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Associated Press - July 26, 2009 5:54 PM ET
PHOENIX (AP) - Weather officials have issued an excessive heat warning for the Phoenix metro area and western and southwestern Arizona.
The warning is in effect from 5 p.m. Sunday to 8 p.m. Tuesday, and covers such cities as Yuma, Gila Bend and Wickenburg.
Temperatures are expected to reach 110 to 115 degrees Monday and Tuesday and shouldn't get below the upper 80s at night in many locations.
The higher temperatures are the result of strong high pressure over southern Arizona and the drying out of the moist monsoon air mass that has been in place.
Officials warn people to limit outdoor activities and drink plenty of water.