Mission climate — normals and trends
Mission has a temperate oceanic climate, averaging 8.0 °C annually with 2,483 mm of rain per year.
Climate normals · ERA5
MissionBritish Columbia
- coords
- 49.13°, -122.30°
- period
- 1940–2025 · 86 yrs
The normals for this period
The average of every indicator across the whole window: temperature, water, sky, wind and notable days.
Mean daily temperature
8.0°C
Average daily high
11.9°C
Average daily low
4.3°C
Annual rainfall
2,483mm
Sunshine / day
7.8h
Mean relative humidity
79%
Average peak wind
8.6km/h
Seasonal range
16.6°C
Frost days (< 0 °C)
82 d/yr
Hot days (≥ 30 °C)
4 d/yr
Rainy days (≥ 1 mm)
188 d/yr
Annual snowfall
358.6 cm
Average feels-like high
10.3 °C
Average feels-like low
2.0 °C
Average peak gust
32.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
11.9 MJ/m²
Has the climate changed?
What the yearly averages say about warming here, and whether the slope is statistically solid.
+2.4 °C
since 1940
+0.3 °C per decade · r² = 0.51 · 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).
Climate month by month
How an average year unfolds: when it rains, when it turns hot, when the sun is out.
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
The most extreme days ever measured here, then the year-by-year detail.
Hottest day
40.8 °C
28 June 2021
Coldest day
-25.3 °C
14 January 1950
Wettest day
123 mm
3 November 1955
Windiest day
28.4 km/h
15 January 1951
Strongest gust
116.3 km/h
15 January 1951
Hottest feels-like
43.9 °C
28 June 2021
Coldest feels-like
-31.0 °C
14 January 1950
Snowiest day
38.6 cm
1 January 1965
Sunniest day
15.8 h
17 June 2025
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and compare it with the normal: warmer, drier, more extreme?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 4.8 °C | +2.4 °C | 94 mm | -237 mm |
| Feb | 3.2 °C | -1.5 °C | 198 mm | -55 mm |
| Mar | 8.6 °C | +1.3 °C | 333 mm | +86 mm |
| Apr | 13.8 °C | +3.0 °C | 148 mm | -30 mm |
| May | 16.0 °C | +0.8 °C | 107 mm | -16 mm |
| Jun | 18.8 °C | +0.6 °C | 50 mm | -53 mm |
| Jul | 22.6 °C | +0.8 °C | 25 mm | -38 mm |
| Aug | 23.3 °C | +1.5 °C | 91 mm | +17 mm |
| Sep | 20.6 °C | +2.0 °C | 62 mm | -74 mm |
| Oct | 12.4 °C | -0.1 °C | 276 mm | -2 mm |
| Nov | 8.4 °C | +2.3 °C | 365 mm | +11 mm |
| Dec | 5.5 °C | +2.6 °C | 552 mm | +208 mm |
The year's extremes
What was the weather like that day?
The weather actually measured on a given date, anywhere in the covered window.
Climate at a glance
What these normals say about the place, in a few sentences, and the notions needed to read them.
Mission (Canada) has a temperate oceanic climate (Cfb) under the Köppen-Geiger classification. Its mean annual temperature is 8.0 °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 July (16.7 °C on average) and the coldest is January (0.1 °C). Rainfall peaks in November.
Mission averages 82 frost days, 4 hot days (≥ 30 °C) and 188 rainy days per year.
Mission has warmed by +2.4 °C between 1940 and 2025, or +0.29 °C per decade. This trend is statistically significant.
The number of frost days there went from about 116 to 48 per year over the period.
The hottest day of the period reached 40.8 °C (on 28 June 2021) and the coldest -25.3 °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.
Compare Mission with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Mission
Other cities — Canada
Frequently asked questions
What is the climate of Mission?
Mission has a temperate oceanic climate (Köppen Cfb). Over 1940-2025, the average annual temperature is 8.0 °C and it receives 2,483 mm of precipitation per year.
What is the hottest day ever recorded in Mission?
The hottest day measured in Mission between 1940 and 2025 was 28 June 2021, reaching 40.8 °C.
What is the coldest day in Mission?
The coldest day measured in Mission between 1940 and 2025 was 14 January 1950, at -25.3 °C.
Does it snow in Mission?
Yes. Mission gets on average 358.6 cm of snow per year and has around 82 frost days.
Has the climate of Mission warmed?
Yes: Mission warmed by +2.4 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Mission?
The wettest day measured in Mission between 1940 and 2025 was 3 November 1955, with 123 mm of rain in 24 hours.
What was the windiest day in Mission?
The windiest day measured in Mission between 1940 and 2025 was 15 January 1951, with winds reaching 28.4 km/h.
What is the warmest month in Mission?
The warmest month in Mission is July (16.7 °C on average); the coldest is January (0.1 °C).
How much does it rain in Mission?
Mission receives on average 2,483 mm of precipitation per year, spread over about 188 rainy days.
Is it sunny in Mission?
Mission gets on average 7.8 hours of sunshine per day, roughly 2,847 hours per year over 1940-2025.
What is the biggest single-day snowfall in Mission?
The heaviest 24-hour snowfall measured in Mission between 1940 and 2025 was 1 January 1965, with 38.6 cm.
Are there tropical nights in Mission?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Mission.
What was the most extreme apparent temperature in Mission?
In Mission, between 1940 and 2025, the highest apparent temperature reached 43.9 °C on 28 June 2021, and the lowest was -31.0 °C on 14 January 1950.
These forecasts and records come from our own weather API. Developer documentation →