S
M
T
W
T
F
S
27
103°
79°
28
102°
78°
29
102°
80°
30
101°
82°
1
101°
77°
2
95°
78°
3
95°
78°
4
80°
77°
5
84°
76°
6
95°
76°
7
90°
77°
8
94°
77°
9
95°
74°
10
94°
73°
11
92°
77°
12
96°
77°
13
97°
80°
14
96°
76°
15
93°
74°
16
90°
66°
17
79°
64°
18
82°
66°
19
87°
71°
20
86°
73°
21
87°
72°
22
89°
74°
23
89°
69°
24
86°
68°
25
87°
67°
26
79°
66°
27
82°
60°
28
84°
59°
29
83°
63°
30
84°
67°
31
82°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in McAllen
McAllen's October 2026 forecast shows daily high temperatures ranging from 79° to 97°, with overnight lows between 59° and 80°. The average high for October is 86° with an average low of 68°. 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 McAllen. See also: November | December | January.
