Observations made at San Diego City, compiled from Report Of the Chief Signal Officer of the U. S. Army.
[Transcriber's note: Table has been modified from original to fit, using a legend.]
Column headers:
a = Average number of cloudy days for each month and year.
b = Average number of fair days for each month and year.
c = Average number of clear days for each month and year.
d = Average cloudiness, scale 0 to 10, for each month and year.
e = Average hourly velocity of wind for each month and year.
f = Average precipitation for each month and year.
g = Minimum temperature for each month and year.
h = Maximum temperature for each month and year.
i = Mean temperature for each month and year.
j = Mean normal barometer of San Diego for each month and year for four years.
| Observations Extending over a Period of Twelve Years. | ||||||||||
| MONTH. | a | b | c | d | e | f | g | h | i | j |
| January | 8.5 | 11.2 | 11.3 | 4.1 | 5.1 | 1.85 | 32.0 | 78.0 | 53.6 | 30.027 |
| February | 7.9 | 11.3 | 9.0 | 4.4 | 6.0 | 2.07 | 35.0 | 82.6 | 54.3 | 30.058 |
| March | 9.6. | 12.7 | 8.7 | 4.8 | 6.4 | 0.97 | 38.0 | 99.0 | 55.7 | 30.004 |
| April | 7.9 | 11.9 | 10.2 | 4.4 | 6.6 | 0.68 | 39.0 | 87.0 | 57.7 | 29.965 |
| May | 10.9 | 12.1 | 8.0 | 5.2 | 6.7 | 0.26 | 45.4 | 94.0 | 61.0 | 29.893 |
| June | 8.1. | 15.2 | 6.7 | 5.0 | 6.3 | 0.05 | 51.0 | 94.0 | 64.4 | 29.864 |
| July | 6.7 | 16.1 | 8.2 | 4.7 | 6.3 | 0.02 | 54.0 | 86.0 | 67.1 | 29.849 |
| August | 4.7 | 16.9 | 9.4 | 4.1 | 6.0 | 0.23 | 54.0 | 86.0 | 68.7 | 29.894 |
| September | 4.4 | 13.9 | 11.7 | 3.7 | 5.9 | 0.05 | 49.5 | 101.0 | 66.8 | 29.840 |
| October | 5.6 | 12.6 | 12.8 | 3.9 | 5.4 | 0.49 | 44.0 | 92.0 | 62.9 | 29.905 |
| November | 6.5 | 10.0 | 13.5 | 3.6 | 5.1 | 0.70 | 38.0 | 85.0 | 58.3 | 29.991 |
| December | 6.6 | 11.2 | 13.2 | 3.7 | 5.1 | 2.12 | 32.0 | 82.0 | 55.6 | 30.009 |
| Mean annual | 87.4 | 155.1 | 122.7 | 4.3 | 5.9. | 9.49 | 42.6 | 88.8 | 60.5 | 29.942 |