From Judy Hedding,
Your Guide to Phoenix.
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Planning a trip to Phoenix can be tricky. Yes, you can get some great rates at fantastic resorts in the summer--but before you make your reservation, make sure you can enjoy your vacation in the Arizona summer heat. As for the rest of the year, the weather is beautiful! C'mon over!

You will see average temperatures for the Phoenix area published in various places, and they will vary by a degree or two. Keep in mind that the official temperature for Phoenix is monitored at Phoenix Sky Harbor International Airport in downtown Phoenix. Suburbs of Phoenix may have slightly cooler temperatures on average, maybe as much as five degrees.

January
Average high temperature: 66
Average low temperature: 41
Warmest ever: 88
Coldest ever: 17
Average precipitation: .8

February
Average high temperature: 70
Average low temperature: 44
Warmest ever: 92
Coldest ever: 22
Average precipitation: .6

March
Average high temperature: 75
Average low temperature: 49
Warmest ever: 100
Coldest ever: 25
Average precipitation: .9

April
Average high temperature: 84
Average low temperature: 55
Warmest ever: 105
Coldest ever: 32
Average precipitation: .3

May
Average high temperature: 93
Average low temperature: 64
Warmest ever: 113
Coldest ever: 40
Average precipitation: .1

June
Average high temperature: 103
Average low temperature: 72
Warmest ever: 122
Coldest ever: 50
Average precipitation: .1

July
Average high temperature: 105
Average low temperature: 80
Warmest ever: 121
Coldest ever: 61
Average precipitation: .8

August
Average high temperature: 103
Average low temperature: 79
Warmest ever: 116
Coldest ever: 60
Average precipitation: 1.0

September
Average high temperature: 99
Average low temperature: 72
Warmest ever: 118
Coldest ever: 47
Average precipitation: .7

October
Average high temperature: 88
Average low temperature: 61
Warmest ever: 107
Coldest ever: 34
Average precipitation: .6

November
Average high temperature: 75
Average low temperature: 48
Warmest ever: 93
Coldest ever: 25
Average precipitation: .6

December
Average high temperature: 66
Average low temperature: 42
Warmest ever: 88
Coldest ever: 22
Average precipitation: .9