S
M
T
W
T
F
S
26
85°
72°
27
92°
74°
28
89°
76°
29
79°
60°
30
64°
59°
1
59°
52°
2
77°
47°
3
81°
53°
4
82°
59°
5
89°
71°
6
76°
55°
7
67°
56°
8
75°
55°
9
90°
64°
10
88°
64°
11
78°
62°
12
84°
57°
13
90°
60°
14
90°
65°
15
83°
65°
16
88°
69°
17
88°
73°
18
90°
77°
19
92°
69°
20
79°
66°
21
79°
67°
22
85°
67°
23
82°
62°
24
89°
64°
25
90°
64°
26
87°
64°
27
82°
64°
28
89°
64°
29
94°
72°
30
94°
71°
31
93°
74°
1
92°
70°
2
90°
68°
3
84°
69°
4
86°
71°
5
86°
70°
6
89°
72°
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 84° to 94°, with overnight lows between 68° and 74°. The average high for May is 90° with an average low of 71°. 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.