Lethbridge, Alberta, Canada Climate Change Severity

57
High
The current climate change severity in Lethbridge is High, with a 6.8% 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 Aug. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Lethbridge 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), Lethbridge temperature has changed by around -0.2%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
6039
-35%
cloudyCloudy
6238
-38.7%
rainyRainy
8252
-36.5%
snowySnowy
710
42.8%
mistyMisty
015
100%

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

Climate Change Indicators:

Over the past 15 years, Lethbridge has experienced measurable shifts in key climate parameters, contributing to the current severity score of 57 (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

57/100

High

Low
020
Moderate
40
High
60
Very High
80
Extreme
100

From 2010 to 2025, Lethbridge experienced significant changes:

Temperature change of

-0.02 °C

Variation in annual rainfall

+50.1 %

Change in average humidity

+2.5 %

PM2.5 levels surged by

-39.2 %

Heatwave changed by

-6.2 day(s)

Coldwave changed by

-10.6 day(s)

Wind speeds changed by

+2.5 km/h

These indicators show that Lethbridge 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 Aug.

Lethbridge Weather Forecast 30 Days (September - October 2025)
Lethbridge, Alberta, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 16, Sep.
sunnySunny
Temperature Icon28°/12°
Humidity Icon60%
Wind Icon13km/h
Wed. 17, Sep.
sunnySunny
Temperature Icon28°/7°
Humidity Icon59%
Wind Icon21km/h
Thu. 18, Sep.
sunnySunny
Temperature Icon28°/9°
Humidity Icon51%
Wind Icon16km/h
Fri. 19, Sep.
sunnySunny
Temperature Icon27°/5°
Humidity Icon52%
Wind Icon14km/h
Sat. 20, Sep.
sunnySunny
Temperature Icon27°/14°
Humidity Icon36%
Wind Icon43km/h
Sun. 21, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon19°/10°
Humidity Icon44%
Wind Icon49km/h
Mon. 22, Sep.
sunnySunny
Temperature Icon22°/8°
Humidity Icon38%
Wind Icon20km/h
Tue. 23, Sep.
sunnySunny
Temperature Icon28°/10°
Humidity Icon30%
Wind Icon22km/h
Wed. 24, Sep.
partly cloudyPartly Cloudy
Temperature Icon23°/17°
Humidity Icon34%
Wind Icon31km/h
Thu. 25, Sep.
sunnySunny
Temperature Icon24°/11°
Humidity Icon43%
Wind Icon30km/h
Fri. 26, Sep.
partly cloudyPartly Cloudy
Temperature Icon20°/13°
Humidity Icon42%
Wind Icon35km/h
Sat. 27, Sep.
partly cloudyPartly Cloudy
Temperature Icon18°/11°
Humidity Icon46%
Wind Icon21km/h
Sun. 28, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon13°/7°
Humidity Icon63%
Wind Icon23km/h
Mon. 29, Sep.
cloudyCloudy
Temperature Icon16°/7°
Humidity Icon59%
Wind Icon33km/h
Tue. 30, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/7°
Humidity Icon57%
Wind Icon22km/h
Wed. 1, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon15°/6°
Humidity Icon58%
Wind Icon19km/h
Thu. 2, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/4°
Humidity Icon61%
Wind Icon21km/h
Fri. 3, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/3°
Humidity Icon66%
Wind Icon21km/h
Sat. 4, Oct.
moderate rain at timesModerate rain at times
Temperature Icon14°/4°
Humidity Icon62%
Wind Icon18km/h
Sun. 5, Oct.
moderate rain at timesModerate rain at times
Temperature Icon14°/4°
Humidity Icon59%
Wind Icon18km/h
Mon. 6, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon16°/5°
Humidity Icon54%
Wind Icon22km/h
Tue. 7, Oct.
moderate rain at timesModerate rain at times
Temperature Icon16°/5°
Humidity Icon56%
Wind Icon21km/h
Wed. 8, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/3°
Humidity Icon62%
Wind Icon21km/h
Thu. 9, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon14°/2°
Humidity Icon59%
Wind Icon21km/h
Fri. 10, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/3°
Humidity Icon60%
Wind Icon23km/h
Sat. 11, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon10°/2°
Humidity Icon63%
Wind Icon22km/h
Sun. 12, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon11°/1°
Humidity Icon59%
Wind Icon21km/h
Mon. 13, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon11°/2°
Humidity Icon62%
Wind Icon19km/h
Tue. 14, Oct.
heavy rain at timesHeavy rain at times
Temperature Icon13°/3°
Humidity Icon60%
Wind Icon23km/h
Wed. 15, Oct.
patchy rain possiblePatchy rain possible
Temperature Icon14°/4°
Humidity Icon56%
Wind Icon23km/h
Thu. 16, Oct.
moderate rain at timesModerate rain at times
Temperature Icon15°/4°
Humidity Icon57%
Wind Icon24km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onWed. 17, Sep.

28.4°C

Low will be onSun. 12, Oct.

1.4°C

HumidityHumidity

High will be onFri. 3, Oct.

66%

Low will be onTue. 23, Sep.

30%

Wind SpeedWind Speed

High will be onSun. 21, Sep.

48.6km/h

Low will be onTue. 16, Sep.

13km/h

PrecipitationPrecipitation

High will be onThu. 2, Oct.

3.7mm

Low will be onSat. 27, Sep.

0.03mm

Ultraviolet IndexUV

High will be onTue. 23, Sep.

5

Low will be onSat. 11, Oct.

1

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