Tucson
Arizona, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Tucson, AZ

Sunset in downtown Tucson, Arizona, with a skyline and a sentinel peak in the distance
Sunset in downtown Tucson, Arizona, with a skyline and a sentinel peak in the distance
The last month of the summer, August, is also a sweltering month in Tucson, Arizona, with average temperature varying between 73.2°F (22.9°C) and 97.3°F (36.3°C).

Temperature

In Tucson, the average high-temperature in August is relatively the same as in July - a still very hot 97.3°F (36.3°C). In August, in Tucson, the average low-temperature is 73.2°F (22.9°C).

Heat index

The average heat index in August is appraised at a scorching 108.3°F (42.4°C). Be wary - heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With the exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'real feel', 'felt air temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. Additional factors like metabolic differences, differences in body mass, height, and shape, wind, and activity influence one's weather impression. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially crucial for babies and toddlers. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. When the relative humidity is high, the evaporation rate is reduced. The warmth is removed from the body at a lower rate, causing the body to retain more heat than it would in dry air. When heat gain exceeds the level the body can remove, body temperature begins to rise, and heat-related illnesses and disorders may develop.

Humidity

In Tucson, the average relative humidity in August is 46.6%.

Rainfall

August is the month with the most rainfall in Tucson. Rain falls for 9.7 days and accumulates 2.4" (60.7mm) of precipitation.

Snowfall

March through November are months without snowfall.

Daylight

In Tucson, the average length of the day is 13.3h.

Sunshine

In Tucson, the average sunshine in August is 10.8h.

UV index

Months with the highest UV index are May through August, with an average maximum UV index of 11. A UV Index of 11, and more, symbolizes an ultimate health vulnerability from unsafe exposure to the UV radiation for average individuals.
Note: The daily maximum UV index of 11 in August interpret into the following advice:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise.

What is the temperature in August in Tucson?

In August, in Tucson, the average high-temperature is 97.3°F (36.3°C), and the average low-temperature is 73.2°F (22.9°C). In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), that combines both air temperature and relative humidity, is calculated to 108.3°F (42.4°C).

What is the average humidity in August in Tucson?

The average relative humidity in August in Tucson, Arizona, is 46.6%.

How much does it rain in Tucson in August?

In August, the rain falls for 9.7 days. Throughout August, 2.4" (60.7mm) of precipitation is accumulated.

What is the rainiest month in Tucson?

The month with the most rainfall in Tucson, Arizona, is August when the rain falls for 9.7 days and typically aggregates up to 2.4" (60.7mm) of precipitation.

When it does not snow in Tucson?

March through November are months without snowfall in Tucson, Arizona.

What is the average length of the day in August in Tucson?

In August, the average length of the day is 13.3h.

How long on average sun shines in August in Tucson?

The average sunshine in August in Tucson is 10.8h.

What are the months with the highest UV index in Tucson?

Months with the highest UV index in Tucson, Arizona, are May through August, with an average maximum UV index of 11.

What is the UV index reading in August in Tucson?

In Tucson, the average daily maximum UV index in August is 11. A UV Index reading of 11, and higher, represents an extreme health vulnerability from the exposure to the Sun's UV radiation.
Average temperature in August - Tucson, AZ
  • Average high temperature in August: 97.4°F

The warmest month (with the highest average high temperature) is June (100.3°F).
The month with the lowest average high temperature is December (64.8°F).

  • Average low temperature in August: 73.3°F

The month with the highest average low temperature is July (74.4°F).
The coldest month (with the lowest average low temperature) is December (39.1°F).

Average humidity in August - Tucson, AZ
  • Average humidity in August: 46.6%

The month with the highest relative humidity is December (50%).
The month with the lowest relative humidity is June (21.1%).

Average rainfall in August - Tucson, AZ
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is August (2.4").
Driest months (with the lowest rainfall) are May and June (0.2").

Average rainfall days in August - Tucson, AZ
  • Average rainfall days in August: 9.7 days

The month with the highest number of rainy days is July (9.8 days).
The month with the lowest number of rainy days is June (1.7 days).

Average snowfall in August - Tucson, AZ
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.3").
Months with the lowest snowfall are March, April, May, June, July, August, September, October and November (0").

Average snowfall days in August - Tucson, AZ
  • Average snowfall days in August: 0 days

Months with the highest number of snowfall days are January and February (0.2 days).
Months with the lowest number of snowfall days are March, April, May, June, July, August, September, October and November (0 days).

Average daylight in August / Average sunshine in August - Tucson, AZ
  • Average daylight in August: 13.3h

The month with the longest days is June (Average daylight: 14.2h).
The month with shortest days is December (Average daylight: 10.1h).

  • Average sunshine in August: 10.8h

The month with most sunshine is June (Average sunshine: 13.2h).
The month with least sunshine is December (Average sunshine: 7.9h).

Average UV index in August - Tucson, AZ
  • Average UV index in August: 11

Months with the highest UV index are May, June, July and August (UV index 11).
The month with the lowest UV index is December (UV index 3).