PHOENIX - After record breaking heat on Sunday that was connected to at least four deaths, the Valley is looking at scorching temperatures again on Monday.

Phoenix hit 116 just after 3 p.m., surpassing the previous high of 115 for June 20, which was set in 1968..

Monday also marks the official start of summer and the longest day of the year -- 14 hours and 22 minutes.

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An excessive heat warning is in place for five Arizona counties through Wednesday afternoon, including Coconino, Gila, Maricopa, Pinal and Yavapai.

Sunday was another record-setting day for heat. The National Weather Service recorded a high of 118, breaking the previous record of 115. Sunday's high also was the fifth highest temperature ever recorded for the area.

At least four people died over the weekend while taking part in outdoor activities and at least one person had already required medical response for heat-related disorientation on Monday morning.

The Phoenix Fire Department advised everyone to stay indoors and off the trails.

The fire department reported that they responded to around 100 heat-related calls over the weekend.

In addition, a number of cooling centers and hydration stations are available for those in need.

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Important things to do in severe heat:

- Take breaks from the sun by finding air-conditioned areas

- Wear a wide-brimmed hat, sunscreen and light clothing

- Be careful not to leave a pet or child in your car (and don't walk your pet on the hot sidewalk)

Remember to check in with family, friends and neighbors to help each other out -- some people are more susceptible to being affected by high temps.

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