S
M
T
W
T
F
S
27
94°
70°
28
89°
59°
29
90°
60°
30
91°
64°
1
94°
68°
2
96°
71°
3
95°
63°
4
90°
62°
5
89°
62°
6
91°
61°
7
92°
65°
8
93°
64°
9
94°
58°
10
90°
56°
11
87°
55°
12
86°
56°
13
86°
57°
14
87°
59°
15
91°
60°
16
93°
61°
17
93°
60°
18
92°
60°
19
93°
61°
20
93°
54°
21
89°
49°
22
82°
51°
23
83°
54°
24
85°
57°
25
86°
53°
26
83°
57°
27
83°
53°
28
84°
56°
29
84°
56°
30
79°
52°
31
79°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Mesa
Mesa's October 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 49° and 71°. The average high for October is 89° with an average low of 59°. 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 Mesa. See also: November | December | January.