April weather forecast
Crater Lake, OR

The weather in Crater Lake in April exhibits a marked decrease in snowfall, symbolizing the end of the winter season with a drop to 46.7" (1186mm). The increased daylight hours and warming temperatures usher in the blooming spring season. The nature awakens from its winter slumber, and the frozen lake starts to manifest signs of thawing. A reduced amount of rainfall means clear days are more common, perfect for outdoor activities in the spring air. The evolving spring weather revitalizes the landscape, making it a feast for the eyes.

Temperature

The commencement of April in Crater Lake records an average high-temperature of a still cold 41.7°F (5.4°C), barely varying from March's 37.2°F (2.9°C). In the month of April, the average temperature dips to a freezing cold 22.6°F (-5.2°C) during the night.

Rainfall

In Crater Lake, during April, the rain falls for 15.5 days and regularly aggregates up to 5.47" (139mm) of precipitation. Throughout the year, there are 145.9 rainfall days, and 66.22" (1682mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through July, September through December. In Crater Lake, in April, during 12.2 snowfall days, 46.69" (1186mm) of snow is typically accumulated. In Crater Lake, during the entire year, snow falls for 101.3 days and aggregates up to 482.48" (12255mm) of snow.

Daylight

In Crater Lake, the average length of the day in April is 13h and 26min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:35 pm. On the last day of April, sunrise is at 6:02 am and sunset at 8:08 pm PDT.

Sunshine

In Crater Lake, the average sunshine in April is 8h.

UV index

In Crater Lake, the average daily maximum UV index in April is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 6 during April translates into the following recommendations:
Ward off overexposure. Defence against solar harm is crucial. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. Boost your sun resistance with garments that are densely woven yet spacious. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.