Annual mean 11°C · wettest around December · prevailing wind S
Warmest
23.6 °C
Coldest
3.2 °C
Wettest
39%
Windiest
3.3 m/s
Prevailing
S
2.8 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Chilliwack over the whole year is 11°C. July is the hottest month, with highs of about 23°C; February is the coldest, with lows of about 2°C. The rainy (wet) season in Chilliwack runs from October to April, peaking in December with a 39% chance of rain on a given day. The dry season is May to September; August is the driest month, at 13%. Winds in Chilliwack are highest in February, averaging 2.7 m/s (10 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the S. The clearest skies in Chilliwack come in July, when the sky is typically 28% covered; December is the cloudiest month, at 57%.
Month by month Chilliwack climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
5°C
2°C
1°C
36%
56%
2.6 m/s
0
0
13
February
5°C
2°C
1°C
35%
55%
2.7 m/s
0
0
16
March
9°C
4°C
5°C
31%
52%
2.4 m/s
2
0
39
April
13°C
7°C
9°C
27%
47%
2.4 m/s
13
0
67
May
17°C
11°C
15°C
21%
42%
2.2 m/s
48
5
81
June
19°C
13°C
17°C
19%
41%
2.2 m/s
64
11
77
July
23°C
15°C
21°C
13%
28%
2.1 m/s
85
27
63
August
23°C
15°C
22°C
13%
31%
2.0 m/s
81
31
58
September
19°C
12°C
18°C
22%
41%
1.8 m/s
74
9
78
October
13°C
8°C
11°C
31%
46%
2.0 m/s
22
1
72
November
8°C
5°C
5°C
38%
54%
2.5 m/s
1
0
35
December
4°C
2°C
0°C
39%
57%
2.6 m/s
0
0
14
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Chilliwack weather by season
Year round, Chilliwack has days of about 4°C at their warmest in December, its coolest month, and 23°C in July, its warmest; the coolest hours of the day run from 2°C to 15°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around December and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Chilliwack weather in winterDecember to February
High 5°CLow 2°CRain 37%
Winter in Chilliwack has typical daily highs of about 5°C and lows of about 2°C, with a 37% chance of rain on a given day.
Chilliwack weather in springMarch to May
High 13°CLow 7°CRain 26%
Spring in Chilliwack has typical daily highs of about 13°C and lows of about 7°C, with a 26% chance of rain on a given day.
Chilliwack weather in summerJune to August
High 22°CLow 14°CRain 15%
Summer in Chilliwack has typical daily highs of about 22°C and lows of about 14°C, with a 15% chance of rain on a given day.
Chilliwack weather in autumnSeptember to November
High 13°CLow 9°CRain 30%
Autumn in Chilliwack has typical daily highs of about 13°C and lows of about 9°C, with a 30% chance of rain on a given day.
When is the rainy season in Chilliwack?
The rainy (wet) season in Chilliwack runs from October to April, peaking in December with a 39% chance of rain on a given day. The dry season is May to September; August is the driest month, at 13%.
What time of year is Chilliwack windiest?
Winds in Chilliwack are highest in February, averaging 2.7 m/s (10 km/h), and lightest in September, at 1.8 m/s (6 km/h). The prevailing wind is from the S.
What is the average temperature in Chilliwack year round?
The average temperature in Chilliwack over the whole year is 11°C. July is the hottest month, with highs of about 23°C; February is the coldest, with lows of about 2°C.