August weather forecast
Fort Defiance, AZ

Share

Weather in August

The last month of the summer, August, is also a moderately hot month in Fort Defiance, Arizona, with temperature in the range of an average low of 60.8°F (16°C) and an average high of 79.9°F (26.6°C).

Temperature

The onset of August manifests an average high-temperature of a still warm 79.9°F (26.6°C), demonstrating a minor variation from the preceding month. Fort Defiance experiences an average low-temperature reading of 60.8°F (16°C) throughout August.

Humidity

In Fort Defiance, the average relative humidity in August is 41%.

Rainfall

In Fort Defiance, in August, during 15.3 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. In Fort Defiance, during the entire year, the rain falls for 91.1 days and collects up to 12.72" (323mm) of precipitation.

Snowfall

In Fort Defiance, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 28min.
On the first day of August, sunrise is at 6:24 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:44 pm MDT.

Sunshine

In August, the average sunshine is 11.7h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily maximum UV index of 6 in August translates into the following instructions:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. Stay in the shade and limit direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is particularly strong. Remember, however, that shade structures may not provide complete protection. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Updated: Jun 24, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The average high-temperature, in August, in Fort Defiance, is 79.9°F (26.6°C), while the average low-temperature is 60.8°F (16°C). In July, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 80.6°F (27°C).

What is the average humidity in August in Fort Defiance?

In Fort Defiance, Arizona, the average relative humidity in August is 41%.

How much does it rain in August?

In Fort Defiance, in August, it is raining for 15.3 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow?

In Fort Defiance, Arizona, snow does not fall in June through September.

How many hours of daylight does Fort Defiance have in August?

In Fort Defiance, the average day length in August is 13h and 28min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:24 am and sunset at 8:20 pm. On the last day of the month, sunrise is at 6:48 am and sunset at 7:44 pm MDT.

How long on average sun shines in August?

In Fort Defiance, the average sunshine duration in August is 11.7h.

What is the month with the highest UV index?

June through August, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index reading in August?

In August, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Fort Defiance, AZ

Average temperature in August - Fort Defiance, AZ
  • Average high temperature in August: 79.9°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in August: 60.8°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).

Average pressure in August
Fort Defiance, AZ

Average pressure in August - Fort Defiance, AZ
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Fort Defiance, AZ

Average wind speed in August - Fort Defiance, AZ
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in August
Fort Defiance, AZ

Average humidity in August - Fort Defiance, AZ
  • Average humidity in August: 41%

The month with the highest relative humidity is January (71%).
The month with the lowest relative humidity is June (24%).

Average rainfall in August
Fort Defiance, AZ

Average rainfall in August - Fort Defiance, AZ
  • Average rainfall in August: 1.81"

The wettest month (with the highest rainfall) is July (2.76").
The driest month (with the least rainfall) is June (0.39").

Average rainfall days in August
Fort Defiance, AZ

Average rainfall days in August - Fort Defiance, AZ
  • Average rainfall days in August: 15.3 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (3.1 days).

Average snowfall in August
Fort Defiance, AZ

Average snowfall in August - Fort Defiance, AZ
  • Average snowfall in August: 0"

The month with the highest snowfall is December (6.42").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Fort Defiance, AZ

Average snowfall days in August - Fort Defiance, AZ
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is December (9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Fort Defiance, AZ

Average daylight in August / Average sunshine in August - Fort Defiance, AZ
  • Average daylight in August: 13h and 3min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in August: 11h and 4min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The months with the least sunshine are January and December (Average sunshine: 6h and 24min).

Average sunshine days in August
Fort Defiance, AZ

Average sunshine days in August - Fort Defiance, AZ
  • Average sunshine days in August: 11.5 days

The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is July (8.7 days).

Average UV index in August
Fort Defiance, AZ

Average UV index in August - Fort Defiance, AZ
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in August
Fort Defiance, AZ

Average cloud cover in August - Fort Defiance, AZ
  • Average cloud cover in August: 16

The months with the most cloud cover are January and December (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 10).

Average visibility in August
Fort Defiance, AZ

Average visibility in August - Fort Defiance, AZ
  • Average visibility in August: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Fort Defiance, Arizona, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location