The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
London Heathrow Airport, UKI
Content continues below
September
Average Temperature
High
19°
Feels 19
Low
10°
Feels 9
Average Precipitation
9 Days
Rain amount
44.3mm
Snow amount
0cm
Content continues below
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
20°
5
23°
6
25°
7
24°
8
21°
9
21°
10
21°
11
22°
12
21°
13
22°
14
22°
15
23°
16
22°
17
23°
18
23°
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Friday, September 4, 2026
Day
20°
Feels 20
Wind
28 km/h W
Gust
43 km/h
Humidity
52%
P.O.P
20%
Night
12°
Feels 11
Wind
15 km/h W
Gust
22 km/h
Humidity
88%
P.O.P
10%
Historical Averages
Sep 4
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.