Los Banos climate — normals and trends
Los Banos (United States) has a cold semi-arid climate (BSk) under the Köppen-Geiger classification. Its mean annual temperature is 17.1 °C and it receives 300 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 (9.0 °C). Rainfall peaks in January.
Los Banos averages 3 frost days, 109 hot days (≥ 30 °C) and 42 rainy days per year.
Los Banos has warmed by +2.3 °C between 1940 and 2025, or +0.28 °C per decade. This trend is statistically significant.
The number of frost days there went from about 6 to 0 per year over the period.
The hottest day of the period reached 46.1 °C (on 6 September 2022) and the coldest -6.2 °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
Los BanosCalifornia
- coords
- 37.06°, -120.85°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
17.1°C
Average daily high
24.1°C
Average daily low
11.0°C
Annual rainfall
300mm
Sunshine / day
11.0h
Mean relative humidity
60%
Average peak wind
12.0km/h
Seasonal range
16.8°C
Frost days (< 0 °C)
3 d/yr
Hot days (≥ 30 °C)
109 d/yr
Rainy days (≥ 1 mm)
42 d/yr
Annual snowfall
0.2 cm
Average feels-like high
23.3 °C
Average feels-like low
9.6 °C
Average peak gust
27.7 km/h
Tropical nights (≥ 20 °C)
13 d/yr
Solar radiation
19.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.64 · 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
46.1 °C
6 September 2022
Coldest day
-6.2 °C
22 December 1990
Wettest day
68 mm
27 January 2021
Windiest day
39.3 km/h
29 October 1959
Strongest gust
86.8 km/h
20 January 2010
Hottest feels-like
46.8 °C
23 July 2006
Coldest feels-like
-10.5 °C
22 December 1990
Snowiest day
2.8 cm
21 January 1962
Sunniest day
14.0 h
9 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 | 17.3 °C | +3.2 °C | 6 mm | -53 mm |
| Feb | 19.3 °C | +2.7 °C | 60 mm | +5 mm |
| Mar | 20.6 °C | +1.3 °C | 59 mm | +8 mm |
| Apr | 26.0 °C | +2.9 °C | 8 mm | -16 mm |
| May | 30.8 °C | +3.4 °C | 0 mm | -10 mm |
| Jun | 34.7 °C | +3.2 °C | 0 mm | -2 mm |
| Jul | 36.0 °C | +1.5 °C | 0 mm | -1 mm |
| Aug | 36.8 °C | +3.4 °C | 0 mm | -1 mm |
| Sep | 33.3 °C | +2.5 °C | 5 mm | +1 mm |
| Oct | 25.6 °C | +0.1 °C | 30 mm | +17 mm |
| Nov | 19.7 °C | +1.0 °C | 67 mm | +35 mm |
| Dec | 14.6 °C | +0.3 °C | 44 mm | -6 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 Los Banos?
Los Banos has a cold semi-arid climate (Köppen BSk). Over 1940-2025, the average annual temperature is 17.1 °C and it receives 300 mm of precipitation per year.
What is the hottest day ever recorded in Los Banos?
The hottest day measured in Los Banos between 1940 and 2025 was 6 September 2022, reaching 46.1 °C.
What is the coldest day in Los Banos?
The coldest day measured in Los Banos between 1940 and 2025 was 22 December 1990, at -6.2 °C.
Does it snow in Los Banos?
Almost never: Los Banos sees virtually no snow, with about 3 frost days per year.
Has the climate of Los Banos warmed?
Yes: Los Banos warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Los Banos?
The wettest day measured in Los Banos between 1940 and 2025 was 27 January 2021, with 68 mm of rain in 24 hours.
What was the windiest day in Los Banos?
The windiest day measured in Los Banos between 1940 and 2025 was 29 October 1959, with winds reaching 39.3 km/h.
What is the warmest month in Los Banos?
The warmest month in Los Banos is July (25.8 °C on average); the coldest is January (9.0 °C).
How much does it rain in Los Banos?
Los Banos receives on average 300 mm of precipitation per year, spread over about 42 rainy days.
Is it sunny in Los Banos?
Los Banos 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 Los Banos?
The heaviest 24-hour snowfall measured in Los Banos between 1940 and 2025 was 21 January 1962, with 2.8 cm.
Are there tropical nights in Los Banos?
Yes: Los Banos has on average 13 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Los Banos?
In Los Banos, between 1940 and 2025, the highest apparent temperature reached 46.8 °C on 23 July 2006, and the lowest was -10.5 °C on 22 December 1990.
Compare Los Banos with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Los Banos