S
M
T
W
T
F
S
26
35°
23°
27
45°
22°
28
54°
21°
29
50°
31°
30
60°
28°
1
69°
25°
2
72°
29°
3
72°
34°
4
55°
37°
5
47°
23°
6
67°
19°
7
63°
41°
8
72°
34°
9
64°
35°
10
80°
32°
11
80°
52°
12
76°
35°
13
90°
38°
14
70°
46°
15
67°
41°
16
65°
37°
17
51°
33°
18
51°
29°
19
60°
36°
20
61°
37°
21
70°
44°
22
69°
42°
23
72°
43°
24
80°
46°
25
87°
48°
26
80°
51°
27
84°
52°
28
85°
52°
29
72°
44°
30
67°
47°
31
65°
41°
1
68°
48°
2
69°
44°
3
73°
49°
4
77°
49°
5
72°
48°
6
68°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sourdough
Sourdough's May 2026 forecast shows daily high temperatures ranging from 51° to 87°, with overnight lows between 29° and 52°. The average high for May is 70° with an average low of 44°. 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 Sourdough. See also: June | July | August.