S
M
T
W
T
F
S
26
69°
53°
27
65°
45°
28
55°
41°
29
52°
39°
30
48°
39°
1
52°
37°
2
64°
37°
3
70°
52°
4
67°
38°
5
51°
34°
6
50°
38°
7
56°
39°
8
60°
42°
9
62°
41°
10
63°
46°
11
66°
48°
12
67°
49°
13
68°
49°
14
65°
48°
15
66°
51°
16
81°
58°
17
73°
51°
18
70°
52°
19
73°
50°
20
69°
49°
21
67°
44°
22
64°
43°
23
65°
45°
24
65°
44°
25
66°
45°
26
65°
46°
27
65°
46°
28
66°
47°
29
68°
54°
30
67°
52°
31
68°
49°
1
72°
54°
2
76°
57°
3
77°
58°
4
79°
59°
5
79°
60°
6
78°
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 50° to 81°, with overnight lows between 34° and 60°. The average high for May is 68° with an average low of 49°. 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.