S
M
T
W
T
F
S
27
62°
53°
28
62°
54°
29
56°
52°
30
64°
54°
1
70°
59°
2
69°
52°
3
60°
42°
4
67°
37°
5
61°
46°
6
58°
37°
7
65°
34°
8
68°
53°
9
61°
48°
10
56°
37°
11
61°
40°
12
63°
48°
13
62°
45°
14
63°
48°
15
55°
40°
16
64°
43°
17
46°
29°
18
58°
29°
19
67°
34°
20
59°
35°
21
58°
30°
22
56°
29°
23
51°
29°
24
58°
28°
25
64°
29°
26
56°
37°
27
46°
29°
28
54°
43°
29
67°
51°
30
58°
36°
31
52°
36°
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 52° to 67°, with overnight lows between 36° and 51°. The average high for October is 58° 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 Colchester. See also: November | December | January.