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Ramona (CA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Ramona, 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.

Ramona has a relatively dry climate with low precipitation, averaging 340 mm (13 in) of rainfall annually. It experiences a distinct dry season during certain months. Refer to our detailed charts below to see the seasonal variation.

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 83 mm (3.3 in) of precipitation, recorded across 9 rainy days.

In contrast, the driest month, June brings less rainfall, with 0.6 mm (0.02 in) over 0 rainy days.

December, the wettest month, has a maximum daytime temperature of 18°C (64°F). The city receives 231 hours of sunshine in this period. During the driest month June you can expect a temperature of 29°C (84°F). For more detailed insights into the city's temperatures, visit our Ramona 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.

Annual
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Legend heavy rainfall high moderate low almost none
Heavy annual rainfall has been defined as more than 1000 mm (39 in) precipitation. High: 600 mm (24 in) to 1000 mm (39 in). Moderate: 250 mm (9.8 in) to 600 mm (24 in). Low: less than 250 mm (9.8 in).

Ramona vs World: Rainfall Compared

Ramona's average annual precipitation is 340 mm (13 in). Let's compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 620 mm (24 in), evenly distributed across the year with no extreme wet or dry seasons.

Beijing, China, receives 560 mm (22 in) of annual precipitation, concentrated in the summer months.

Melbourne, Australia, has 690 mm (27 in) of rainfall annually, spread fairly evenly throughout the year.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

How is Precipitation Measured?

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.

  • Rainy Seasons: Many parts of the world have well-defined wet seasons where precipitation is distinctly higher. These are normally accompanied by lush vegetation and temperature patterns.
  • Dry Seasons: In areas where the climate is either desert or Mediterranean, the amount of precipitation is drastically reduced, leading to a shortage of water and arid conditions.
  • Interesting weather facts

    • The U.S. has a significant number of thunderstorms every year, with over 14.6 million taking place across the world annually.
    • Approximately 70% of lightning bolts strike land rather than oceans.
    • A storm named John was the longest-lasting Pacific tropical storm, continuing for 31 days. As it crossed the dateline twice, it changed status from a hurricane to a typhoon and back to a hurricane.

    For more detailed information about Ramona (CA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our Ramona (CA) Climate page.


    Current rainfall in Ramona (CA)

    More climate data for Ramona