Mendocino (CA) Monthly Rainfall & Precipitation
This page shows both the average monthly rainfall and the number of rainy days in Mendocino, California, United States of America. The numbers reflect climate data gathered over a 30-year period, from 1990 to 2020. Now, let's explore all the details to give you a full picture.
Generally, Mendocino experiences moderate precipitation patterns, averaging 986 mm (39 in) yearly. However, this average masks significant seasonal variation, including a distinct dry season during certain months that are clearly visible in our monthly breakdown below.
Monthly Precipitation Levels
The average number of days each month with precipitation (> 0.2 mm (0.01 in))
Significant seasonal changes in precipitation occur throughout the year. During the wettest month, December receives substantial rainfall, averaging 201 mm (7.9 in) of precipitation, recorded across 15 rainy days.
In contrast, the driest month, August brings less rainfall, with 2.3 mm (0.1 in) over 3 rainy days.
December, the wettest month, has a maximum daytime temperature of 13°C (55°F). During the driest month August you can expect a temperature of 19°C (66°F). For more detailed insights into the city's temperatures, visit our Mendocino Temperature page.
Annual Rainfall in the United States of America: City Comparison
The map below shows the annual precipitation across the United States of America. You can also select the different months in case you are interested in a specific month.
heavy rainfall
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moderate
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Mendocino vs World: Rainfall Compared
Mendocino's average annual precipitation is 986 mm (39 in). Let's compare this to some popular worldwide tourist destinations:
In Lisbon, Portugal, the average annual precipitation is 774 mm (30 in), characterized by wet winters and dry summers typical of the Mediterranean climate.
In Shanghai, China, the annual average precipitation is 1347 mm (53 in), with a humid subtropical climate.
Adelaide, Australia, enjoys 511 mm (20 in) of annual precipitation, with dry summers and wet winters.
Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm (66 in) of annual rainfall, with the heaviest precipitation occurring during September and October.
Precipitation amounts are measured using specific gauges installed at weather stations, collecting both rain and snow and any other type of precipitation. Rainfall is measured directly in millimeters, while that from snow and ice is obtained by melting it. Automated systems often incorporate heaters to make this easier.
Information from these stations is transmitted via Wi-Fi, satellite, GPS, or telephone connections to central monitoring networks. This information is immediately updated and integrated into weather models and forecasts.
- Mawsynram in India is noted as being the wettest place on earth, with over 11 meters (36 feet) of rain falling every year.
- In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm (0.004 inches) per year, with some years recording virtually no rainfall.
- Nearly 1,650 thunderstorm cells are estimated over the planet at any given time.
For more detailed information about Mendocino (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Mendocino (CA) Climate page.
