Washington (UT) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in Washington, Utah, United States of America. The figures are based on a 30-year period (1990–2020) to provide a reliable average. Let's explore the details to provide you with a complete overview.

Washington has a dry climate with very low precipitation, averaging 219 mm (8.6 in) of rain/snowfall annually.

Monthly Precipitation Levels

The average number of days each month with precipitation (> 0.2 mm (0.01 in))

The climate in Washington shows significant variation throughout the year. Expect 34 mm (1.3 in) of precipitation during the wettest month December, distributed over 6 rainy days.

In contrast, June offers drier and sunnier days, with around 2.8 mm (0.1 in) of rainfall over a single rainy day.

December, the wettest month, has a maximum daytime temperature of 11°C (52°F). During the driest month June you can expect a temperature of 37°C (99°F). For more detailed insights into the city's temperatures, visit our Washington Temperature page.

Washington's average annual precipitation is 219 mm (8.6 in). Let's compare this to some popular worldwide tourist destinations:

The climate in San Francisco, USA, is influenced by coastal weather, with 469 mm (18 in) of rainfall mostly during the winter months.

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

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

Singapore, situated near the equator, gets 2581 mm (102 in) of rainfall annually, with no distinct dry season and consistent monthly precipitation.

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.

• "Ginger" was the longest-lasting Atlantic tropical storm, which spun around the open ocean for 28 days in 1971.
• The world's largest snowflake was recorded in the Guinness Book of Records, at 38 cm (15 inches) wide and 20 cm (7.9 inches) thick. The snowflake fell at Fort Keogh, Montana, USA, on 28 January 1887.
• The greatest snowfall recorded was on Mt. Rainier, Washington State, USA, over 31.5 meters (103 feet) fell during the winter of 1972.

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