Best time to visit Casa Grande Ruins National Monument
November is the best balance at Casa Grande Ruins National Monument: mild and dry for the park (an average high of 78°F), with moderate crowds. March is busiest, with about 18,000 visitors. August is the quietest.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- Casa Grande NM, AZ USC00021314
- Lat / lon
- 32.99, -111.54
- Elevation
- 1,419 ft
- From park center
- 0.3 mi
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Novbest | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 68° | 71° | 78° | 86° | 95° | 105° | 107° | 105° | 101° | 91° | 78° | 67° | 88° |
| Low, °F | 37° | 40° | 45° | 51° | 59° | 68° | 77° | 77° | 70° | 56° | 44° | 36° | 55° |
| Precipitation, in | 1.0 | 1.0 | 0.9 | 0.3 | 0.2 | 0.1 | 1.1 | 1.2 | 0.7 | 0.5 | 0.5 | 0.8 | 8.3 |
| Snow, in | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Daylight, h:mm | 10:11 | 10:57 | 11:53 | 12:57 | 13:50 | 14:19 | 14:08 | 13:22 | 12:20 | 11:18 | 10:25 | 9:59 | |
| Visitors, thousands | 14 | 16 | 18 | 11 | 6 | 5 | 4 | 3 | 4 | 5 | 8 | 8 | 101 |
| Crowds | Busy | Very busy | Very busy | Busy | Moderate | Quiet | Quiet | Quiet | Quiet | Quiet | Moderate | Moderate | |
| Weather | Mild, wet | Mild, wet | Mild, wet | Hot | Very hot | Very hot | Very hot | Very hot | Very hot | Very hot | Mild | Mild, wet |
| Month | High °F | Low °F | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|
| January | 68° | 37° | 1.0 | 0 | 10:11 | 14,000 | Busy | Mild, wet |
| February | 71° | 40° | 1.0 | 0 | 10:57 | 16,000 | Very busy | Mild, wet |
| March | 78° | 45° | 0.9 | 0 | 11:53 | 18,000 | Very busy | Mild, wet |
| April | 86° | 51° | 0.3 | 0 | 12:57 | 11,000 | Busy | Hot |
| May | 95° | 59° | 0.2 | 0 | 13:50 | 6,400 | Moderate | Very hot |
| June | 105° | 68° | 0.1 | 0 | 14:19 | 5,000 | Quiet | Very hot |
| July | 107° | 77° | 1.1 | 0 | 14:08 | 3,800 | Quiet | Very hot |
| August | 105° | 77° | 1.2 | 0 | 13:22 | 3,200 | Quiet | Very hot |
| September | 101° | 70° | 0.7 | 0 | 12:20 | 4,100 | Quiet | Very hot |
| October | 91° | 56° | 0.5 | 0 | 11:18 | 4,500 | Quiet | Very hot |
| Novemberbest | 78° | 44° | 0.5 | 0 | 10:25 | 7,900 | Moderate | Mild |
| December | 67° | 36° | 0.8 | 0 | 9:59 | 8,200 | Moderate | Mild, wet |
| Year | 88° | 55° | 8.3 | 0 | 101,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest July, average high 107°F
- Coldest nights December, average low 36°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 101,000 (2023–2025 average)
- State Arizona
Closures, reservations and alerts: Casa Grande Ruins National Monument on nps.gov
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