Park climate1991–2020 climate normals1,229 m source elevationNASA POWER

Long-term monthly averages for temperature, precipitation, humidity, wind, and daylight.

North Cascades National Park Climate Normals: Twelve-Month Atmospheric Profile

Name: North Cascades National Park monthly climate normals
Creator: NASA POWER

Review established climate patterns at a representative coordinate within North Cascades National Park, Washington, based on 1991 to 2020 NASA POWER data. These monthly metrics provide a foundation for comparing temperature, precipitation, humidity, wind, and daylight variations throughout the year. The values reflect long-term averages rather than current weather, forecasts, or localized conditions across the diverse park terrain.

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Annual climate pattern

Analyzing average daily precipitation trends alongside twelve months of thermal data

Annual Climate Patterns and Monthly Temperatures in North Cascades National Park

Monthly mean temperatures at a representative mountain coordinate range from an average mean of -5.49 degrees Celsius in December to 13.52 degrees Celsius in August, with average winter minimums dropping below -20 degrees Celsius. Based on 1991 to 2020 climatology data at 1228.63 meters, average daily precipitation rates peak in November at 8.32 millimeters per day and decrease to 1.61 millimeters per day in August.

Mean temperatureAverage minimum–maximum rangePrecipitation

Annual mean: 3.2 °C
Warmest month: August
Coolest month: December
Wettest month: November

Twelve-month climate

Analyze twelve-month cycles of average temperatures, daily precipitation rates, and daylight

North Cascades National Park Weather by Month and Long-Term Climate Normals

Baseline climate normals from a representative coordinate at 1228.63 meters elevation define the primary climatological patterns recorded from 1991 through 2020. Comparing twelve monthly records across average temperature bounds, average daily precipitation rates, relative humidity, wind speeds, and calculated daylight hours reveals the systemic seasonal transitions of North Cascades National Park.

	Mean temperature	Precipitation	Humidity	Wind speed	Daylight
January	-4.9 °C-19.6° to 1.5°	7.2 mm/day	96.4%	2 m/s	8.6 hours
February	-4.7 °C-18.5° to 1.9°	5.1 mm/day	96.3%	1.9 m/s	9.9 hours
March	-2.5 °C-15.2° to 4°	5.5 mm/day	95.5%	1.8 m/s	11.6 hours
April	0.6 °C-10.1° to 10.1°	3.9 mm/day	90.2%	1.6 m/s	13.5 hours
May	6.5 °C-3.7° to 19.9°	3.1 mm/day	81.1%	1.5 m/s	15.1 hours
June	9.9 °C0.8° to 23.8°	3 mm/day	80%	1.5 m/s	15.9 hours
July	13.4 °C3.9° to 26.4°	1.6 mm/day	77.4%	1.4 m/s	15.5 hours
August	13.5 °C4° to 27°	1.6 mm/day	75.4%	1.4 m/s	14.1 hours
September	10 °C-0.8° to 25.2°	2.8 mm/day	76.5%	1.5 m/s	12.3 hours
October	3.8 °C-6.7° to 18°	5.6 mm/day	85.4%	1.6 m/s	10.5 hours
November	-1.8 °C-15.4° to 7.4°	8.3 mm/day	94.2%	1.8 m/s	8.9 hours
December	-5.5 °C-20.4° to 1.7°	7 mm/day	96.8%	2 m/s	8.1 hours

Calculated climate highlights

Comparing long term monthly averages for temperature, precipitation, and daylight duration

North Cascades National Park Monthly Climate Highlights and Calculated Averages

Climatological comparisons identify the warmest, coolest, wettest, and driest periods based on long term monthly averages calculated from a central coordinate in North Cascades National Park. Evaluating multiple seasonal variables provides structured geographic context for the annual climate cycle without representing localized weather extremes or uniform wilderness conditions.

Warmest month: August13.5 °C
Coolest month: December-5.5 °C
Wettest month: November8.3 mm/day
Driest month: August1.6 mm/day
Most humid month: December96.8%
Windiest month: January2 m/s
Longest daylight: June15.9 hours

Interactive climate map

Compare National Park Climate Data Through an Interactive Global Map

Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.

Global National Park Climate Map

Other park climates

Contrast monthly temperature, precipitation, and daylight rhythms across diverse geographic settings.

Compare the Monthly Climate Profile of North Cascades National Park with Other National Parks

Comparing the climate profile of North Cascades National Park with other protected areas highlights distinct regional weather patterns and environmental differences. Analyzing standardized monthly data across various geographic settings clarifies how long term temperature and precipitation rhythms shape different conservation landscapes.