Chilliwack-Downtown climate — normals and trends
Chilliwack-Downtown (Canada) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.6 °C and it receives 2,483 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is August (15.5 °C on average) and the coldest is January (-1.3 °C). Rainfall peaks in November.
Chilliwack-Downtown averages 115 frost days, 2 hot days (≥ 30 °C) and 192 rainy days per year.
Chilliwack-Downtown has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 154 to 76 per year over the period.
The hottest day of the period reached 39.0 °C (on 28 June 2021) and the coldest -27.4 °C (on 14 January 1950).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
Chilliwack-DowntownBritish Columbia
- coords
- 49.16°, -121.96°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.6°C
Average daily high
10.4°C
Average daily low
2.9°C
Annual rainfall
2,483mm
Sunshine / day
7.6h
Mean relative humidity
80%
Average peak wind
7.8km/h
Seasonal range
16.8°C
Frost days (< 0 °C)
115 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
192 d/yr
Annual snowfall
532.5 cm
Average feels-like high
8.6 °C
Average feels-like low
0.5 °C
Average peak gust
36.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.54 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
39.0 °C
28 June 2021
Coldest day
-27.4 °C
14 January 1950
Wettest day
116 mm
16 October 2003
Windiest day
26.2 km/h
15 January 1951
Strongest gust
133.2 km/h
15 January 1951
Hottest feels-like
41.5 °C
28 June 2021
Coldest feels-like
-32.8 °C
14 January 1950
Snowiest day
52.5 cm
19 January 1967
Sunniest day
15.9 h
16 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 3.4 °C | +2.5 °C | 93 mm | -244 mm |
| Feb | 1.5 °C | -1.7 °C | 193 mm | -65 mm |
| Mar | 6.9 °C | +1.2 °C | 323 mm | +79 mm |
| Apr | 12.2 °C | +3.1 °C | 144 mm | -30 mm |
| May | 14.9 °C | +1.4 °C | 110 mm | -12 mm |
| Jun | 17.7 °C | +1.0 °C | 52 mm | -51 mm |
| Jul | 21.4 °C | +1.0 °C | 25 mm | -40 mm |
| Aug | 22.2 °C | +1.7 °C | 97 mm | +21 mm |
| Sep | 19.8 °C | +2.4 °C | 55 mm | -77 mm |
| Oct | 11.0 °C | -0.1 °C | 264 mm | -5 mm |
| Nov | 7.0 °C | +2.4 °C | 372 mm | +17 mm |
| Dec | 4.0 °C | +2.6 °C | 586 mm | +236 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Chilliwack-Downtown?
Chilliwack-Downtown has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.6 °C and it receives 2,483 mm of precipitation per year.
What is the hottest day ever recorded in Chilliwack-Downtown?
The hottest day measured in Chilliwack-Downtown between 1940 and 2025 was 28 June 2021, reaching 39.0 °C.
What is the coldest day in Chilliwack-Downtown?
The coldest day measured in Chilliwack-Downtown between 1940 and 2025 was 14 January 1950, at -27.4 °C.
Does it snow in Chilliwack-Downtown?
Yes. Chilliwack-Downtown gets on average 532.5 cm of snow per year and has around 115 frost days.
Has the climate of Chilliwack-Downtown warmed?
Yes: Chilliwack-Downtown warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chilliwack-Downtown?
The wettest day measured in Chilliwack-Downtown between 1940 and 2025 was 16 October 2003, with 116 mm of rain in 24 hours.
What was the windiest day in Chilliwack-Downtown?
The windiest day measured in Chilliwack-Downtown between 1940 and 2025 was 15 January 1951, with winds reaching 26.2 km/h.
What is the warmest month in Chilliwack-Downtown?
The warmest month in Chilliwack-Downtown is August (15.5 °C on average); the coldest is January (-1.3 °C).
How much does it rain in Chilliwack-Downtown?
Chilliwack-Downtown receives on average 2,483 mm of precipitation per year, spread over about 192 rainy days.
Is it sunny in Chilliwack-Downtown?
Chilliwack-Downtown gets on average 7.6 hours of sunshine per day, roughly 2,774 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chilliwack-Downtown?
The heaviest 24-hour snowfall measured in Chilliwack-Downtown between 1940 and 2025 was 19 January 1967, with 52.5 cm.
Are there tropical nights in Chilliwack-Downtown?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Chilliwack-Downtown.
What was the most extreme apparent temperature in Chilliwack-Downtown?
In Chilliwack-Downtown, between 1940 and 2025, the highest apparent temperature reached 41.5 °C on 28 June 2021, and the lowest was -32.8 °C on 14 January 1950.
Compare Chilliwack-Downtown with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chilliwack-Downtown