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Weather in Keystone, CO · National Weather Service + NOAA

Keystone is snow country

Keystone has cold, snowy winters and cool summers, with very little rain. A typical July afternoon reaches 72°, a January night drops to 9°, and about 185 inches of snow falls in a normal winter. A typical November afternoon reaches 39°, and nights fall to 17°.

Winter 32°/10°Spring 47°/23°Summer 69°/41°Fall 51°/26°
Right now
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Sunrise 6:33 am · sunset 5:00 pm

Getting the latest forecast from the National Weather Service…

What stands out about Keystone’s weather

Read from 30 years of NOAA records. Each one opens the full story on the Climate page.

Climate →
Snow countryAbout 185 inches a winter, more than 444 of 464 Colorado towns.Cool summersJuly afternoons average 72°, cooler than 99% of U.S. towns.Snow that staysSnow covers the ground about 179 days a year.A long heating seasonMore heating degree days than 99% of U.S. towns.
A normal year

Where today sits in Keystone’s year

Typical highs and lows month by month, from 30 years of NOAA records.

Full climate →
Winter
32° / 10°
60 days with an inch or more of snow
Spring
47° / 23°
Last frost around Jun 6
Summer
69° / 41°
90° days are rare
Fall now
51° / 26°
First frost around Sep 19
Pastthe usual first frost (Sep 19). Last frost next spring: Jun 6
Best months to be outside
JulAug
Highs of 62–84° and lows of 40° or more
How much snow does Keystone get?About 185 inches a winter.When is it wettest?April, with 2.5 inches.Is it warmer than it used to be?+1.2° vs. the 20th century.

Weather talk

Road reports, first frosts and storm memories from neighbors in Keystone.

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Forecast, conditions and alerts: National Weather Service. Climate: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000. Temperatures and rainfall come from NOAA’s gridded normals for Keystone itself (about a 3-mile square). Snow, frost dates and day counts: the NOAA station at Breckenridge, CO (10 mi, snow) and Cabin Creek, CO (12 mi, frost, heat and degree days). Sunrise and sunset are calculated from the town’s position. Normals are 30-year averages, not a forecast.