 mm Probability of precipitation in percent (%): 60%
07:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 51%
08:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 51%
09:00 Amount of precipitation in millimeters (mm): 0.8 mm Probability of precipitation in percent (%): 68%
10:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 44%
11:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 45%
12:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 44%
13:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 48%
14:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 32%
15:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 30%
16:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 30%
17:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 42%
18:00 Amount of precipitation in millimeters (mm): 0.4 mm Probability of precipitation in percent (%): 49%
19:00 Amount of precipitation in millimeters (mm): 0.9 mm Probability of precipitation in percent (%): 70%
20:00 Amount of precipitation in millimeters (mm): 1.3 mm Probability of precipitation in percent (%): 75%
21:00 Amount of precipitation in millimeters (mm): 1 mm Probability of precipitation in percent (%): 75%
22:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 49%
23:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 50%

Port Jefferson Station weather tomorrow: morning, afternoon and evening

Morning: overcast and light rain, +18 °C. Afternoon: overcast and light rain, +18 °C. Evening: overcast and light rain, +18 °C.

According to the hourly forecast, tomorrow's highest temperature is expected from 13:00 to 17:00, at around +19 °C. Times are local.

Tomorrow's strongest winds are expected at 23:00 (from the northeast). The lightest winds are expected at 19:00 (from the southeast); at 20:00 (from the northeast). Times are local.

Temperature and wind for tomorrow

+17° +18° +18° +18° +18° +19° +18° +17° 5.8 m/s 5.3 m/s 4.7 m/s 4.2 m/s 3.6 m/s 3.9 m/s 2.8 m/s 4.4 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 Port Jefferson Station 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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