Chatham, Ontario, Canada Climate Change Severity

43
High
The current climate change severity in Chatham is High, with a -14.5% improvement in the climate score compared to last 15 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to Jun. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Chatham 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), Chatham temperature has changed by around +0.2%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty

Data: Jan. to Jun. (Historical Vs 2025)

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
2012
-40%
cloudyCloudy
4438
-13.6%
rainyRainy
6960
-13.04%
snowySnowy
89
12.5%
mistyMisty
05
100%

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

Climate Change Indicators:

Over the past 15 years, Chatham has experienced measurable shifts in key climate parameters, contributing to the current severity score of 43 (within the High severity category). While the score remains High, certain factors have improved over time. Here’s a breakdown of the specific changes observed:

Severity Score

43/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Chatham experienced significant changes:

Temperature change of

+0.01 °C

Variation in annual rainfall

+41.7 %

Change in average humidity

-2.06 %

PM2.5 levels surged by

-22.8 %

Heatwave changed by

+1.7 day(s)

Coldwave changed by

-6.5 day(s)

Wind speeds changed by

+1.1 km/h

These indicators show improvement in key parametes of climate, but Chatham remains in the High severity category. Continuous focus on climate resilience is necessary to avoid further worsening and ensure sustainability.

Check how we calculate Climate Change Severity

Based on data from Jan. to Jun.

Chatham Weather Forecast 30 Days (July - August 2025)
Chatham, Ontario, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sat. 19, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/13°
Humidity Icon76%
Wind Icon22km/h
Sun. 20, Jul.
moderate rainModerate rain
Temperature Icon24°/16°
Humidity Icon87%
Wind Icon17km/h
Mon. 21, Jul.
fogFog
Temperature Icon24°/15°
Humidity Icon83%
Wind Icon20km/h
Tue. 22, Jul.
sunnySunny
Temperature Icon28°/11°
Humidity Icon72%
Wind Icon15km/h
Wed. 23, Jul.
sunnySunny
Temperature Icon28°/17°
Humidity Icon64%
Wind Icon21km/h
Thu. 24, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon32°/22°
Humidity Icon75%
Wind Icon25km/h
Fri. 25, Jul.
partly cloudyPartly Cloudy
Temperature Icon29°/22°
Humidity Icon81%
Wind Icon16km/h
Sat. 26, Jul.
sunnySunny
Temperature Icon32°/21°
Humidity Icon73%
Wind Icon16km/h
Sun. 27, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon29°/20°
Humidity Icon82%
Wind Icon25km/h
Mon. 28, Jul.
sunnySunny
Temperature Icon31°/19°
Humidity Icon75%
Wind Icon13km/h
Tue. 29, Jul.
moderate rainModerate rain
Temperature Icon26°/19°
Humidity Icon87%
Wind Icon21km/h
Wed. 30, Jul.
patchy rain possiblePatchy rain nearby
Temperature Icon27°/17°
Humidity Icon79%
Wind Icon26km/h
Thu. 31, Jul.
sunnySunny
Temperature Icon25°/16°
Humidity Icon59%
Wind Icon17km/h
Fri. 1, Aug.
sunnySunny
Temperature Icon29°/17°
Humidity Icon58%
Wind Icon14km/h
Sat. 2, Aug.
heavy rain at timesHeavy rain at times
Temperature Icon26°/18°
Humidity Icon76%
Wind Icon18km/h
Sun. 3, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon27°/19°
Humidity Icon76%
Wind Icon18km/h
Mon. 4, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/19°
Humidity Icon78%
Wind Icon18km/h
Tue. 5, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon76%
Wind Icon18km/h
Wed. 6, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/18°
Humidity Icon75%
Wind Icon16km/h
Thu. 7, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon78%
Wind Icon16km/h
Fri. 8, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon79%
Wind Icon18km/h
Sat. 9, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/19°
Humidity Icon77%
Wind Icon18km/h
Sun. 10, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/19°
Humidity Icon78%
Wind Icon17km/h
Mon. 11, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/18°
Humidity Icon80%
Wind Icon18km/h
Tue. 12, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/19°
Humidity Icon78%
Wind Icon18km/h
Wed. 13, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon76%
Wind Icon17km/h
Thu. 14, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/18°
Humidity Icon77%
Wind Icon17km/h
Fri. 15, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/18°
Humidity Icon77%
Wind Icon16km/h
Sat. 16, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon77%
Wind Icon19km/h
Sun. 17, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/18°
Humidity Icon78%
Wind Icon17km/h
Mon. 18, Aug.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/18°
Humidity Icon77%
Wind Icon16km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onThu. 24, Jul.

32°C

Low will be onTue. 22, Jul.

10.9°C

HumidityHumidity

High will be onSun. 20, Jul.

87%

Low will be onFri. 1, Aug.

58%

Wind SpeedWind Speed

High will be onWed. 30, Jul.

25.6km/h

Low will be onMon. 28, Jul.

13.3km/h

PrecipitationPrecipitation

High will be onTue. 29, Jul.

8.2mm

Low will be onSat. 26, Jul.

0.02mm

Ultraviolet IndexUV

High will be onFri. 25, Jul.

7

Low will be onSun. 27, Jul.

5

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