S
M
T
W
T
F
S
29
86°
51°
30
88°
61°
31
90°
61°
1
92°
62°
2
90°
66°
3
84°
70°
4
75°
57°
5
69°
52°
6
74°
46°
7
73°
54°
8
82°
51°
9
86°
61°
10
84°
64°
11
77°
63°
12
88°
60°
13
85°
67°
14
84°
67°
15
88°
64°
16
86°
65°
17
94°
67°
18
77°
51°
19
63°
49°
20
58°
49°
21
80°
56°
22
89°
62°
23
94°
65°
24
97°
67°
25
98°
65°
26
93°
70°
27
100°
67°
28
100°
72°
29
99°
70°
30
76°
64°
1
68°
56°
2
74°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in San Francisco
San Francisco's April 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for April 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 April weather will actually feel in San Francisco. See also: May | June | July.