S
M
T
W
T
F
S
27
72°
53°
28
75°
50°
29
72°
51°
30
71°
52°
1
74°
48°
2
73°
42°
3
70°
40°
4
60°
38°
5
59°
41°
6
60°
43°
7
61°
47°
8
60°
38°
9
66°
37°
10
69°
49°
11
65°
44°
12
65°
46°
13
Hist. Avg.
61°
41°
14
Hist. Avg.
61°
40°
15
Hist. Avg.
60°
40°
16
Hist. Avg.
60°
40°
17
Hist. Avg.
59°
39°
18
Hist. Avg.
59°
39°
19
Hist. Avg.
58°
38°
20
Hist. Avg.
58°
38°
21
Hist. Avg.
57°
38°
22
Hist. Avg.
57°
37°
23
Hist. Avg.
56°
37°
24
Hist. Avg.
56°
37°
25
Hist. Avg.
55°
36°
26
Hist. Avg.
55°
36°
27
Hist. Avg.
54°
36°
28
Hist. Avg.
54°
35°
29
Hist. Avg.
53°
35°
30
Hist. Avg.
53°
34°
31
Hist. Avg.
52°
34°
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 59° to 75°, with overnight lows between 37° and 53°. The average high for October is 67° with an average low of 45°. 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.