Updated October 2026
Colorado National Monument Weather by Month
Colorado National Monument is warmest in July, when the nearest NOAA climate station averages a high of 93°F and a low of 65°F, and coldest in January, with an average high of 39°F and an average low of 21°F. September and October are the wettest months, with about 1.3 inches of precipitation each. Snowfall is heaviest in January, at about 6.2 inches.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 4.2 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Colorado National Monument can differ from these, particularly with elevation.
Warmest month
Jul
93°F avg high
Coldest month
Jan
21°F avg low
Snowiest month
Jan
6.2 in avg
Longest days
Jun
14.7 h of daylight
Average weather at Colorado by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 39°F | 21°F | 0.8 in | 6.2 in | 9.5 h |
| February | 45°F | 25°F | 0.6 in | 3.9 in | 10.5 h |
| March | 56°F | 34°F | 0.9 in | 2.1 in | 11.7 h |
| April | 63°F | 39°F | 1.1 in | 0.7 in | 13.0 h |
| May | 74°F | 49°F | 1.2 in | 0.1 in | 14.1 h |
| June | 87°F | 59°F | 0.7 in | 0.0 in | 14.7 h |
| July | 93°F | 65°F | 0.8 in | 0.0 in | 14.5 h |
| August | 90°F | 62°F | 1.0 in | 0.0 in | 13.5 h |
| September | 80°F | 54°F | 1.3 in | 0.0 in | 12.2 h |
| October | 66°F | 41°F | 1.3 in | 0.6 in | 10.9 h |
| November | 51°F | 31°F | 0.8 in | 2.8 in | 9.8 h |
| December | 39°F | 22°F | 0.8 in | 5.4 in | 9.3 h |
| Year total | 11.3 in | 21.8 in |
NOAA 1991–2020 climate normals from station USC00051772, 4.2 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Colorado is at that time of year.
Colorado weather by season
Winter: December to February
Average highs climb from 39°F in December to 45°F in February, with average lows between 21°F and 25°F. The average low is at or below freezing in all three months. Together the three months average 2.2 inches of precipitation, about 19% of the yearly total and less than in any other season. Snowfall averages about 16 inches for the season. Daylight is at its shortest, about 9.3 hours in December.
Spring: March to May
Average highs climb from 56°F in March to 74°F in May, with average lows between 34°F and 49°F. Together the three months average 3.2 inches of precipitation, about 28% of the yearly total. Snowfall averages about 2.9 inches for the season, most of it in March. Daylight lengthens from about 11.7 hours in March to 14.1 in May.
Summer: June to August
Average highs peak at 93°F in July, between 87°F in June and 90°F in August, with average lows between 59°F and 65°F. The average high is 90°F or hotter in July and August. Together the three months average 2.5 inches of precipitation, about 22% of the yearly total. Daylight is at its longest, about 14.7 hours in June.
Fall: September to November
Average highs fall from 80°F in September to 51°F in November, with average lows between 31°F and 54°F. The average low is at or below freezing in November. Together the three months average 3.4 inches of precipitation, about 30% of the yearly total and more than in any other season. Snowfall averages about 3.4 inches for the season, most of it in November. Daylight shortens from about 12.2 hours in September to 9.8 in November.
What the National Park Service says about the weather
Spring: Daytime high temperatures 70-85 F (21-30 C), nighttime low temperature 30-50 F (-1 - +10 C). Summer: Daytime high temperatures can reach 100 F (38 C), afternoon thunderstorms common. Fall: Similar to spring temperatures, sudden changes in weather common. Snow can occur in October. Winter: Daytime highs vary from 10 - 45 F (-12 - +7 C). Snow common, patches of snow and ice stay around most of the winter.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Colorado
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 39.05°N, 108.69°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Colorado National Monument →
Weather and crowds together
July, the warmest month, sees about 1.3× the visitors of the park's average month. May is the busiest month of the year and February the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Colorado National Monument. For hotels, cabins and rentals close to the park, see where to stay near Colorado.
Where to stay near Colorado
Picked a month for Colorado National Monument? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Colorado
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
July is the warmest month at Colorado National Monument, with an average high of 93°F and an average low of 65°F. That is the 1991–2020 average at the nearest long-record NOAA station, 4.2 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Colorado National Monument, with an average low of 21°F and an average high of 39°F, based on NOAA 1991–2020 climate normals.
September and October are the wettest months, with about 1.3 inches of precipitation each. February is the driest, at about 0.6 inches. The station records about 11.3 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 4.2 miles from the park's reference point, averages about 22 inches of snow a year. January is the snowiest month, at about 6.2 inches. The station averages at least a tenth of an inch of snow in 8 of the 12 months.
Weather at nearby parks
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101 mi away · warmest in July (91°F)
116 mi away · warmest in July (96°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00051772), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.