Climate data for Lester B. Pearson International Airport (Brampton and North Mississauga) WMO ID: 71624; coordinates 43°40′38″N 79°37′50″W / 43.67722°N 79.63056°W, elevation: 173.4 m (569 ft), 1991–2020 normals, extremes 1937–present | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
Record high humidex | 19.0 | 18.3 | 29.6 | 37.9 | 42.6 | 45.6 | 50.3 | 46.6 | 48.0 | 39.1 | 28.6 | 23.9 | 50.3 |
Record high °C (°F) | 17.6 (63.7) |
17.7 (63.9) |
26.0 (78.8) |
31.1 (88.0) |
34.4 (93.9) |
36.7 (98.1) |
37.9 (100.2) |
38.3 (100.9) |
36.7 (98.1) |
31.8 (89.2) |
25.1 (77.2) |
20.0 (68.0) |
38.3 (100.9) |
Mean daily maximum °C (°F) | −1.2 (29.8) |
−0.3 (31.5) |
5.0 (41.0) |
12.0 (53.6) |
19.2 (66.6) |
24.5 (76.1) |
27.4 (81.3) |
26.3 (79.3) |
22.3 (72.1) |
14.6 (58.3) |
7.9 (46.2) |
1.9 (35.4) |
13.3 (55.9) |
Daily mean °C (°F) | −5 (23) |
−4.4 (24.1) |
0.6 (33.1) |
7.0 (44.6) |
13.7 (56.7) |
19.2 (66.6) |
22.1 (71.8) |
21.1 (70.0) |
16.9 (62.4) |
10.0 (50.0) |
4.1 (39.4) |
−1.6 (29.1) |
8.6 (47.5) |
Mean daily minimum °C (°F) | −8.9 (16.0) |
−8.5 (16.7) |
−3.8 (25.2) |
1.9 (35.4) |
8.2 (46.8) |
13.9 (57.0) |
16.6 (61.9) |
15.8 (60.4) |
11.6 (52.9) |
5.3 (41.5) |
0.2 (32.4) |
−5 (23) |
3.9 (39.0) |
Record low °C (°F) | −31.3 (−24.3) |
−31.1 (−24.0) |
−28.9 (−20.0) |
−17.2 (1.0) |
−5.6 (21.9) |
0.6 (33.1) |
3.9 (39.0) |
1.1 (34.0) |
−3.9 (25.0) |
−8.3 (17.1) |
−18.3 (−0.9) |
−31.1 (−24.0) |
−31.3 (−24.3) |
Record low wind chill | −44.7 | −38.9 | −36.2 | −25.4 | −9.5 | 0.0 | 0.0 | 0.0 | −8.0 | −13.5 | −25.4 | −38.5 | −44.7 |
Average precipitation mm (inches) | 61.6 (2.43) |
50.2 (1.98) |
50.5 (1.99) |
76.7 (3.02) |
77.6 (3.06) |
80.7 (3.18) |
74.0 (2.91) |
68.5 (2.70) |
69.4 (2.73) |
67.2 (2.65) |
71.8 (2.83) |
58.6 (2.31) |
806.8 (31.76) |
Average rainfall mm (inches) | 33.8 (1.33) |
23.9 (0.94) |
34.0 (1.34) |
70.7 (2.78) |
77.5 (3.05) |
80.7 (3.18) |
74.0 (2.91) |
68.5 (2.70) |
69.4 (2.73) |
67.0 (2.64) |
62.7 (2.47) |
35.3 (1.39) |
697.4 (27.46) |
Average snowfall cm (inches) | 31.5 (12.4) |
27.7 (10.9) |
17.2 (6.8) |
4.5 (1.8) |
0.1 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.2 (0.1) |
9.3 (3.7) |
24.1 (9.5) |
114.5 (45.1) |
Average precipitation days (≥ 0.2 mm) | 16.2 | 12.0 | 12.3 | 12.5 | 12.7 | 10.8 | 10.3 | 9.8 | 10.2 | 12.8 | 12.6 | 14.9 | 147.3 |
Average rainy days (≥ 0.2 mm) | 6.2 | 4.6 | 7.2 | 11.7 | 12.7 | 10.8 | 10.3 | 9.8 | 10.2 | 12.8 | 10.4 | 7.5 | 114.1 |
Average snowy days (≥ 0.2 cm) | 12.7 | 9.7 | 6.8 | 2.2 | 0.12 | 0.0 | 0.0 | 0.0 | 0.0 | 0.24 | 3.6 | 9.2 | 44.7 |
Average relative humidity (%) (at 15:00) | 69.7 | 65.7 | 58.5 | 53.4 | 53.6 | 54.4 | 52.9 | 55.2 | 57.3 | 61.6 | 66.7 | 70.5 | 60.0 |
Mean monthly sunshine hours | 79.7 | 112.2 | 159.4 | 204.4 | 228.2 | 249.7 | 294.4 | 274.5 | 215.7 | 163.7 | 94.2 | 86.2 | 2,161.4 |
Percent possible sunshine | 27.6 | 38.0 | 43.2 | 50.8 | 50.1 | 54.1 | 63.0 | 63.4 | 57.4 | 47.8 | 32.0 | 30.9 | 46.5 |
Source: Environment and Climate Change Canada[1][2][3] |