S
M
T
W
T
F
S
27
74°
43°
28
76°
54°
29
77°
50°
30
69°
62°
1
72°
51°
2
66°
40°
3
67°
38°
4
69°
47°
5
64°
40°
6
76°
51°
7
75°
49°
8
68°
40°
9
70°
38°
10
85°
53°
11
82°
58°
12
82°
59°
13
67°
55°
14
60°
52°
15
55°
49°
16
54°
33°
17
60°
30°
18
68°
41°
19
66°
39°
20
64°
39°
21
73°
38°
22
65°
44°
23
73°
48°
24
74°
47°
25
68°
50°
26
53°
43°
27
57°
43°
28
74°
45°
29
65°
41°
30
56°
39°
31
61°
48°
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 56° to 61°, with overnight lows between 39° and 48°. The average high for October is 59° with an average low of 44°. 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.
