Annual mean
Annual mean of daily highs
Annual mean of daily lows
Keystone town, Colorado
Official LSAD Designation: Keystone town • Census GEOID: 0840550
• Summit County
Climate Normals & Weather Observations
30-year climate normals (1991–2020) and weather observations for Keystone town.
Reference Weather Station: DILLON 1 E, CO US (ID: USC00052281)
• Located 5.6 miles from community center
• Elevation: 2,763.0 m
| Month | Average High (°F) | Average Low (°F) | Mean Temp (°F) | Precipitation (in) |
|---|---|---|---|---|
| January | 31.1° | 1.5° | 16.3° | 0.95" |
| February | 33.4° | 3.6° | 18.5° | 0.99" |
| March | 40.5° | 10.5° | 25.5° | 1.15" |
| April | 47.5° | 18.1° | 32.8° | 1.42" |
| May | 57.6° | 25.9° | 41.8° | 1.34" |
| June | 69.1° | 32.6° | 50.8° | 1.13" |
| July | 75.0° | 38.1° | 56.6° | 1.87" |
| August | 72.5° | 36.9° | 54.7° | 1.91" |
| September | 66.2° | 29.7° | 47.9° | 1.40" |
| October | 54.1° | 20.7° | 37.4° | 0.98" |
| November | 41.1° | 11.4° | 26.2° | 0.88" |
| December | 31.7° | 3.0° | 17.3° | 0.87" |
Annual Temperature History
2010–2025, completed calendar years only.
NOAA station DILLON 1 E, CO US (ID: USC00052281) • 5.6 miles from community center .
This is the same reference station used for monthly normals.
Source: NOAA NCEI Global Summary of the Year.
Annual temperature data table (°F)
| Year | Annual mean (°F) | Annual mean of daily highs (°F) | Annual mean of daily lows (°F) |
|---|---|---|---|
| 2010 | 35.5 | 51.7 | 19.3 |
| 2011 | Unavailable | Unavailable | Unavailable |
| 2012 | 37.9 | 55.0 | 20.8 |
| 2013 | 34.5 | 50.1 | 19.0 |
| 2014 | 35.8 | 50.7 | 20.8 |
| 2015 | 37.1 | 52.7 | 21.6 |
| 2016 | 36.6 | 52.5 | 20.6 |
| 2017 | 37.6 | 53.1 | 22.2 |
| 2018 | 36.6 | 53.0 | 20.2 |
| 2019 | 35.0 | 50.7 | 19.4 |
| 2020 | 36.3 | 52.9 | 19.7 |
| 2021 | 37.3 | 52.9 | 21.6 |
| 2022 | 35.0 | 50.8 | 19.3 |
| 2023 | 35.5 | 51.4 | 19.6 |
| 2024 | 37.4 | 53.3 | 21.4 |
| 2025 | 38.3 | 54.5 | 22.2 |
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.