Crater Lake
Oregon, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Crater Lake, OR

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
August is a warm summer month and the least snowy period in Crater Lake with the average temperatures in the 41°F (5°C) to 70°F (21.1°C).
The snowfall is almost absent, and even the precipitation remains below an inch during the long and sunny days. The lake waters are of a bright blue hue and extremely clear, which makes swimming and the trip to the Wizard Island near the western shoreline enjoyable.
Fishing, camping, and lodging are favorite activities in August in Crate Lake and the surrounding park area.

What is the warmest month in Crater Lake?

With an average high-temperature of 69.6°F (20.9°C) and an average low-temperature of 40.5°F (4.7°C), August is the warmest month in Crater Lake.

What is the temperature in August in Crater Lake?

The average high-temperature, in August, in Crater Lake, is 69.6°F (20.9°C), while the average low-temperature is 40.5°F (4.7°C).

How many days does it rain in August in Crater Lake?

In Crater Lake, in August, during 4 rainfall days, 1" (25.4mm) of precipitation is typically accumulated.

What is the driest month in Crater Lake?

The month with the least rainfall in Crater Lake, Oregon, is August when the rain falls for 4 days and typically collects 1" (25.4mm) of precipitation.

Does it snow in Crater Lake in August?

In August, in Crater Lake, it doesn't snow. July is the latest month when it typically snows.

When it does not snow in Crater Lake?

August is the only month when snow does not fall in Crater Lake, Oregon.

What is the average length of the day in August in Crater Lake?

In Crater Lake, the average length of the day in August is 13.9h.

How many hours of sunshine does Crater Lake have in August?

The average sunshine in August in Crater Lake is 11h.

How high is the UV index in August in Crater Lake?

In August, the average daily maximum UV index in Crater Lake is 8. A UV Index of 8 to 10 symbolizes a very high health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Crater Lake, OR
  • Average high temperature in August: 69.7°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).

  • Average low temperature in August: 40.5°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).

Average rainfall in August - Crater Lake, OR
  • Average rainfall in August: 1"

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

Average rainfall days in August - Crater Lake, OR
  • Average rainfall days in August: 4 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).

Average snowfall in August - Crater Lake, OR
  • Average snowfall in August: 0"

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

Average snowfall days in August - Crater Lake, OR
  • Average snowfall days in August: 0 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).

Average daylight in August / Average sunshine in August - Crater Lake, OR
  • Average daylight in August: 13.9h

The month with the longest days is June (Average daylight: 15.3h).
The month with shortest days is December (Average daylight: 9.1h).

  • Average sunshine in August: 11h

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

Average UV index in August - Crater Lake, OR
  • Average UV index in August: 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).