S
M
T
W
T
F
S
31
88°
72°
1
89°
70°
2
91°
69°
3
82°
62°
4
86°
65°
5
85°
66°
6
88°
66°
7
89°
67°
8
88°
68°
9
90°
70°
10
89°
68°
11
89°
69°
12
87°
71°
13
89°
70°
14
86°
68°
15
88°
71°
16
89°
70°
17
88°
71°
18
90°
71°
19
90°
72°
20
89°
72°
21
90°
71°
22
91°
72°
23
91°
72°
24
90°
71°
25
90°
72°
26
89°
72°
27
90°
71°
28
91°
72°
29
88°
72°
30
89°
71°
1
89°
72°
2
88°
72°
3
90°
71°
4
90°
72°
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 82° to 91°, with overnight lows between 62° and 72°. The average high for June is 89° with an average low of 70°. 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.