Weather tomorrow: San Ysidro

Forecast for tomorrow, 29 September: clear. The daily air temperature range is 20 to 28 °C. Chance of precipitation tomorrow according to the daily forecast: 2%. Forecast precipitation amount: 0 mm. Wind from the west at 5.8 m/s.

tuesday 29 september

Clear

Clear, Precipitation probability 2%, Sunrise 06:41, Sunset 18:35, 29.09.2026

+28°

+20°

Sunset 18:35

G/m activity 2

Precipitation probability 2%

Precipitation 0.0 mm

Wind 5.8 m/s

Pressure 1002.6 hPa

Index UV 7

Humidity 50%

Sunrise 06:41

Moon Waning Gibbous

Sunrise 06:41

Sunset 18:35

G/m activity 2

Moon Waning Gibbous

Clear
night
+20°
Clear
morning
+20°
Clear
day
+26°
Clear
evening
+26°
Time
Description
Temperature
Precipitation probability
Precipitation
Wind

00:00

Clear

20°

3 %
-

S

1.4 m/s

01:00

Clear

20°

3 %
-

S

1.7 m/s

02:00

Clear

20°

3 %
-

SW

1.4 m/s

03:00

Clear

20°

4 %
-

W

1.1 m/s

04:00

Clear

20°

4 %
-

N

0.3 m/s

05:00

Clear

20°

4 %
-

N

0.3 m/s

06:00

Clear

20°

4 %
-

E

0.3 m/s

07:00

Clear

20°

4 %
-

E

0.3 m/s

08:00

Clear

20°

3 %
-

N

0.3 m/s

09:00

Clear

22°

2 %
-

W

0.3 m/s

10:00

Clear

23°

1 %
-

W

1.4 m/s

11:00

Clear

25°

1 %
-

W

2.2 m/s

12:00

Clear

26°

1 %
-

W

2.8 m/s

13:00

Clear

28°

1 %
-

W

3.9 m/s

14:00

Clear

28°

1 %
-

W

5 m/s

15:00

Clear

27°

1 %
-

W

4.7 m/s

16:00

Clear

26°

1 %
-

W

4.2 m/s

17:00

Clear

26°

1 %
-

W

2.8 m/s

18:00

Clear

26°

1 %
-

W

1.9 m/s

19:00

Clear

25°

1 %
-

W

1.9 m/s

20:00

Clear

24°

1 %
-

W

1.4 m/s

21:00

Clear

24°

1 %
-

SW

1.9 m/s

22:00

Clear

23°

2 %
-

SW

2.2 m/s

23:00

Clear

22°

3 %
-

SW

1.7 m/s

What is the atmospheric pressure in San Ysidro tomorrow?

Pressure adjusted for location elevation. Location elevation: 31 m relative to sea level

Forecast for 29.09.2026 · Local time

Pressure: 1001.3–1003.9 hPa.

Minimum: 1001.3 hPa04:00–06:00Also at other hours

Maximum: 1003.9 hPa08:00Also at other hours

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

hPa · Change over the previous 3 hours

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

Colours show pressure relative to this day’s range

Lower · 1001.3 Scale midpoint · 1002.6 Higher · 1003.9 Largest change over 3 hours

What is the chance of precipitation in San Ysidro tomorrow?

Chance of precipitation tomorrow according to the daily forecast: 2%.

Precipitation for tomorrow

Hourly precipitation forecast
00:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 3%
01:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 3%
02:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 3%
03:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 4%
04:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 4%
05:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 4%
06:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 4%
07:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 4%
08:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 3%
09:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 2%
10:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
11:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
12:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
13:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
14:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
15:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
16:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
17:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
18:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
19:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
20:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
21:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 1%
22:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 2%
23:00 Amount of precipitation in millimeters (mm): 0 mm Probability of precipitation in percent (%): 3%

San Ysidro weather tomorrow: morning, afternoon and evening

Morning: clear, +20 °C. Afternoon: clear, +26 °C. Evening: clear, +26 °C.

According to the hourly forecast, tomorrow's highest temperature is expected from 13:00 to 14:00, at around +28 °C. Times are local.

Tomorrow's strongest winds are expected at 14:00 (from the west). Times are local.

Temperature and wind for tomorrow

+20° +20° +20° +22° +26° +27° +26° +24° 1.4 m/s 1.1 m/s 0.3 m/s 0.3 m/s 2.8 m/s 4.7 m/s 1.9 m/s 1.9 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 San Ysidro tomorrow?

The highest forecast Kp index for tomorrow is 2.

Magnetic storm tomorrow

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

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