The weather in May in North Cascades National Park

It's pleasantly warm in May in North Cascades National Park with an average temperature of 20°C. Temperatures this month range from a low of 18°C to a high of 23°C. At night, you can expect temperatures between 9°C and 13°C.

Looking for great weather? May is a good time to be in North Cascades National Park. The temperatures are nice, and there’s not too much rain.

Average temperatures and precipitation

This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for North Cascades National Park, Washington. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.

Temperature records

With 35°C in 2023, North Cascades National Park reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 8°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 4°C to a highest value of 19°C.

Rainfall amount

In May, there is an average of 60 mm of precipitation, spread over 9 days. The wind speed is around 3 Bft, mostly coming from the South.

Daily weather in May for North Cascades National Park

Click on any day in May to get detailed info about the usual weather on that day in North Cascades National Park. Check out the historical temperatures and precipitation over the past 10 years on this day.

May weather comparison

  North Cascades National Park New York
Average temperature 20°C 22°C
Max. temperature 23°C 28°C
Min. temperature 9°C -5°C
Total precipitation 60 mm 105 mm
Rainy days 9 days 14 days

Start of May

The month of May starts in North Cascades National Park with mild temps, averaging around 20°C during the day and nights around 10°C.

Mid May

By mid-May, daytime temps rise to around 21°C, with nights around 12°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.

End of May

By the end of May, the average daytime temperature in North Cascades National Park is around 21°C, while nighttime temps are about 12°C. A shower might pop up, but overall, the weather will be dry and sunny.

UV index

The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Check out the climate of North Cascades National Park for all months and discover the best travel time

Temperature charts

These charts show the average temperatures in May in North Cascades National Park, Washington. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.

Daily Temperature in May in North Cascades National Park

Temperature in May in North Cascades National Park over the years

Precipitation charts

These charts show the average amount of precipitation in May in North Cascades National Park, Washington. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.

Daily Precipitation in May in North Cascades National Park

Total precipitation in May in North Cascades National Park over the years

Daily UV index in May in North Cascades National Park

This chart shows the average daily UV index in May in North Cascades National Park, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Weather experiences in May in North Cascades National Park

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Average weather in North Cascades National Park by month

Click on a month below to see detailed weather info for North Cascades National Park. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.