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°
72°
11
89°
68°
12
86°
65°
13
80°
60°
14
80°
60°
15
85°
60°
16
91°
63°
17
92°
64°
18
91°
63°
19
92°
63°
20
93°
65°
21
94°
64°
22
93°
65°
23
85°
55°
24
86°
58°
25
86°
56°
26
87°
57°
27
87°
56°
28
88°
57°
29
87°
57°
30
85°
56°
31
85°
57°
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 80° to 94°, with overnight lows between 55° and 72°. The average high for October is 88° with an average low of 61°. 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.