Grand Canyon Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Grand Canyon. The numbers are calculated over a 30-year period to provide a reliable average. Let's now guide you through the details for a complete overview.

Grand Canyon tends toward drier weather patterns, receiving approximately 313 mm of rain/snow per year.

Monthly Precipitation Levels

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

The seasons in Grand Canyon, bring significant changes in precipitation. The wettest month, August, receives moderate rainfall, with an average of 58 mm of precipitation.

This rainfall is distributed across 12 rainy days. In contrast, the driest month, June, experiences much less rainfall, totaling 7.2 mm over 2 rainy days. These distinct seasonal differences provide diverse experiences throughout the year.

August, the city’s wettest month, has a maximum daytime temperature of 30°C. During the driest month June you can expect a temperature of 31°C. For more detailed insights into the city’s temperatures, visit our Grand Canyon 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

Grand Canyon’s average annual precipitation is 313 mm. Let’s compare this to some popular worldwide tourist destinations:

In Toronto, Canada, annual precipitation averages [964 mm], with snowy winters and rainy summers.

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

Perth, Australia, receives 565 mm of rainfall annually, mostly during the winter months.

Bangkok, Thailand, experiences a tropical monsoon climate with 1668 mm of annual rainfall, with the heaviest precipitation occurring during September and October.

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.

Interesting weather facts

• Mawsynram in India is noted as being the wettest place on earth, with over 11 meters of rain falling every year.
• In contrast, Antofagasta in Chile is among the driest places on the planet, getting less than 0.1mm 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 Grand Canyon’s weather, including sunshine hours, humidity levels, and temperature data, visit our Grand Canyon Climate page.