Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
Keystone (CO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Keystone.
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Climate overview of Keystone
Keystone, Colorado, United States of America, sees big temperature differences between seasons, with July peaking at 22°C (72°F) and January dropping to -2°C (28°F).
Keystone sees a moderate amount of rain/snowfall, totalling around 506 mm (20 in) per year. It experiences a distinct dry season from November to February, with pleasant summers and very cold winters, creating some seasonal variation.
Keystone Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Keystone - and find the best time to visit.
Monthly Temperature in Keystone
Visitors to Keystone can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a pleasant 22°C (72°F) in July, the warmest time of the year, to a very cold -2°C (28°F) during cooler months like January.
At night, you can expect temperatures ranging from 6°C (43°F) in July to around -14°C (7°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Keystone
Generally, Keystone experiences moderate precipitation patterns, averaging 506 mm (20 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, July it receives moderate rainfall, averaging 67 mm (2.6 in) of precipitation, recorded across 17 rainy days. In contrast, the driest month June brings less rainfall, with 21 mm (0.8 in) over 8 rainy days. For more details, please visit our Keystone Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Keystone
Conditions in Keystone are generally most comfortable in June, July and August. They are typically least comfortable in January, February, March, April, October, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
very cold
Mar
cold
Apr
cold
May
mixed
Jun
excellent
Jul
excellent
Aug
excellent
Sep
good
Oct
cold
Nov
cold
Dec
very cold
- Best overall: June, July and August
- Warmest weather: July and August
- Fewest rainy days: June
- Seasonal pattern: A distinct dry season from November to February, with pleasant summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Keystone
What is the best time to visit Keystone?
June, July and August typically offer the most optimal weather in Keystone. In contrast, January, February, March, April, October, November and December tend to have less optimal conditions. Keystone has a distinct dry season from November to February, with pleasant summers and very cold winters.
What temperatures can I expect in Keystone?
Daytime highs range from -2°C (28°F) in January to 22°C (72°F) in July. Nighttime lows range from -14°C (7°F) to 6°C (43°F). Temperatures vary considerably through the year.
How much rain does Keystone get?
Annual rainfall is around 506 mm (20 in). July is the wettest month with 67 mm (2.6 in), while June is the driest with 21 mm (0.8 in).
Keystone 3-Day Forecast
Keystone on the map
Keystone is highlighted - select any city to see its climate.
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