Sudbury, Ontario, Canada Climate Change Severity

48
High
The current climate change severity in Sudbury is High, with a 8.1% worsening in the climate score compared to last 15 years. This suggests deteriorating conditions, with increasing negative impacts on weather patterns and environmental conditions.
Data: Jan. to Sep. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Sudbury Weather Condition Changes (Historic Vs 2025)

2025
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2025

Over the past 15 year(s), Sudbury temperature has changed by around +2.06%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to Sep. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
3323
-30.3%
cloudyCloudy
5639
-30.3%
rainyRainy
10674
-30.1%
snowySnowy
1419
35.7%
mistyMisty
011
100%

Disclaimer: Other weather conditions not shown may affect the total day count.

Climate Change Indicators:

Over the past 15 years, Sudbury has experienced measurable shifts in key climate parameters, contributing to the current severity score of 48 (within the High severity category). This suggests worsening climate conditions from the previous years. Here’s a breakdown of the specific changes observed:

Severity Score

48/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Sudbury experienced significant changes:

Temperature change of

+0.1 °C

Variation in annual rainfall

+86.6 %

Change in average humidity

-8.1 %

PM2.5 levels surged by

-17.7 %

Heatwave changed by

-5.4 day(s)

Coldwave changed by

-6.5 day(s)

Wind speeds changed by

+0.5 km/h

These indicators show that Sudbury is experiencing a more volatile and extreme climate, reinforcing the need for urgent intervention to mitigate risks. As the severity score rises, focus must shift to adaptation and emergency preparedness.

Check how we calculate Climate Change Severity
Based on data from Jan. to Sep.

Sudbury Weather Forecast 30 Days (October - November 2025)
Sudbury, Ontario, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sun. 19, Oct.
heavy rainHeavy rain
Temperature Icon17°/9°
Humidity Icon93%
Wind Icon36km/h
Mon. 20, Oct.
partly cloudyPartly Cloudy
Temperature Icon11°/7°
Humidity Icon73%
Wind Icon18km/h
Tue. 21, Oct.
moderate rainModerate rain
Temperature Icon9°/3°
Humidity Icon84%
Wind Icon18km/h
Wed. 22, Oct.
moderate rainModerate rain
Temperature Icon9°/5°
Humidity Icon90%
Wind Icon16km/h
Thu. 23, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon5°/3°
Humidity Icon91%
Wind Icon17km/h
Fri. 24, Oct.
cloudyCloudy
Temperature Icon8°/-1°
Humidity Icon76%
Wind Icon16km/h
Sat. 25, Oct.
overcastOvercast
Temperature Icon8°/3°
Humidity Icon78%
Wind Icon7km/h
Sun. 26, Oct.
overcastOvercast
Temperature Icon8°/2°
Humidity Icon79%
Wind Icon12km/h
Mon. 27, Oct.
overcastOvercast
Temperature Icon9°/2°
Humidity Icon76%
Wind Icon12km/h
Tue. 28, Oct.
partly cloudyPartly Cloudy
Temperature Icon9°/0°
Humidity Icon69%
Wind Icon11km/h
Wed. 29, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon9°/1°
Humidity Icon76%
Wind Icon13km/h
Thu. 30, Oct.
moderate rainModerate rain
Temperature Icon9°/2°
Humidity Icon94%
Wind Icon19km/h
Fri. 31, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon3°/0°
Humidity Icon83%
Wind Icon18km/h
Sat. 1, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/0°
Humidity Icon82%
Wind Icon18km/h
Sun. 2, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon84%
Wind Icon15km/h
Mon. 3, Nov.
moderate rain at timesModerate rain at times
Temperature Icon5°/-1°
Humidity Icon81%
Wind Icon14km/h
Tue. 4, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/-1°
Humidity Icon83%
Wind Icon16km/h
Wed. 5, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/1°
Humidity Icon87%
Wind Icon17km/h
Thu. 6, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon7°/0°
Humidity Icon84%
Wind Icon19km/h
Fri. 7, Nov.
patchy rain possiblePatchy rain possible
Temperature Icon7°/0°
Humidity Icon80%
Wind Icon17km/h
Sat. 8, Nov.
heavy rain at timesHeavy rain at times
Temperature Icon6°/-1°
Humidity Icon80%
Wind Icon16km/h
Sun. 9, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon6°/-1°
Humidity Icon85%
Wind Icon18km/h
Mon. 10, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-2°
Humidity Icon82%
Wind Icon18km/h
Wed. 12, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-3°
Humidity Icon82%
Wind Icon18km/h
Thu. 13, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-3°
Humidity Icon81%
Wind Icon16km/h
Fri. 14, Nov.
patchy moderate snowPatchy moderate snow
Temperature Icon3°/-2°
Humidity Icon82%
Wind Icon15km/h
Sat. 15, Nov.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-2°
Humidity Icon83%
Wind Icon17km/h
Sun. 16, Nov.
moderate snowModerate snow
Temperature Icon3°/-3°
Humidity Icon83%
Wind Icon17km/h
Mon. 17, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-4°
Humidity Icon81%
Wind Icon16km/h
Tue. 18, Nov.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-4°
Humidity Icon81%
Wind Icon17km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSun. 19, Oct.

17.4°C

Low will be onMon. 17, Nov.

-4°C

HumidityHumidity

High will be onThu. 30, Oct.

94%

Low will be onTue. 28, Oct.

69%

Wind SpeedWind Speed

High will be onSun. 19, Oct.

35.6km/h

Low will be onSat. 25, Oct.

7.2km/h

PrecipitationPrecipitation

High will be onSun. 19, Oct.

31.7mm

Low will be onSun. 26, Oct.

0.01mm

Ultraviolet IndexUV

High will be onSat. 25, Oct.

2

Low will be onFri. 24, Oct.

1

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