S
M
T
W
T
F
S
26
58°
30°
27
70°
30°
28
68°
57°
29
60°
48°
30
48°
40°
1
53°
29°
2
46°
34°
3
52°
37°
4
70°
46°
5
70°
45°
6
49°
43°
7
51°
38°
8
52°
34°
9
65°
38°
10
53°
42°
11
54°
29°
12
55°
29°
13
67°
46°
14
52°
44°
15
58°
46°
16
76°
39°
17
74°
55°
18
88°
54°
19
81°
65°
20
67°
43°
21
59°
36°
22
69°
32°
23
65°
44°
24
60°
48°
25
65°
52°
26
78°
51°
27
75°
54°
28
65°
48°
29
64°
44°
30
62°
44°
31
66°
45°
1
67°
45°
2
70°
51°
3
71°
57°
4
75°
58°
5
74°
61°
6
74°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Watertown Town
Watertown Town's May 2026 forecast shows daily high temperatures ranging from 62° to 75°, with overnight lows between 44° and 61°. The average high for May is 69° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Watertown Town. See also: June | July | August.