S
M
T
W
T
F
S
26
66°
41°
27
63°
45°
28
57°
39°
29
63°
36°
30
72°
39°
1
64°
45°
2
61°
41°
3
57°
48°
4
55°
46°
5
52°
41°
6
55°
43°
7
57°
43°
8
61°
43°
9
61°
46°
10
55°
39°
11
52°
36°
12
59°
34°
13
54°
43°
14
N/A
15
55°
38°
16
55°
45°
17
58°
43°
18
56°
51°
19
64°
52°
20
66°
51°
21
71°
55°
22
74°
54°
23
73°
54°
24
72°
52°
25
70°
50°
26
69°
51°
27
60°
44°
28
59°
45°
29
59°
44°
30
60°
46°
31
60°
49°
1
64°
51°
2
67°
51°
3
68°
52°
4
67°
51°
5
67°
51°
6
64°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Wheaton Aston
Wheaton Aston's May 2026 forecast shows daily high temperatures ranging from 55° to 74°, with overnight lows between 38° and 55°. The average high for May is 64° with an average low of 49°. 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 Wheaton Aston. See also: June | July | August.