S
M
T
W
T
F
S
26
64°
46°
27
65°
48°
28
60°
47°
29
63°
48°
30
68°
49°
1
65°
50°
2
68°
49°
3
67°
49°
4
63°
47°
5
62°
47°
6
61°
45°
7
58°
44°
8
59°
42°
9
59°
40°
10
60°
46°
11
64°
47°
12
64°
46°
13
65°
44°
14
62°
41°
15
65°
43°
16
67°
44°
17
67°
47°
18
68°
48°
19
68°
48°
20
65°
47°
21
64°
45°
22
65°
48°
23
63°
47°
24
66°
48°
25
67°
49°
26
67°
49°
27
65°
46°
28
68°
50°
29
69°
50°
30
68°
47°
31
70°
50°
1
70°
49°
2
67°
47°
3
65°
48°
4
67°
47°
5
67°
47°
6
67°
49°
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 58° to 70°, with overnight lows between 40° and 50°. The average high for May is 65° with an average low of 47°. 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.