S
M
T
W
T
F
S
31
72°
55°
1
72°
54°
2
68°
54°
3
64°
54°
4
64°
52°
5
63°
52°
6
61°
50°
7
64°
50°
8
61°
48°
9
61°
45°
10
61°
46°
11
61°
46°
12
68°
54°
13
66°
52°
14
66°
50°
15
68°
50°
16
75°
55°
17
72°
59°
18
80°
60°
19
84°
60°
20
78°
59°
21
84°
61°
22
88°
67°
23
90°
63°
24
88°
62°
25
87°
62°
26
90°
61°
27
89°
65°
28
80°
59°
29
80°
58°
30
81°
59°
1
66°
53°
2
67°
51°
3
66°
49°
4
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in London Colney
London Colney's June 2026 forecast shows daily high temperatures ranging from 66° to 90°, with overnight lows between 49° and 67°. The average high for June is 80° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in London Colney. See also: July | August | September.