S
M
T
W
T
F
S
26
63°
51°
27
71°
43°
28
64°
46°
29
69°
56°
30
73°
50°
1
70°
41°
2
63°
44°
3
67°
32°
4
79°
36°
5
82°
50°
6
73°
63°
7
61°
39°
8
70°
49°
9
78°
50°
10
80°
55°
11
65°
45°
12
66°
43°
13
65°
49°
14
71°
45°
15
76°
51°
16
78°
52°
17
76°
54°
18
79°
57°
19
79°
58°
20
78°
52°
21
73°
52°
22
70°
49°
23
71°
52°
24
71°
51°
25
72°
54°
26
74°
54°
27
76°
50°
28
78°
51°
29
80°
56°
30
78°
58°
31
76°
58°
1
74°
57°
2
78°
58°
3
79°
58°
4
76°
59°
5
76°
60°
6
77°
59°
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 61° to 80°, with overnight lows between 39° and 60°. The average high for May is 74° with an average low of 53°. 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.
