Keystone (CO) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Keystone.
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, 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
The weather does bring rainfall during this period, between 21 mm (0.8 in) and 67 mm (2.6 in). Seeking the perfect travel destination for this year? We've created a tool that suggests locations matching your desired weather. Let our weather planner guide your travel decisions.
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.
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 (CO) 3-Day Forecast
Keystone on the map
Keystone is highlighted — select any city to see its climate.
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