S
M
T
W
T
F
S
26
72°
53°
27
71°
47°
28
57°
42°
29
59°
42°
30
57°
37°
1
56°
34°
2
65°
33°
3
76°
48°
4
83°
43°
5
61°
40°
6
58°
35°
7
67°
40°
8
72°
46°
9
75°
42°
10
67°
40°
11
74°
52°
12
72°
46°
13
71°
47°
14
74°
53°
15
77°
52°
16
76°
56°
17
78°
60°
18
79°
57°
19
78°
55°
20
84°
62°
21
68°
49°
22
66°
50°
23
67°
50°
24
69°
56°
25
70°
56°
26
70°
55°
27
71°
58°
28
74°
55°
29
75°
54°
30
77°
57°
31
80°
60°
1
79°
56°
2
80°
61°
3
82°
62°
4
81°
61°
5
77°
61°
6
75°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ames
Ames's May 2026 forecast shows daily high temperatures ranging from 66° to 84°, with overnight lows between 40° and 62°. The average high for May is 74° with an average low of 54°. 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 Ames. See also: June | July | August.