S
M
T
W
T
F
S
26
59°
42°
27
68°
37°
28
66°
40°
29
65°
45°
30
53°
47°
1
64°
47°
2
55°
46°
3
56°
42°
4
70°
42°
5
74°
47°
6
69°
56°
7
65°
50°
8
63°
44°
9
63°
43°
10
66°
52°
11
63°
43°
12
64°
44°
13
65°
46°
14
62°
51°
15
63°
47°
16
76°
45°
17
89°
60°
18
82°
61°
19
93°
62°
20
93°
61°
21
67°
54°
22
65°
51°
23
64°
50°
24
56°
55°
25
70°
54°
26
79°
58°
27
83°
60°
28
74°
51°
29
71°
51°
30
68°
51°
31
68°
50°
1
70°
53°
2
69°
54°
3
73°
57°
4
75°
57°
5
73°
58°
6
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Barrington
Barrington's May 2026 forecast shows daily high temperatures ranging from 56° to 83°, with overnight lows between 50° and 60°. The average high for May is 72° with an average low of 55°. 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 Barrington. See also: June | July | August.