Tempe, Arizona Weather:
Active Weather Warnings
Monday, May 11, 2026
Hot Day
Day 111°
Night 79°
Precipitation 1 %
Wind 6 mph
UV Index (0 - 11+) 11
Weather Forecast History
Last Year's Weather on This Day (May 11, 2025)
Cloudy Weather

Day

104°

Night

73°

Wind

8 mph

UV Index

11

Precipitation

0 %

Weather Alerts and Warnings for

Severe Future Likely

Extreme Heat Watch

Extreme Heat Watch issued May 7 at 11:33PM MST until May 11 at 8:00PM MST by NWS Phoenix AZ
May 10, 11:00 AM May 11, 9:00 PM
WHAT: Dangerously hot conditions possible. Afternoon temperatures
104 to 110. Major Heat Risk.

WHERE: The Northwest Valley of the Phoenix Metro Area, The East
Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley,
Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise
Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.

WHEN: From Sunday 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.
http://www.maricopa.gov/heat
+ Read More
An Extreme Heat Watch means that a period of very hot temperatures, even by local standards, may occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.
Updated: May 8, 7:31 AM Source: NWS Alert
Severe Expected Likely

Extreme Heat Warning

Extreme Heat Warning issued May 8 at 10:15AM MST until May 11 at 8:00PM MST by NWS Phoenix AZ
May 10, 11:00 AM May 11, 9:00 PM
WHAT: Dangerously hot conditions possible. Afternoon temperatures
104 to 110. Major Heat Risk.

WHERE: The Northwest Valley of the Phoenix Metro Area, The East
Valley of the Phoenix Metro Area, Buckeye/Avondale, Deer Valley,
Central Phoenix, North Phoenix/Glendale, Scottsdale/Paradise
Valley, South Mountain/Ahwatukee, and Southeast Valley/Queen Creek.

WHEN: From 10 AM Sunday to 8 PM MST Monday.

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.
http://www.maricopa.gov/heat
+ Read More
An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. Take extra precautions if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose-fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Public cooling shelters are available in some areas. Consult county officials for more details.
Updated: May 8, 10:38 PM Source: NWS Alert