S
M
T
W
T
F
S
26
64°
47°
27
76°
42°
28
74°
54°
29
60°
46°
30
55°
37°
1
53°
33°
2
49°
33°
3
61°
27°
4
73°
49°
5
73°
59°
6
60°
46°
7
60°
36°
8
67°
37°
9
70°
51°
10
66°
46°
11
67°
39°
12
70°
42°
13
72°
48°
14
63°
40°
15
68°
35°
16
72°
48°
17
84°
55°
18
89°
59°
19
88°
65°
20
73°
51°
21
67°
48°
22
61°
52°
23
77°
59°
24
73°
63°
25
77°
60°
26
79°
65°
27
72°
59°
28
76°
49°
29
77°
54°
30
77°
46°
31
72°
46°
1
74°
50°
2
75°
51°
3
72°
52°
4
73°
52°
5
81°
57°
6
81°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rochester
Rochester's May 2026 forecast shows daily high temperatures ranging from 72° to 81°, with overnight lows between 46° and 65°. The average high for May is 76° with an average low of 53°. 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 Rochester. See also: June | July | August.