S
M
T
W
T
F
S
26
96°
76°
27
94°
77°
28
93°
77°
29
94°
76°
30
93°
77°
1
93°
77°
2
94°
76°
3
93°
77°
4
94°
77°
5
95°
76°
6
94°
76°
7
95°
77°
8
94°
77°
9
96°
76°
10
96°
77°
11
95°
77°
12
93°
76°
13
93°
77°
14
94°
77°
15
93°
76°
16
95°
77°
17
93°
77°
18
95°
76°
19
95°
77°
20
94°
77°
21
94°
76°
22
94°
75°
23
92°
74°
24
92°
74°
25
93°
75°
26
92°
74°
27
92°
73°
28
93°
73°
29
92°
74°
30
92°
75°
31
93°
75°
1
94°
77°
2
94°
76°
3
92°
76°
4
94°
75°
5
93°
74°
6
92°
75°
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 92° to 96°, with overnight lows between 73° and 77°. The average high for May is 94° with an average low of 76°. 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.
