Hamilton, Ontario, Canada Climate Change Severity

43
High
The current climate change severity in Hamilton is High, with a 15.06% improvement in the climate score compared to last 16 years. This suggests improved conditions, with more favorable environmental indicators and a reduction in negative impacts.
Data: Jan. to May (Historical Vs 2026) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C

Hamilton Weather Condition Changes (Historic Vs 2026)

2026
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Historic
2026

Over the past 16 year(s), Hamilton temperature has changed by around +0.5%, and has experienced notable climate changes.

Sunny
Cloudy
Rainy
Snowy
Misty
Data: Jan. to May (Historical Vs 2026)

Comparison of Weather Condition (Historic Vs 2026)

HistoricDays

Year 2026Days

Change

sunnySunny
1525
66.6%
cloudyCloudy
3722
-40.5%
rainyRainy
5738
-33.3%
snowySnowy
912
33.3%
mistyMisty
01
100%

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

Climate Change Indicators:

Over the past 16 years, Hamilton 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 2026, Hamilton experienced significant changes:

Temperature change of

+0.01 °C

Variation in annual rainfall

+51.6 %

Change in average humidity

-2.75 %

PM2.5 levels surged by

-13.53 %

Heatwave changed by

-3 Days

Coldwave changed by

+2 Days

Wind speeds changed by

+1.12 km/h

These indicators show improvement in key parametes of climate, but Hamilton 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 May

Hamilton Weather Forecast 30 Days (June - July 2026)
Hamilton, Ontario, Canada

Condition
Temperature IconTemperature
Humidity IconHumi.
Wind IconWind Speed
Wed. 3, Jun.
sunnySunny
Temperature Icon33°/14°
Humidity Icon42%
Wind Icon14.8km/h
Thu. 4, Jun.
sunnySunny
Temperature Icon24°/12°
Humidity Icon60%
Wind Icon19.4km/h
Fri. 5, Jun.
patchy rain possiblePatchy rain nearby
Temperature Icon26°/14°
Humidity Icon71%
Wind Icon25.2km/h
Sat. 6, Jun.
moderate rainRain
Temperature Icon23°/17°
Humidity Icon87%
Wind Icon21.6km/h
Sun. 7, Jun.
moderate rainRain
Temperature Icon22°/16°
Humidity Icon96%
Wind Icon19.1km/h
Mon. 8, Jun.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/14°
Humidity Icon97%
Wind Icon27.4km/h
Tue. 9, Jun.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/13°
Humidity Icon96%
Wind Icon23km/h
Wed. 10, Jun.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/15°
Humidity Icon98%
Wind Icon12.2km/h
Thu. 11, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/14°
Humidity Icon76%
Wind Icon19.4km/h
Fri. 12, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/14°
Humidity Icon78%
Wind Icon17.6km/h
Sat. 13, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/13°
Humidity Icon78%
Wind Icon19.1km/h
Sun. 14, Jun.
heavy rain at timesHeavy rain at times
Temperature Icon21°/13°
Humidity Icon75%
Wind Icon17.3km/h
Mon. 15, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/14°
Humidity Icon75%
Wind Icon14.4km/h
Tue. 16, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/15°
Humidity Icon76%
Wind Icon16.2km/h
Wed. 17, Jun.
heavy rain at timesHeavy rain at times
Temperature Icon25°/15°
Humidity Icon74%
Wind Icon17.6km/h
Thu. 18, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/16°
Humidity Icon77%
Wind Icon17.6km/h
Fri. 19, Jun.
heavy rain at timesHeavy rain at times
Temperature Icon24°/17°
Humidity Icon74%
Wind Icon17.3km/h
Sat. 20, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon24°/16°
Humidity Icon75%
Wind Icon16.6km/h
Sun. 21, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/16°
Humidity Icon76%
Wind Icon18km/h
Mon. 22, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon76%
Wind Icon18.4km/h
Tue. 23, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon78%
Wind Icon19.4km/h
Wed. 24, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon77%
Wind Icon18.7km/h
Thu. 25, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon75%
Wind Icon18km/h
Fri. 26, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon24°/17°
Humidity Icon77%
Wind Icon19.8km/h
Sat. 27, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon24°/17°
Humidity Icon80%
Wind Icon19.4km/h
Sun. 28, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/16°
Humidity Icon80%
Wind Icon18km/h
Mon. 29, Jun.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon26°/17°
Humidity Icon78%
Wind Icon17.3km/h
Tue. 30, Jun.
heavy rain at timesHeavy rain at times
Temperature Icon25°/17°
Humidity Icon77%
Wind Icon19.1km/h
Wed. 1, Jul.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon77%
Wind Icon17.6km/h
Thu. 2, Jul.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon25°/17°
Humidity Icon76%
Wind Icon16.6km/h
Fri. 3, Jul.
moderate rain at timesModerate rain at times
Temperature Icon26°/17°
Humidity Icon73%
Wind Icon14.8km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 3, Jun.

33°C

Low will be onThu. 4, Jun.

12°C

HumidityHumidity

High will be onWed. 10, Jun.

98%

Low will be onWed. 3, Jun.

42%

Wind SpeedWind Speed

High will be onMon. 8, Jun.

27.4km/h

Low will be onWed. 10, Jun.

12.2km/h

PrecipitationPrecipitation

High will be onSun. 28, Jun.

8.2mm

Low will be onTue. 9, Jun.

0.2mm

Ultraviolet IndexUV

High will be onFri. 5, Jun.

8.8

Low will be onSun. 7, Jun.

0.3

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