S
M
T
W
T
F
S
29
84°
50°
30
79°
52°
31
67°
56°
1
62°
54°
2
62°
45°
3
73°
43°
4
77°
44°
5
80°
48°
6
73°
44°
7
70°
49°
8
75°
49°
9
76°
52°
10
69°
55°
11
62°
50°
12
63°
47°
13
66°
47°
14
66°
47°
15
67°
49°
16
72°
44°
17
73°
46°
18
70°
48°
19
69°
47°
20
68°
47°
21
71°
48°
22
69°
49°
23
71°
47°
24
70°
46°
25
64°
43°
26
65°
44°
27
66°
46°
28
66°
50°
29
68°
51°
30
65°
50°
1
66°
50°
2
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Anselmo
San Anselmo's April 2026 forecast shows daily high temperatures ranging from 62° to 73°, with overnight lows between 43° and 51°. The average high for April is 67° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in San Anselmo. See also: May | June | July.