S
M
T
W
T
F
S
27
95°
75°
28
81°
70°
29
81°
68°
30
82°
64°
1
91°
66°
2
93°
73°
3
93°
75°
4
97°
75°
5
95°
73°
6
97°
75°
7
99°
75°
8
100°
73°
9
100°
77°
10
91°
75°
11
86°
70°
12
79°
66°
13
75°
66°
14
75°
56°
15
86°
55°
16
100°
72°
17
79°
68°
18
82°
64°
19
84°
64°
20
90°
68°
21
93°
75°
22
86°
68°
23
79°
59°
24
79°
56°
25
81°
57°
26
85°
57°
27
86°
59°
28
87°
60°
29
86°
59°
30
79°
57°
31
80°
49°
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 87°, with overnight lows between 49° and 60°. The average high for October is 83° with an average low of 57°. 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.