S
M
T
W
T
F
S
26
88°
54°
27
86°
52°
28
88°
51°
29
86°
53°
30
86°
54°
1
88°
58°
2
88°
59°
3
81°
60°
4
82°
55°
5
90°
55°
6
90°
58°
7
91°
60°
8
91°
61°
9
86°
61°
10
88°
58°
11
87°
56°
12
84°
55°
13
81°
49°
14
84°
54°
15
84°
52°
16
90°
57°
17
88°
57°
18
84°
63°
19
88°
58°
20
84°
60°
21
84°
59°
22
86°
59°
23
90°
59°
24
79°
58°
25
75°
60°
26
84°
55°
27
84°
58°
28
84°
59°
29
73°
57°
30
81°
57°
31
82°
58°
1
82°
59°
2
73°
59°
3
82°
60°
4
82°
61°
5
81°
62°
6
81°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in San Francisco La Union
San Francisco La Union's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May 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 May weather will actually feel in San Francisco La Union. See also: June | July | August.
