S
M
T
W
T
F
S
26
52°
37°
27
52°
36°
28
61°
36°
29
56°
39°
30
44°
38°
1
57°
36°
2
67°
41°
3
69°
45°
4
69°
45°
5
67°
42°
6
53°
41°
7
58°
40°
8
62°
42°
9
69°
45°
10
67°
47°
11
70°
47°
12
69°
41°
13
66°
45°
14
63°
44°
15
62°
41°
16
63°
39°
17
64°
40°
18
65°
40°
19
65°
41°
20
68°
45°
21
64°
44°
22
66°
41°
23
66°
41°
24
63°
42°
25
63°
40°
26
64°
41°
27
67°
40°
28
69°
41°
29
75°
46°
30
79°
51°
31
72°
51°
1
76°
50°
2
77°
48°
3
77°
49°
4
80°
50°
5
78°
51°
6
80°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Arvada
Arvada's May 2026 forecast shows daily high temperatures ranging from 44° to 80°, with overnight lows between 36° and 53°. The average high for May is 67° with an average low of 44°. 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 Arvada. See also: June | July | August.