S
M
T
W
T
F
S
26
74°
54°
27
72°
47°
28
66°
44°
29
81°
57°
30
77°
52°
1
67°
52°
2
64°
42°
3
69°
36°
4
79°
37°
5
80°
47°
6
76°
59°
7
76°
50°
8
71°
43°
9
75°
48°
10
83°
52°
11
69°
51°
12
72°
41°
13
78°
41°
14
72°
44°
15
75°
37°
16
84°
46°
17
89°
54°
18
89°
60°
19
90°
60°
20
91°
58°
21
87°
60°
22
68°
58°
23
60°
57°
24
75°
56°
25
84°
68°
26
84°
67°
27
86°
69°
28
89°
67°
29
84°
63°
30
83°
62°
31
76°
62°
1
82°
63°
2
71°
58°
3
80°
53°
4
85°
57°
5
89°
61°
6
88°
66°
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 80° to 89°, with overnight lows between 53° and 66°. The average high for May is 86° with an average low of 59°. 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.