S
M
T
W
T
F
S
26
87°
68°
27
85°
68°
28
88°
67°
29
89°
68°
30
89°
68°
31
88°
66°
1
85°
67°
2
87°
66°
3
87°
66°
4
88°
68°
5
89°
67°
6
90°
68°
7
87°
61°
8
88°
65°
9
87°
66°
10
88°
64°
11
83°
63°
12
82°
61°
13
87°
63°
14
88°
65°
15
86°
65°
16
83°
64°
17
82°
63°
18
87°
65°
19
88°
64°
20
82°
64°
21
86°
63°
22
83°
64°
23
81°
61°
24
86°
60°
25
87°
63°
26
87°
61°
27
85°
58°
28
81°
58°
29
81°
59°
30
80°
58°
31
82°
62°
1
84°
61°
2
79°
57°
3
78°
56°
4
78°
54°
5
79°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Ajax
Ajax's August 2026 forecast shows daily high temperatures ranging from 78° to 90°, with overnight lows between 54° and 68°. The average high for August is 85° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Ajax. See also: September | October | November.