Chilliwack, British Columbia, Canada Climate Change Severity

43
High
The current climate change severity in Chilliwack is High, with a 5.1% 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 Jul. (Historical Vs 2025) - Weather Data Only
Low
020
Moderate
40
High
60
Very High
80
Extreme
100
°C (c)

Chilliwack 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), Chilliwack temperature has changed by around +1.9%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
3732
-13.5%
cloudyCloudy
3633
-8.3%
rainyRainy
11180
-27.9%
snowySnowy
64
-33.3%
mistyMisty
016
100%

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

Climate Change Indicators:

Over the past 15 years, Chilliwack 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, Chilliwack experienced significant changes:

Temperature change of

+0.1 °C

Variation in annual rainfall

+4.3 %

Change in average humidity

-6.9 %

PM2.5 levels surged by

-32.1 %

Heatwave changed by

-2.3 day(s)

Coldwave changed by

-2.9 day(s)

Wind speeds changed by

-0.3 km/h

These indicators show improvement in key parametes of climate, but Chilliwack 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 Jul.

Chilliwack Weather Forecast 30 Days (August - September 2025)
Chilliwack, British Columbia, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 19, Aug.
overcastOvercast
Temperature Icon21°/14°
Humidity Icon80%
Wind Icon9km/h
Wed. 20, Aug.
mistMist
Temperature Icon23°/10°
Humidity Icon83%
Wind Icon10km/h
Thu. 21, Aug.
sunnySunny
Temperature Icon27°/13°
Humidity Icon62%
Wind Icon8km/h
Fri. 22, Aug.
sunnySunny
Temperature Icon33°/17°
Humidity Icon35%
Wind Icon10km/h
Sat. 23, Aug.
sunnySunny
Temperature Icon35°/15°
Humidity Icon37%
Wind Icon10km/h
Sun. 24, Aug.
sunnySunny
Temperature Icon34°/17°
Humidity Icon45%
Wind Icon8km/h
Mon. 25, Aug.
sunnySunny
Temperature Icon30°/16°
Humidity Icon60%
Wind Icon8km/h
Tue. 26, Aug.
sunnySunny
Temperature Icon30°/15°
Humidity Icon60%
Wind Icon7km/h
Wed. 27, Aug.
sunnySunny
Temperature Icon29°/16°
Humidity Icon64%
Wind Icon8km/h
Thu. 28, Aug.
sunnySunny
Temperature Icon25°/13°
Humidity Icon65%
Wind Icon9km/h
Fri. 29, Aug.
sunnySunny
Temperature Icon19°/9°
Humidity Icon64%
Wind Icon8km/h
Sat. 30, Aug.
sunnySunny
Temperature Icon22°/10°
Humidity Icon62%
Wind Icon8km/h
Sun. 31, Aug.
sunnySunny
Temperature Icon22°/11°
Humidity Icon66%
Wind Icon10km/h
Mon. 1, Sep.
sunnySunny
Temperature Icon20°/10°
Humidity Icon68%
Wind Icon8km/h
Tue. 2, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/9°
Humidity Icon77%
Wind Icon8km/h
Wed. 3, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/9°
Humidity Icon75%
Wind Icon8km/h
Thu. 4, Sep.
moderate rain at timesModerate rain at times
Temperature Icon23°/10°
Humidity Icon70%
Wind Icon8km/h
Fri. 5, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon22°/10°
Humidity Icon72%
Wind Icon9km/h
Sat. 6, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/10°
Humidity Icon71%
Wind Icon9km/h
Sun. 7, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon23°/10°
Humidity Icon73%
Wind Icon9km/h
Mon. 8, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/10°
Humidity Icon78%
Wind Icon7km/h
Tue. 9, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/10°
Humidity Icon79%
Wind Icon8km/h
Wed. 10, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon22°/9°
Humidity Icon71%
Wind Icon9km/h
Thu. 11, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon22°/10°
Humidity Icon69%
Wind Icon8km/h
Sat. 13, Sep.
heavy rain at timesHeavy rain at times
Temperature Icon21°/9°
Humidity Icon75%
Wind Icon8km/h
Sun. 14, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon21°/8°
Humidity Icon75%
Wind Icon7km/h
Mon. 15, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/9°
Humidity Icon75%
Wind Icon8km/h
Tue. 16, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon20°/9°
Humidity Icon76%
Wind Icon8km/h
Wed. 17, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon19°/9°
Humidity Icon79%
Wind Icon9km/h
Thu. 18, Sep.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon18°/9°
Humidity Icon83%
Wind Icon8km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 23, Aug.

35.2°C

Low will be onSun. 14, Sep.

8.3°C

HumidityHumidity

High will be onWed. 20, Aug.

83%

Low will be onFri. 22, Aug.

35%

Wind SpeedWind Speed

High will be onWed. 20, Aug.

10.1km/h

Low will be onTue. 26, Aug.

7.2km/h

PrecipitationPrecipitation

High will be onWed. 17, Sep.

8.3mm

Low will be onThu. 4, Sep.

0.5mm

Ultraviolet IndexUV

High will be onSat. 23, Aug.

6

Low will be onTue. 9, Sep.

3

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