Arizona, 2020Excessive Heat in Arizona, May 6 to 7, 2020
May 6 to 7, 2020 · NWS TWC · 8 events in 8 counties and zones
Very hot temperatures were experienced in parts of southeast Arizona on May 6th and 7th with high temperatures exceeding established records in many locations. No heat related fatalities were reported.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 8
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.
Very hot temperatures were experienced in parts of southeast Arizona on May 6th and 7th with high temperatures exceeding established records in many locations. No heat related fatalities were reported.
Excessive Heat, Western Pima County
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Western Pima County forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.097, -111.790 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Tohono O Odham Nation
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Tohono O Odham Nation forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.501, -111.567 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Upper Santa Cruz River and Altar Valleys
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Upper Santa Cruz River and Altar Valleys forecast zone
- Reported by
- Mesonet
- Coordinates
- 31.812, -111.318 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Tucson Metro Area
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Tucson Metro Area forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.097, -111.790 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, South Central Pinal County
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- South Central Pinal County forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.904, -111.345 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Southeast Pinal County
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Southeast Pinal County forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.904, -111.345 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Upper San Pedro River Valley
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Upper San Pedro River Valley forecast zone
- Reported by
- Mesonet
- Coordinates
- 32.109, -110.569 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
Excessive Heat, Upper Gila River and Aravaipa Valleys
- When
- May 6, 10:00 AM MST to May 7, 8:00 PM MST
- Where
- Upper Gila River and Aravaipa Valleys forecast zone
- Reported by
- Mesonet
- Coordinates
- 33.074, -109.563 (the zone’s center; the record gives no point)
Very hot spring temperatures 12 to 17 degrees above normal occurred in parts of southeast Arizona, causing the High Heat Risk category to be reached. Several daily high temperature records were tied or broken. On May 6th record highs included 107 degrees at Organ Pipe Cactus National Monument, 106 at Tucson International Airport, 104 at Ajo (tie) and Sells, 103 at Safford Ag Center, 102 at Sasabe and Benson, 100 at Nogales Airport and 98 at San Manuel. On May 7th record highs included 108 degrees at Ajo, 104 at Green Valley, 102 at Safford Airport, 101 at Sasabe, 98 at Nogales Airport and 97 at San Manuel. Organ Pipe Cactus National Monument (107) and Picacho (105) were both shy of a record on May 7th by one degree.
- Excessive Heat
- Heat at or above the local excessive heat warning criteria, or heat that caused deaths.
After NWS Directive 10-1605, the rules offices file Storm Data by.
- Wildfire in Wisconsin, May 6, 20201 death · $3,000 · 1 event
- Dust Storm and Strong Wind in Washington, May 6, 2020$16,000 · 2 events
- High Wind in Wyoming, May 6 to 7, 202059 kt wind · 8 events
- Excessive Heat in California, May 6 to 7, 20206 events
- High Wind in Idaho, May 6 to 11, 202064 kt wind · 6 events
- Drought in Colorado, May 6 to 31, 20204 events
- High Wind in Montana, May 6 to 7, 202056 kt wind · 4 events
- High Wind in Montana, May 6, 202052 kt wind · 3 events
- Frost and Freeze in West Virginia, May 6 to 7, 20203 events
- Frost and Freeze in Virginia, May 6 to 7, 20202 events
- Frost and Freeze in Colorado, May 6, 20201 event
- Dust Storm in Idaho, May 6, 20201 event
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 2026-09-24. Each event’s entry at NCEI: 895831, 895862, 895863, 895864, 895865, 895866, 895867, 895868.