Weather tomorrow: Riverhead

Forecast for tomorrow, 28 September: overcast and light rain. The daily air temperature range is 14 to 19 °C. Chance of precipitation tomorrow according to the daily forecast: 93%. Forecast precipitation amount: 19.3 mm. Wind from the northeast at 11.7 m/s.

monday 28 september

Overcast and light rain

Overcast and light rain, Precipitation probability 93%, Sunrise 06:44, Sunset 18:38, 28.09.2026

+19°

+14°

Sunset 18:38

G/m activity 2

Precipitation probability 93%

Precipitation 19.3 mm

Wind 11.7 m/s

Pressure 1006.6 hPa

Index UV 2

Humidity 94%

Sunrise 06:44

Moon Waning Gibbous

Sunrise 06:44

Sunset 18:38

G/m activity 2

Moon Waning Gibbous

Overcast and showers
night
+18°
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 showers

18°

90 %
4.2 mm

SE

6.1 m/s

01:00

Overcast and light rain

18°

81 %
1.9 mm

SE

6.4 m/s

02:00

Overcast and light rain

18°

77 %
1.3 mm

SE

5.6 m/s

03:00

Overcast and light rain

18°

70 %
0.8 mm

SE

6.1 m/s

04:00

Overcast and light rain

18°

71 %
0.9 mm

SE

5.3 m/s

05:00

Overcast and light rain

18°

48 %
0.3 mm

SE

4.7 m/s

06:00

Overcast and light rain

18°

66 %
0.7 mm

SE

5 m/s

07:00

Overcast and light rain

18°

52 %
0.3 mm

SE

5 m/s

08:00

Overcast and light rain

18°

61 %
0.5 mm

SE

5 m/s

09:00

Overcast and light rain

18°

74 %
1 mm

SE

4.2 m/s

10:00

Overcast and light rain

18°

43 %
0.2 mm

SE

3.6 m/s

11:00

Overcast and light rain

18°

40 %
0.2 mm

SE

3.6 m/s

12:00

Overcast and light rain

18°

49 %
0.3 mm

SE

3.6 m/s

13:00

Overcast and light rain

19°

52 %
0.4 mm

SE

3.9 m/s

14:00

Overcast and showers

19°

37 %
0.1 mm

SE

3.6 m/s

15:00

Overcast and showers

19°

28 %
0.1 mm

SE

3.9 m/s

16:00

Overcast and showers

19°

29 %
0.1 mm

SE

3.9 m/s

17:00

Overcast and showers

19°

36 %
0.1 mm

SE

4.2 m/s

18:00

Overcast and light rain

18°

43 %
0.2 mm

SE

3.9 m/s

19:00

Overcast and light rain

18°

63 %
0.6 mm

SE

3.1 m/s

20:00

Overcast and light rain

17°

72 %
1 mm

SE

1.7 m/s

21:00

Overcast and light rain

17°

66 %
0.7 mm

NE

1.4 m/s

22:00

Overcast and light rain

17°

69 %
0.8 mm

NE

3.1 m/s

23:00

Overcast and light rain

17°

75 %
1 mm

NE

4.2 m/s

What is the atmospheric pressure in Riverhead tomorrow?

Pressure adjusted for location elevation. Location elevation: 10 m relative to sea level

Forecast for 28.09.2026 · Local time

Pressure: 1005.3–1010.6 hPa.

Minimum: 1005.3 hPa00:00–04:00

Maximum: 1010.6 hPa22:00–23:00

Largest change over 3 hours: +2.7 hPa · 07:00–10:00

hPa · Change over the previous 3 hours

1005.3 00:00 —
1005.3 01:00 —
1005.3 02:00 —
1005.3 03:00 0
1005.3 04:00 0
1006.6 05:00 +1.3
1006.6 06:00 +1.3
1006.6 07:00 +1.3
1007.9 08:00 +1.3
1007.9 09:00 +1.3
1009.3 10:00 +2.7
1009.3 11:00 +1.3
1009.3 12:00 +1.3
1009.3 13:00 0
1009.3 14:00 0
1009.3 15:00 0
1009.3 16:00 0
1009.3 17:00 0
1009.3 18:00 0
1009.3 19:00 0
1009.3 20:00 0
1009.3 21:00 0
1010.6 22:00 +1.3
1010.6 23:00 +1.3

Colours show pressure relative to this day’s range

Lower · 1005.3 Scale midpoint · 1007.9 Higher · 1010.6 Largest change over 3 hours

What is the chance of precipitation in Riverhead 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): 4.2 mm Probability of precipitation in percent (%): 90%
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): 1.3 mm Probability of precipitation in percent (%): 77%
03:00 Amount of precipitation in millimeters (mm): 0.8 mm Probability of precipitation in percent (%): 70%
04:00 Amount of precipitation in millimeters (mm): 0.9 mm Probability of precipitation in percent (%): 71%
05:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 48%
06:00 Amount of precipitation in millimeters (mm): 0.7 mm Probability of precipitation in percent (%): 66%
07:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 52%
08:00 Amount of precipitation in millimeters (mm): 0.5 mm Probability of precipitation in percent (%): 61%
09:00 Amount of precipitation in millimeters (mm): 1 mm Probability of precipitation in percent (%): 74%
10:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 43%
11:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 40%
12:00 Amount of precipitation in millimeters (mm): 0.3 mm Probability of precipitation in percent (%): 49%
13:00 Amount of precipitation in millimeters (mm): 0.4 mm Probability of precipitation in percent (%): 52%
14:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 37%
15:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 28%
16:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 29%
17:00 Amount of precipitation in millimeters (mm): 0.1 mm Probability of precipitation in percent (%): 36%
18:00 Amount of precipitation in millimeters (mm): 0.2 mm Probability of precipitation in percent (%): 43%
19:00 Amount of precipitation in millimeters (mm): 0.6 mm Probability of precipitation in percent (%): 63%
20:00 Amount of precipitation in millimeters (mm): 1 mm Probability of precipitation in percent (%): 72%
21:00 Amount of precipitation in millimeters (mm): 0.7 mm Probability of precipitation in percent (%): 66%
22:00 Amount of precipitation in millimeters (mm): 0.8 mm Probability of precipitation in percent (%): 69%
23:00 Amount of precipitation in millimeters (mm): 1 mm Probability of precipitation in percent (%): 75%

Riverhead 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 01:00 (from the southeast). The lightest winds are expected at 21:00 (from the northeast). Times are local.

Temperature and wind for tomorrow

+18° +18° +18° +18° +18° +19° +18° +17° 6.1 m/s 6.1 m/s 5 m/s 4.2 m/s 3.6 m/s 3.9 m/s 3.9 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 Riverhead 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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