S
M
T
W
T
F
S
26
72°
53°
27
71°
47°
28
57°
42°
29
60°
40°
30
56°
34°
1
55°
35°
2
64°
44°
3
72°
45°
4
73°
44°
5
71°
46°
6
66°
38°
7
58°
37°
8
61°
41°
9
66°
43°
10
68°
45°
11
67°
47°
12
66°
51°
13
65°
49°
14
66°
50°
15
64°
49°
16
66°
51°
17
65°
54°
18
72°
55°
19
73°
56°
20
75°
57°
21
76°
57°
22
75°
51°
23
67°
48°
24
65°
50°
25
66°
51°
26
69°
54°
27
70°
54°
28
69°
52°
29
71°
54°
30
80°
59°
31
72°
57°
1
74°
61°
2
79°
60°
3
73°
56°
4
73°
56°
5
74°
53°
6
73°
54°
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 55° to 80°, with overnight lows between 34° and 61°. The average high for May is 69° with an average low of 50°. 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.