S
M
T
W
T
F
S
27
77°
54°
28
79°
53°
29
81°
52°
30
80°
53°
1
79°
52°
2
78°
51°
3
77°
52°
4
77°
52°
5
76°
54°
6
74°
49°
7
75°
42°
8
68°
45°
9
73°
47°
10
68°
44°
11
69°
49°
12
73°
48°
13
72°
40°
14
66°
39°
15
67°
45°
16
65°
48°
17
64°
49°
18
72°
41°
19
72°
41°
20
65°
38°
21
63°
37°
22
63°
38°
23
68°
44°
24
71°
45°
25
69°
36°
26
64°
35°
27
62°
40°
28
62°
36°
29
59°
33°
30
58°
31°
31
58°
33°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Ajax
Ajax's October 2026 forecast shows daily high temperatures ranging from 58° to 81°, with overnight lows between 31° and 54°. The average high for October is 70° with an average low of 44°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Ajax. See also: November | December | January.