Casa Grande Ruins National Monument in August
August at Casa Grande Ruins National Monument averages a daytime high near 105°F and an overnight low around 77°F, with about 1.2" of precipitation. Visitation runs about 0.4× the park's average month, which makes August a very quiet month here.
- Average low
- 77°F
- Average high
- 105°F
Range across the year: 36°F to 107°F
- Precipitation
- 1.2 in
- Daylight
- 13.2 hours
Roughly 3% of the park's yearly visitors come in August: roughly 2,600 recreation visits in a typical year, based on National Park Service monthly counts from 1979 to 2025.
It is the quietest month of the year at Casa Grande Ruins; by contrast March, the busiest, runs about 2.2× the average — so August is the easiest time to have the place largely to yourself.
On our Best Time to Visit score August rates 50/100 ("Fair"). Our recommended month is December: the lightest crowds of the park's good-weather months.
The daily average of about 91°F is hot, with afternoons near 105°F to plan the day around. These figures are 1991–2020 NOAA climate normals from the nearest station, about 0.3 miles from the park.
August falls inside the park's busiest stretch: June, July and August together pull about 12% of the year's visitors, so a visit this month means sharing the park with the peak-season crowd.
You'll have about 13.2 hours of daylight in August to explore — between the 9.8-hour midwinter low and the 14.2-hour summer high.
Park-wide, 2024 drew 104,429 recreation visits, down 6.3% from 111,392 in 2023.
Across the past decade overall visitation has risen about 17.5%, so a August visit is likely to feel busier than it did a few years ago.
How August compares with the months around it
| Month | Avg high / low | Crowds | Best-time score |
|---|---|---|---|
| July | 107°F / 77°F | 0.5× Very quiet | 50 Fair |
| August | 105°F / 77°F | 0.4× Very quiet | 50 Fair |
| September | 101°F / 70°F | 0.5× Quiet | 45 Fair |
All twelve months at Casa Grande Ruins, with the best time to visit.
Frequently Asked Questions
August averages a daytime high near 105°F and an overnight low around 77°F at Casa Grande Ruins National Monument, with about 1.2 inches of precipitation. These are 1991–2020 NOAA climate normals from the nearest station, about 0.3 miles from the park, so conditions inside the park can differ, especially at other elevations.
August is very quiet at Casa Grande Ruins National Monument (about 0.4× the average month). Our best-time score rates it "Fair" at 50/100. Our recommended month is December.
The busiest month is March and the quietest is August. August sits at about 0.4× the park's average, or 3% of annual visitation.
A typical August sees about 3,000 recreation visits at Casa Grande Ruins National Monument, based on National Park Service monthly counts from 1979–2025.
Where to stay near Casa Grande Ruins in August
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Top-rated places to stay near Casa Grande Ruins
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See the full ranking of the best national parks to visit in August.
Source: National Park Service Visitor Use Statistics (1979–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-10-11.