S
M
T
W
T
F
S
27
74°
51°
28
74°
50°
29
71°
51°
30
72°
52°
1
73°
40°
2
73°
38°
3
61°
40°
4
60°
39°
5
59°
38°
6
60°
36°
7
58°
37°
8
57°
36°
9
57°
36°
10
56°
34°
11
Hist. Avg.
59°
38°
12
Hist. Avg.
59°
38°
13
Hist. Avg.
58°
37°
14
Hist. Avg.
58°
37°
15
Hist. Avg.
58°
37°
16
Hist. Avg.
57°
36°
17
Hist. Avg.
57°
36°
18
Hist. Avg.
56°
36°
19
Hist. Avg.
56°
36°
20
Hist. Avg.
55°
35°
21
Hist. Avg.
55°
35°
22
Hist. Avg.
54°
35°
23
Hist. Avg.
54°
34°
24
Hist. Avg.
53°
34°
25
Hist. Avg.
53°
34°
26
Hist. Avg.
52°
33°
27
Hist. Avg.
52°
33°
28
Hist. Avg.
51°
32°
29
Hist. Avg.
50°
32°
30
Hist. Avg.
50°
32°
31
Hist. Avg.
49°
31°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Watertown
Watertown's October 2026 forecast shows daily high temperatures ranging from 56° to 74°, with overnight lows between 34° and 52°. The average high for October is 65° with an average low of 41°. 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 Watertown. See also: November | December | January.