What’s the climate like in Keystone?
The current climate of Keystone features average monthly temperatures ranging from highs of 18°C during the day to lows of -4°C. The average yearly temperature is around 6°C. At night, temperatures in the colder months average around -12°C and in the warmer months around 8°C.
The highest temperature recorded in Keystone in recent years was 26°C in June 2016. The lowest daytime temperature recorded was -21°C in December 2022.
On average, Keystone gets 277 mm of precipitation each year. Of this, about 417 cm is snowfall. For comparison, London gets 701 mm of precipitation each year.
Best time to visit Keystone?
The best time to visit Keystone for pleasant to warm weather is June through August. There might be some rain during this period, but the temperatures are just right for exploring Keystone.
Climate Table of Keystone
The climate table of Keystone shows the average temperatures, precipitation, snow, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | -4 | -4 | -1 | 2 | 7 | 15 | 18 | 16 | 14 | 7 | 1 | -4 |
| Temp. min (°C) | -12 | -10 | -8 | -5 | 0 | 6 | 9 | 8 | 5 | -2 | -6 | -11 |
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| Precipitation (mm) | 11 | 11 | 14 | 28 | 36 | 30 | 40 | 44 | 18 | 21 | 13 | 11 |
| Snow (cm) | 62 | 55 | 50 | 93 | 28 | 1,3 | 0 | 0 | 1,3 | 32 | 32 | 63 |
| UV Index | 5 | 6 | 6 | 7 | 8 | 8 | 7 | 7 | 8 | 7 | 5 | 4 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 6°C
- Highest temperature: 18°C in July
- Lowest temperature: -4°C in January, February and December
- Precipitation*: 277 mm per year, averaging 23 mm per month
- Snowfall: 417 cm per year
- Driest months: 11 mm in January, February and December
- Wettest months: 44 mm in August, 40 mm in July and 36 mm in May
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Keystone
This graph shows the average maximum temperatures per month in Keystone, Colorado. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Keystone
This graph shows how much precipitation Keystone, Colorado, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average Snowfall per Month in Keystone
This graph shows how much snow Keystone, Colorado, gets on average per month. The amount of snowfall is measured in centimetres and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Keystone
This graph shows the average UV index per month in Keystone, Colorado. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Keystone
This graph shows the average yearly temperature in Keystone, Colorado. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Keystone
This chart shows the total yearly precipitation in Keystone, Colorado, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Keystone
This chart shows the total yearly snowfall in Keystone, Colorado, over the past few years. The total yearly snowfall, measured in centimetres, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences in Keystone
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Average Weather in Keystone by Month
Click on a month below to see detailed weather info for Keystone. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
