Updated October 2026
Arches National Park Weather by Month
Arches National Park is warmest in July, when the nearest NOAA climate station averages a high of 99°F and a low of 70°F, and coldest in January, with an average high of 42°F and an average low of 22°F. October is the wettest month, with about 1.1 inches of precipitation. Snowfall is heaviest in December, at about 3.5 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, 7.5 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Arches National Park can differ from these, particularly with elevation.
Warmest month
Jul
99°F avg high
Coldest month
Jan
22°F avg low
Wettest month
Oct
1.1 in avg
Snowiest month
Dec
3.5 in avg
Longest days
Jun
14.7 h of daylight
Average weather at Arches by month
| Month | Avg high | Avg low | Precipitation | Snowfall | Daylight |
|---|---|---|---|---|---|
| January | 42°F | 22°F | 0.6 in | 2.1 in | 9.6 h |
| February | 50°F | 29°F | 0.6 in | 1.2 in | 10.5 h |
| March | 62°F | 37°F | 0.7 in | 0.5 in | 11.7 h |
| April | 70°F | 44°F | 0.7 in | 0.0 in | 13.0 h |
| May | 80°F | 53°F | 0.8 in | 0.0 in | 14.1 h |
| June | 93°F | 63°F | 0.4 in | 0.0 in | 14.7 h |
| July | 99°F | 70°F | 0.7 in | 0.0 in | 14.5 h |
| August | 96°F | 68°F | 0.9 in | 0.0 in | 13.5 h |
| September | 87°F | 58°F | 0.9 in | 0.0 in | 12.2 h |
| October | 72°F | 44°F | 1.1 in | 0.1 in | 11.0 h |
| November | 56°F | 33°F | 0.6 in | 0.7 in | 9.8 h |
| December | 42°F | 24°F | 0.6 in | 3.5 in | 9.3 h |
| Year total | 8.6 in | 8.1 in |
NOAA 1991–2020 climate normals from station USC00420336, 7.5 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Arches is at that time of year.
Arches weather by season
Winter: December to February
Average highs climb from 42°F in December to 50°F in February, with average lows between 22°F and 29°F. The average low is at or below freezing in all three months. Together the three months average 1.8 inches of precipitation, about 21% of the yearly total and less than in any other season. Snowfall averages about 6.8 inches for the season. Daylight is at its shortest, about 9.3 hours in December.
Spring: March to May
Average highs climb from 62°F in March to 80°F in May, with average lows between 37°F and 53°F. Together the three months average 2.2 inches of precipitation, about 26% of the yearly total. Snowfall averages about 0.5 inches for the season. Daylight lengthens from about 11.7 hours in March to 14.1 in May.
Summer: June to August
Average highs peak at 99°F in July, between 93°F in June and 96°F in August, with average lows between 63°F and 70°F. The average high is 90°F or hotter in all three months. Together the three months average 2 inches of precipitation, about 23% of the yearly total. Daylight is at its longest, about 14.7 hours in June.
Fall: September to November
Average highs fall from 87°F in September to 56°F in November, with average lows between 33°F and 58°F. Together the three months average 2.6 inches of precipitation, about 30% of the yearly total and more than in any other season. Snowfall averages about 0.8 inches for the season. Daylight shortens from about 12.2 hours in September to 9.8 in November.
What the National Park Service says about the weather
Arches is part of the Colorado Plateau, a "high desert" region that experiences wide temperature fluctuations, sometimes over 40 degrees in a single day. The temperate (and most popular) seasons are spring (April-May) and fall (mid-September-October), when daytime highs average 60 to 80 F and lows average 30 to 50 F. Summer temperatures often exceed 100 F, making strenuous exercise difficult. Winters are cold, with highs averaging 30 to 50 F, and lows averaging 0 to 20 F.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Arches
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 38.72°N, 109.59°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 Arches National Park →
Weather and crowds together
July, the warmest month, sees about 1.4× the visitors of the park's average month. June is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Arches National Park. For hotels, cabins and rentals close to the park, see where to stay near Arches.
Where to stay near Arches
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Top-rated places to stay near Arches
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 Arches National Park, with an average high of 99°F and an average low of 70°F. That is the 1991–2020 average at the nearest long-record NOAA station, 7.5 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Arches National Park, with an average low of 22°F and an average high of 42°F, based on NOAA 1991–2020 climate normals.
October is the wettest month, with about 1.1 inches of precipitation. June is the driest, at about 0.4 inches. The station records about 8.6 inches of precipitation in an average year.
Yes. The nearest long-record NOAA station, 7.5 miles from the park's reference point, averages about 8.1 inches of snow a year. December is the snowiest month, at about 3.5 inches. The station averages at least a tenth of an inch of snow in 6 of the 12 months.
Weather at nearby parks
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95 mi away · warmest in July (91°F)
97 mi away · warmest in July (96°F)
101 mi away · warmest in July (82°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00420336), 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.