Updated October 2026
Saguaro National Park Weather by Month
Saguaro National Park is warmest in June, when the nearest NOAA climate station averages a high of 101°F and a low of 72°F, and coldest in December, with an average high of 65°F and an average low of 41°F.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 2.4 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Saguaro National Park can differ from these, particularly with elevation.
Warmest month
Jun
101°F avg high
Coldest month
Dec
41°F avg low
Longest days
Jun
14.1 h of daylight
Average weather at Saguaro by month
| Month | Avg high | Avg low | Daylight |
|---|---|---|---|
| January | 65°F | 41°F | 10.1 h |
| February | 68°F | 43°F | 10.9 h |
| March | 74°F | 48°F | 11.8 h |
| April | 82°F | 54°F | 12.8 h |
| May | 91°F | 62°F | 13.7 h |
| June | 101°F | 72°F | 14.1 h |
| July | 100°F | 74°F | 13.9 h |
| August | 98°F | 73°F | 13.2 h |
| September | 94°F | 69°F | 12.2 h |
| October | 86°F | 59°F | 11.2 h |
| November | 75°F | 49°F | 10.3 h |
| December | 65°F | 41°F | 9.9 h |
NOAA 1991–2020 climate normals from station USC00027398, 2.4 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Saguaro is at that time of year.
Saguaro weather by season
Winter: December to February
Average highs climb from 65°F in December to 68°F in February, with average lows near 42°F. Daylight is at its shortest, about 9.9 hours in December.
Spring: March to May
Average highs climb from 74°F in March to 91°F in May, with average lows between 48°F and 62°F. The average high is 90°F or hotter in May. Daylight lengthens from about 11.8 hours in March to 13.7 in May.
Summer: June to August
Average highs fall from 101°F in June to 98°F in August, with average lows near 73°F. The average high is 100°F or hotter in June and July. Daylight is at its longest, about 14.1 hours in June.
Fall: September to November
Average highs fall from 94°F in September to 75°F in November, with average lows between 49°F and 69°F. The average high is 90°F or hotter in September. Daylight shortens from about 12.2 hours in September to 10.3 in November.
What the National Park Service says about the weather
Winter Season With daytime temperature from the low 50's to the high 70's Summer Season As we get deeper into the summer season, temperatures will range from mid-90's to low 110's. This is a great time to experience the desert as the day breaks or in the late of the day as the sun disappears behind the surrounding mountain ranges. During the late spring and summer months Saguaro National Park only offers interpretive programs on an intermittent basis.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Saguaro
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 32.21°N, 110.76°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 Saguaro National Park →
Weather and crowds together
June, the warmest month, sees about 0.5× the visitors of the park's average month. March is the busiest month of the year and September the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Saguaro National Park. For hotels, cabins and rentals close to the park, see where to stay near Saguaro.
Where to stay near Saguaro
Picked a month for Saguaro National Park? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Saguaro
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
June is the warmest month at Saguaro National Park, with an average high of 101°F and an average low of 72°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.4 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
December is the coldest month at Saguaro National Park, with an average low of 41°F and an average high of 65°F, based on NOAA 1991–2020 climate normals.
Daylight at Saguaro National Park runs from about 9.9 hours a day in December to about 14.1 hours in June, computed from the park's latitude.
Weather at nearby parks
48 mi away · warmest in June (95°F)
66 mi away · warmest in June (92°F)
71 mi away · warmest in July (107°F)
77 mi away · warmest in June (91°F)
84 mi away · warmest in June (91°F)
102 mi away · warmest in July (104°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00027398), 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.