McKinleyville climate — normals and trends
McKinleyville (United States) has a warm-summer mediterranean climate (Csb) under the Köppen-Geiger classification. Its mean annual temperature is 10.7 °C and it receives 1,489 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 (15.1 °C on average) and the coldest is January (6.9 °C). Rainfall peaks in December.
McKinleyville averages 5 frost days, 0 hot days (≥ 30 °C) and 107 rainy days per year.
McKinleyville has warmed by +0.6 °C between 1940 and 2025, or +0.07 °C per decade. This trend is statistically significant.
The number of frost days there went from about 8 to 2 per year over the period.
The hottest day of the period reached 30.9 °C (on 28 September 2020) and the coldest -11.4 °C (on 8 December 1972).
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
McKinleyvilleCalifornia
- coords
- 40.95°, -124.10°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
10.7°C
Average daily high
14.3°C
Average daily low
7.7°C
Annual rainfall
1,489mm
Sunshine / day
10.0h
Mean relative humidity
80%
Average peak wind
16.1km/h
Seasonal range
8.2°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
107 d/yr
Annual snowfall
42.3 cm
Average feels-like high
12.8 °C
Average feels-like low
5.3 °C
Average peak gust
34.8 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
16.9 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+0.6 °C
since 1940
+0.1 °C per decade · r² = 0.12 · 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
30.9 °C
28 September 2020
Coldest day
-11.4 °C
8 December 1972
Wettest day
148 mm
22 December 1964
Windiest day
46.7 km/h
12 December 1995
Strongest gust
123.1 km/h
10 November 1983
Hottest feels-like
31.4 °C
15 July 1972
Coldest feels-like
-16.5 °C
8 December 1972
Snowiest day
16.3 cm
28 December 1965
Sunniest day
14.8 h
15 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 | 12.0 °C | +1.8 °C | 173 mm | -80 mm |
| Feb | 9.9 °C | -1.0 °C | 276 mm | +77 mm |
| Mar | 10.9 °C | -0.4 °C | 329 mm | +124 mm |
| Apr | 13.6 °C | +1.1 °C | 80 mm | -30 mm |
| May | 14.4 °C | -0.1 °C | 27 mm | -40 mm |
| Jun | 17.0 °C | +0.3 °C | 2 mm | -22 mm |
| Jul | 18.4 °C | -0.6 °C | 2 mm | -3 mm |
| Aug | 19.6 °C | +0.5 °C | 2 mm | -9 mm |
| Sep | 19.0 °C | +0.2 °C | 50 mm | +24 mm |
| Oct | 15.4 °C | -0.6 °C | 104 mm | -3 mm |
| Nov | 14.1 °C | +1.7 °C | 176 mm | -36 mm |
| Dec | 11.9 °C | +1.6 °C | 312 mm | +42 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 McKinleyville?
McKinleyville has a warm-summer mediterranean climate (Köppen Csb). Over 1940-2025, the average annual temperature is 10.7 °C and it receives 1,489 mm of precipitation per year.
What is the hottest day ever recorded in McKinleyville?
The hottest day measured in McKinleyville between 1940 and 2025 was 28 September 2020, reaching 30.9 °C.
What is the coldest day in McKinleyville?
The coldest day measured in McKinleyville between 1940 and 2025 was 8 December 1972, at -11.4 °C.
Does it snow in McKinleyville?
Yes. McKinleyville gets on average 42.3 cm of snow per year and has around 5 frost days.
Has the climate of McKinleyville warmed?
Yes: McKinleyville warmed by +0.6 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in McKinleyville?
The wettest day measured in McKinleyville between 1940 and 2025 was 22 December 1964, with 148 mm of rain in 24 hours.
What was the windiest day in McKinleyville?
The windiest day measured in McKinleyville between 1940 and 2025 was 12 December 1995, with winds reaching 46.7 km/h.
What is the warmest month in McKinleyville?
The warmest month in McKinleyville is August (15.1 °C on average); the coldest is January (6.9 °C).
How much does it rain in McKinleyville?
McKinleyville receives on average 1,489 mm of precipitation per year, spread over about 107 rainy days.
Is it sunny in McKinleyville?
McKinleyville gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.
What is the biggest single-day snowfall in McKinleyville?
The heaviest 24-hour snowfall measured in McKinleyville between 1940 and 2025 was 28 December 1965, with 16.3 cm.
Are there tropical nights in McKinleyville?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in McKinleyville.
What was the most extreme apparent temperature in McKinleyville?
In McKinleyville, between 1940 and 2025, the highest apparent temperature reached 31.4 °C on 15 July 1972, and the lowest was -16.5 °C on 8 December 1972.
Compare McKinleyville with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around McKinleyville