Auburn climate — normals and trends
Auburn (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 1,433 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 (17.7 °C on average) and the coldest is January (3.8 °C). Rainfall peaks in November.
Auburn averages 26 frost days, 2 hot days (≥ 30 °C) and 161 rainy days per year.
Auburn has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.
The number of frost days there went from about 38 to 14 per year over the period.
The hottest day of the period reached 36.9 °C (on 28 June 2021) and the coldest -15.9 °C (on 25 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
AuburnWashington
- coords
- 47.31°, -122.23°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.1°C
Average daily high
13.8°C
Average daily low
6.9°C
Annual rainfall
1,433mm
Sunshine / day
8.5h
Mean relative humidity
78%
Average peak wind
13.5km/h
Seasonal range
13.9°C
Frost days (< 0 °C)
26 d/yr
Hot days (≥ 30 °C)
2 d/yr
Rainy days (≥ 1 mm)
161 d/yr
Annual snowfall
79.6 cm
Average feels-like high
12.1 °C
Average feels-like low
4.5 °C
Average peak gust
32.7 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.6 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.5 °C
since 1940
+0.2 °C per decade · r² = 0.39 · 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
36.9 °C
28 June 2021
Coldest day
-15.9 °C
25 January 1950
Wettest day
86 mm
25 November 1998
Windiest day
46.7 km/h
20 January 1993
Strongest gust
121.0 km/h
20 January 1993
Hottest feels-like
40.2 °C
28 June 2021
Coldest feels-like
-20.6 °C
25 January 1950
Snowiest day
27.9 cm
18 November 1946
Sunniest day
15.7 h
18 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 | 7.0 °C | +0.9 °C | 76 mm | -125 mm |
| Feb | 6.7 °C | -1.0 °C | 156 mm | +4 mm |
| Mar | 10.5 °C | +0.8 °C | 198 mm | +46 mm |
| Apr | 14.1 °C | +1.7 °C | 82 mm | -29 mm |
| May | 16.6 °C | +0.5 °C | 48 mm | -32 mm |
| Jun | 20.2 °C | +1.3 °C | 15 mm | -46 mm |
| Jul | 23.5 °C | +1.0 °C | 3 mm | -22 mm |
| Aug | 23.3 °C | +0.8 °C | 42 mm | +8 mm |
| Sep | 21.0 °C | +1.4 °C | 24 mm | -44 mm |
| Oct | 14.0 °C | -0.3 °C | 158 mm | +24 mm |
| Nov | 10.9 °C | +1.8 °C | 186 mm | -23 mm |
| Dec | 8.8 °C | +2.4 °C | 352 mm | +145 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 Auburn?
Auburn has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 10.1 °C and it receives 1,433 mm of precipitation per year.
What is the hottest day ever recorded in Auburn?
The hottest day measured in Auburn between 1940 and 2025 was 28 June 2021, reaching 36.9 °C.
What is the coldest day in Auburn?
The coldest day measured in Auburn between 1940 and 2025 was 25 January 1950, at -15.9 °C.
Does it snow in Auburn?
Yes. Auburn gets on average 79.6 cm of snow per year and has around 26 frost days.
Has the climate of Auburn warmed?
Yes: Auburn warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Auburn?
The wettest day measured in Auburn between 1940 and 2025 was 25 November 1998, with 86 mm of rain in 24 hours.
What was the windiest day in Auburn?
The windiest day measured in Auburn between 1940 and 2025 was 20 January 1993, with winds reaching 46.7 km/h.
What is the warmest month in Auburn?
The warmest month in Auburn is August (17.7 °C on average); the coldest is January (3.8 °C).
How much does it rain in Auburn?
Auburn receives on average 1,433 mm of precipitation per year, spread over about 161 rainy days.
Is it sunny in Auburn?
Auburn gets on average 8.5 hours of sunshine per day, roughly 3,103 hours per year over 1940-2025.
What is the biggest single-day snowfall in Auburn?
The heaviest 24-hour snowfall measured in Auburn between 1940 and 2025 was 18 November 1946, with 27.9 cm.
Are there tropical nights in Auburn?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Auburn.
What was the most extreme apparent temperature in Auburn?
In Auburn, between 1940 and 2025, the highest apparent temperature reached 40.2 °C on 28 June 2021, and the lowest was -20.6 °C on 25 January 1950.
Compare Auburn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Auburn