S
M
T
W
T
F
S
26
57°
42°
27
62°
35°
28
71°
36°
29
75°
41°
30
75°
41°
1
75°
41°
2
76°
41°
3
77°
54°
4
67°
52°
5
63°
46°
6
73°
39°
7
80°
44°
8
86°
49°
9
87°
55°
10
89°
53°
11
91°
56°
12
90°
56°
13
83°
59°
14
82°
49°
15
84°
50°
16
79°
54°
17
74°
54°
18
70°
48°
19
74°
43°
20
78°
42°
21
79°
48°
22
81°
53°
23
90°
64°
24
90°
65°
25
87°
61°
26
86°
61°
27
85°
56°
28
84°
46°
29
85°
50°
30
89°
53°
31
91°
55°
1
94°
57°
2
93°
56°
3
93°
55°
4
94°
56°
5
92°
52°
6
87°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Congress
Congress's May 2026 forecast shows daily high temperatures ranging from 84° to 94°, with overnight lows between 46° and 65°. The average high for May is 89° with an average low of 56°. 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 Congress. See also: June | July | August.