2025 Compare Cities Climate:
Boulder, CO vs Keystone, SD

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Highlights
- Keystone has 11.0% more rainy days than Boulder.
- Keystone has 9.4% less Sunny Days than Boulder.
- On the BestPlaces comfort index, Keystone scores 5.6% worse than Boulder
 Boulder, COKeystone, SDUnited States
 Rainfall  Unlock2038
 Snowfall71  Unlock28
 Precipitation  Unlock91106
 Sunny245  Unlock205
 Avg. July High  Unlock8186
 Avg. Jan. Low19  Unlock22
 Comfort Index (higher=better)  Unlock6.77
 UV Index5.8  Unlock4.3
 Elevation  Unlock43312443
Reviews for Boulder    55 Reviews

Outside of the university, Boulder had a very distinctive "wealthy hippy" feel. A lot of alternative medicine and a matching ethos. This is changing some among my  More

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We moved here from Texas about 4 years ago and love it here! The amazing sense of community and high regard for the environment are two of the main reasons we love  More

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Over 5 years ago

Most people do much worse than Boulder. I'm the most critical person I've ever met who is never happy or satisfied -- so that's a pretty huge compliment.   More

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Reviews for Keystone    0 Reviews

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