S
M
T
W
T
F
S
26
54°
39°
27
44°
36°
28
47°
35°
29
41°
32°
30
41°
25°
1
51°
21°
2
64°
23°
3
64°
32°
4
59°
33°
5
37°
28°
6
39°
28°
7
49°
21°
8
60°
30°
9
48°
37°
10
43°
29°
11
58°
20°
12
51°
37°
13
64°
36°
14
74°
42°
15
79°
54°
16
59°
34°
17
60°
29°
18
53°
44°
19
49°
38°
20
59°
38°
21
66°
37°
22
66°
42°
23
56°
40°
24
74°
48°
25
81°
54°
26
84°
51°
27
79°
49°
28
80°
47°
29
79°
47°
30
78°
49°
31
73°
48°
1
77°
51°
2
78°
48°
3
73°
49°
4
74°
47°
5
70°
44°
6
64°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Northwest St. Louis Ut
Northwest St. Louis Ut's May 2026 forecast shows daily high temperatures ranging from 56° to 84°, with overnight lows between 40° and 54°. The average high for May is 75° with an average low of 48°. 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 Northwest St. Louis Ut. See also: June | July | August.
