S
M
T
W
T
F
S
28
84°
53°
29
87°
52°
30
84°
59°
1
91°
68°
2
86°
69°
3
85°
69°
4
78°
59°
5
81°
54°
6
81°
61°
7
83°
60°
8
84°
65°
9
84°
66°
10
80°
58°
11
81°
52°
12
83°
60°
13
86°
70°
14
87°
69°
15
83°
65°
16
81°
64°
17
78°
63°
18
79°
62°
19
78°
64°
20
77°
64°
21
79°
62°
22
74°
60°
23
75°
59°
24
83°
66°
25
83°
66°
26
84°
68°
27
83°
67°
28
82°
67°
29
82°
66°
30
80°
66°
31
76°
65°
1
76°
66°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Watertown
Watertown's July 2026 forecast shows daily high temperatures ranging from 74° to 87°, with overnight lows between 52° and 70°. The average high for July is 81° with an average low of 64°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Watertown. See also: August | September | October.
