S
M
T
W
T
F
S
26
58°
31°
27
66°
35°
28
57°
49°
29
52°
41°
30
53°
41°
1
49°
33°
2
48°
28°
3
55°
26°
4
67°
41°
5
61°
45°
6
48°
32°
7
51°
37°
8
53°
41°
9
57°
44°
10
56°
40°
11
53°
39°
12
53°
40°
13
55°
42°
14
59°
46°
15
64°
48°
16
62°
48°
17
66°
49°
18
61°
48°
19
62°
49°
20
64°
47°
21
60°
43°
22
60°
43°
23
61°
44°
24
63°
46°
25
67°
50°
26
67°
48°
27
63°
46°
28
68°
49°
29
64°
49°
30
71°
51°
31
73°
55°
1
73°
53°
2
69°
51°
3
72°
54°
4
74°
56°
5
75°
57°
6
74°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Ajax
Ajax's May 2026 forecast shows daily high temperatures ranging from 51° to 75°, with overnight lows between 37° and 57°. The average high for May is 64° with an average low of 47°. 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 Ajax. See also: June | July | August.
