Adelanto climate — normals and trends
Adelanto (United States) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 15.5 °C and it receives 265 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 (25.8 °C on average) and the coldest is January (6.7 °C). Rainfall peaks in February.
Adelanto averages 19 frost days, 90 hot days (≥ 30 °C) and 40 rainy days per year.
Adelanto has warmed by +2.7 °C between 1940 and 2025, or +0.32 °C per decade. This trend is statistically significant.
The number of frost days there went from about 34 to 4 per year over the period.
The hottest day of the period reached 42.3 °C (on 8 July 2024) and the coldest -12.4 °C (on 5 January 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
AdelantoCalifornia
- coords
- 34.58°, -117.41°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.5°C
Average daily high
21.9°C
Average daily low
9.9°C
Annual rainfall
265mm
Sunshine / day
11.4h
Mean relative humidity
46%
Average peak wind
14.0km/h
Seasonal range
19.1°C
Frost days (< 0 °C)
19 d/yr
Hot days (≥ 30 °C)
90 d/yr
Rainy days (≥ 1 mm)
40 d/yr
Annual snowfall
25.2 cm
Average feels-like high
19.6 °C
Average feels-like low
7.3 °C
Average peak gust
35.1 km/h
Tropical nights (≥ 20 °C)
27 d/yr
Solar radiation
21.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.67 · 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
42.3 °C
8 July 2024
Coldest day
-12.4 °C
5 January 1972
Wettest day
89 mm
1 March 1983
Windiest day
40.7 km/h
16 March 1964
Strongest gust
89.3 km/h
16 March 1964
Hottest feels-like
42.3 °C
15 July 2023
Coldest feels-like
-17.2 °C
5 January 1972
Snowiest day
29.8 cm
4 January 1974
Sunniest day
14.0 h
9 June 1940
Normals computed over complete calendar years 1940–2025.
A specific year
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Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | 13.1 °C | +1.2 °C | 20 mm | -27 mm |
| Feb | 17.6 °C | +4.1 °C | 38 mm | -12 mm |
| Mar | 16.6 °C | +0.7 °C | 50 mm | +9 mm |
| Apr | 21.2 °C | +1.3 °C | 7 mm | -13 mm |
| May | 26.2 °C | +1.8 °C | 14 mm | +6 mm |
| Jun | 32.2 °C | +2.5 °C | 2 mm | -1 mm |
| Jul | 33.3 °C | 0.0 °C | 2 mm | -7 mm |
| Aug | 34.4 °C | +1.8 °C | 16 mm | +5 mm |
| Sep | 29.0 °C | -0.4 °C | 22 mm | +14 mm |
| Oct | 23.7 °C | +0.3 °C | 29 mm | +18 mm |
| Nov | 18.7 °C | +2.0 °C | 86 mm | +64 mm |
| Dec | 16.8 °C | +4.5 °C | 72 mm | +34 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 Adelanto?
Adelanto has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 15.5 °C and it receives 265 mm of precipitation per year.
What is the hottest day ever recorded in Adelanto?
The hottest day measured in Adelanto between 1940 and 2025 was 8 July 2024, reaching 42.3 °C.
What is the coldest day in Adelanto?
The coldest day measured in Adelanto between 1940 and 2025 was 5 January 1972, at -12.4 °C.
Does it snow in Adelanto?
Yes. Adelanto gets on average 25.2 cm of snow per year and has around 19 frost days.
Has the climate of Adelanto warmed?
Yes: Adelanto warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Adelanto?
The wettest day measured in Adelanto between 1940 and 2025 was 1 March 1983, with 89 mm of rain in 24 hours.
What was the windiest day in Adelanto?
The windiest day measured in Adelanto between 1940 and 2025 was 16 March 1964, with winds reaching 40.7 km/h.
What is the warmest month in Adelanto?
The warmest month in Adelanto is July (25.8 °C on average); the coldest is January (6.7 °C).
How much does it rain in Adelanto?
Adelanto receives on average 265 mm of precipitation per year, spread over about 40 rainy days.
Is it sunny in Adelanto?
Adelanto gets on average 11.4 hours of sunshine per day, roughly 4,161 hours per year over 1940-2025.
What is the biggest single-day snowfall in Adelanto?
The heaviest 24-hour snowfall measured in Adelanto between 1940 and 2025 was 4 January 1974, with 29.8 cm.
Are there tropical nights in Adelanto?
Yes: Adelanto has on average 27 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Adelanto?
In Adelanto, between 1940 and 2025, the highest apparent temperature reached 42.3 °C on 15 July 2023, and the lowest was -17.2 °C on 5 January 1972.
Compare Adelanto with another city
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Nearby cities
The climate around Adelanto