Chilliwack, British Columbia, Canada Climate Change Severity

48
High
The current climate change severity in Chilliwack is High, with a 5.7% 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 Nov. (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 +5.6%, and has experienced notable climate changes.

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

Comparison of Weather Condition (Historic Vs 2025)

HistoricDays

Year 2025Days

Change

sunnySunny
7150
-29.5%
cloudyCloudy
5552
-5.4%
rainyRainy
171107
-37.4%
snowySnowy
74
-42.8%
mistyMisty
033
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

+0.5 °C

Variation in annual rainfall

+46.5 %

Change in average humidity

-4.8 %

PM2.5 levels surged by

-39.7 %

Heatwave changed by

+0.9 day(s)

Coldwave changed by

-3.8 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 Nov.

Chilliwack Weather Forecast 30 Days (December - January 2026)
Chilliwack, British Columbia, Canada

Condition
Temperature IconTemperature
Humidity Iconhumi.
Wind IconWind Speed
Sat. 13, Dec.
patchy rain possiblePatchy rain nearby
Temperature Icon15°/8°
Humidity Icon85%
Wind Icon5km/h
Sun. 14, Dec.
heavy rainHeavy rain
Temperature Icon10°/8°
Humidity Icon80%
Wind Icon6km/h
Mon. 15, Dec.
heavy rainHeavy rain
Temperature Icon14°/8°
Humidity Icon91%
Wind Icon19km/h
Tue. 16, Dec.
heavy rainHeavy rain
Temperature Icon6°/5°
Humidity Icon97%
Wind Icon17km/h
Wed. 17, Dec.
moderate rainModerate rain
Temperature Icon4°/2°
Humidity Icon93%
Wind Icon20km/h
Thu. 18, Dec.
moderate rainModerate rain
Temperature Icon4°/2°
Humidity Icon99%
Wind Icon13km/h
Fri. 19, Dec.
moderate rainModerate rain
Temperature Icon2°/1°
Humidity Icon99%
Wind Icon5km/h
Sat. 20, Dec.
moderate or heavy snow with thunderModerate or heavy snow in area with thunder
Temperature Icon2°/-1°
Humidity Icon98%
Wind Icon4km/h
Sun. 21, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon0°/-5°
Humidity Icon96%
Wind Icon7km/h
Mon. 22, Dec.
heavy snowHeavy snow
Temperature Icon-2°/-10°
Humidity Icon95%
Wind Icon8km/h
Tue. 23, Dec.
mistMist
Temperature Icon-2°/-11°
Humidity Icon95%
Wind Icon6km/h
Wed. 24, Dec.
heavy snowHeavy snow
Temperature Icon2°/-3°
Humidity Icon98%
Wind Icon18km/h
Thu. 25, Dec.
light freezing rainLight freezing rain
Temperature Icon1°/-7°
Humidity Icon94%
Wind Icon6km/h
Fri. 26, Dec.
patchy moderate snowPatchy moderate snow
Temperature Icon0°/-8°
Humidity Icon94%
Wind Icon7km/h
Sat. 27, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-2°
Humidity Icon94%
Wind Icon10km/h
Sun. 28, Dec.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon3°/-1°
Humidity Icon93%
Wind Icon9km/h
Mon. 29, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-2°
Humidity Icon92%
Wind Icon11km/h
Tue. 30, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon1°/-3°
Humidity Icon91%
Wind Icon9km/h
Wed. 31, Dec.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon2°/-3°
Humidity Icon88%
Wind Icon9km/h
Thu. 1, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-2°
Humidity Icon87%
Wind Icon10km/h
Fri. 2, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-2°
Humidity Icon89%
Wind Icon11km/h
Sat. 3, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-2°
Humidity Icon91%
Wind Icon10km/h
Sun. 4, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-1°
Humidity Icon93%
Wind Icon11km/h
Mon. 5, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-1°
Humidity Icon93%
Wind Icon10km/h
Tue. 6, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/0°
Humidity Icon93%
Wind Icon10km/h
Wed. 7, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-1°
Humidity Icon93%
Wind Icon11km/h
Thu. 8, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/0°
Humidity Icon93%
Wind Icon12km/h
Fri. 9, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon5°/0°
Humidity Icon93%
Wind Icon11km/h
Sat. 10, Jan.
moderate or heavy rain showerModerate or heavy rain shower
Temperature Icon4°/-1°
Humidity Icon93%
Wind Icon10km/h
Sun. 11, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-2°
Humidity Icon90%
Wind Icon12km/h
Mon. 12, Jan.
moderate or heavy snow showersModerate or heavy snow showers
Temperature Icon3°/-2°
Humidity Icon89%
Wind Icon10km/h

Highest & Lowest Weather Forecasts

TemperatureTemperature

High will be onSat. 13, Dec.

14.9°C

Low will be onTue. 23, Dec.

-11.1°C

HumidityHumidity

High will be onThu. 18, Dec.

99%

Low will be onSun. 14, Dec.

80%

Wind SpeedWind Speed

High will be onWed. 17, Dec.

20.2km/h

Low will be onSat. 20, Dec.

4.3km/h

PrecipitationPrecipitation

High will be onMon. 15, Dec.

100.4mm

Low will be onSat. 13, Dec.

0.4mm

Ultraviolet IndexUV

High will be onThu. 18, Dec.

1

Low will be onThu. 18, Dec.

1

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