S
M
T
W
T
F
S
31
75°
55°
1
76°
56°
2
79°
58°
3
78°
57°
4
79°
56°
5
74°
52°
6
75°
49°
7
74°
47°
8
69°
55°
9
69°
49°
10
70°
48°
11
68°
49°
12
71°
55°
13
75°
57°
14
76°
57°
15
79°
59°
16
79°
55°
17
77°
58°
18
79°
61°
19
77°
58°
20
79°
55°
21
75°
51°
22
74°
53°
23
76°
55°
24
78°
50°
25
75°
52°
26
76°
60°
27
80°
55°
28
76°
55°
29
79°
63°
30
85°
60°
1
78°
55°
2
79°
64°
3
81°
63°
4
85°
64°
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 85°, with overnight lows between 47° and 64°. The average high for June is 76° with an average low of 56°. 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.