August weather forecast
Arizona, USA

August in Arizona continues to ride the wave of sweltering summer temperatures, but it is also characterized by increased monsoonal activity, bringing bouts of rain, thunderstorms, and occasionally, flash floods to various parts of the state.

The southern desert regions, including places like Phoenix, remain enveloped in high temperatures during August. Daytimes predominantly showcase temperatures ranging from 100°F (37.8°C) to 110°F (43.3°C). Nights, though slightly cooler, still hover between 75°F (23.9°C) and 85°F (29.4°C). One distinctive feature of August is the heightened monsoonal activity, where sudden thunderstorms can result in rapid downpours. These showers, while providing transient relief from the heat, also raise humidity levels and can lead to flash floods in certain areas.

Flagstaff and the northern highland zones, while warm, offer a more temperate climate compared to the southern counterparts. Daytime temperatures here generally vary from 75°F (23.9°C) to 85°F (29.4°C). Nighttime temperatures offer a refreshing respite with figures between 50°F (10°C) and 60°F (15.6°C). These regions, similar to the south, can witness monsoonal rains, though the intensity and frequency can differ.

When juxtaposed with July, August maintains the high-temperature trend but sees a more pronounced influence of the monsoon season. As Arizona transitions into September, a gradual decrease in temperatures can be expected, especially towards the month's end, marking the onset of the more amiable autumn season.

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• Phoenix - August »
  In Phoenix snow does not fall in January through August, October through December. In Phoenix during August, the rain falls for 7.2 days and regularly aggregates up to 0.59" (15mm) of precipitation.
• Tucson - August »
  On the last day of August, in Tucson, sunrise is at 5:58 am and sunset at 6:49 pm MST. In Tucson, in August, it is raining for 12.3 days, with typically 1.22" (31mm) of accumulated precipitation.
• Mesa - August »
  Continuing the trend of extreme summer heat, August's weather in Mesa, Arizona remains undeterred, maintaining the city's desert reputation. In Mesa during August, the rain falls for 8.8 days and regularly aggregates up to 0.79" (20mm) of precipitation.
• Chandler - August »
  In Chandler, during August, the rain falls for 9.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Chandler in August, during 9.3 rainfall days, 0.94" (24mm) of precipitation is typically accumulated.
• Scottsdale - August »
  In Scottsdale during August, the rain falls for 9.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. In Scottsdale, during August, the rain falls for 9.3 days and regularly aggregates up to 0.94" (24mm) of precipitation.
• Glendale - August »
  The month with the most rainfall in Glendale is August, when the rain falls for 10.1 days and typically aggregates up to 1.18" (30mm) of precipitation. With the arrival of August, Glendale's average high-temperature registers at a still very hot 100.9°F (38.3°C), indicating a subtle variation from the previous month.
• Gilbert - August »
  On the last day of August, in Gilbert, sunrise is at 6:00 am and sunset at 6:54 pm MST. Gilbert greets August with an average high-temperature of a still sweltering 100.9°F (38.3°C), marking a slight deviation from the preceding month.
• Tempe - August »
  In Tempe during August, the rain falls for 9.3 days and regularly aggregates up to 0.94" (24mm) of precipitation. June and August, with an average of 12.1h of sunshine, are months with the most sunshine in Tempe, Arizona.
• Peoria - August »
  In August, in Peoria the rain falls for 10.1 days. August in Peoria begins with an average high-temperature of a still very hot 100.9°F (38.3°C), reflecting close similarity to the preceding month.
• Surprise - August »
  In Surprise, during August, the rain falls for 10.3 days and regularly aggregates up to 1.26" (32mm) of precipitation. As Surprise transitions into August, the average high-temperature stands at a still fiery hot 100.9°F (38.3°C), offering little variation from the preceding month.
• Yuma - August »
  In Yuma in August, during 4.1 rainfall days, 0.28" (7mm) of precipitation is typically accumulated. In Yuma, Arizona, during August, the rain falls for 4.1 days and regularly aggregates up to 0.28" (7mm) of precipitation.