North Cascades National Park (WA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit North Cascades National Park.
Climate overview of North Cascades National Park
Temperatures in North Cascades National Park, Washington State, United States of America, vary greatly throughout the year. August is the hottest month at 21°C (70°F), while December is the coldest at 1°C (34°F).
The city receives considerable rain/snowfall, with around 2782 mm (110 in) annually. November is the wettest month. It has a distinct rainy season from October to March.
North Cascades National Park Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in North Cascades National Park — and find the best time to visit.
Monthly Temperature in North Cascades National Park
The climate in North Cascades National Park is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a pleasant 21°C (70°F) in August to a very cold 1°C (34°F) in the coolest month, December.
Nights vary from 10°C (50°F) in August to around -4°C (25°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in North Cascades National Park
North Cascades National Park has a notably wet climate with abundant precipitation, recording 2782 mm (110 in) of rain/snowfall per year. The climate in North Cascades National Park shows significant variation throughout the year. Expect heavy snow/rainfall in November, the wettest month, with an average of 480 mm (19 in) of precipitation over 24 snowy/rainy days.
In contrast, the driest month July offers drier and sunnier days, with around 47 mm (1.9 in) of rainfall over 9 rainy days. For more details, please visit our North Cascades National Park Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit North Cascades National Park
The wettest months are January, February, March, April, October, November and December, when precipitation is at its highest. Wondering where to travel based on your weather preferences? Our recommendation tool helps you find destinations with your ideal climate conditions. Use our weather planner to find your perfect destination.
Frequently asked questions about the climate in North Cascades National Park
What is the best time to visit North Cascades National Park?
July and August typically offer the most optimal weather in North Cascades National Park. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. North Cascades National Park has a distinct rainy season from October to March.
What temperatures can I expect in North Cascades National Park?
Daytime highs range from 1°C (34°F) in December to 21°C (70°F) in August. Nighttime lows range from -4°C (25°F) to 10°C (50°F). Temperatures vary considerably through the year.
How much rain does North Cascades National Park get?
Annual rainfall is around 2782 mm (110 in). November is the wettest month with 480 mm (19 in), while July is the driest with 47 mm (1.9 in). In the coldest months, precipitation may fall as snow/rain.
North Cascades National Park 3-Day Forecast
North Cascades National Park (WA) 3-Day Forecast
North Cascades National Park on the map
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