Template:Aldergrove weatherbox
| Climate data for Belfast International Airport WMO ID: 03917; coordinates 54°39′50″N 6°13′30″W / 54.66376°N 6.22512°W; elevation: 63 m (207 ft); 1991–2020 normals, extremes 1930–present | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 14.5 (58.1) |
15.6 (60.1) |
20.2 (68.4) |
21.8 (71.2) |
26.1 (79.0) |
29.5 (85.1) |
30.8 (87.4) |
28.0 (82.4) |
27.1 (80.8) |
21.8 (71.2) |
17.1 (62.8) |
15.0 (59.0) |
30.8 (87.4) |
| Mean daily maximum °C (°F) | 7.3 (45.1) |
7.9 (46.2) |
9.7 (49.5) |
12.3 (54.1) |
15.2 (59.4) |
17.6 (63.7) |
19.1 (66.4) |
18.7 (65.7) |
16.6 (61.9) |
13.1 (55.6) |
9.8 (49.6) |
7.6 (45.7) |
12.9 (55.2) |
| Daily mean °C (°F) | 4.7 (40.5) |
4.9 (40.8) |
6.3 (43.3) |
8.5 (47.3) |
11.2 (52.2) |
13.8 (56.8) |
15.4 (59.7) |
15.2 (59.4) |
13.2 (55.8) |
10.2 (50.4) |
7.1 (44.8) |
5.0 (41.0) |
9.6 (49.3) |
| Mean daily minimum °C (°F) | 2.1 (35.8) |
2.0 (35.6) |
3.0 (37.4) |
4.7 (40.5) |
7.1 (44.8) |
9.9 (49.8) |
11.8 (53.2) |
11.7 (53.1) |
9.9 (49.8) |
7.2 (45.0) |
4.4 (39.9) |
2.4 (36.3) |
6.4 (43.5) |
| Record low °C (°F) | −12.8 (9.0) |
−11.7 (10.9) |
−12.2 (10.0) |
−5.1 (22.8) |
−3.3 (26.1) |
−1.2 (29.8) |
2.2 (36.0) |
1.1 (34.0) |
−2.2 (28.0) |
−4.4 (24.1) |
−8.6 (16.5) |
−14.9 (5.2) |
−14.9 (5.2) |
| Average precipitation mm (inches) | 77.0 (3.03) |
63.3 (2.49) |
60.6 (2.39) |
55.6 (2.19) |
55.9 (2.20) |
68.0 (2.68) |
78.8 (3.10) |
84.5 (3.33) |
69.2 (2.72) |
88.0 (3.46) |
87.7 (3.45) |
83.5 (3.29) |
872.0 (34.33) |
| Average precipitation days (≥ 1.0 mm) | 14.7 | 13.2 | 13.0 | 12.0 | 11.6 | 11.9 | 14.1 | 14.2 | 12.1 | 14.0 | 15.5 | 15.2 | 161.3 |
| Average snowy days | 5 | 5 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 19 |
| Average relative humidity (%) | 89 | 87 | 88 | 89 | 90 | 90 | 90 | 92 | 92 | 91 | 90 | 89 | 91 |
| Mean monthly sunshine hours | 48.7 | 72.1 | 108.4 | 157.8 | 197.9 | 167.6 | 152.0 | 146.4 | 121.5 | 91.2 | 61.3 | 47.1 | 1,372 |
| Source 1: Met Office[1] NOAA (relative humidity and snow days 1961–-1990)[2] | |||||||||||||
| Source 2: KNMI[3][4] Starlings Roost Weather[5][6] | |||||||||||||
References
- ^ "Belfast International Airport 1991–2020 Averages". Met Office. Retrieved 4 September 2017.
- ^ "Belfast International Airport 1961–1990". NOAA. Retrieved 4 September 2017.
- ^ "Belfast International Airpoirt (Aldergrove) extreme values". KNMI. Retrieved 8 November 2011.
- ^ "Belfast International Airpoirt 1981-2010 average extreme values". KNMI. Retrieved 28 December 2017.
- ^ "Monthly Extreme Maximum Temperature". Starlings Roost Weather. Retrieved 3 March 2023.
- ^ "Monthly Extreme Minimum Temperature". Starlings Roost Weather. Retrieved 3 March 2023.