S
M
T
W
T
F
S
26
71°
33°
27
57°
46°
28
56°
45°
29
70°
39°
30
79°
42°
1
74°
45°
2
77°
50°
3
86°
48°
4
77°
48°
5
65°
53°
6
62°
51°
7
69°
46°
8
63°
46°
9
72°
47°
10
66°
49°
11
75°
52°
12
83°
48°
13
57°
51°
14
59°
47°
15
52°
43°
16
55°
40°
17
65°
36°
18
70°
46°
19
65°
46°
20
70°
50°
21
79°
44°
22
78°
46°
23
68°
49°
24
77°
46°
25
60°
46°
26
64°
46°
27
76°
46°
28
78°
50°
29
62°
42°
30
68°
39°
31
68°
42°
1
80°
49°
2
83°
53°
3
79°
49°
4
75°
50°
5
76°
49°
6
73°
48°
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 60° to 83°, with overnight lows between 39° and 53°. The average high for May is 72° 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.