Crater Lake
Oregon, USA
Long-term weather forecast
Long-term weather forecast
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May weather forecast and Climate
Crater Lake, OR

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A beautiful landscape of the Crater Lake in Oregon, viewed from atop the Watchman
A beautiful landscape of the Crater Lake in Oregon, viewed from atop the Watchman's Peak, under a cloudy sky
May sees ample sunshine of 10 hours as the daylight lasts for a long 15 hours. The skies are clear for extended periods, and many trails become accessible. The lake is visible from the Rim Village as the dark atmosphere clears up substantially. In Crate Lake May receives abundant of snowfall, up to 20" (508mm) and moderate rainfall to the tune of 3.2" (81.3mm). The snowplows work vigorously to clear the roads, so drive slow and allow them to pass.
Temperatures average between 28°F (-2.2°C) to 50°F (10°C), so camping is a challenge for amateurs.
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  • The average high temperature in May: 49.2°F

The warmest month (with the highest average high temperature) is August (69.7°F).
The month with the lowest average high temperature is December (33.6°F).

  • The average low temperature in May: 28.4°F

Months with the highest average low temperature are July and August (40.5°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).

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  • The average rainfall in May: 3.6"

The wettest month (with the highest rainfall) is December (11.6").
Driest months (with the lowest rainfall) are July and August (1").

  • The average rainfall days in May: 11.2 days

The month with the highest number of rainy days is March (18.2 days).
The month with the lowest number of rainy days is July (3.9 days).

  • The average snowfall in May: 15.9"

The month with the highest snowfall is December (91.1").
The month with the lowest snowfall is August (0").

  • The average snowfall days in May: 5.9 days

The month with the highest number of snowfall days is December (16.4 days).
The month with the lowest number of snowfall days is August (0 days).

  • The average daylight in May: 15h

Months with the longest days are May, June and July (Average daylight: 15h).
Months with shortest days are January and December (Average daylight: 9h).

  • The average sunshine in May: 10h

The month with most sunshine is July (Average sunshine: 12h).
Months with least sunshine are November and December (Average sunshine: 3).

  • The average UV index in May: 8

Months with the highest UV index are June and July (UV index 9).
The month with the lowest UV index is December (UV index 1).

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