S
M
T
W
T
F
S
27
66°
51°
28
66°
51°
29
65°
52°
30
66°
51°
1
67°
51°
2
66°
50°
3
66°
51°
4
65°
50°
5
66°
50°
6
65°
49°
7
64°
50°
8
64°
50°
9
63°
49°
10
63°
49°
11
62°
47°
12
59°
43°
13
57°
48°
14
61°
45°
15
61°
45°
16
56°
43°
17
58°
45°
18
56°
43°
19
56°
45°
20
57°
41°
21
55°
46°
22
56°
48°
23
60°
47°
24
60°
46°
25
59°
45°
26
58°
45°
27
57°
46°
28
59°
46°
29
59°
44°
30
58°
44°
31
56°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
October Weather in Colchester
Colchester's October 2026 forecast shows daily high temperatures ranging from 55° to 67°, with overnight lows between 41° and 52°. The average high for October is 61° with an average low of 47°. 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 Colchester. See also: November | December | January.