S
M
T
W
T
F
S
26
83°
65°
27
80°
60°
28
71°
52°
29
67°
45°
30
70°
45°
1
70°
47°
2
73°
47°
3
88°
51°
4
86°
60°
5
72°
50°
6
66°
48°
7
79°
45°
8
89°
51°
9
88°
48°
10
67°
53°
11
79°
45°
12
88°
54°
13
85°
61°
14
95°
63°
15
90°
71°
16
92°
66°
17
92°
73°
18
93°
64°
19
64°
53°
20
65°
55°
21
65°
57°
22
83°
59°
23
79°
60°
24
85°
62°
25
89°
62°
26
89°
64°
27
84°
66°
28
79°
62°
29
86°
64°
30
85°
61°
31
82°
60°
1
81°
58°
2
80°
58°
3
83°
59°
4
85°
61°
5
87°
64°
6
89°
63°
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 79° to 89°, with overnight lows between 58° and 66°. The average high for May is 85° with an average low of 62°. 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.