Greater Sudbury
Climate

Greater Sudbury

Section Title: Climate
Table Section Text: None

Climate data for Sudbury Airport, 1981−2010 normals, extremes 1887−present

Month	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year

Record high humidex	7.1	10.0	28.0	30.7	39.4	41.4	42.9	49.2	38.7	34.3	20.0	17.7	49.2

Record high °C (°F)	10.0 (50.0)	9.4 (48.9)	25.9 (78.6)	29.8 (85.6)	35.6 (96.1)	35.7 (96.3)	41.1 (106.0)	36.7 (98.1)	34.4 (93.9)	27.8 (82.0)	20.0 (68.0)	15.6 (60.1)	41.1 (106.0)

Average high °C (°F)	−8.0 (17.6)	−5.5 (22.1)	0.4 (32.7)	9.2 (48.6)	17.0 (62.6)	22.2 (72.0)	24.8 (76.6)	23.4 (74.1)	18.1 (64.6)	10.3 (50.5)	2.6 (36.7)	−4.4 (24.1)	9.2 (48.6)

Daily mean °C (°F)	−13.0 (8.6)	−10.8 (12.6)	−4.9 (23.2)	3.8 (38.8)	11.1 (52.0)	16.5 (61.7)	19.1 (66.4)	18.0 (64.4)	13.0 (55.4)	6.0 (42.8)	−1.0 (30.2)	−8.6 (16.5)	4.1 (39.4)

Average low °C (°F)	−17.9 (−0.2)	−16.0 (3.2)	−10.2 (13.6)	−1.7 (28.9)	5.2 (41.4)	10.7 (51.3)	13.4 (56.1)	12.4 (54.3)	7.8 (46.0)	1.7 (35.1)	−4.7 (23.5)	−12.7 (9.1)	−1.0 (30.2)

Record low °C (°F)	−42.8 (−45.0)	−42.8 (−45.0)	−41.1 (−42.0)	−27.8 (−18.0)	−12.8 (9.0)	−1.6 (29.1)	−0.6 (30.9)	−1.1 (30.0)	−5.7 (21.7)	−13.9 (7.0)	−31.7 (−25.1)	−48.3 (−54.9)	−48.3 (−54.9)

Record low wind chill	−53.1	−50	−43.2	−32.4	−15.2	−8.6	0.0	−5.0	−9.2	−16.6	−36.3	−51	−53.1

Average precipitation mm (inches)	62.2 (2.45)	51.1 (2.01)	60.5 (2.38)	65.7 (2.59)	83.4 (3.28)	80.3 (3.16)	76.9 (3.03)	85.4 (3.36)	101.1 (3.98)	90.9 (3.58)	78.5 (3.09)	67.5 (2.66)	903.3 (35.56)

Average rainfall mm (inches)	11.9 (0.47)	7.2 (0.28)	27.9 (1.10)	49.7 (1.96)	81.4 (3.20)	80.3 (3.16)	76.9 (3.03)	85.5 (3.37)	101.0 (3.98)	84.9 (3.34)	52.3 (2.06)	16.6 (0.65)	675.7 (26.60)

Average snowfall cm (inches)	59.5 (23.4)	51.7 (20.4)	34.9 (13.7)	16.9 (6.7)	1.9 (0.7)	0.0 (0.0)	0.0 (0.0)	0.0 (0.0)	0.1 (0.0)	5.7 (2.2)	29.6 (11.7)	63.0 (24.8)	263.4 (103.7)

Average precipitation days (≥ 0.2 mm)	17.7	13.8	11.8	11.2	12.7	12.7	12.2	12.1	13.1	15.2	16.0	18.2	166.9

Average rainy days (≥ 0.2 mm)	2.8	2.1	4.5	8.4	12.3	12.7	12.2	12.1	13.1	14.0	9.0	4.3	107.6

Average snowy days (≥ 0.2 cm)	17.2	13.4	9.6	4.9	0.87	0.03	0.0	0.0	0.10	2.9	9.7	16.3	74.9

Mean monthly sunshine hours	86.3	118.2	161.0	195.6	228.4	246.9	274.7	245.2	162.1	121.4	69.8	63.5	1,973.2

Percent possible sunshine	30.9	40.7	43.7	48.1	49.1	52.2	57.4	55.8	42.9	35.8	24.6	23.7	42.1

Source: Environment Canada

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