S
M
T
W
T
F
S
26
80°
53°
27
83°
62°
28
66°
54°
29
67°
48°
30
66°
41°
1
64°
43°
2
62°
44°
3
75°
42°
4
78°
57°
5
69°
47°
6
64°
44°
7
68°
40°
8
78°
49°
9
82°
56°
10
71°
53°
11
77°
45°
12
82°
51°
13
74°
54°
14
73°
47°
15
82°
54°
16
81°
69°
17
87°
64°
18
79°
65°
19
83°
62°
20
68°
56°
21
68°
55°
22
69°
60°
23
74°
64°
24
79°
57°
25
83°
63°
26
78°
66°
27
80°
66°
28
81°
63°
29
77°
61°
30
77°
61°
31
79°
60°
1
80°
58°
2
80°
63°
3
81°
61°
4
82°
62°
5
84°
61°
6
83°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fairview Heights
Fairview Heights's May 2026 forecast shows daily high temperatures ranging from 77° to 84°, with overnight lows between 57° and 66°. The average high for May is 80° 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 Fairview Heights. See also: June | July | August.
