Washougal climate — normals and trends
Washougal (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 10.0 °C and it receives 2,107 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 (18.1 °C on average) and the coldest is January (2.8 °C). Rainfall peaks in December.
Washougal averages 47 frost days, 14 hot days (≥ 30 °C) and 166 rainy days per year.
Washougal has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.
The number of frost days there went from about 60 to 34 per year over the period.
The hottest day of the period reached 44.7 °C (on 28 June 2021) and the coldest -23.5 °C (on 21 December 1990).
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
WashougalWashington
- coords
- 45.58°, -122.35°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.0°C
Average daily high
14.8°C
Average daily low
5.7°C
Annual rainfall
2,107mm
Sunshine / day
8.6h
Mean relative humidity
76%
Average peak wind
13.3km/h
Seasonal range
15.3°C
Frost days (< 0 °C)
47 d/yr
Hot days (≥ 30 °C)
14 d/yr
Rainy days (≥ 1 mm)
166 d/yr
Annual snowfall
111.3 cm
Average feels-like high
13.1 °C
Average feels-like low
3.1 °C
Average peak gust
37.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
13.8 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.6 °C
since 1940
+0.2 °C per decade · r² = 0.41 · 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
44.7 °C
28 June 2021
Coldest day
-23.5 °C
21 December 1990
Wettest day
161 mm
25 November 1999
Windiest day
40.7 km/h
8 January 1990
Strongest gust
129.2 km/h
14 December 2006
Hottest feels-like
43.7 °C
28 June 2021
Coldest feels-like
-28.8 °C
21 December 1990
Snowiest day
29.9 cm
31 January 1969
Sunniest day
15.3 h
20 June 2024
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 | 7.7 °C | +1.8 °C | 144 mm | -157 mm |
| Feb | 7.4 °C | -0.7 °C | 279 mm | +44 mm |
| Mar | 11.6 °C | +1.0 °C | 320 mm | +92 mm |
| Apr | 16.3 °C | +2.6 °C | 84 mm | -84 mm |
| May | 18.2 °C | +0.9 °C | 77 mm | -43 mm |
| Jun | 22.4 °C | +2.1 °C | 42 mm | -40 mm |
| Jul | 26.8 °C | +2.1 °C | 2 mm | -21 mm |
| Aug | 26.6 °C | +1.8 °C | 42 mm | +7 mm |
| Sep | 23.1 °C | +1.5 °C | 43 mm | -48 mm |
| Oct | 14.7 °C | -0.8 °C | 184 mm | -12 mm |
| Nov | 11.1 °C | +1.7 °C | 258 mm | -53 mm |
| Dec | 9.4 °C | +3.2 °C | 583 mm | +264 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 Washougal?
Washougal has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 10.0 °C and it receives 2,107 mm of precipitation per year.
What is the hottest day ever recorded in Washougal?
The hottest day measured in Washougal between 1940 and 2025 was 28 June 2021, reaching 44.7 °C.
What is the coldest day in Washougal?
The coldest day measured in Washougal between 1940 and 2025 was 21 December 1990, at -23.5 °C.
Does it snow in Washougal?
Yes. Washougal gets on average 111.3 cm of snow per year and has around 47 frost days.
Has the climate of Washougal warmed?
Yes: Washougal warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Washougal?
The wettest day measured in Washougal between 1940 and 2025 was 25 November 1999, with 161 mm of rain in 24 hours.
What was the windiest day in Washougal?
The windiest day measured in Washougal between 1940 and 2025 was 8 January 1990, with winds reaching 40.7 km/h.
What is the warmest month in Washougal?
The warmest month in Washougal is July (18.1 °C on average); the coldest is January (2.8 °C).
How much does it rain in Washougal?
Washougal receives on average 2,107 mm of precipitation per year, spread over about 166 rainy days.
Is it sunny in Washougal?
Washougal gets on average 8.6 hours of sunshine per day, roughly 3,139 hours per year over 1940-2025.
What is the biggest single-day snowfall in Washougal?
The heaviest 24-hour snowfall measured in Washougal between 1940 and 2025 was 31 January 1969, with 29.9 cm.
Are there tropical nights in Washougal?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Washougal.
What was the most extreme apparent temperature in Washougal?
In Washougal, between 1940 and 2025, the highest apparent temperature reached 43.7 °C on 28 June 2021, and the lowest was -28.8 °C on 21 December 1990.
Compare Washougal with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Washougal