S
M
T
W
T
F
S
27
54°
46°
28
53°
49°
29
53°
48°
30
60°
49°
31
61°
51°
1
63°
46°
2
58°
43°
3
54°
42°
4
54°
42°
5
55°
41°
6
54°
43°
7
55°
42°
8
56°
43°
9
56°
43°
10
57°
45°
11
60°
46°
12
60°
44°
13
60°
47°
14
60°
43°
15
53°
45°
16
59°
46°
17
62°
50°
18
61°
50°
19
61°
48°
20
55°
45°
21
56°
50°
22
56°
50°
23
60°
51°
24
59°
48°
25
62°
50°
26
61°
51°
27
55°
50°
28
58°
51°
29
56°
48°
30
54°
43°
31
59°
44°
1
55°
48°
2
Hist. Avg.
59°
47°
3
Hist. Avg.
59°
47°
4
Hist. Avg.
59°
47°
5
Hist. Avg.
60°
48°
6
Hist. Avg.
60°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in San Francisco
San Francisco's January 2027 forecast shows daily high temperatures ranging from 53° to 63°, with overnight lows between 41° and 51°. The average high for January is 57° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how January weather will actually feel in San Francisco. See also: February | March | April.
