Marysville climate — normals and trends
Marysville (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 9.7 °C and it receives 1,732 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 (16.3 °C on average) and the coldest is January (4.1 °C). Rainfall peaks in November.
Marysville averages 17 frost days, 0 hot days (≥ 30 °C) and 172 rainy days per year.
Marysville 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 26 to 8 per year over the period.
The hottest day of the period reached 35.2 °C (on 29 July 2009) and the coldest -15.9 °C (on 16 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
MarysvilleWashington
- coords
- 48.05°, -122.18°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
9.7°C
Average daily high
13.0°C
Average daily low
7.0°C
Annual rainfall
1,732mm
Sunshine / day
8.4h
Mean relative humidity
79%
Average peak wind
15.2km/h
Seasonal range
12.2°C
Frost days (< 0 °C)
17 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
172 d/yr
Annual snowfall
67.9 cm
Average feels-like high
11.2 °C
Average feels-like low
4.5 °C
Average peak gust
27.5 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
12.1 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.7 °C
since 1940
+0.2 °C per decade · r² = 0.46 · 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
35.2 °C
29 July 2009
Coldest day
-15.9 °C
16 December 1964
Wettest day
95 mm
23 November 1986
Windiest day
52.3 km/h
12 December 1995
Strongest gust
96.1 km/h
13 February 1979
Hottest feels-like
38.0 °C
29 July 2009
Coldest feels-like
-21.8 °C
16 December 1964
Snowiest day
24.6 cm
21 January 1954
Sunniest day
15.8 h
17 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 | 6.7 °C | +0.5 °C | 93 mm | -141 mm |
| Feb | 6.9 °C | -0.8 °C | 183 mm | +7 mm |
| Mar | 10.4 °C | +0.9 °C | 220 mm | +48 mm |
| Apr | 13.6 °C | +1.6 °C | 92 mm | -38 mm |
| May | 16.0 °C | +0.8 °C | 76 mm | -16 mm |
| Jun | 19.0 °C | +1.5 °C | 23 mm | -53 mm |
| Jul | 22.0 °C | +1.5 °C | 14 mm | -25 mm |
| Aug | 22.0 °C | +1.2 °C | 110 mm | +62 mm |
| Sep | 19.9 °C | +1.8 °C | 34 mm | -56 mm |
| Oct | 13.6 °C | +0.2 °C | 172 mm | -10 mm |
| Nov | 10.8 °C | +2.0 °C | 276 mm | +27 mm |
| Dec | 8.5 °C | +2.2 °C | 382 mm | +138 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 Marysville?
Marysville has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 9.7 °C and it receives 1,732 mm of precipitation per year.
What is the hottest day ever recorded in Marysville?
The hottest day measured in Marysville between 1940 and 2025 was 29 July 2009, reaching 35.2 °C.
What is the coldest day in Marysville?
The coldest day measured in Marysville between 1940 and 2025 was 16 December 1964, at -15.9 °C.
Does it snow in Marysville?
Yes. Marysville gets on average 67.9 cm of snow per year and has around 17 frost days.
Has the climate of Marysville warmed?
Yes: Marysville warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Marysville?
The wettest day measured in Marysville between 1940 and 2025 was 23 November 1986, with 95 mm of rain in 24 hours.
What was the windiest day in Marysville?
The windiest day measured in Marysville between 1940 and 2025 was 12 December 1995, with winds reaching 52.3 km/h.
What is the warmest month in Marysville?
The warmest month in Marysville is August (16.3 °C on average); the coldest is January (4.1 °C).
How much does it rain in Marysville?
Marysville receives on average 1,732 mm of precipitation per year, spread over about 172 rainy days.
Is it sunny in Marysville?
Marysville gets on average 8.4 hours of sunshine per day, roughly 3,066 hours per year over 1940-2025.
What is the biggest single-day snowfall in Marysville?
The heaviest 24-hour snowfall measured in Marysville between 1940 and 2025 was 21 January 1954, with 24.6 cm.
Are there tropical nights in Marysville?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Marysville.
What was the most extreme apparent temperature in Marysville?
In Marysville, between 1940 and 2025, the highest apparent temperature reached 38.0 °C on 29 July 2009, and the lowest was -21.8 °C on 16 December 1964.
Compare Marysville with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Marysville