Daily Data Tables - Day Maximum (09-21) / °C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Lowest
1.6
4.6
8.9
12.2
12.3
16.2
23.3
26.9
Highest
11.2
17.3
18.5
26.1
35.2
35.8
34.8
27.7
Mean
7.5
10.3
12.8
17.1
21.3
24.6
28.6
27.3
Cumul
7.5
8.8
10.2
11.9
13.9
15.6
17.5
17.6
Day Maximum (09-21) in London, NW3, for every available day of 2026 along with monthly summary: lowest, highest, mean, and the cumulative value for the year to the month's end. Data for Day Maximum (09-21) begins in 1881.
Values for recent days are subject to quality control and may be adjusted at any time.
Highest air temperature during the daytime window 09:00 to 21:00 local time.