S
M
T
W
T
F
S
27
97°
74°
28
86°
69°
29
86°
68°
30
88°
69°
1
94°
69°
2
99°
70°
3
100°
71°
4
99°
70°
5
97°
70°
6
99°
70°
7
101°
69°
8
99°
70°
9
91°
61°
10
92°
62°
11
92°
63°
12
94°
65°
13
95°
66°
14
94°
65°
15
93°
65°
16
91°
63°
17
87°
62°
18
82°
54°
19
82°
56°
20
84°
57°
21
85°
59°
22
86°
60°
23
81°
56°
24
80°
53°
25
79°
50°
26
79°
51°
27
81°
52°
28
82°
53°
29
84°
54°
30
84°
56°
31
78°
47°
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 78° to 101°, with overnight lows between 47° and 74°. The average high for October is 89° with an average low of 62°. 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.