S
M
T
W
T
F
S
26
73°
56°
27
79°
55°
28
77°
61°
29
69°
55°
30
63°
46°
1
62°
47°
2
56°
42°
3
66°
37°
4
80°
53°
5
71°
59°
6
63°
47°
7
64°
45°
8
74°
44°
9
78°
57°
10
77°
62°
11
74°
55°
12
78°
52°
13
76°
57°
14
67°
48°
15
74°
47°
16
84°
62°
17
89°
66°
18
89°
69°
19
91°
69°
20
76°
63°
21
67°
56°
22
69°
60°
23
77°
66°
24
77°
66°
25
79°
65°
26
75°
67°
27
86°
65°
28
84°
58°
29
79°
60°
30
82°
57°
31
80°
59°
1
84°
58°
2
83°
60°
3
82°
63°
4
81°
67°
5
82°
66°
6
80°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Algonquin
Algonquin's May 2026 forecast shows daily high temperatures ranging from 79° to 86°, with overnight lows between 57° and 67°. The average high for May is 82° with an average low of 62°. 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 Algonquin. See also: June | July | August.
