| Climate data for RAF Northolt WMO ID: 03672; coordinates 51°32′55″N 0°25′01″W / 51.54870°N 0.41689°W; elevation: 40 m (131 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) | 16.2 (61.2) |
20.8 (69.4) |
24.1 (75.4) |
28.9 (84.0) |
30.6 (87.1) |
35.0 (95.0) |
40.0 (104.0) |
37.7 (99.9) |
32.7 (90.9) |
29.0 (84.2) |
18.8 (65.8) |
16.8 (62.2) |
40.0 (104.0) |
| Mean daily maximum °C (°F) | 8.2 (46.8) |
8.8 (47.8) |
11.6 (52.9) |
14.8 (58.6) |
18.1 (64.6) |
21.2 (70.2) |
23.5 (74.3) |
23.1 (73.6) |
20.0 (68.0) |
15.6 (60.1) |
11.3 (52.3) |
8.6 (47.5) |
15.4 (59.7) |
| Daily mean °C (°F) | 5.1 (41.2) |
5.4 (41.7) |
7.6 (45.7) |
10.0 (50.0) |
13.2 (55.8) |
16.2 (61.2) |
18.4 (65.1) |
18.1 (64.6) |
15.3 (59.5) |
11.8 (53.2) |
7.9 (46.2) |
5.5 (41.9) |
11.2 (52.2) |
| Mean daily minimum °C (°F) | 2.0 (35.6) |
2.0 (35.6) |
3.5 (38.3) |
5.2 (41.4) |
8.3 (46.9) |
11.3 (52.3) |
13.4 (56.1) |
13.2 (55.8) |
10.6 (51.1) |
7.9 (46.2) |
4.5 (40.1) |
2.3 (36.1) |
7.0 (44.6) |
| Record low °C (°F) | −16.1 (3.0) |
−13.9 (7.0) |
−8.0 (17.6) |
−4.7 (23.5) |
−2.7 (27.1) |
0.0 (32.0) |
4.4 (39.9) |
3.0 (37.4) |
0.0 (32.0) |
−5.5 (22.1) |
−7.5 (18.5) |
−17.4 (0.7) |
−17.4 (0.7) |
| Average precipitation mm (inches) | 62.9 (2.48) |
49.1 (1.93) |
42.4 (1.67) |
45.6 (1.80) |
51.8 (2.04) |
50.2 (1.98) |
48.6 (1.91) |
56.6 (2.23) |
51.4 (2.02) |
70.2 (2.76) |
71.4 (2.81) |
63.1 (2.48) |
663.3 (26.11) |
| Average precipitation days (≥ 1.0 mm) | 11.6 | 10.1 | 9.1 | 9.4 | 8.6 | 8.6 | 8.1 | 9.4 | 8.5 | 10.7 | 11.6 | 11.3 | 117.0 |
| Source 1: Met Office [1] | |||||||||||||
| Source 2: Starlings Roost Weather[2][3] | |||||||||||||
References
- ^ "Northolt 1991–2020 averages". Met Office. Retrieved 6 January 2022.
- ^ "Monthly Extreme Maximum Temperature". Starlings Roost Weather. Retrieved 3 February 2023.
- ^ "Monthly Extreme Minimum Temperature". Starlings Roost Weather. Retrieved 3 February 2023.