S
M
T
W
T
F
S
27
93°
71°
28
89°
71°
29
93°
71°
30
89°
74°
1
80°
68°
2
75°
67°
3
71°
67°
4
79°
69°
5
84°
63°
6
86°
61°
7
87°
59°
8
89°
64°
9
90°
61°
10
89°
62°
11
89°
66°
12
89°
69°
13
91°
75°
14
90°
76°
15
85°
62°
16
63°
45°
17
66°
45°
18
70°
48°
19
76°
50°
20
77°
55°
21
79°
56°
22
81°
59°
23
80°
63°
24
78°
58°
25
77°
58°
26
68°
51°
27
70°
54°
28
71°
55°
29
70°
50°
30
62°
47°
31
65°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Denison
Denison's October 2026 forecast shows daily high temperatures ranging from 62° to 81°, with overnight lows between 45° and 63°. The average high for October is 72° with an average low of 53°. 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 Denison. See also: November | December | January.
