May weather forecast
Arizona, USA

May signifies the advent of Arizona's transition from the mild spring season to the upcoming intense heat of summer. This month exhibits a noticeable escalation in temperatures throughout the state, laying the foundation for the hot days ahead.

In the southern desert locales, including Phoenix, daytime temperatures predominantly lie between 90°F (32.2°C) and 100°F (37.8°C). The nights, while considerably warmer than the previous month, offer some respite from the heat, with temperatures typically ranging from 65°F (18.3°C) to 75°F (23.9°C). This creates a moderate temperature disparity between the balmy days and relatively cooler nights.

Flagstaff and the northern highland areas, on the other hand, continue to experience a milder climate. Daytime temperatures here oscillate between 65°F (18.3°C) and 75°F (23.9°C). Nighttimes, though warmer than in April, generally maintain a cool ambiance with temperatures around 45°F (7.2°C) to 55°F (12.8°C). The prospect of snowfall in these regions during May is virtually nonexistent, and the landscape becomes increasingly dry.

When compared to April, May embodies the state's gradual immersion into the scorching summer climate, especially evident in the southern regions. As Arizona steps into June, anticipate an even more substantial surge in temperatures, especially in the south, marking the onset of the state's notoriously sweltering summer season.

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• Phoenix - May »
  The months with the least rainfall in Phoenix are May and June Rain falls for 1.3 days and accumulates 0.08" (2mm) of rain. The months with the least rainfall in Phoenix are May and June Rain falls for 1.3 days and accumulates 0.08" (2mm) of rain.
• Tucson - May »
  The month with the least rainfall in Tucson is May, when the rain falls for 1.3 days and typically collects 0.08" (2mm) of precipitation. On the last day of the month, in Tucson sunrise is at 5:17 am and sunset at 7:25 pm MST.
• Mesa - May »
  In Mesa during May, the rain falls for 2.3 days and regularly aggregates up to 0.12" (3mm) of precipitation. May's weather in Mesa, Arizona marks the swift transition from the gentle springtime to the characteristic harsh desert summer.
• Chandler - May »
  In Chandler, during the entire year, the rain falls for 60.4 days and collects up to 8.15" (207mm) of precipitation. On the first day of May in Chandler, sunrise is at 5:38 am and sunset at 7:10 pm.
• Scottsdale - May »
  On the last day of the month, in Scottsdale, Arizona, sunrise is at 5:18 am and sunset at 7:32 pm MST. Throughout the year, in Scottsdale, there are 57.7 rainfall days, and 7.72" (196mm) of precipitation is accumulated.
• Glendale - May »
  On the last day of the month, in Glendale, sunrise is at 5:19 am and sunset at 7:33 pm MST. On the first day of May in Glendale, sunrise is at 5:39 am and sunset at 7:12 pm.
• Gilbert - May »
  On the first day of May in Gilbert sunrise is at 5:38 am and sunset at 7:10 pm. May ushers in a preliminary phase of summer in Gilbert with a considerable daily sunshine amounting to a staggering 11.9 hours.
• Tempe - May »
  In Tempe in May, it is raining for 1.8 days, with typically 0.12" (3mm) of accumulated precipitation. May through August, with an average maximum UV index of 8, are months with the highest UV index in Tempe, Arizona.
• Peoria - May »
  On the last day of the month, in Peoria, sunrise is at 5:19 am and sunset at 7:33 pm MST. Throughout the year, in Peoria, there are 59.7 rainfall days, and 8.23" (209mm) of precipitation is accumulated.
• Surprise - May »
  On the last day of the month, in Surprise, sunrise is at 5:20 am and sunset at 7:34 pm MST. In Surprise, during the entire year, the rain falls for 60.7 days and collects up to 8.62" (219mm) of precipitation.
• Yuma - May »
  The months with the least rainfall in Yuma are May and June Rain falls for 0.8 days and accumulates 0.04" (1mm) of rain. On the last day of the month, in Yuma, sunrise is at 5:31 am and sunset at 7:41 pm MST.