Arizona, 2025

Heat in Arizona, September 20 to 23, 2025

September 20 to 23, 2025 · NWS TWC · 2 events in 1 county or zone

Temperatures in Southeastern Arizona were near normal with Low HeatRisk. The Pima County Medical Examiner found that heat was a factor in the cause of death for 2 individuals.

Where it happened

Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
2
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
2

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS TWC wrote it up.

Temperatures in Southeastern Arizona were near normal with Low HeatRisk. The Pima County Medical Examiner found that heat was a factor in the cause of death for 2 individuals. Heat was the primary factor for both individuals.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tucson, AZ wrote its last area forecast discussion before the first event at Sep 20, 8:17 AM MST, 1 hour 43 minutes earlier.

Area forecast discussion, Sep 20, 8:17 AM MST, 1 hour 43 minutes before
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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

2 heat. Local standard time, as filed.

Heat, Tucson Metro Area

When
September 20, 10:00 AM MST to 8:00 PM MST
Where
Tucson Metro Area forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
32.097, -111.790 (the zone’s center; the record gives no point)

High temperatures in Southeastern Arizona were near normal, causing Low HeatRisk. The Tucson International Airport reached a high temperature of 92 degrees Fahrenheit. The Pima County Medical Examiner found that heat was the primary factor in the cause of death for an individual in Vail.

Heat, Tucson Metro Area

When
September 23, 10:00 AM MST to 8:00 PM MST
Where
Tucson Metro Area forecast zone
Deaths
1 direct, 0 indirect
Reported by
County Official
Coordinates
32.097, -111.790 (the zone’s center; the record gives no point)

High temperatures in Southeastern Arizona were 3 degrees above normal, causing Low HeatRisk. The Tucson International Airport reached a high temperature of 96 degrees Fahrenheit. The Pima County Medical Examiner found that heat was the primary factor in the cause of death for an individual in Tucson.

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

EventDateAgeSexWhereKind
Heat, Tucson Metro Area2025-09-2072MaleOutside/Open AreasDirect
Heat, Tucson Metro Area2025-09-2363MalePermanent HomeDirect

What these are

Heat
Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Arizona in 2025Every state in 2025This day in weather historyWarnings in Arizona, September 2025

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-30. Each event’s entry at NCEI: 1293517, 1293518.