S
M
T
W
T
F
S
26
61°
40°
27
74°
38°
28
63°
54°
29
54°
43°
30
50°
37°
1
47°
32°
2
47°
30°
3
56°
31°
4
68°
58°
5
63°
43°
6
46°
39°
7
50°
38°
8
53°
42°
9
55°
45°
10
55°
46°
11
56°
43°
12
57°
44°
13
59°
48°
14
58°
47°
15
57°
48°
16
61°
49°
17
63°
48°
18
69°
52°
19
65°
49°
20
71°
54°
21
69°
53°
22
64°
46°
23
61°
45°
24
62°
46°
25
62°
48°
26
63°
48°
27
63°
47°
28
64°
47°
29
64°
48°
30
65°
50°
31
67°
52°
1
66°
51°
2
67°
52°
3
69°
58°
4
70°
55°
5
68°
58°
6
75°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Tonawanda
Tonawanda's May 2026 forecast shows daily high temperatures ranging from 46° to 75°, with overnight lows between 38° and 59°. The average high for May is 63° 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 Tonawanda. See also: June | July | August.
