S
M
T
W
T
F
S
27
98°
70°
28
93°
70°
29
93°
68°
30
97°
69°
1
99°
69°
2
99°
68°
3
98°
68°
4
98°
69°
5
97°
68°
6
95°
67°
7
93°
64°
8
89°
65°
9
91°
61°
10
86°
56°
11
89°
62°
12
94°
65°
13
83°
60°
14
82°
57°
15
81°
54°
16
82°
58°
17
82°
59°
18
81°
56°
19
81°
55°
20
82°
57°
21
81°
56°
22
81°
56°
23
80°
49°
24
81°
48°
25
81°
47°
26
79°
50°
27
81°
49°
28
82°
50°
29
82°
48°
30
83°
49°
31
82°
52°
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 99°, with overnight lows between 47° and 70°. The average high for October is 87° 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.