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Climate - Crater Lake (Oregon)


Average weather, temperature, rainfall, sunshine hours

Flag - United States

Crater Lake, where it's located


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Climate chart - Crater Lake
The climate of Crater Lake is moderately continental, with cold, snowy winters and mild, sunny summers during the day, but with cold nights.
The national park is located in Oregon, in the Cascade Range. The lake, whose banks are located at 1,900 meters (6,200 feet) above sea level, was formed by the rain and snow that filled the caldera of Mount Mazama, a volcano that collapsed after an eruption that took place 7,700 years ago. The lake is 592 meters (1,942 ft) deep, and is therefore the deepest in the United States, and the second in North America after the Great Bear Lake. Before the eruption, Mount Mazama was 3,700 meters (12,100 ft) high. Today, the highest point in the area is Mount Scott, 2,723 meters (8,934 ft) high.
In winter, cold waves are possible, during which the temperature can drop to -20 °C (-4 °F) or even below. Snowfalls are very abundant: in an average year, almost 13 meters (505 inches) of snow fall. Usually, it snows from mid-October to mid-May. The accumulated snow is so high that it generally only melts in July.
In summer, the days are mild, and sometimes even hot, but at night it gets cold, and sometimes the temperature can drop below freezing.
The average temperature of the coldest month (December) is of -3.4 °C (25.9 °F), that of the warmest month (August) is of 13 °C (55.4 °F). Here are the average temperatures.
Crater Lake - Average temperatures (1991-2020)
MonthMin (°C)Max (°C)Mean (°C)Min (°F)Max (°F)Mean (°F)
January-71-3203326.6
February-71-3.2193426.2
March-62-2.1203628.2
April-55-0.2234031.7
May-294294939.1
June1147.4345745.3
July52012.9416955.1
August52113426955.4
September31710376350
October-1104.7305140.5
November-53-0.8233830.6
December-70-3.4193325.9
Year-2.18.83.328.247.838

Precipitation amounts to 1,695 millimeters (66.8 inches) per year: it is therefore abundant. It ranges from 20 mm (0.8 in) in the driest months (July, August) to 285 mm (11.2 in) in the wettest (December). Here is the average precipitation.
Crater Lake - Average precipitation
MonthMillimetersInchesDays
January2551018
February1907.517
March2007.918
April1556.116
May953.712
June602.47
July200.84
August200.84
September5025
October1204.711
November2459.617
December28511.218
Year169566.7146

On average, there are around 2,745 sunshine hours per year. Here are the average sunshine hours per day.
Crater Lake - Sunshine hours
MonthAverageTotal
January4125
February5145
March7215
April8240
May10310
June11330
July12370
August11340
September9270
October7215
November390
December395
Year7.52745

Crater Lake

Best Time


The best time to visit Crater Lake National Park is the summer, and in particular the months of July and August, which are the mildest and driest of the year.

Back to the climate of Oregon.


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