Chilliwack-Downtown weather in December

In December, Chilliwack-Downtown sees average daytime highs of 2°C and overnight lows near -2°C, with 325 mm of precipitation across 20 wet days and about 8.1 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 2°C through the month. The sky is clear or mostly clear about 13% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 18 min at the start of December to 8 hours by month's end. Set against the rest of the year, December is Chilliwack-Downtown's 12th-clearest and 1st-windiest month. For the whole year in context, see Chilliwack-Downtown's year-round climate.

Daytime high
12th warmest
Overnight low
-2°
3rd coldest
Precipitation
325 mm
20 wet days
Daylight
8 hours
8:04 AM – 4:04 PM
Cloud cover
79%
12th clearest
Wind
5 km/h
1st windiest
Solar energy
0.77 kWh/m²
Travel score
0.0
out of 10

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 2°C through the month.

A typical December day in Chilliwack-Downtown reaches about 2°C in the afternoon and slips back to -2°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -2°C and 5°C. Set against its neighbours, December runs about 3°C cooler than November and on par with January.

-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
13-1
23-1
33-1
43-1
53-1
63-1
72-1
82-1
92-2
102-2
112-2
122-2
132-2
142-2
152-2
162-2
172-2
182-2
192-2
202-2
212-2
222-2
232-2
241-2
251-2
261-2
271-2
281-2
291-2
301-2
311-2

How December really feels in Chilliwack-Downtown

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Chilliwack-Downtown weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -2°34219.715.88.50.0
Feb / -2°21216.312.49.80.0
Mar / -1°2632014.511.60.5
Apr10° / 17217.37.313.41.9
May15° / 12214.82153.9
Jun17° / 10214.40.115.94.8
Jul21° / 11°618.8015.66.7
Aug21° / 11°748.6014.26.8
Sep17° / 12411.1012.45.5
Oct11° / 25617.42.210.52.4
Nov / 37220.512.18.90.2
Dec / -2°3252016.88.10.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 13% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 6% of December, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
22179
32278
42278
52179
62179
72080
81981
92080
102080
111981
121981
131882
141882
151882
161783
171783
181783
191783
201882
211783
221783
231882
241882
251981
261882
271981
281981
292080
302080
312080

Chance of precipitation in December

Any precipitationSnow

Chilliwack-Downtown gets around 325 mm of rain and snow over 20 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 65% and peaks near 69% on the wettest days, and about 17 days bring snow.

0%20%40%60%80%151015202531
Rain chance (%)Snow chance (%)
16351
26351
36351
46251
56251
66252
76352
86353
96453
106454
116555
126656
136757
146857
156858
166858
176958
186958
196858
206858
216857
226757
236756
246656
256655
266555
276555
286555
296555
306555
316555

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 5 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 18 min at the start of December to 8 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 18 minutes over December. Sunrise moves from 7:49 AM to 8:10 AM, and sunset from 4:07 PM to 4:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.37:494:07
28.37:504:06
38.27:514:06
48.27:524:05
58.27:534:05
68.27:544:05
78.17:564:04
88.17:574:04
98.17:584:04
108.17:594:04
118.18:004:04
128.18:004:04
138.08:014:04
148.08:024:04
158.08:034:04
168.08:044:04
178.08:044:05
188.08:054:05
198.08:064:05
208.08:064:06
218.08:074:06
228.08:074:06
238.08:084:07
248.08:084:07
258.08:084:08
268.08:094:09
278.08:094:09
288.08:094:10
298.08:094:11
308.08:104:12
318.08:104:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.77 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.77 kWh/m² to a high of 5.91 kWh/m² in July across the year — December's 0.77 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.8Dim
20.8Dim
30.8Dim
40.8Dim
50.8Dim
60.8Dim
70.8Dim
80.8Dim
90.8Dim
100.8Dim
110.8Dim
120.7Dim
130.7Dim
140.7Dim
150.7Dim
160.7Dim
170.7Dim
180.7Dim
190.7Dim
200.7Dim
210.7Dim
220.7Dim
230.7Dim
240.8Dim
250.8Dim
260.8Dim
270.8Dim
280.8Dim
290.8Dim
300.8Dim
310.8Dim
Planning a trip in December

Hazard calendar for Chilliwack-Downtown

In seasonPeak

In December, Chilliwack-Downtown sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Chilliwack-Downtown's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Chilliwack-Downtown?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
7th-best month of the year

December is a weaker month for outdoor sightseeing in Chilliwack-Downtown.

What to pack for Chilliwack-Downtown in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Chilliwack-Downtown sees daytime highs around 2°C and nights near -2°C. Pack a warm layer, a heavy coat and rain gear. About 20 days see rain.

a warm layera heavy coatrain gear

UV index in Chilliwack-Downtown in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chilliwack-Downtown peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 17 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 17UV 8Dec 17UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr4Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Chilliwack-Downtown in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Chilliwack-Downtown is worst in August — around 21 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (December, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1620 µg/m³Dec 206 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb9Good
Mar11Good
Apr11Good
May12Good
Jun12Good
Jul13Moderate
Aug21Moderate
Sep12Good
Oct11Good
Nov9Good
Dec6Good
Location & terrain

Where is Chilliwack-Downtown?

Chilliwack-Downtown sits at 49.2°N, 122.0°W, 8 m above sea level, in Canada. The nearest listed city is Chilliwack, 1.0 km away.

Topography around Chilliwack-Downtown

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chilliwack-Downtown.

Within 3 km, the terrain around Chilliwack-Downtown has only modest variations in elevation — a maximum elevation change of 107 m around an average of 12 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,683 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,275 m.

The land around Chilliwack-Downtown is covered by trees (28%), artificial surfaces (28%) and grassland (26%) within 3 km, trees (62%) within 16 km, and trees (72%) within 80 km.

3 km
107 m
16 km
1,683 m
80 km
3,275 m
treesgrasslandcroplandartificial surfacesbare terrainsnow and icewater
December weather nearby: Chilliwack 1.0 km · Vedder Crossing 7.0 km · Abbotsford 24 km · Mission 25 km · Townline 31 km · Haney 47 km · Maple Ridge 47 km · Walnut Grove 50 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chilliwack-Downtown (49.1643°, -121.9591°, elevation 8 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).