North Cascades National Park (WA) Monthly Rainfall & Precipitation

This page shows both the average monthly rainfall and the number of rainy days in North Cascades National Park, Washington State, United States of America. These averages rely on historical data collected over 30 years, from 1990 to 2020. Let's now guide you through the details for a complete overview.

North Cascades National Park has a notably wet climate with abundant precipitation, recording 2782 mm (110 in) of rain/snowfall per year. It does, however, have a distinct rainy season during certain months. Have a look at our detailed charts below to see how precipitation varies throughout the year.

Monthly Precipitation Levels

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

The climate in North Cascades National Park shows significant variation throughout the year. Expect 480 mm (19 in) of precipitation during the wettest month November, distributed over 24 snowy/rainy days.

In contrast, July offers drier and sunnier days, with around 47 mm (1.9 in) of rainfall over 9 rainy days.

November, the wettest month, has a maximum daytime temperature of 4°C (39°F). During the driest month July you can expect a temperature of 21°C (70°F). For more detailed insights into the city's temperatures, visit our North Cascades National Park Temperature page.

North Cascades National Park's average annual precipitation is 2782 mm (110 in). Let's compare this to some popular worldwide tourist destinations:

Athens, Greece, receives an average annual precipitation of 400 mm (16 in), making it one of the drier Mediterranean climates with rainfall mostly in winter.

Osaka, Japan, experiences 1507 mm (59 in) of rainfall annually, spread across the year with wetter summers.

In Tokyo, Japan, the average annual precipitation is 1528 mm (60 in), with significant summer rains due to typhoon season.

Kuala Lumpur, Malaysia, receives 2529 mm (100 in) of annual rainfall, characteristic of its equatorial tropical rainforest climate, with consistent rainfall throughout the year and peak months during March and November.

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 North Cascades National Park (WA)'s weather, including sunshine hours, humidity levels, and temperature data, visit our North Cascades National Park (WA) Climate page.