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Casa Grande Ruins National Monument

Extreme Heat Watch issued July 21 at 1:24AM MST until July 27 at 8:00PM MST by NWS Phoenix AZ

1:24 AM — 3:00 PM

* WHAT...Dangerously hot conditions possible. Afternoon temperatures 105 to 115. Major Heat Risk. * WHERE...Portions of South-central Arizona. * WHEN...From Thursday morning through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and, without intervention, can lead to heat stroke. * ADDITIONAL DETAILS...In Maricopa County, Call 2-1-1 to find a free cooling center, transportation, water and more.

Casa Grande Ruins National Monument closed for the Christmas holiday

Casa Grande Ruins will be closed Wednesday, December 25th for the Christmas Holiday. The monument closes to the public four days each year, Thanksgiving, Christmas, Juneteenth, and Independence Day. The park will reopen on December 26th.

Casa Grande Ruins Visitor Center to Close Sundays and Mondays through September 22

From July 6 through September 22, 2025, the park visitor center will close each Sunday and Monday, with passport stamps, brochures, and Jr Ranger books available on the visitor center patio. The park itself remains open seven days a week, 9am to 4pm.

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