Arden-Arcade climate — normals and trends
Arden-Arcade (United States) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 16.3 °C and it receives 581 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 (23.7 °C on average) and the coldest is January (8.4 °C). Rainfall peaks in January.
Arden-Arcade averages 7 frost days, 95 hot days (≥ 30 °C) and 57 rainy days per year.
Arden-Arcade has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.
The number of frost days there went from about 11 to 3 per year over the period.
The hottest day of the period reached 47.7 °C (on 5 September 2022) and the coldest -6.7 °C (on 22 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
Arden-ArcadeCalifornia
- coords
- 38.60°, -121.38°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
16.3°C
Average daily high
23.3°C
Average daily low
10.4°C
Annual rainfall
581mm
Sunshine / day
10.6h
Mean relative humidity
62%
Average peak wind
13.8km/h
Seasonal range
15.3°C
Frost days (< 0 °C)
7 d/yr
Hot days (≥ 30 °C)
95 d/yr
Rainy days (≥ 1 mm)
57 d/yr
Annual snowfall
0.2 cm
Average feels-like high
22.3 °C
Average feels-like low
8.6 °C
Average peak gust
29.9 km/h
Tropical nights (≥ 20 °C)
5 d/yr
Solar radiation
18.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.0 °C
since 1940
+0.2 °C per decade · r² = 0.59 · 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
47.7 °C
5 September 2022
Coldest day
-6.7 °C
22 December 1990
Wettest day
129 mm
13 October 1962
Windiest day
50.1 km/h
4 January 2008
Strongest gust
104.8 km/h
4 January 2008
Hottest feels-like
47.8 °C
6 September 2022
Coldest feels-like
-11.3 °C
22 December 1990
Snowiest day
3.9 cm
16 February 1990
Sunniest day
14.2 h
29 June 2019
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 | 16.0 °C | +2.6 °C | 24 mm | -89 mm |
| Feb | 17.3 °C | +1.2 °C | 188 mm | +88 mm |
| Mar | 18.7 °C | +0.2 °C | 80 mm | -8 mm |
| Apr | 24.2 °C | +2.0 °C | 14 mm | -28 mm |
| May | 29.7 °C | +3.2 °C | 2 mm | -18 mm |
| Jun | 31.0 °C | +0.5 °C | 0 mm | -4 mm |
| Jul | 31.2 °C | -1.6 °C | 0 mm | -1 mm |
| Aug | 34.0 °C | +1.8 °C | 0 mm | -1 mm |
| Sep | 31.0 °C | +0.5 °C | 1 mm | -5 mm |
| Oct | 24.3 °C | -1.0 °C | 46 mm | +13 mm |
| Nov | 18.2 °C | +0.2 °C | 114 mm | +42 mm |
| Dec | 12.8 °C | -0.7 °C | 110 mm | +8 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 Arden-Arcade?
Arden-Arcade has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 16.3 °C and it receives 581 mm of precipitation per year.
What is the hottest day ever recorded in Arden-Arcade?
The hottest day measured in Arden-Arcade between 1940 and 2025 was 5 September 2022, reaching 47.7 °C.
What is the coldest day in Arden-Arcade?
The coldest day measured in Arden-Arcade between 1940 and 2025 was 22 December 1990, at -6.7 °C.
Does it snow in Arden-Arcade?
Almost never: Arden-Arcade sees virtually no snow, with about 7 frost days per year.
Has the climate of Arden-Arcade warmed?
Yes: Arden-Arcade warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Arden-Arcade?
The wettest day measured in Arden-Arcade between 1940 and 2025 was 13 October 1962, with 129 mm of rain in 24 hours.
What was the windiest day in Arden-Arcade?
The windiest day measured in Arden-Arcade between 1940 and 2025 was 4 January 2008, with winds reaching 50.1 km/h.
What is the warmest month in Arden-Arcade?
The warmest month in Arden-Arcade is July (23.7 °C on average); the coldest is January (8.4 °C).
How much does it rain in Arden-Arcade?
Arden-Arcade receives on average 581 mm of precipitation per year, spread over about 57 rainy days.
Is it sunny in Arden-Arcade?
Arden-Arcade gets on average 10.6 hours of sunshine per day, roughly 3,869 hours per year over 1940-2025.
What is the biggest single-day snowfall in Arden-Arcade?
The heaviest 24-hour snowfall measured in Arden-Arcade between 1940 and 2025 was 16 February 1990, with 3.9 cm.
Are there tropical nights in Arden-Arcade?
Yes: Arden-Arcade has on average 5 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Arden-Arcade?
In Arden-Arcade, between 1940 and 2025, the highest apparent temperature reached 47.8 °C on 6 September 2022, and the lowest was -11.3 °C on 22 December 1990.
Compare Arden-Arcade with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Arden-Arcade