S
M
T
W
T
F
S
26
55°
28°
27
61°
29°
28
64°
46°
29
50°
41°
30
44°
32°
1
44°
31°
2
48°
27°
3
62°
26°
4
78°
40°
5
62°
36°
6
51°
28°
7
49°
31°
8
62°
25°
9
65°
34°
10
54°
34°
11
51°
28°
12
51°
22°
13
50°
43°
14
62°
39°
15
70°
34°
16
85°
50°
17
64°
45°
18
89°
45°
19
84°
46°
20
58°
37°
21
52°
32°
22
60°
32°
23
54°
45°
24
54°
44°
25
82°
58°
26
87°
54°
27
77°
45°
28
72°
46°
29
73°
40°
30
67°
41°
31
71°
45°
1
73°
46°
2
72°
45°
3
77°
51°
4
76°
50°
5
74°
51°
6
73°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Branch
South Branch's May 2026 forecast shows daily high temperatures ranging from 67° to 87°, with overnight lows between 40° and 58°. The average high for May is 75° 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 May weather will actually feel in South Branch. See also: June | July | August.
