S
M
T
W
T
F
S
26
61°
53°
27
62°
52°
28
63°
52°
29
65°
52°
30
65°
54°
1
63°
54°
2
62°
55°
3
64°
54°
4
64°
55°
5
63°
56°
6
66°
56°
7
63°
54°
8
64°
53°
9
65°
56°
10
66°
53°
11
67°
55°
12
69°
54°
13
64°
51°
14
60°
50°
15
60°
52°
16
61°
51°
17
60°
49°
18
60°
52°
19
61°
49°
20
62°
51°
21
65°
53°
22
67°
54°
23
68°
57°
24
69°
56°
25
69°
55°
26
66°
54°
27
63°
53°
28
62°
52°
29
61°
51°
30
62°
52°
31
61°
51°
1
61°
50°
2
62°
51°
3
64°
53°
4
67°
56°
5
65°
52°
6
63°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Francisco
San Francisco's May 2026 forecast shows daily high temperatures ranging from 60° to 69°, with overnight lows between 49° and 57°. The average high for May is 64° with an average low of 53°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in San Francisco. See also: June | July | August.
