S
M
T
W
T
F
S
26
63°
46°
27
76°
45°
28
77°
54°
29
62°
49°
30
54°
44°
1
52°
38°
2
47°
37°
3
63°
37°
4
74°
50°
5
74°
60°
6
60°
47°
7
63°
41°
8
64°
46°
9
70°
51°
10
65°
48°
11
65°
42°
12
72°
42°
13
72°
48°
14
57°
45°
15
70°
44°
16
74°
52°
17
87°
60°
18
90°
67°
19
90°
68°
20
71°
51°
21
70°
50°
22
66°
53°
23
67°
53°
24
73°
62°
25
78°
56°
26
82°
63°
27
78°
58°
28
79°
50°
29
75°
54°
30
71°
50°
31
72°
51°
1
75°
54°
2
74°
55°
3
76°
58°
4
75°
59°
5
78°
60°
6
79°
54°
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 71° to 82°, with overnight lows between 50° and 63°. The average high for May 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 May weather will actually feel in Rochester. See also: June | July | August.