S
M
T
W
T
F
S
26
74°
54°
27
76°
48°
28
71°
53°
29
73°
54°
30
77°
54°
1
72°
52°
2
71°
55°
3
73°
56°
4
79°
55°
5
71°
48°
6
68°
47°
7
70°
47°
8
71°
54°
9
75°
49°
10
70°
48°
11
70°
48°
12
72°
53°
13
80°
58°
14
81°
59°
15
82°
59°
16
82°
60°
17
81°
60°
18
82°
59°
19
81°
60°
20
81°
60°
21
80°
59°
22
75°
57°
23
76°
56°
24
78°
57°
25
83°
57°
26
77°
59°
27
79°
59°
28
81°
60°
29
84°
62°
30
85°
61°
31
85°
62°
1
86°
57°
2
83°
57°
3
80°
58°
4
79°
56°
5
79°
57°
6
80°
59°
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 68° to 86°, with overnight lows between 47° and 62°. The average high for May is 77° with an average low of 56°. 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.