| Climate data for Markham (Buttonville at Toronto Buttonville Airport) WMO ID: 71639; coordinates 43°51′44″N 79°22′12″W / 43.86222°N 79.37000°W; elevation: 198.1 m (650 ft); 1981–2010 normals | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high humidex | 16.0 | 14.4 | 29.2 | 35.7 | 41.0 | 44.6 | 50.9 | 47.4 | 43.6 | 37.8 | 24.9 | 20.6 | 50.9 |
| Record high °C (°F) | 14.9 (58.8) |
14.9 (58.8) |
26.0 (78.8) |
31.7 (89.1) |
34.6 (94.3) |
36.6 (97.9) |
37.2 (99.0) |
37.8 (100.0) |
34.4 (93.9) |
31.0 (87.8) |
22.1 (71.8) |
18.0 (64.4) |
37.8 (100.0) |
| Mean daily maximum °C (°F) | −1.5 (29.3) |
−0.9 (30.4) |
4.5 (40.1) |
12.1 (53.8) |
19.1 (66.4) |
24.6 (76.3) |
27.1 (80.8) |
26.0 (78.8) |
21.5 (70.7) |
14.1 (57.4) |
7.2 (45.0) |
0.9 (33.6) |
12.9 (55.2) |
| Daily mean °C (°F) | −5.8 (21.6) |
−5.6 (21.9) |
−0.4 (31.3) |
6.7 (44.1) |
13.0 (55.4) |
18.6 (65.5) |
21.2 (70.2) |
20.2 (68.4) |
15.7 (60.3) |
8.9 (48.0) |
3.1 (37.6) |
−2.9 (26.8) |
7.7 (45.9) |
| Mean daily minimum °C (°F) | −10.1 (13.8) |
−10.2 (13.6) |
−5.3 (22.5) |
1.2 (34.2) |
6.8 (44.2) |
12.6 (54.7) |
15.2 (59.4) |
14.3 (57.7) |
9.9 (49.8) |
3.6 (38.5) |
−1.1 (30.0) |
−6.8 (19.8) |
2.5 (36.5) |
| Record low °C (°F) | −35.2 (−31.4) |
−25.7 (−14.3) |
−25.6 (−14.1) |
−10.1 (13.8) |
−2.1 (28.2) |
1.9 (35.4) |
6.9 (44.4) |
4.2 (39.6) |
−2.0 (28.4) |
−7.4 (18.7) |
−15.0 (5.0) |
−26.0 (−14.8) |
−35.2 (−31.4) |
| Record low wind chill | −42.6 | −37.4 | −35.6 | −18.6 | −4.4 | 0.0 | 0.0 | 0.0 | −4.2 | −8.8 | −23.9 | −36.6 | −42.6 |
| Average precipitation mm (inches) | 62.1 (2.44) |
50.5 (1.99) |
53.2 (2.09) |
74.1 (2.92) |
79.6 (3.13) |
82.8 (3.26) |
79.0 (3.11) |
76.2 (3.00) |
81.8 (3.22) |
68.0 (2.68) |
80.0 (3.15) |
65.7 (2.59) |
852.9 (33.58) |
| Average rainfall mm (inches) | 26.0 (1.02) |
22.9 (0.90) |
33.6 (1.32) |
66.7 (2.63) |
79.5 (3.13) |
82.8 (3.26) |
78.8 (3.10) |
76.2 (3.00) |
81.8 (3.22) |
66.7 (2.63) |
68.3 (2.69) |
34.2 (1.35) |
717.4 (28.24) |
| Average snowfall cm (inches) | 38.9 (15.3) |
29.9 (11.8) |
19.3 (7.6) |
7.5 (3.0) |
0.1 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.6 (0.2) |
12.1 (4.8) |
34.2 (13.5) |
142.6 (56.1) |
| Average precipitation days (≥ 0.2 mm) | 16.7 | 12.9 | 12.0 | 12.3 | 12.0 | 11.8 | 11.2 | 9.9 | 10.8 | 13.2 | 14.5 | 15.3 | 152.7 |
| Average rainy days (≥ 0.2 mm) | 5.8 | 3.8 | 6.7 | 10.8 | 12.0 | 11.8 | 11.2 | 9.9 | 10.8 | 13.0 | 11.3 | 6.6 | 113.7 |
| Average snowy days (≥ 0.2 cm) | 13.4 | 10.8 | 7.0 | 2.9 | 0.13 | 0.0 | 0.0 | 0.0 | 0.0 | 0.48 | 4.7 | 10.8 | 50.2 |
| Average relative humidity (%) (at 1500 LST) | 69.6 | 64.0 | 57.8 | 52.9 | 52.3 | 53.9 | 53.4 | 55.9 | 59.2 | 62.4 | 68.9 | 71.1 | 60.1 |
| Source: Environment and Climate Change Canada[1] | |||||||||||||
References
- ^ "Toronto Buttonville Airport". Canadian Climate Normals 1981−2010. Environment and Climate Change Canada. Retrieved 2014-04-12.