Template:Hamilton, Ontario weatherbox
| Climate data for Hamilton, Ontario (Royal Botanical Gardens) Climate ID: 6153300; coordinates 43°17′N 79°53′W / 43.283°N 79.883°W; elevation: 102.10 m (335.0 ft); 1981−2010 normals, extremes 1866−present[a] | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Record high °C (°F) | 18.3 (64.9) |
18.8 (65.8) |
27.2 (81.0) |
31.1 (88.0) |
36.1 (97.0) |
38.9 (102.0) |
41.1 (106.0) |
38.9 (102.0) |
37.8 (100.0) |
32.2 (90.0) |
26.1 (79.0) |
21.2 (70.2) |
41.1 (106.0) |
| Mean daily maximum °C (°F) | −0.9 (30.4) |
0.1 (32.2) |
4.8 (40.6) |
11.7 (53.1) |
18.6 (65.5) |
24.3 (75.7) |
27.3 (81.1) |
25.9 (78.6) |
21.1 (70.0) |
14.6 (58.3) |
7.7 (45.9) |
2.0 (35.6) |
13.1 (55.6) |
| Daily mean °C (°F) | −4.7 (23.5) |
−3.9 (25.0) |
0.5 (32.9) |
7.1 (44.8) |
13.3 (55.9) |
18.9 (66.0) |
22.0 (71.6) |
20.9 (69.6) |
16.3 (61.3) |
10.0 (50.0) |
4.1 (39.4) |
−1.4 (29.5) |
8.6 (47.5) |
| Mean daily minimum °C (°F) | −8.5 (16.7) |
−7.9 (17.8) |
−3.8 (25.2) |
2.4 (36.3) |
7.9 (46.2) |
13.4 (56.1) |
16.7 (62.1) |
15.8 (60.4) |
11.4 (52.5) |
5.4 (41.7) |
0.4 (32.7) |
−4.7 (23.5) |
4.0 (39.2) |
| Record low °C (°F) | −30.6 (−23.1) |
−29.4 (−20.9) |
−28.3 (−18.9) |
−14.4 (6.1) |
−7.2 (19.0) |
−1.1 (30.0) |
5.0 (41.0) |
1.1 (34.0) |
−3.9 (25.0) |
−11.1 (12.0) |
−22.8 (−9.0) |
−27.8 (−18.0) |
−30.6 (−23.1) |
| Average precipitation mm (inches) | 56.8 (2.24) |
57.2 (2.25) |
63.7 (2.51) |
73.3 (2.89) |
85.5 (3.37) |
72.7 (2.86) |
82.7 (3.26) |
89.7 (3.53) |
80.9 (3.19) |
71.6 (2.82) |
91.3 (3.59) |
71.9 (2.83) |
897.1 (35.32) |
| Average rainfall mm (inches) | 27.4 (1.08) |
26.4 (1.04) |
43.3 (1.70) |
70.1 (2.76) |
85.5 (3.37) |
72.7 (2.86) |
82.7 (3.26) |
89.7 (3.53) |
80.9 (3.19) |
71.6 (2.82) |
83.2 (3.28) |
46.8 (1.84) |
780.0 (30.71) |
| Average snowfall cm (inches) | 32.4 (12.8) |
31.1 (12.2) |
18.3 (7.2) |
2.8 (1.1) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
0.0 (0.0) |
7.5 (3.0) |
26.0 (10.2) |
118.1 (46.5) |
| Average precipitation days (≥ 0.2 mm) | 14.7 | 12.1 | 12.3 | 13.5 | 12.2 | 10.5 | 10.7 | 11.1 | 12.3 | 11.8 | 14.3 | 13.8 | 149.1 |
| Average rainy days (≥ 0.2 mm) | 5.7 | 5.0 | 8.8 | 12.6 | 12.2 | 10.5 | 10.7 | 11.1 | 12.3 | 11.8 | 12.8 | 7.6 | 120.9 |
| Average snowy days (≥ 0.2 cm) | 10.5 | 8.6 | 4.9 | 1.2 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 2.6 | 8.4 | 36.2 |
| Mean monthly sunshine hours | 87.2 | 113.4 | 152.4 | 182.2 | 244.0 | 279.1 | 303.5 | 262.6 | 177.7 | 148.6 | 88.9 | 71.0 | 2,110.6 |
| Percent possible sunshine | 30.0 | 38.3 | 41.3 | 45.4 | 53.7 | 60.7 | 65.1 | 60.7 | 47.3 | 43.4 | 30.4 | 25.3 | 45.1 |
| Average ultraviolet index | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 3 | 2 | 1 | 5 |
| Source 1: Environment and Climate Change Canada[1][2][3][4] | |||||||||||||
| Source 2: Weather Atlas [5] | |||||||||||||
Notes[edit]
- ^ Based on station coordinates provided by Environment and Climate Change Canada, climate data for was recorded near downtown Hamilton from January 1866 to August 1958, and April 1950 to present at the Royal Botanical Gardens.
References
- ^ "Hamilton RBG, Ontario". Canadian Climate Normals 1981−2010. Environment and Climate Change Canada. Retrieved February 24, 2014.
- ^ "Hamilton 1866-1958". Canadian Climate Data. Environment and Climate Change Canada. Retrieved 23 March 2016.
- ^ "Hamilton RBG CS". Canadian Climate Data. Environment and Climate Change Canada. Retrieved 16 April 2016.
- ^ "Daily Data Report for February 2017". Canadian Climate Data. Environment and Climate Change Canada. Retrieved 9 March 2017.
- ^ "Hamilton, Canada - Monthly weather forecast and Climate data". Weather Atlas. Retrieved 4 July 2019.