Westminster (CO) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Westminster (CO). 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.

With annual rain/snowfall averaging 442 mm, Westminster maintains relatively low precipitation levels throughout the seasons.

Monthly Precipitation Levels

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

Westminster can be quite wet during May, receiving approximately 73 mm of precipitation over 12 rainy days.

In contrast January, experiences much drier conditions, with 13 mm of snow/rainfall, spread across 5 snowy/rainy days.

May, the city’s wettest month, has a maximum daytime temperature of 21°C. During the driest month January you can expect a temperature of 8°C. For more detailed insights into the city’s temperatures, visit our Westminster 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

Westminster’s average annual precipitation is 442 mm. Let’s compare this to some popular worldwide tourist destinations:

Seville, Spain, experiences 541 mm of rainfall annually, with wet winters and dry summers typical of southern Spain.

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

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

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.

How Does Precipitation Affect Local Climate?

Precipitation has a very strong role in determining the local climate and ecosystem:

• 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.

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