Updated October 2026
Tonto National Monument Weather by Month
Tonto National Monument is warmest in July, when the nearest NOAA climate station averages a high of 104°F and a low of 78°F, and coldest in January, with an average high of 61°F and an average low of 40°F. January is the wettest month, with about 2.2 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 0.3 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Tonto National Monument can differ from these, particularly with elevation.
Warmest month
Jul
104°F avg high
Coldest month
Jan
40°F avg low
Wettest month
Jan
2.2 in avg
Longest days
Jun
14.2 h of daylight
Average weather at Tonto by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 61°F | 40°F | 2.2 in | 10.0 h |
| February | 66°F | 43°F | 1.7 in | 10.8 h |
| March | 74°F | 48°F | 1.7 in | 11.7 h |
| April | 82°F | 54°F | 0.6 in | 12.8 h |
| May | 91°F | 63°F | 0.3 in | 13.7 h |
| June | 102°F | 72°F | 0.1 in | 14.2 h |
| July | 104°F | 78°F | 1.6 in | 14.0 h |
| August | 102°F | 77°F | 2.1 in | 13.3 h |
| September | 96°F | 71°F | 1.4 in | 12.2 h |
| October | 85°F | 59°F | 1.0 in | 11.1 h |
| November | 71°F | 48°F | 1.1 in | 10.2 h |
| December | 60°F | 40°F | 2.1 in | 9.8 h |
| Year total | 15.9 in |
NOAA 1991–2020 climate normals from station USC00027281, 0.3 miles from the park's reference point. Snowfall at the station totals about 0.2 inches in an average year. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Tonto is at that time of year.
Tonto weather by season
Winter: December to February
Average highs climb from 60°F in December to 66°F in February, with average lows between 40°F and 43°F. Together the three months average 6 inches of precipitation, about 38% of the yearly total and more than in any other season. Daylight is at its shortest, about 9.8 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 63°F. The average high is 90°F or hotter in May. Together the three months average 2.6 inches of precipitation, about 16% of the yearly total and less than in any other season. Daylight lengthens from about 11.7 hours in March to 13.7 in May.
Summer: June to August
Average highs hold near 103°F in all three months, with average lows between 72°F and 78°F. The average high is 100°F or hotter in all three months. Together the three months average 3.8 inches of precipitation, about 24% of the yearly total. Daylight is at its longest, about 14.2 hours in June.
Fall: September to November
Average highs fall from 96°F in September to 71°F in November, with average lows between 48°F and 71°F. The average high is 90°F or hotter in September. Together the three months average 3.5 inches of precipitation, about 22% of the yearly total. Daylight shortens from about 12.2 hours in September to 10.2 in November.
What the National Park Service says about the weather
Weather during the summer can be extremely hot. It is typically 10 degrees Fahrenheit cooler than Phoenix, AZ. Winter weather may create hazardous conditions on the roads to Tonto National Monument. Severe thunderstorms may lead to a closure of the hiking trails.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Tonto
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 33.65°N, 111.11°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 Tonto National Monument →
Weather and crowds together
July, the warmest month, sees about 0.4× the visitors of the park's average month. March is the busiest month of the year and August the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Tonto National Monument. For hotels, cabins and rentals close to the park, see where to stay near Tonto.
Where to stay near Tonto
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Top-rated places to stay near Tonto
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 Tonto National Monument, with an average high of 104°F and an average low of 78°F. That is the 1991–2020 average at the nearest long-record NOAA station, 0.3 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Tonto National Monument, with an average low of 40°F and an average high of 61°F, based on NOAA 1991–2020 climate normals.
January is the wettest month, with about 2.2 inches of precipitation. June is the driest, at about 0.1 inches. The station records about 15.9 inches of precipitation in an average year.
Rarely, by the station's record. The nearest long-record NOAA station, 0.3 miles from the park's reference point, totals about 0.2 inches of snow in an average year.
Weather at nearby parks
51 mi away · warmest in July (107°F)
78 mi away · warmest in July (101°F)
94 mi away · warmest in July (101°F)
102 mi away · warmest in June (101°F)
107 mi away · warmest in July (86°F)
119 mi away · warmest in July (92°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00027281), 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.