S
M
T
W
T
F
S
26
81°
63°
27
88°
63°
28
66°
55°
29
68°
49°
30
65°
49°
1
68°
47°
2
73°
46°
3
82°
51°
4
81°
59°
5
72°
49°
6
64°
47°
7
73°
45°
8
82°
53°
9
81°
55°
10
63°
53°
11
75°
49°
12
80°
53°
13
83°
60°
14
88°
64°
15
79°
72°
16
86°
68°
17
86°
71°
18
88°
75°
19
80°
54°
20
64°
54°
21
67°
59°
22
79°
61°
23
80°
61°
24
83°
63°
25
86°
64°
26
84°
65°
27
79°
65°
28
76°
63°
29
79°
64°
30
80°
63°
31
75°
59°
1
75°
57°
2
81°
60°
3
77°
60°
4
79°
61°
5
82°
62°
6
84°
69°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Denver
Denver's May 2026 forecast shows daily high temperatures ranging from 75° to 86°, with overnight lows between 57° and 69°. The average high for May is 80° with an average low of 62°. 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 Denver. See also: June | July | August.