S
M
T
W
T
F
S
26
64°
39°
27
68°
41°
28
59°
41°
29
63°
39°
30
66°
46°
1
73°
45°
2
70°
46°
3
65°
52°
4
65°
47°
5
62°
44°
6
57°
41°
7
61°
45°
8
62°
46°
9
62°
46°
10
60°
44°
11
61°
47°
12
59°
47°
13
59°
47°
14
60°
45°
15
59°
46°
16
58°
47°
17
59°
43°
18
59°
42°
19
60°
46°
20
58°
42°
21
58°
42°
22
59°
43°
23
60°
44°
24
62°
48°
25
62°
48°
26
63°
49°
27
63°
47°
28
61°
44°
29
62°
43°
30
61°
46°
31
67°
48°
1
66°
48°
2
67°
50°
3
67°
47°
4
62°
48°
5
64°
49°
6
67°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Colney Heath
Colney Heath's May 2026 forecast shows daily high temperatures ranging from 57° to 67°, with overnight lows between 41° and 52°. The average high for May is 62° with an average low of 46°. 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 Colney Heath. See also: June | July | August.
