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Heathrow - Airport Weather Station in the suburbs of West London

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Climate data for Heathrow Airport
WMO ID: 03772; coordinates 51°28′45″N 0°27′02″W / 51.47921°N 0.45057°W / 51.47921; -0.45057 (Met Office LHR); elevation: 25 m (82 ft); 1991–2020 normals, extremes 1948–present
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °C (°F) 16.0
(60.8)
20.1
(68.2)
23.8
(74.8)
28.5
(83.3)
31.8
(89.2)
34.8
(94.6)
40.2
(104.4)
37.9
(100.2)
33.0
(91.4)
28.8
(83.8)
18.6
(65.5)
16.6
(61.9)
40.2
(104.4)
Mean daily maximum °C (°F) 8.4
(47.1)
9.0
(48.2)
11.7
(53.1)
15.0
(59.0)
18.4
(65.1)
21.6
(70.9)
23.9
(75.0)
23.4
(74.1)
20.2
(68.4)
15.8
(60.4)
11.5
(52.7)
8.8
(47.8)
15.7
(60.3)
Daily mean °C (°F) 5.6
(42.1)
5.8
(42.4)
7.9
(46.2)
10.5
(50.9)
13.7
(56.7)
16.8
(62.2)
19.0
(66.2)
18.7
(65.7)
15.9
(60.6)
12.3
(54.1)
8.4
(47.1)
5.9
(42.6)
11.7
(53.1)
Mean daily minimum °C (°F) 2.7
(36.9)
2.7
(36.9)
4.1
(39.4)
6.0
(42.8)
9.1
(48.4)
12.0
(53.6)
14.2
(57.6)
14.1
(57.4)
11.6
(52.9)
8.8
(47.8)
5.3
(41.5)
3.1
(37.6)
7.8
(46.0)
Record low °C (°F) −24
(−11)
−13.6
(7.5)
−8.1
(17.4)
−6.6
(20.1)
−0.9
(30.4)
1.5
(34.7)
5.6
(42.1)
5.9
(42.6)
1.8
(35.2)
−3.3
(26.1)
−7.0
(19.4)
−17.8
(0.0)
−24
(−11)
Average precipitation mm (inches) 58.8
(2.31)
45.0
(1.77)
38.8
(1.53)
42.3
(1.67)
45.9
(1.81)
47.3
(1.86)
45.8
(1.80)
52.8
(2.08)
49.6
(1.95)
65.1
(2.56)
66.6
(2.62)
57.1
(2.25)
615.0
(24.21)
Average precipitation days (≥ 1.0 mm) 11.5 9.5 8.5 8.8 8.0 8.3 7.9 8.4 7.9 10.8 11.2 10.8 111.7
Mean monthly sunshine hours 61.1 78.8 124.5 176.7 207.5 208.4 217.8 202.1 157.1 115.2 70.7 55.0 1,674.8
Source 1: Met Office [1]
Source 2: KNMI [2][3]
  1. ^ "London Heathrow Airport". Met Office. Retrieved 17 September 2014.
  2. ^ "Heathrow Airport Extreme Values". KNMI. Retrieved 29 November 2015.
  3. ^ "Heathrow 1981–2010 mean maximum and minimum values". KNMI. Retrieved 28 December 2017.