Chilliwack, British Columbia, Canada Climate Change Severity

48
High
The current climate change severity in Chilliwack is High, with a 6.6% 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)

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 +2.03%, 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
5038
-24%
cloudyCloudy
4241
-2.3%
rainyRainy
12183
-31.4%
snowySnowy
64
-33.3%
mistyMisty
022
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 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, Chilliwack experienced significant changes:

Temperature change of

+0.2 °C

Variation in annual rainfall

+27.8 %

Change in average humidity

-5.6 %

PM2.5 levels surged by

-38.8 %

Heatwave changed by

+1.2 day(s)

Coldwave changed by

-2.9 day(s)

Wind speeds changed by

-0.2 km/h

These indicators show that Chilliwack 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.

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

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Tue. 30, Sep.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/10°
Humidity Icon74%
Wind Icon7km/h
Wed. 1, Oct.
partly cloudyPartly Cloudy
Temperature Icon17°/12°
Humidity Icon75%
Wind Icon5km/h
Thu. 2, Oct.
heavy rainHeavy rain
Temperature Icon15°/4°
Humidity Icon87%
Wind Icon5km/h
Fri. 3, Oct.
partly cloudyPartly Cloudy
Temperature Icon13°/6°
Humidity Icon76%
Wind Icon8km/h
Sat. 4, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon14°/7°
Humidity Icon93%
Wind Icon7km/h
Sun. 5, Oct.
sunnySunny
Temperature Icon19°/7°
Humidity Icon65%
Wind Icon11km/h
Mon. 6, Oct.
sunnySunny
Temperature Icon20°/7°
Humidity Icon56%
Wind Icon10km/h
Tue. 7, Oct.
sunnySunny
Temperature Icon17°/8°
Humidity Icon60%
Wind Icon8km/h
Wed. 8, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon16°/8°
Humidity Icon72%
Wind Icon5km/h
Thu. 9, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon18°/8°
Humidity Icon76%
Wind Icon8km/h
Fri. 10, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon17°/10°
Humidity Icon74%
Wind Icon8km/h
Sat. 11, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon14°/8°
Humidity Icon90%
Wind Icon7km/h
Sun. 12, Oct.
patchy rain possiblePatchy rain nearby
Temperature Icon12°/7°
Humidity Icon89%
Wind Icon7km/h
Mon. 13, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/4°
Humidity Icon81%
Wind Icon9km/h
Tue. 14, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/5°
Humidity Icon81%
Wind Icon10km/h
Wed. 15, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/5°
Humidity Icon79%
Wind Icon9km/h
Thu. 16, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon14°/5°
Humidity Icon82%
Wind Icon9km/h
Fri. 17, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/5°
Humidity Icon84%
Wind Icon9km/h
Sat. 18, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon85%
Wind Icon8km/h
Sun. 19, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon15°/6°
Humidity Icon85%
Wind Icon7km/h
Mon. 20, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon13°/6°
Humidity Icon88%
Wind Icon8km/h
Wed. 22, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon12°/5°
Humidity Icon86%
Wind Icon8km/h
Thu. 23, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/4°
Humidity Icon86%
Wind Icon9km/h
Fri. 24, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/3°
Humidity Icon85%
Wind Icon9km/h
Sat. 25, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/3°
Humidity Icon83%
Wind Icon10km/h
Sun. 26, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/3°
Humidity Icon85%
Wind Icon9km/h
Mon. 27, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/3°
Humidity Icon83%
Wind Icon10km/h
Tue. 28, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/4°
Humidity Icon85%
Wind Icon8km/h
Wed. 29, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon10°/3°
Humidity Icon85%
Wind Icon9km/h
Thu. 30, Oct.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon11°/4°
Humidity Icon83%
Wind Icon10km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onMon. 6, Oct.

19.9°C

Low will be onSat. 25, Oct.

2.7°C

HumidityHumidity

High will be onSat. 4, Oct.

93%

Low will be onMon. 6, Oct.

56%

Wind SpeedWind Speed

High will be onSun. 5, Oct.

10.8km/h

Low will be onWed. 1, Oct.

4.7km/h

PrecipitationPrecipitation

High will be onThu. 2, Oct.

39.09mm

Low will be onFri. 3, Oct.

0.03mm

Ultraviolet IndexUV

High will be onSun. 5, Oct.

4

Low will be onSun. 12, Oct.

2

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