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Keystone (CO) Climate by Month

The temperature in Keystone can vary quite a bit throughout the year. Temperatures can be pleasant during the warmest months, and very cold during the cooler months. It receives mid-range precipitation levels. Let's now guide you through the climate details for a complete overview.

Average day and night temperature

Visitors to Keystone can expect significant temperature changes throughout the year. Average daytime temperatures range from a pleasant 22°C in July, the warmest time of the year, to a very cold -2°C during cooler months like January. At night, temperatures typically average around -14°C during these months.

The mean minimum and maximum temperatures throughout the year

Precipitation and rainy days

Generally, Keystone experiences moderate precipitation patterns, averaging 506 mm yearly. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, July receives moderate rainfall, averaging 67 mm of precipitation, recorded across 17 rainy days. In contrast, the drier season, June brings less rainfall, with 21 mm over 8 rainy days.

The mean monthly precipitation over the year, including rain, hail and snow

The best time of year to visit Keystone in the United States of America

During the months of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20°C and 26°C.

Other facts from our historical weather data:
  • When is winter in Keystone?
    The coldest season / winter is in the following months: January, February and December.
  • Which is the warmest month in Keystone?
    July has an average maximum temperature of 22°C and is the warmest month of the year.
  • Which is the coldest month in Keystone?
    The coldest month is January with an average maximum temperature of -2°C.
  • Which is the wettest month in Keystone?
    July tops the wettest month list with 67 mm of rainfall.
  • Which is the driest month in Keystone?
    June is the driest month with 21 mm of precipitation.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.

    Forecast for Keystone (CO)

    Sun   Dec 15
    1°C | -12°C
    W 22 km/h
    broken clouds and no rain

    broken clouds and no rain

    Mon   Dec 16
    4°C | -15°C
    W 7 km/h
    almost clear and no rain

    almost clear and no rain

    Tue   Dec 17
    0°C | -10°C
    W 18 km/h
    1 mm
    broken clouds and  chance of slight snow

    broken clouds and chance of slight snow