Mount Rainier lies west of the Cascade Mountains, only 100 miles east of the Pacific Ocean, and rises to an elevation of 14,411 feet. Mount Rainier makes its own weather. Clouds often collect around the mountain forming a cap on the summit, indicating a change in weather.
Weather patterns at Mount Rainier are strongly influenced by the Pacific Ocean, elevation, and latitude. The climate is generally cool and rainy, with summer highs in the 60s and 70s. While July and August are the sunniest months of the year, rain is possible any day, and very likely in spring, fall, and winter.
The heaviest snowfall occurs between the elevation of 5,000 and 11,000 feet. Year round weather stations are located at Longmire (2761 feet), Ohanapecosh (1949 feet) and Paradise (5400 feet) ranger stations for recording precipitation, temperature, wind direction, and cloud cover. As one of the snowiest places on Earth, Paradise is worthy of a winter visit. The Paradise Ranger Station is known for its snowfall, holding a record for the most accumulated snowfall in a single year, 1122 inches (93.5 feet) of snowfall in 1971 - 1972. From November to late May, expect to find 10 to 20 feet of snow on the ground. Approximately 630 inches of snow falls in an average winter at Paradise.
Be aware, mountain weather is very changeable. Wet, cold weather can occur anytime of the year. While late July and August can be the driest, warmest time of the year, summer can also be wet and cool. Snow will remain at the 5,000 to 8,000 feet elevation well into mid July.
Hikers and mountain climbers should be prepared for changing weather. Pay attention to weather forecasts, both one day and long range, avalanche warnings, and special weather alerts. Have extra clothing, rain gear, and a tent for protection against storms anytime of the year. Know the weather forecast and plan your trip accordingly.
|Avg High - �F||36.0||40.4||44.3||51.6||60.7||66.4||74.6||73.7||68.3||57.3||44.0||38.1||54.7|
|Avg Low - �F||25.0||26.8||27.8||31.4||36.9||42.9||47.1||47.1||43.2||37.3||30.9||27.9||35.4|
|Avg Precip (in)||12.55||9.24||8.08||5.22||3.97||3.59||1.37||2.17||4.06||7.90||11.46||13.75||83.35|
|Avg Snowfall (in)||52.3||38.8||33.6||10.5||1.10||0.0||0.0||0.0||0.0||1.5||15.1||38.6||191.5|
|Avg Snow Depth (in)||24.0||31.0||32.0||18.0||2.0||0.0||0.0||0.0||0.0||0.0||2.0||10.0||10.0|
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