S
M
T
W
T
F
S
31
66°
41°
1
70°
37°
2
74°
49°
3
76°
54°
4
77°
57°
5
77°
61°
6
75°
59°
7
75°
60°
8
77°
58°
9
76°
63°
10
79°
63°
11
76°
62°
12
75°
60°
13
77°
59°
14
76°
57°
15
69°
52°
16
68°
52°
17
69°
54°
18
71°
56°
19
72°
60°
20
72°
54°
21
74°
60°
22
77°
62°
23
73°
62°
24
75°
60°
25
72°
57°
26
71°
57°
27
74°
63°
28
73°
62°
29
74°
59°
30
72°
57°
1
73°
57°
2
74°
63°
3
78°
65°
4
81°
63°
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 68° to 81°, with overnight lows between 49° and 65°. The average high for June is 74° with an average low of 59°. 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.