Average daily temperatures in San Francisco, California, including the lower and upper bounds of the 95% confidence interval. Due to the possibility of missing data, the actual day counts used in the average and confidence interval calculations are provided. The table is also offered in degrees of Fahrenheit.
January | February | March | April | May | June | July | August | September | October | November | December | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 9 11 12 | 10 11 12 | 10 11 12 | 11 13 14 | 13 14 15 | 14 15 16 | 16 16 17 | 16 16 17 | 16 17 18 | 16 17 18 | 13 14 15 | 11 12 13 |
2 | 10 11 12 | 10 11 12 | 11 12 12 | 12 13 14 | 13 15 16 | 14 15 15 | 15 16 17 | 16 17 17 | 16 18 19 | 16 17 18 | 13 14 16 | 11 12 13 |
3 | 9 10 11 | 10 11 12 | 11 12 12 | 11 12 13 | 13 15 16 | 14 15 16 | 15 16 17 | 16 16 17 | 16 17 18 | 15 16 17 | 13 15 16 | 11 11 12 |
4 | 9 10 11 | 11 11 12 | 10 11 12 | 11 12 12 | 13 14 15 | 14 15 16 | 15 16 17 | 16 17 17 | 16 17 18 | 15 16 17 | 13 14 15 | 10 11 12 |
5 | 9 10 10 | 11 12 12 | 10 11 12 | 11 12 13 | 13 14 15 | 15 15 16 | 15 16 16 | 16 17 18 | 16 17 19 | 15 16 17 | 12 14 15 | 11 12 13 |
6 | 9 10 10 | 10 11 12 | 10 11 12 | 11 12 13 | 13 14 15 | 14 15 16 | 15 16 16 | 16 17 17 | 17 18 20 | 15 16 17 | 13 14 15 | 11 12 13 |
7 | 9 10 11 | 11 12 12 | 11 11 12 | 11 12 13 | 13 14 16 | 14 15 15 | 16 16 17 | 16 16 17 | 17 18 19 | 15 16 17 | 13 14 15 | 10 11 12 |
8 | 10 10 11 | 10 11 12 | 10 11 12 | 11 12 12 | 13 14 15 | 14 15 15 | 16 16 17 | 16 17 17 | 16 17 18 | 15 16 18 | 13 14 15 | 10 11 12 |
9 | 9 10 11 | 10 11 12 | 11 12 13 | 11 12 13 | 13 13 14 | 14 15 16 | 15 16 17 | 16 17 18 | 16 17 17 | 15 16 17 | 12 13 14 | 10 11 12 |
10 | 9 10 11 | 10 11 12 | 11 12 13 | 12 13 13 | 13 13 13 | 15 15 16 | 15 16 17 | 16 17 18 | 16 17 18 | 15 16 16 | 13 13 14 | 10 11 12 |
11 | 10 11 12 | 10 11 12 | 11 12 14 | 12 12 13 | 13 13 14 | 14 15 16 | 15 16 17 | 16 17 18 | 16 17 18 | 15 16 17 | 12 13 14 | 10 11 12 |
12 | 9 10 11 | 10 11 12 | 11 12 13 | 12 13 14 | 13 13 14 | 14 15 16 | 16 17 17 | 16 17 17 | 16 17 18 | 15 16 18 | 12 13 14 | 10 11 12 |
13 | 9 10 12 | 10 11 12 | 11 12 13 | 11 13 14 | 13 13 14 | 15 16 17 | 16 17 18 | 16 17 17 | 16 17 18 | 16 17 18 | 13 14 14 | 10 11 12 |
14 | 9 10 11 | 11 11 12 | 12 13 13 | 11 12 13 | 13 14 15 | 15 16 17 | 16 16 17 | 16 16 17 | 16 17 18 | 16 17 19 | 13 14 15 | 10 11 12 |
15 | 9 10 11 | 10 11 12 | 11 12 14 | 11 12 13 | 13 15 17 | 15 16 17 | 16 16 17 | 16 16 17 | 15 16 17 | 15 16 17 | 13 14 16 | 10 11 12 |
16 | 9 10 11 | 10 11 12 | 12 13 14 | 12 13 14 | 13 15 16 | 14 15 16 | 16 16 17 | 16 17 17 | 15 16 17 | 15 16 17 | 13 14 15 | 9 10 11 |
17 | 9 10 11 | 10 11 13 | 11 13 14 | 12 13 14 | 13 15 17 | 15 16 17 | 16 16 17 | 16 16 17 | 16 17 17 | 16 17 18 | 13 14 14 | 10 10 11 |
18 | 9 10 11 | 10 11 12 | 11 12 13 | 12 12 13 | 13 14 15 | 15 16 17 | 16 17 17 | 16 16 17 | 16 17 19 | 15 16 17 | 12 13 14 | 10 10 11 |
19 | 9 10 11 | 10 11 12 | 12 13 14 | 12 13 14 | 14 14 15 | 15 16 17 | 16 17 17 | 15 16 17 | 16 18 19 | 15 16 16 | 12 13 14 | 9 10 11 |
20 | 9 10 11 | 10 11 12 | 12 13 14 | 12 13 15 | 14 15 15 | 15 16 17 | 16 17 17 | 16 16 17 | 16 18 19 | 14 15 16 | 12 13 14 | 9 10 11 |
21 | 10 10 11 | 10 11 12 | 11 12 13 | 12 13 15 | 14 14 15 | 15 17 18 | 16 17 18 | 16 17 17 | 16 17 18 | 14 15 16 | 12 13 14 | 9 10 12 |
22 | 9 10 11 | 10 11 12 | 12 12 13 | 13 14 15 | 13 14 15 | 15 16 16 | 16 17 18 | 16 17 18 | 15 16 18 | 14 15 16 | 12 12 13 | 9 11 12 |
23 | 10 10 11 | 10 11 12 | 11 12 13 | 13 14 15 | 14 15 16 | 15 15 16 | 16 17 18 | 16 17 18 | 16 17 17 | 14 15 17 | 12 13 13 | 9 10 11 |
24 | 9 10 11 | 10 11 12 | 11 12 13 | 13 14 14 | 14 15 16 | 15 16 16 | 16 17 18 | 16 17 18 | 15 17 18 | 15 16 17 | 11 12 13 | 9 10 11 |
25 | 10 11 11 | 10 11 12 | 11 12 13 | 13 14 15 | 13 14 15 | 15 16 17 | 16 16 17 | 16 17 19 | 16 17 18 | 14 16 17 | 11 12 13 | 9 10 11 |
26 | 10 11 12 | 10 11 12 | 11 12 12 | 12 14 15 | 13 14 15 | 15 16 18 | 16 16 17 | 16 17 18 | 16 17 18 | 14 15 16 | 11 12 13 | 9 10 11 |
27 | 10 11 11 | 10 11 12 | 11 12 13 | 12 14 15 | 13 14 15 | 15 17 18 | 16 16 17 | 16 17 18 | 16 17 18 | 14 15 16 | 11 12 13 | 9 10 11 |
28 | 9 10 11 | 10 11 12 | 11 12 13 | 12 13 14 | 14 15 15 | 16 17 18 | 15 16 17 | 16 17 19 | 16 17 19 | 14 15 16 | 11 12 12 | 9 10 11 |
29 | 9 10 11 | 10 11 11 | 12 13 14 | 12 14 15 | 14 15 16 | 16 17 17 | 16 16 17 | 16 18 19 | 15 17 18 | 14 14 15 | 11 12 13 | 9 10 11 |
30 | 10 11 11 | 12 13 14 | 13 14 16 | 14 15 16 | 16 17 17 | 16 17 17 | 16 17 18 | 16 17 18 | 13 14 15 | 10 12 13 | 10 11 12 | |
31 | 10 10 11 | 12 13 14 | 14 15 17 | 16 17 18 | 16 17 18 | 13 14 15 | 9 11 12 |