S
M
T
W
T
F
S
26
45°
39°
27
50°
42°
28
51°
44°
29
49°
43°
30
47°
42°
1
44°
41°
2
45°
39°
3
51°
43°
4
58°
47°
5
54°
45°
6
48°
44°
7
52°
45°
8
52°
45°
9
57°
46°
10
52°
46°
11
51°
44°
12
53°
41°
13
53°
46°
14
55°
47°
15
55°
45°
16
57°
48°
17
58°
50°
18
64°
50°
19
61°
50°
20
57°
49°
21
51°
43°
22
53°
47°
23
54°
47°
24
54°
48°
25
54°
45°
26
56°
45°
27
71°
50°
28
61°
52°
29
79°
44°
30
69°
45°
31
74°
47°
1
75°
48°
2
76°
46°
3
76°
53°
4
81°
61°
5
80°
60°
6
74°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Southwest Middlesex
Southwest Middlesex's May 2026 forecast shows daily high temperatures ranging from 69° to 81°, with overnight lows between 44° and 61°. The average high for May is 76° with an average low of 51°. 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 Southwest Middlesex. See also: June | July | August.
