Lake Arrowhead (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Lake Arrowhead, California, United States of America. This average is based on long-term data collected between 1990 and 2020. Now, let's break down all the details for a clearer picture.

Generally, Lake Arrowhead experiences moderate precipitation patterns, averaging 631 mm (25 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 157 mm (6.2 in) of precipitation, recorded across 8 rainy days.

In contrast, the driest month, June brings less rainfall, with 0.7 mm (0.03 in) over 0 rainy days.

December, the wettest month, has a maximum daytime temperature of 10°C (50°F). The city receives 205 hours of sunshine in this period. During the driest month June you can expect a temperature of 26°C (79°F). For more detailed insights into the city's temperatures, visit our Lake Arrowhead Temperature page.

Lake Arrowhead's average annual precipitation is 631 mm (25 in). Let's compare this to some popular worldwide tourist destinations:

New York City, USA, receives 1276 mm (50 in) of rainfall annually, with precipitation evenly distributed throughout the year.

Meanwhile, Buenos Aires, Argentina, enjoys a humid subtropical climate with 1000 mm (39 in) of annual rainfall, mostly in the summer.

Perth, Australia, receives 565 mm (22 in) of rainfall annually, mostly during the winter months.

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 Lake Arrowhead (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Lake Arrowhead (CA) Climate page.