S
M
T
W
T
F
S
26
66°
45°
27
70°
46°
28
63°
46°
29
64°
46°
30
70°
52°
1
75°
46°
2
72°
50°
3
66°
54°
4
61°
54°
5
61°
52°
6
57°
46°
7
61°
45°
8
66°
46°
9
70°
46°
10
55°
41°
11
55°
36°
12
61°
37°
13
55°
45°
14
57°
43°
15
57°
43°
16
57°
39°
17
61°
48°
18
57°
46°
19
66°
55°
20
72°
53°
21
77°
58°
22
85°
64°
23
84°
62°
24
87°
59°
25
83°
59°
26
83°
58°
27
80°
57°
28
77°
56°
29
71°
53°
30
72°
54°
31
73°
55°
1
61°
44°
2
62°
44°
3
64°
48°
4
66°
51°
5
68°
52°
6
69°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hounslow
Hounslow's May 2026 forecast shows daily high temperatures ranging from 61° to 87°, with overnight lows between 44° and 64°. The average high for May is 74° with an average low of 54°. 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 Hounslow. See also: June | July | August.