S
M
T
W
T
F
S
26
66°
36°
27
75°
40°
28
75°
50°
29
73°
50°
30
56°
46°
1
58°
41°
2
52°
42°
3
53°
41°
4
72°
47°
5
78°
54°
6
55°
43°
7
59°
42°
8
57°
37°
9
61°
34°
10
68°
47°
11
59°
37°
12
58°
39°
13
53°
43°
14
56°
52°
15
64°
50°
16
76°
59°
17
75°
44°
18
72°
63°
19
86°
57°
20
75°
46°
21
66°
47°
22
68°
49°
23
71°
49°
24
68°
51°
25
67°
53°
26
72°
60°
27
67°
49°
28
66°
50°
29
68°
56°
30
67°
57°
31
70°
54°
1
68°
53°
2
67°
50°
3
67°
49°
4
68°
49°
5
70°
58°
6
71°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Winooski
Winooski's May 2026 forecast shows daily high temperatures ranging from 56° to 86°, with overnight lows between 44° and 63°. The average high for May is 69° with an average low of 53°. 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 Winooski. See also: June | July | August.