Troutdale (OR) Rainfall & Precipitation: Monthly Averages and Year-Round Insights

This page shows the average amount of rainfall per month in Troutdale (OR). The numbers are calculated over a 30-year period to provide a reliable average. Now, let’s explore all the details to give you a full picture.

Troutdale is known for its substantial rain/snowfall, with annual precipitation reaching 1336 mm.

Monthly Precipitation Levels

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

Troutdale can be quite wet during December, receiving approximately 215 mm of precipitation over 23 rainy days.

In contrast August, experiences much drier conditions, with 14 mm of rainfall, spread across 5 rainy days.

December, the city’s wettest month, has a maximum daytime temperature of 7°C. During the driest month August you can expect a temperature of 28°C. For more detailed insights into the city’s temperatures, visit our Troutdale 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

Troutdale’s average annual precipitation is 1336 mm. Let’s compare this to some popular worldwide tourist destinations:

In Barcelona, Spain, the average annual precipitation is 644 mm, evenly distributed across the year with no extreme wet or dry seasons.

In Shanghai, China, the annual average precipitation is 1347 mm, with a humid subtropical climate.

Adelaide, Australia, enjoys 511 mm of annual precipitation, with dry summers and wet winters.

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

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 Troutdale (OR)’s weather, including sunshine hours, humidity levels, and temperature data, visit our Troutdale (OR) Climate page.