S
M
T
W
T
F
S
27
84°
59°
28
N/A
29
72°
55°
30
66°
57°
1
72°
52°
2
82°
46°
3
84°
59°
4
79°
52°
5
90°
59°
6
88°
61°
7
81°
59°
8
84°
55°
9
88°
55°
10
82°
55°
11
83°
56°
12
82°
47°
13
67°
47°
14
50°
41°
15
58°
40°
16
56°
38°
17
66°
44°
18
74°
46°
19
71°
45°
20
67°
44°
21
69°
44°
22
71°
47°
23
71°
44°
24
64°
34°
25
68°
40°
26
61°
38°
27
61°
36°
28
63°
38°
29
64°
38°
30
56°
37°
31
61°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Thornton
Thornton's October 2026 forecast shows daily high temperatures ranging from 50° to 83°, with overnight lows between 34° and 56°. The average high for October is 66° with an average low of 42°. 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 Thornton. See also: November | December | January.
