Chowchilla climate — normals and trends
Chowchilla (United States) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 17.5 °C and it receives 384 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 (27.3 °C on average) and the coldest is January (8.4 °C). Rainfall peaks in January.
Chowchilla averages 9 frost days, 116 hot days (≥ 30 °C) and 44 rainy days per year.
Chowchilla 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 15 to 3 per year over the period.
The hottest day of the period reached 46.8 °C (on 6 September 2022) and the coldest -7.0 °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
ChowchillaCalifornia
- coords
- 37.12°, -120.26°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.5°C
Average daily high
24.3°C
Average daily low
11.3°C
Annual rainfall
384mm
Sunshine / day
11.0h
Mean relative humidity
58%
Average peak wind
13.3km/h
Seasonal range
18.9°C
Frost days (< 0 °C)
9 d/yr
Hot days (≥ 30 °C)
116 d/yr
Rainy days (≥ 1 mm)
44 d/yr
Annual snowfall
0.2 cm
Average feels-like high
23.5 °C
Average feels-like low
9.5 °C
Average peak gust
27.6 km/h
Tropical nights (≥ 20 °C)
32 d/yr
Solar radiation
19.8 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
46.8 °C
6 September 2022
Coldest day
-7.0 °C
22 December 1990
Wettest day
73 mm
9 February 1962
Windiest day
39.3 km/h
1 March 1983
Strongest gust
85.3 km/h
1 March 1983
Hottest feels-like
49.3 °C
11 July 2024
Coldest feels-like
-11.5 °C
22 December 1990
Snowiest day
1.4 cm
21 January 1962
Sunniest day
14.0 h
14 May 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 | 16.8 °C | +2.8 °C | 6 mm | -68 mm |
| Feb | 19.2 °C | +2.7 °C | 93 mm | +24 mm |
| Mar | 20.4 °C | +1.3 °C | 79 mm | +13 mm |
| Apr | 26.5 °C | +3.5 °C | 11 mm | -20 mm |
| May | 31.9 °C | +4.2 °C | 1 mm | -11 mm |
| Jun | 36.3 °C | +4.1 °C | 0 mm | -2 mm |
| Jul | 37.8 °C | +2.4 °C | 0 mm | -1 mm |
| Aug | 38.7 °C | +4.4 °C | 0 mm | -1 mm |
| Sep | 34.6 °C | +3.2 °C | 7 mm | +2 mm |
| Oct | 26.5 °C | +0.8 °C | 30 mm | +13 mm |
| Nov | 19.9 °C | +1.2 °C | 106 mm | +63 mm |
| Dec | 14.7 °C | +0.6 °C | 59 mm | -4 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 Chowchilla?
Chowchilla has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 17.5 °C and it receives 384 mm of precipitation per year.
What is the hottest day ever recorded in Chowchilla?
The hottest day measured in Chowchilla between 1940 and 2025 was 6 September 2022, reaching 46.8 °C.
What is the coldest day in Chowchilla?
The coldest day measured in Chowchilla between 1940 and 2025 was 22 December 1990, at -7.0 °C.
Does it snow in Chowchilla?
Almost never: Chowchilla sees virtually no snow, with about 9 frost days per year.
Has the climate of Chowchilla warmed?
Yes: Chowchilla warmed by +2.7 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Chowchilla?
The wettest day measured in Chowchilla between 1940 and 2025 was 9 February 1962, with 73 mm of rain in 24 hours.
What was the windiest day in Chowchilla?
The windiest day measured in Chowchilla between 1940 and 2025 was 1 March 1983, with winds reaching 39.3 km/h.
What is the warmest month in Chowchilla?
The warmest month in Chowchilla is July (27.3 °C on average); the coldest is January (8.4 °C).
How much does it rain in Chowchilla?
Chowchilla receives on average 384 mm of precipitation per year, spread over about 44 rainy days.
Is it sunny in Chowchilla?
Chowchilla gets on average 11.0 hours of sunshine per day, roughly 4,015 hours per year over 1940-2025.
What is the biggest single-day snowfall in Chowchilla?
The heaviest 24-hour snowfall measured in Chowchilla between 1940 and 2025 was 21 January 1962, with 1.4 cm.
Are there tropical nights in Chowchilla?
Yes: Chowchilla has on average 32 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Chowchilla?
In Chowchilla, between 1940 and 2025, the highest apparent temperature reached 49.3 °C on 11 July 2024, and the lowest was -11.5 °C on 22 December 1990.
Compare Chowchilla with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Chowchilla