Best year time to visit Keystone (historical)

General weather information about Keystone (historical)

Average annual temperature is 16.9 °C

Absolute maximum temperature: 41.3 °C

Absolute minimum temperature: -6.7 °C

Number of sunny days: 201 days

Number of rainy days: 162 days

Number of snow days: 2 days

Look at detailed online map of Keystone (historical)

* Weather data for Keystone (historical) United States is based on climate observations for 2026 year

Keystone (historical) air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)22.123.425.528.032.937.838.041.334.831.927.719.8
Average daytime temperature (°C)12.114.716.921.727.932.134.234.030.823.316.913.2
Average temperature (°C)6.68.510.315.420.925.127.627.623.717.710.77.9
Average night temperature (°C)2.54.05.49.915.118.922.522.517.913.46.14.1
Absolute minimum temperature (°C)-6.7-6.4-5.33.07.114.617.216.112.3-1.3-2.3-3.0

Keystone (historical) monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)10.011.012.013.014.014.014.013.012.011.010.09.0
Daylight mean duration (h)10.010.912.013.114.114.614.313.512.411.310.39.8
Daylight minimum duration (h)9.010.011.012.013.014.014.012.011.010.09.09.0
Sunshine mean duration (h)6.06.87.79.411.012.611.211.110.88.07.76.6
Precipitation (mm)102141195307982906323992843
Sunny days161615201511111521192121
Rainy days1411161016192016912910
Snow days110000000000

Keystone (historical) - weather forecast by months

Keystone (historical) weather in januaryKeystone (historical) weather in februaryKeystone (historical) weather in marchKeystone (historical) weather in aprilKeystone (historical) weather in mayKeystone (historical) weather in juneKeystone (historical) weather in julyKeystone (historical) weather in augustKeystone (historical) weather in septemberKeystone (historical) weather in octoberKeystone (historical) weather in novemberKeystone (historical) weather in december

Best time to visit Keystone (historical):

The best time to visit Keystone (historical) during the most sunny months:

  • June — 12.6(h)

The largest precipitation sum in Keystone (historical) is at

  • February — 141(mm)
  • March — 195(mm)

    • Weather forecast in the closest to Keystone (historical) admin centers

    Weather forecast in the closest towns to Keystone (historical)

    Explore Keystone (historical)

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    Frequently asked questions

    When is the best time to visit Keystone (historical)?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Keystone (historical).
    What is the weather like in Keystone (historical)?
    See average temperature, rainfall and daylight hours for Keystone (historical) by month in the table above.
    How many sunny days does Keystone (historical) have?
    The monthly weather statistics above show sunshine and rainfall patterns for Keystone (historical) throughout the year.