Paso Robles climate — normals and trends
Paso Robles (United States) has a hot-summer mediterranean climate (Csa) under the Köppen-Geiger classification. Its mean annual temperature is 15.0 °C and it receives 344 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 (22.0 °C on average) and the coldest is January (8.2 °C). Rainfall peaks in February.
Paso Robles averages 12 frost days, 56 hot days (≥ 30 °C) and 37 rainy days per year.
Paso Robles has warmed by +1.2 °C between 1940 and 2025, or +0.14 °C per decade. This trend is statistically significant.
The number of frost days there went from about 20 to 4 per year over the period.
The hottest day of the period reached 42.6 °C (on 26 July 1945) and the coldest -7.3 °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
Paso RoblesCalifornia
- coords
- 35.63°, -120.69°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
15.0°C
Average daily high
22.0°C
Average daily low
9.1°C
Annual rainfall
344mm
Sunshine / day
11.1h
Mean relative humidity
64%
Average peak wind
13.0km/h
Seasonal range
13.8°C
Frost days (< 0 °C)
12 d/yr
Hot days (≥ 30 °C)
56 d/yr
Rainy days (≥ 1 mm)
37 d/yr
Annual snowfall
0.2 cm
Average feels-like high
21.2 °C
Average feels-like low
7.5 °C
Average peak gust
30.6 km/h
Tropical nights (≥ 20 °C)
2 d/yr
Solar radiation
20.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+1.2 °C
since 1940
+0.1 °C per decade · r² = 0.33 · 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
42.6 °C
26 July 1945
Coldest day
-7.3 °C
22 December 1990
Wettest day
78 mm
10 March 1995
Windiest day
41.9 km/h
9 February 1962
Strongest gust
110.9 km/h
3 February 1998
Hottest feels-like
45.0 °C
13 August 1996
Coldest feels-like
-11.5 °C
22 December 1990
Snowiest day
2.3 cm
21 January 1962
Sunniest day
14.0 h
17 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 | 16.7 °C | +2.4 °C | 13 mm | -56 mm |
| Feb | 17.3 °C | +1.7 °C | 64 mm | -6 mm |
| Mar | 16.9 °C | -0.5 °C | 60 mm | -2 mm |
| Apr | 20.8 °C | +0.3 °C | 8 mm | -19 mm |
| May | 25.7 °C | +1.8 °C | 1 mm | -7 mm |
| Jun | 27.0 °C | -0.6 °C | 0 mm | -2 mm |
| Jul | 26.5 °C | -3.6 °C | 0 mm | -0 mm |
| Aug | 29.7 °C | -0.1 °C | 0 mm | -1 mm |
| Sep | 26.8 °C | -1.3 °C | 11 mm | +7 mm |
| Oct | 22.5 °C | -1.4 °C | 23 mm | +10 mm |
| Nov | 18.5 °C | +0.2 °C | 64 mm | +31 mm |
| Dec | 16.1 °C | +1.5 °C | 99 mm | +43 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 Paso Robles?
Paso Robles has a hot-summer mediterranean climate (Köppen Csa). Over 1940-2025, the average annual temperature is 15.0 °C and it receives 344 mm of precipitation per year.
What is the hottest day ever recorded in Paso Robles?
The hottest day measured in Paso Robles between 1940 and 2025 was 26 July 1945, reaching 42.6 °C.
What is the coldest day in Paso Robles?
The coldest day measured in Paso Robles between 1940 and 2025 was 22 December 1990, at -7.3 °C.
Does it snow in Paso Robles?
Almost never: Paso Robles sees virtually no snow, with about 12 frost days per year.
Has the climate of Paso Robles warmed?
Yes: Paso Robles warmed by +1.2 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Paso Robles?
The wettest day measured in Paso Robles between 1940 and 2025 was 10 March 1995, with 78 mm of rain in 24 hours.
What was the windiest day in Paso Robles?
The windiest day measured in Paso Robles between 1940 and 2025 was 9 February 1962, with winds reaching 41.9 km/h.
What is the warmest month in Paso Robles?
The warmest month in Paso Robles is July (22.0 °C on average); the coldest is January (8.2 °C).
How much does it rain in Paso Robles?
Paso Robles receives on average 344 mm of precipitation per year, spread over about 37 rainy days.
Is it sunny in Paso Robles?
Paso Robles gets on average 11.1 hours of sunshine per day, roughly 4,052 hours per year over 1940-2025.
What is the biggest single-day snowfall in Paso Robles?
The heaviest 24-hour snowfall measured in Paso Robles between 1940 and 2025 was 21 January 1962, with 2.3 cm.
Are there tropical nights in Paso Robles?
Yes: Paso Robles has on average 2 tropical nights per year (temperature staying above 20 °C), over 1940-2025.
What was the most extreme apparent temperature in Paso Robles?
In Paso Robles, between 1940 and 2025, the highest apparent temperature reached 45.0 °C on 13 August 1996, and the lowest was -11.5 °C on 22 December 1990.
Compare Paso Robles with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Paso Robles