S
M
T
W
T
F
S
31
68°
61°
1
79°
59°
2
82°
54°
3
85°
66°
4
78°
63°
5
78°
59°
6
85°
64°
7
87°
68°
8
81°
65°
9
84°
66°
10
85°
67°
11
83°
66°
12
84°
63°
13
80°
64°
14
80°
64°
15
82°
60°
16
78°
58°
17
82°
61°
18
75°
60°
19
76°
62°
20
82°
56°
21
73°
54°
22
74°
61°
23
80°
65°
24
84°
64°
25
84°
61°
26
75°
58°
27
77°
61°
28
79°
65°
29
79°
65°
30
80°
64°
1
77°
64°
2
79°
65°
3
84°
66°
4
85°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Watertown
Watertown's June 2026 forecast shows daily high temperatures ranging from 73° to 87°, with overnight lows between 54° and 68°. The average high for June is 80° with an average low of 63°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Watertown. See also: July | August | September.