S
M
T
W
T
F
S
27
98°
68°
28
90°
66°
29
90°
65°
30
91°
69°
1
90°
66°
2
89°
62°
3
91°
65°
4
90°
58°
5
88°
56°
6
85°
55°
7
86°
56°
8
87°
57°
9
88°
61°
10
91°
62°
11
93°
62°
12
93°
67°
13
92°
63°
14
88°
63°
15
91°
62°
16
89°
56°
17
85°
52°
18
84°
51°
19
84°
52°
20
85°
53°
21
86°
54°
22
89°
56°
23
89°
56°
24
88°
54°
25
86°
53°
26
80°
52°
27
81°
54°
28
81°
52°
29
83°
54°
30
81°
51°
31
77°
46°
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 77° to 98°, with overnight lows between 46° and 69°. The average high for October is 87° with an average low of 58°. 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.