Indio climate — normals and trends
Indio (United States) has a hot desert climate (BWh) under the Köppen-Geiger classification. Its mean annual temperature is 19.6 °C and it receives 152 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 (30.4 °C on average) and the coldest is January (10.1 °C). Rainfall peaks in January.
Indio averages 5 frost days, 138 hot days (≥ 30 °C) and 25 rainy days per year.
Indio has warmed by +2.7 °C between 1940 and 2025, or +0.31 °C per decade. This trend is statistically significant.
The number of frost days there went from about 11 to 0 per year over the period.
The hottest day of the period reached 46.2 °C (on 8 July 2024) and the coldest -8.7 °C (on 31 January 1957).
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
IndioCalifornia
- coords
- 33.72°, -116.22°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
19.6°C
Average daily high
25.9°C
Average daily low
13.3°C
Annual rainfall
152mm
Sunshine / day
11.5h
Mean relative humidity
36%
Average peak wind
10.9km/h
Seasonal range
20.3°C
Frost days (< 0 °C)
5 d/yr
Hot days (≥ 30 °C)
138 d/yr
Rainy days (≥ 1 mm)
25 d/yr
Annual snowfall
3.8 cm
Average feels-like high
24.1 °C
Average feels-like low
11.0 °C
Average peak gust
33.0 km/h
Tropical nights (≥ 20 °C)
88 d/yr
Solar radiation
21.5 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.7 °C
since 1940
+0.3 °C per decade · r² = 0.69 · 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
46.2 °C
8 July 2024
Coldest day
-8.7 °C
31 January 1957
Wettest day
69 mm
10 September 1976
Windiest day
29.1 km/h
13 December 1984
Strongest gust
93.2 km/h
30 November 1982
Hottest feels-like
45.5 °C
8 July 2024
Coldest feels-like
-13.2 °C
31 January 1957
Snowiest day
15.7 cm
29 January 1957
Sunniest day
13.9 h
5 July 2025
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 | 16.5 °C | +0.6 °C | 7 mm | -19 mm |
| Feb | 21.7 °C | +4.0 °C | 16 mm | -9 mm |
| Mar | 21.1 °C | +0.7 °C | 27 mm | +8 mm |
| Apr | 25.6 °C | +1.1 °C | 1 mm | -6 mm |
| May | 30.3 °C | +1.4 °C | 4 mm | +2 mm |
| Jun | 36.3 °C | +2.2 °C | 6 mm | +5 mm |
| Jul | 37.7 °C | +0.7 °C | 2 mm | -5 mm |
| Aug | 38.1 °C | +2.0 °C | 25 mm | +14 mm |
| Sep | 31.8 °C | -1.2 °C | 26 mm | +18 mm |
| Oct | 28.0 °C | +1.0 °C | 5 mm | -3 mm |
| Nov | 22.5 °C | +2.1 °C | 53 mm | +41 mm |
| Dec | 20.7 °C | +4.5 °C | 31 mm | +9 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 Indio?
Indio has a hot desert climate (Köppen BWh). Over 1940-2025, the average annual temperature is 19.6 °C and it receives 152 mm of precipitation per year.
What is the hottest day ever recorded in Indio?
The hottest day measured in Indio between 1940 and 2025 was 8 July 2024, reaching 46.2 °C.
What is the coldest day in Indio?
The coldest day measured in Indio between 1940 and 2025 was 31 January 1957, at -8.7 °C.
Does it snow in Indio?
Yes. Indio gets on average 3.8 cm of snow per year and has around 5 frost days.
Has the climate of Indio warmed?
Yes: Indio warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Indio?
The wettest day measured in Indio between 1940 and 2025 was 10 September 1976, with 69 mm of rain in 24 hours.
What was the windiest day in Indio?
The windiest day measured in Indio between 1940 and 2025 was 13 December 1984, with winds reaching 29.1 km/h.
What is the warmest month in Indio?
The warmest month in Indio is July (30.4 °C on average); the coldest is January (10.1 °C).
How much does it rain in Indio?
Indio receives on average 152 mm of precipitation per year, spread over about 25 rainy days.
Is it sunny in Indio?
Indio gets on average 11.5 hours of sunshine per day, roughly 4,198 hours per year over 1940-2025.
What is the biggest single-day snowfall in Indio?
The heaviest 24-hour snowfall measured in Indio between 1940 and 2025 was 29 January 1957, with 15.7 cm.
Are there tropical nights in Indio?
Yes: Indio has on average 88 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Indio?
In Indio, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 8 July 2024, and the lowest was -13.2 °C on 31 January 1957.
Compare Indio with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Indio