Centralia climate — normals and trends
Centralia (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 10.1 °C and it receives 1,404 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 (17.3 °C on average) and the coldest is January (3.8 °C). Rainfall peaks in November.
Centralia averages 44 frost days, 9 hot days (≥ 30 °C) and 156 rainy days per year.
Centralia has warmed by +1.5 °C between 1940 and 2025, or +0.17 °C per decade. This trend is statistically significant.
The number of frost days there went from about 56 to 32 per year over the period.
The hottest day of the period reached 42.9 °C (on 28 June 2021) and the coldest -21.9 °C (on 17 December 1964).
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
CentraliaWashington
- coords
- 46.72°, -122.95°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
14.9°C
Average daily low
5.9°C
Annual rainfall
1,404mm
Sunshine / day
8.2h
Mean relative humidity
79%
Average peak wind
13.1km/h
Seasonal range
13.5°C
Frost days (< 0 °C)
44 d/yr
Hot days (≥ 30 °C)
9 d/yr
Rainy days (≥ 1 mm)
156 d/yr
Annual snowfall
39.3 cm
Average feels-like high
13.2 °C
Average feels-like low
3.6 °C
Average peak gust
34.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.37 · 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
42.9 °C
28 June 2021
Coldest day
-21.9 °C
17 December 1964
Wettest day
93 mm
25 November 1998
Windiest day
43.9 km/h
12 October 1962
Strongest gust
117.4 km/h
20 January 1993
Hottest feels-like
45.2 °C
28 June 2021
Coldest feels-like
-27.1 °C
17 December 1964
Snowiest day
27.3 cm
18 November 1946
Sunniest day
15.4 h
10 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 | 7.4 °C | +0.7 °C | 69 mm | -127 mm |
| Feb | 8.0 °C | -0.8 °C | 170 mm | +15 mm |
| Mar | 11.9 °C | +0.8 °C | 198 mm | +38 mm |
| Apr | 16.0 °C | +2.0 °C | 75 mm | -41 mm |
| May | 18.1 °C | +0.6 °C | 40 mm | -37 mm |
| Jun | 22.0 °C | +1.8 °C | 22 mm | -31 mm |
| Jul | 25.1 °C | +1.1 °C | 2 mm | -18 mm |
| Aug | 25.2 °C | +1.2 °C | 41 mm | +11 mm |
| Sep | 22.2 °C | +1.2 °C | 39 mm | -21 mm |
| Oct | 15.1 °C | 0.0 °C | 151 mm | +20 mm |
| Nov | 11.3 °C | +1.7 °C | 186 mm | -19 mm |
| Dec | 9.4 °C | +2.6 °C | 286 mm | +84 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 Centralia?
Centralia has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 1,404 mm of precipitation per year.
What is the hottest day ever recorded in Centralia?
The hottest day measured in Centralia between 1940 and 2025 was 28 June 2021, reaching 42.9 °C.
What is the coldest day in Centralia?
The coldest day measured in Centralia between 1940 and 2025 was 17 December 1964, at -21.9 °C.
Does it snow in Centralia?
Yes. Centralia gets on average 39.3 cm of snow per year and has around 44 frost days.
Has the climate of Centralia warmed?
Yes: Centralia warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Centralia?
The wettest day measured in Centralia between 1940 and 2025 was 25 November 1998, with 93 mm of rain in 24 hours.
What was the windiest day in Centralia?
The windiest day measured in Centralia between 1940 and 2025 was 12 October 1962, with winds reaching 43.9 km/h.
What is the warmest month in Centralia?
The warmest month in Centralia is August (17.3 °C on average); the coldest is January (3.8 °C).
How much does it rain in Centralia?
Centralia receives on average 1,404 mm of precipitation per year, spread over about 156 rainy days.
Is it sunny in Centralia?
Centralia gets on average 8.2 hours of sunshine per day, roughly 2,993 hours per year over 1940-2025.
What is the biggest single-day snowfall in Centralia?
The heaviest 24-hour snowfall measured in Centralia between 1940 and 2025 was 18 November 1946, with 27.3 cm.
Are there tropical nights in Centralia?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Centralia.
What was the most extreme apparent temperature in Centralia?
In Centralia, between 1940 and 2025, the highest apparent temperature reached 45.2 °C on 28 June 2021, and the lowest was -27.1 °C on 17 December 1964.
Compare Centralia with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Centralia