S
M
T
W
T
F
S
26
66°
50°
27
70°
45°
28
75°
45°
29
81°
48°
30
84°
50°
1
84°
50°
2
73°
50°
3
70°
52°
4
63°
50°
5
72°
54°
6
77°
55°
7
84°
54°
8
86°
50°
9
90°
52°
10
88°
52°
11
95°
55°
12
90°
57°
13
82°
51°
14
87°
53°
15
89°
50°
16
84°
53°
17
82°
53°
18
88°
62°
19
93°
61°
20
94°
62°
21
93°
59°
22
90°
58°
23
87°
57°
24
85°
55°
25
83°
56°
26
85°
54°
27
78°
50°
28
79°
50°
29
79°
50°
30
80°
51°
31
87°
54°
1
88°
55°
2
89°
59°
3
89°
58°
4
81°
52°
5
83°
56°
6
87°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Cosumne
Cosumne's May 2026 forecast shows daily high temperatures ranging from 78° to 94°, with overnight lows between 50° and 62°. The average high for May is 86° with an average low of 55°. 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 Cosumne. See also: June | July | August.
