S
M
T
W
T
F
S
26
71°
49°
27
77°
58°
28
69°
48°
29
61°
39°
30
58°
37°
1
51°
35°
2
53°
36°
3
58°
43°
4
63°
45°
5
64°
46°
6
62°
44°
7
61°
45°
8
63°
46°
9
61°
45°
10
62°
44°
11
63°
48°
12
68°
47°
13
64°
43°
14
63°
42°
15
63°
42°
16
64°
44°
17
65°
44°
18
72°
55°
19
73°
51°
20
71°
47°
21
66°
49°
22
69°
49°
23
72°
52°
24
77°
57°
25
78°
54°
26
71°
50°
27
69°
50°
28
72°
53°
29
78°
55°
30
78°
58°
31
79°
59°
1
80°
59°
2
81°
60°
3
81°
60°
4
80°
59°
5
73°
54°
6
79°
61°
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 51° to 81°, with overnight lows between 35° and 61°. The average high for May is 69° with an average low of 49°. 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.