Annual mean 12°C · wettest around December · prevailing wind SW
Warmest
22.6 °C
Coldest
6.1 °C
Wettest
22%
Windiest
5.3 m/s
Prevailing
SW
4.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Sudbury over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. Sudbury has no sharply defined rainy season: the chance of rain on a given day runs from 11% in April, the driest month, to 20% in December, the wettest. Winds in Sudbury are highest in February, averaging 4.3 m/s (15 km/h), and lightest in September, at 3.3 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Sudbury come in April, when the sky is typically 47% covered; December is the cloudiest month, at 67%.
Month by month Sudbury climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
7°C
4°C
2°C
17%
62%
3.8 m/s
0
0
17
February
9°C
5°C
4°C
17%
60%
4.3 m/s
0
0
28
March
10°C
6°C
5°C
17%
60%
4.1 m/s
3
0
41
April
13°C
7°C
9°C
11%
47%
3.6 m/s
14
1
64
May
17°C
11°C
14°C
13%
48%
3.5 m/s
43
2
83
June
20°C
14°C
18°C
12%
49%
3.7 m/s
69
12
75
July
22°C
16°C
20°C
13%
49%
3.6 m/s
79
17
70
August
22°C
15°C
19°C
12%
47%
3.5 m/s
79
14
73
September
19°C
13°C
17°C
14%
51%
3.3 m/s
64
6
81
October
15°C
11°C
12°C
19%
56%
3.5 m/s
25
0
82
November
10°C
7°C
7°C
17%
61%
3.5 m/s
2
0
50
December
8°C
6°C
4°C
20%
67%
3.9 m/s
0
0
29
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Sudbury weather by season
Year round, Sudbury has days of about 7°C at their warmest in January, its coolest month, and 22°C in July, its warmest; the coolest hours of the day run from 4°C to 16°C through the year, and the average temperature over the year is 12°C around the clock. Rain is most likely around December and least likely around April. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Sudbury weather in winterDecember to February
High 8°CLow 5°CRain 18%
Winter in Sudbury has typical daily highs of about 8°C and lows of about 5°C, with a 18% chance of rain on a given day.
Sudbury weather in springMarch to May
High 14°CLow 8°CRain 14%
Spring in Sudbury has typical daily highs of about 14°C and lows of about 8°C, with a 14% chance of rain on a given day.
Sudbury weather in summerJune to August
High 21°CLow 15°CRain 12%
Summer in Sudbury has typical daily highs of about 21°C and lows of about 15°C, with a 12% chance of rain on a given day.
Sudbury weather in autumnSeptember to November
High 15°CLow 10°CRain 16%
Autumn in Sudbury has typical daily highs of about 15°C and lows of about 10°C, with a 16% chance of rain on a given day.
When is the rainy season in Sudbury?
Sudbury has no sharply defined rainy season: the chance of rain on a given day runs from 11% in April, the driest month, to 20% in December, the wettest.
What time of year is Sudbury windiest?
Winds in Sudbury are highest in February, averaging 4.3 m/s (15 km/h), and lightest in September, at 3.3 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Sudbury year round?
The average temperature in Sudbury over the whole year is 12°C. July is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.