The high country of Rocky Mountain National Park is noted for extreme weather patterns. Shaped by elevation, slopes, and exposure, these patterns can change rapidly.
Temperatures are often moderate at elevations below 9,400 feet. At higher points like Bear Lake, Trail Ridge Road or Longs Peak. It may even snow in July.
A wide variation between day and nighttime temperatures is also typical of mountain weather. Summer days in Jul and Aug often reach the 70's or 80's and drop into 40's at night.
Based on ten years of precipitation data, Estes Park receives approximately 13.10 inches of moisture every year. Grand Lake receives about 19.95 inches yearly. This precipitation comes in the form of rain or snowfall through the year.
The Continental Divide runs northwest to southeast through the center of the park atop the high peaks. This accounts for two distinct weather patterns, one typical of the east side near Estes Park and the other associated with the Grand Lake area on the park's west side.
Summer: sunny mornings, possible afternoon thunderstorms and cool nights.
Winter: cool conditions to blizzard conditions with extreme temperature variations. Weather conditions change quickly in mountainous areas and snow is possible year round. Wear appropriate dress for each season; comfortable clothing, dress in layers, rain gear, and sunscreen
|Avg High - �F||38.4||40.8||45.0||53.5||62.4||72.7||78.3||76.7||69.9||60.2||46.3||39.7||57.0|
|Avg Low - �F||16.4||17.4||20.7||27.1||34.5||41.2||46.1||44.7||37.7||30.1||22.9||17.7||29.7|
|Avg Precip (in)||0.37||0.45||0.86||1.28||2.02||1.76||2.21||1.86||1.17||0.81||0.60||0.47||13.84|
|Avg Snowfall (in)||4.6||6.3||7.8||3.8||0.5||0.1||0.0||0.0||0.5||1.0||3.8||5.7||34.0|
|Avg Snow Depth (in)||1.0||1.0||1.0||0.0||0.0||0.0||0.0||0.0||0.0||0.0||0.0||1.0||0.0|
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