Daily Data Tables - Night Minimum (21-09) / °C · Mean (all years)
Day
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1
5.0
3.7
3.7
4.6
7.7
11.2
14.5
14.7
12.2
11.9
10.1
4.0
2
4.3
3.4
3.3
5.6
8.5
11.6
14.1
15.1
12.5
11.0
7.9
4.1
3
3.4
3.6
3.1
5.5
7.1
11.8
13.7
14.9
13.7
10.6
7.5
4.4
4
3.2
4.1
3.1
5.9
7.3
10.8
13.9
15.0
13.4
10.8
7.5
3.4
5
3.2
4.2
2.5
6.4
7.1
10.8
14.6
14.5
12.9
11.3
6.9
3.8
6
3.1
4.3
3.9
6.3
8.0
10.5
14.1
14.1
12.9
10.6
6.9
4.2
7
3.5
2.7
3.8
5.9
8.6
11.0
14.2
14.0
13.0
10.0
8.1
5.5
8
4.4
2.8
3.7
5.8
9.5
11.4
14.4
14.3
12.8
10.6
6.4
4.9
9
3.9
3.6
5.2
6.6
9.3
10.7
14.8
14.3
13.1
9.7
6.7
5.0
10
2.5
3.2
6.0
5.8
9.5
12.2
15.1
14.0
13.1
9.8
7.7
4.6
11
3.3
2.3
4.9
6.6
8.3
11.9
14.5
14.2
12.8
9.9
7.1
3.8
12
4.8
2.3
5.4
6.4
7.9
12.0
14.3
15.9
12.1
9.0
8.4
3.6
13
4.3
3.0
5.7
6.0
8.6
12.1
14.6
14.9
11.7
9.9
8.1
3.9
14
2.8
2.5
4.0
6.4
8.1
12.5
14.6
15.1
11.5
9.3
8.3
3.9
15
3.5
4.4
5.2
7.1
8.3
12.3
14.1
14.9
11.4
8.8
8.1
4.9
16
3.7
5.1
6.1
6.7
8.5
12.2
14.4
14.5
12.4
8.9
6.8
5.6
17
2.3
4.8
5.4
6.5
8.9
13.3
15.1
14.0
11.7
10.2
6.9
4.0
18
1.7
5.2
4.7
6.1
9.4
13.9
15.1
15.3
11.9
9.3
6.3
5.4
19
2.3
3.7
5.0
6.8
9.6
12.9
15.5
14.3
12.0
10.7
5.6
5.0
20
1.5
5.9
5.7
5.8
9.9
13.0
15.5
14.6
12.7
9.6
5.1
4.6
21
1.2
5.8
4.9
6.1
10.4
13.4
14.6
14.5
11.9
9.8
5.1
6.0
22
2.6
6.0
5.7
6.6
10.7
13.2
14.9
14.4
11.1
8.9
5.1
6.5
23
2.9
5.4
4.8
7.3
10.6
13.3
14.9
15.1
11.3
9.6
4.9
6.6
24
3.6
4.8
4.6
7.3
10.7
13.9
15.3
13.8
11.1
10.2
6.4
6.0
25
3.4
4.8
4.8
6.7
10.6
14.2
15.2
13.4
10.8
9.3
5.2
5.3
26
3.8
3.8
4.9
5.9
10.9
14.7
15.1
14.2
11.2
9.0
4.4
4.6
27
3.6
3.4
4.4
5.7
11.2
15.0
15.4
13.5
11.0
9.0
5.8
4.8
28
4.0
3.6
4.8
6.4
11.1
14.8
14.8
13.7
11.1
9.2
4.2
4.4
29
4.6
6.7
5.2
6.4
11.6
13.7
14.1
13.2
11.0
10.1
4.9
4.9
30
3.0
6.1
6.3
11.4
14.1
14.4
12.6
10.2
9.1
3.2
4.9
31
3.0
6.3
11.6
14.8
12.0
9.1
5.8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Lowest
1.2
2.3
2.5
4.6
7.1
10.5
13.7
12.0
10.2
8.8
3.2
3.4
Highest
5.0
6.7
6.3
7.3
11.6
15.0
15.5
15.9
13.7
11.9
10.1
6.6
Mean
3.3
4.1
4.7
6.2
9.4
12.6
14.7
14.3
12.0
9.8
6.5
4.8
Cumul
3.3
3.7
4.0
4.6
5.6
6.7
7.9
8.7
9.1
9.1
8.9
8.6
Night Minimum (21-09) in London, NW3 — calendar-day mean across all years from 2009 onwards along with monthly summary: lowest, highest, mean, and the cumulative value for the year to the month's end.
Lowest air temperature overnight, from 21:00 to 09:00 local time.