Designation: National Historical Park
Location: Arizona
Tumacácori sits at a cultural crossroads in the Santa Cruz River valley. Here O’odham, Yaqui, and Apache people met and mingled with European Jesuit and Franciscan missionaries, settlers, and soldiers, sometimes in conflict and sometimes in cooperation. Follow the timeworn paths and discover stories that connect us to enduring relationships, vibrant cultures, and traditions of long ago.
Located above the heat of the low desert, Tumacácori National Historical Park is in the mesquite highlands, close to 3,300 feet in elevation, where temperatures are five to ten degrees cooler than Tucson or Phoenix. Visiting the park in this moderate climate is pleasurable during any season of the year but remember to prepare accordingly. Bring layered clothing and drink plenty of water.
Tumacácori National Historical Park is located off of Exit 29 of Interstate 19, forty-five miles (80 kilometers) south of Tucson, Arizona, and eighteen miles (26 kilometers) north of Nogales, Arizona.
The Fiesta de Tumacácori, held annually in December, has over 40 years of history and hundreds of years of heritage.
Credit: NPS Photo
Modern facilities like paved sidewalks and restrooms complement a visit to this site's rich history.
Credit: NPS Photo
Thursday, Aug 20
Sunny
High: 103.8°F | Low: 72.1°F
Humidity: 38%
Wind: 11.6 mph
Rain Chance: 36%
UV Index: 10.8
Sunrise: 05:52 AM
Sunset: 07:02 PM
Moon: First Quarter (58%)
Visibility: 6 mi
Dew Point: 74°F
Cloud Cover: 36%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Friday, Aug 21
Sunny
High: 98°F | Low: 74.1°F
Humidity: 39%
Wind: 18.1 mph
Rain Chance: 36%
UV Index: 11.2
Sunrise: 05:53 AM
Sunset: 07:01 PM
Moon: First Quarter (69%)
Visibility: 6 mi
Dew Point: 70.8°F
Cloud Cover: 36%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Saturday, Aug 22
Sunny
High: 97.3°F | Low: 72.1°F
Humidity: 39%
Wind: 7.8 mph
Rain Chance: 3%
UV Index: 11.3
Sunrise: 05:53 AM
Sunset: 07:00 PM
Moon: Waxing Gibbous (78%)
Visibility: 6 mi
Dew Point: 71.5°F
Cloud Cover: 3%
Pressure: N/A mb
Air Quality (PM2.5): N/A
Ozone: N/A
EPA Index: N/A
Extreme Heat Warning issued August 20 at 12:27AM MST until August 21 at 8:00PM MST by NWS Tucson AZ
Effective: Aug 20, 2026 3:27am
Expires: Aug 20, 2026 8:00pm
* WHAT...Dangerously hot conditions with high temperatures ranging
between 103 to 110 degrees and low temperatures 79 to 85 degrees.
Major HeatRisk is expected.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and
Western Pima County.
* WHEN...Until 8 PM MST Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
Blowing Dust Advisory issued August 19 at 9:51PM MST until August 19 at 10:00PM MST by NWS Tucson AZ
Effective: Aug 20, 2026 12:51am
Expires: Aug 20, 2026 8:00pm
* WHAT...Dangerously hot conditions with high temperatures ranging
between 103 to 110 degrees and low temperatures 79 to 85 degrees.
Major HeatRisk is expected.
* WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, and
Western Pima County.
* WHEN...Until 8 PM MST Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
Extreme Heat Warning issued August 19 at 9:51PM MST until August 21 at 8:00PM MST by NWS Tucson AZ
Effective: Aug 20, 2026 12:51am
Expires: Aug 20, 2026 8:00pm
* WHAT...Dangerously hot conditions with high temperatures ranging
between 103 to 110 degrees and low temperatures 79 to 85 degrees.
Major HeatRisk is expected.
* WHERE...Pinal County, Tohono O'odham Nation, Tucson Metro Area, and
Western Pima County.
* WHEN...Until 8 PM MST Friday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
Extreme Heat Warning issued August 20 at 10:49AM MST until August 22 at 8:00PM MST by NWS Tucson AZ
Effective: Aug 20, 2026 1:49pm
Expires: Aug 21, 2026 8:00am
* WHAT...Dangerously hot conditions with high temperatures ranging
between 103 to 111 degrees and low temperatures 79 to 85 degrees.
Major HeatRisk is expected.
* WHERE...South Central Pinal County, Southeast Pinal County, Tohono
O'odham Nation, Tucson Metro Area, Upper Gila River Valley, and
Western Pima County.
* WHEN...Until 8 PM MST Saturday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
📍 Physical Address:
1895 E Frontage Road
Tumacacori, AZ 85640
🏤 Mailing Address:
P.O. Box 8067
Tumacacori, AZ 85640
📞 Voice Phone: 5203775060
📞 Fax Phone: 5203775079
✉️ Email: NPS_TUMA_Information@nps.gov