S
M
T
W
T
F
S
28
56°
37°
29
59°
38°
30
57°
39°
31
50°
41°
1
55°
47°
2
57°
52°
3
59°
53°
4
57°
50°
5
52°
48°
6
58°
49°
7
59°
47°
8
56°
44°
9
57°
34°
10
56°
38°
11
61°
39°
12
58°
39°
13
65°
40°
14
62°
41°
15
67°
44°
16
67°
43°
17
64°
42°
18
64°
45°
19
65°
43°
20
61°
43°
21
56°
44°
22
64°
45°
23
62°
44°
24
65°
42°
25
52°
39°
26
56°
43°
27
58°
41°
28
61°
49°
29
63°
42°
30
62°
43°
31
62°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
January Weather in San Anselmo
San Anselmo's January 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for January is ° with an average low of °. 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 Anselmo. See also: February | March | April.