April weather forecast and climate
North Cascades National Park, WA

The lovely Picture Lake reflecting the trees on the shores and the distant Mount Shuksan in the North Cascades National Park, Washington, USA
The lovely Picture Lake reflecting the trees on the shores and the distant Mount Shuksan in the North Cascades National Park, Washington, USA

Weather in April

April is a frosty spring month in North Cascades National Park, Washington, with average temperature fluctuating between 28.4°F (-2°C) and 48.2°F (9°C).

Temperature

In April, the average high-temperature slightly increases, from a wintry 41°F (5°C) in March, to a frosty 48.2°F (9°C). In April, in North Cascades National Park, Washington, the average low-temperature is 28.4°F (-2°C).

Rainfall

In North Cascades National Park, in April, during 12 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. In North Cascades National Park, during the entire year, the rain falls for 157 days and collects up to 51.02" (1296mm) of precipitation.

Daylight

In North Cascades National Park, the average length of the day is 13.8h.

Sunshine

In April, the average sunshine in North Cascades National Park is 6h.

UV index

The average daily maximum UV index in North Cascades National Park is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: The daily maximum UV index of 5 in April interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
[Resources]

FAQ

What is the temperature in April in North Cascades National Park?

In April, the average high-temperature is 48.2°F (9°C), and the average low-temperature is 28.4°F (-2°C).

How many days does it rain in April in North Cascades National Park?

In North Cascades National Park, Washington, in April, it is raining for 12 days, with typically 3.07" (78mm) of accumulated precipitation.

What is the average length of the day in April in North Cascades National Park?

The average length of the day in April in North Cascades National Park, Washington, is 13.8h.

How many hours of sunshine does North Cascades National Park have in April?

In North Cascades National Park, Washington, the average sunshine in April is 6h.

What is the UV index reading in April in North Cascades National Park?

The average daily maximum UV index in April is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in April
North Cascades National Park, WA

Average temperature in April - North Cascades National Park, WA
  • Average high temperature in April: 48°F

The warmest months (with the highest average high temperature) are July and August (70°F).
Months with the lowest average high temperature are January and December (30°F).

  • Average low temperature in April: 28°F

Months with the highest average low temperature are July and August (45°F).
The coldest months (with the lowest average low temperature) are January and December (18°F).

[Resources]

Average rainfall in April
North Cascades National Park, WA

Average rainfall in April - North Cascades National Park, WA
  • Average rainfall in April: 3.1"

The wettest month (with the highest rainfall) is December (7.8").
The driest months (with the least rainfall) are July and August (1.7").

[Resources]

Average rainfall days in April
North Cascades National Park, WA

Average rainfall days in April - North Cascades National Park, WA
  • Average rainfall days in April: 12 days

The month with the highest number of rainy days is December (18 days).
The month with the least rainy days is July (8 days).

[Resources]

Average daylight in April /
Average sunshine in April
North Cascades National Park, WA

Average daylight in April / Average sunshine in April - North Cascades National Park, WA
  • Average daylight in April: 13.8h

The month with the longest days is June (Average daylight: 16.1h).
The month with the shortest days is December (Average daylight: 8.4h).

  • Average sunshine in April: 6h

The month with the most sunshine is July (Average sunshine: 9h).
Months with the least sunshine are January, November and December (Average sunshine: 2).

[Resources]

Average UV index in April
North Cascades National Park, WA

Average UV index in April - North Cascades National Park, WA
  • Average UV index in April: 5

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, November and December (UV index 1).

[Resources]