Woodburn climate — normals and trends
Woodburn (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 11.6 °C and it receives 1,234 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 (19.9 °C on average) and the coldest is January (4.6 °C). Rainfall peaks in December.
Woodburn averages 35 frost days, 25 hot days (≥ 30 °C) and 142 rainy days per year.
Woodburn has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.
The number of frost days there went from about 43 to 27 per year over the period.
The hottest day of the period reached 46.7 °C (on 28 June 2021) and the coldest -22.5 °C (on 31 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
WoodburnOregon
- coords
- 45.14°, -122.86°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
11.6°C
Average daily high
17.0°C
Average daily low
6.9°C
Annual rainfall
1,234mm
Sunshine / day
8.8h
Mean relative humidity
74%
Average peak wind
13.3km/h
Seasonal range
15.3°C
Frost days (< 0 °C)
35 d/yr
Hot days (≥ 30 °C)
25 d/yr
Rainy days (≥ 1 mm)
142 d/yr
Annual snowfall
17.4 cm
Average feels-like high
15.5 °C
Average feels-like low
4.8 °C
Average peak gust
31.6 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
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.44 · 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
46.7 °C
28 June 2021
Coldest day
-22.5 °C
31 January 1950
Wettest day
97 mm
24 November 1960
Windiest day
51.2 km/h
14 November 1981
Strongest gust
114.5 km/h
14 December 2006
Hottest feels-like
47.8 °C
28 June 2021
Coldest feels-like
-26.9 °C
31 January 1950
Snowiest day
13.7 cm
20 January 1943
Sunniest day
15.2 h
17 June 2004
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 | 8.8 °C | +0.8 °C | 92 mm | -90 mm |
| Feb | 9.5 °C | -0.8 °C | 154 mm | +11 mm |
| Mar | 13.6 °C | +0.9 °C | 210 mm | +65 mm |
| Apr | 18.1 °C | +2.6 °C | 59 mm | -42 mm |
| May | 20.4 °C | +1.1 °C | 35 mm | -32 mm |
| Jun | 25.1 °C | +2.4 °C | 21 mm | -20 mm |
| Jul | 29.7 °C | +2.3 °C | 1 mm | -10 mm |
| Aug | 29.7 °C | +2.4 °C | 14 mm | -4 mm |
| Sep | 25.6 °C | +1.6 °C | 32 mm | -13 mm |
| Oct | 16.9 °C | -0.4 °C | 102 mm | -5 mm |
| Nov | 12.5 °C | +1.3 °C | 145 mm | -35 mm |
| Dec | 11.2 °C | +3.1 °C | 264 mm | +71 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 Woodburn?
Woodburn has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 11.6 °C and it receives 1,234 mm of precipitation per year.
What is the hottest day ever recorded in Woodburn?
The hottest day measured in Woodburn between 1940 and 2025 was 28 June 2021, reaching 46.7 °C.
What is the coldest day in Woodburn?
The coldest day measured in Woodburn between 1940 and 2025 was 31 January 1950, at -22.5 °C.
Does it snow in Woodburn?
Yes. Woodburn gets on average 17.4 cm of snow per year and has around 35 frost days.
Has the climate of Woodburn warmed?
Yes: Woodburn warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Woodburn?
The wettest day measured in Woodburn between 1940 and 2025 was 24 November 1960, with 97 mm of rain in 24 hours.
What was the windiest day in Woodburn?
The windiest day measured in Woodburn between 1940 and 2025 was 14 November 1981, with winds reaching 51.2 km/h.
What is the warmest month in Woodburn?
The warmest month in Woodburn is July (19.9 °C on average); the coldest is January (4.6 °C).
How much does it rain in Woodburn?
Woodburn receives on average 1,234 mm of precipitation per year, spread over about 142 rainy days.
Is it sunny in Woodburn?
Woodburn gets on average 8.8 hours of sunshine per day, roughly 3,212 hours per year over 1940-2025.
What is the biggest single-day snowfall in Woodburn?
The heaviest 24-hour snowfall measured in Woodburn between 1940 and 2025 was 20 January 1943, with 13.7 cm.
Are there tropical nights in Woodburn?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Woodburn.
What was the most extreme apparent temperature in Woodburn?
In Woodburn, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 28 June 2021, and the lowest was -26.9 °C on 31 January 1950.
Compare Woodburn with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Woodburn