S
M
T
W
T
F
S
27
77°
51°
28
75°
48°
29
75°
49°
30
79°
49°
1
78°
48°
2
79°
49°
3
79°
48°
4
78°
47°
5
68°
44°
6
70°
47°
7
66°
43°
8
71°
41°
9
73°
42°
10
69°
40°
11
69°
33°
12
63°
28°
13
61°
28°
14
58°
31°
15
60°
35°
16
64°
34°
17
66°
38°
18
66°
41°
19
70°
41°
20
67°
33°
21
60°
33°
22
65°
31°
23
63°
38°
24
69°
35°
25
70°
39°
26
64°
37°
27
66°
37°
28
68°
38°
29
68°
37°
30
67°
32°
31
65°
31°
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 58° to 79°, with overnight lows between 28° and 51°. The average high for October is 69° with an average low of 39°. 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.
