S
M
T
W
T
F
S
26
61°
50°
27
68°
46°
28
70°
37°
29
72°
52°
30
72°
50°
1
63°
43°
2
54°
45°
3
63°
37°
4
77°
43°
5
79°
54°
6
77°
59°
7
66°
52°
8
70°
46°
9
73°
46°
10
82°
54°
11
63°
41°
12
72°
36°
13
77°
41°
14
72°
46°
15
75°
51°
16
87°
61°
17
90°
65°
18
93°
63°
19
92°
63°
20
92°
66°
21
81°
61°
22
80°
63°
23
81°
62°
24
79°
60°
25
81°
62°
26
84°
62°
27
85°
60°
28
85°
65°
29
85°
65°
30
84°
64°
31
84°
64°
1
79°
63°
2
80°
64°
3
80°
63°
4
79°
61°
5
80°
65°
6
86°
67°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Middlesex
Middlesex's May 2026 forecast shows daily high temperatures ranging from 72° to 93°, with overnight lows between 46° and 67°. The average high for May is 83° 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 Middlesex. See also: June | July | August.