Oro Valley (AZ) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Oro Valley (AZ). The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s break down all the details for a clearer picture.

Oro Valley typically sees modest rain/snowfall throughout the year, with an average annual precipitation of 358 mm.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm)

The seasons in Oro Valley, bring significant changes in precipitation. The wettest month, July, receives moderate rainfall, with an average of 87 mm of precipitation.

This rainfall is distributed across 14 rainy days. In contrast, the driest month, May, experiences much less rainfall, totaling 2.9 mm over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year.

July, the city’s wettest month, has a maximum daytime temperature of 37°C. During the driest month May you can expect a temperature of 32°C. For more detailed insights into the city’s temperatures, visit our Oro Valley Temperature page.

Annual Precipitation in the United States of America

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.

Amsterdam Precipitation Compared World Wide

Oro Valley’s average annual precipitation is 358 mm. Let’s compare this to some popular worldwide tourist destinations:

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

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

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

Ho Chi Minh City, Vietnam, receives 1955 mm of annual rainfall, with a pronounced wet season from May to November, typical of its tropical monsoon climate.

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.

Global Precipitation Patterns

Tropical Rainforests: In tropical regions, rainfall is generally abundant year-round. Areas near the equator, like the Amazon rainforest, can receive up to 3000 mm of rain annually.

Desert Regions: Deserts such as the Sahara and Arabian deserts typically see less than 250 mm of rainfall annually. Rainfall tends to be infrequent, but when it does occur, it is often intense.

Temperate Zones: In temperate regions, precipitation tends to be more evenly distributed, though areas closer to the ocean may see more rain in the winter months, and areas further inland experience drier summers.

Polar Regions: Precipitation in polar regions, like Antarctica, is extremely low, often falling as snow. Average annual precipitation in Antarctica is less than 200 mm, with some areas receiving as little as 50 mm annually.

For more detailed information about Oro Valley (AZ)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Oro Valley (AZ) Climate page.