Fort Smith
Arkansas, USA
Long-term weather forecast
Long-term weather forecast

August weather forecast and climate
Fort Smith, AR

The last month of the summer, August, is also a hot month in Fort Smith, Arkansas, with temperature in the range of an average high of 93.4°F (34.1°C) and an average low of 70.9°F (21.6°C).

Temperature

With an average high-temperature of 93.4°F (34.1°C) and an average low-temperature of 70.9°F (21.6°C), August is the warmest month.

Heat index

In August, the average heat index is evaluated at a blazing hot 115.5°F (46.4°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 'feels like', 'felt air temperature', 'real feel', or 'apparent temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity.

Humidity

In Fort Smith, the average relative humidity in August is 68.6%.

Rainfall

The month with the least rainfall in Fort Smith is August when the rain falls for 6.3 days and typically collects 2.6" (65.8mm) of precipitation.

Snowfall

Throughout the year, 4.9" (124.4mm) of snow is accumulated.

Daylight

The average length of the day in August is 13.4h.

Sunshine

The average sunshine in Fort Smith, Arkansas, is 9.5h.

UV index

In August, the average daily maximum UV index in Fort Smith is 9. A UV Index of 8 to 10 symbolizes a very high health risk from the exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 9 transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. 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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim.

What is the warmest month in Fort Smith?

With an average high-temperature of 93.4°F (34.1°C) and an average low-temperature of 70.9°F (21.6°C), August is the warmest month.

What is the temperature in August in Fort Smith?

In August, the average high-temperature is 93.4°F (34.1°C), and the average low-temperature is 70.9°F (21.6°C).

What is the average humidity in August in Fort Smith?

In Fort Smith, the average relative humidity in August is 68.6%.

How much does it rain in Fort Smith in August?

In Fort Smith, during August, the rain falls for 6.3 days and regularly aggregates up to 2.6" (65.8mm) of precipitation.

What is the driest month in Fort Smith?

August is the month with the least rainfall in Fort Smith, Arkansas. Rain falls for 6.3 days and accumulates 2.6" (65.8mm) of precipitation.

What is the average length of the day in August in Fort Smith?

In August, the average length of the day in Fort Smith, Arkansas, is 13.4h.

How long on average sun shines in August in Fort Smith?

In Fort Smith, Arkansas, the average sunshine in August is 9.5h.

What is the UV index reading in August in Fort Smith?

In August, the average daily maximum UV index in Fort Smith is 9. A UV Index reading of 8 to 10 represents a very high hazard to health from unsafe exposure to the Sun's UV rays.
Average temperature in August - Fort Smith, AR
  • Average high temperature in August: 93.4°F

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (49.9°F).

  • Average low temperature in August: 70.8°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (29°F).

Average humidity in August - Fort Smith, AR
  • Average humidity in August: 68.6%

The month with the highest relative humidity is September (71.8%).
The month with the lowest relative humidity is April (63.8%).

Average rainfall in August - Fort Smith, AR
  • Average rainfall in August: 2.6"

The wettest month (with the highest rainfall) is May (5.5").
The driest month (with the lowest rainfall) is August (2.6").

Average rainfall days in August - Fort Smith, AR
  • Average rainfall days in August: 6.3 days

The month with the highest number of rainy days is May (10.7 days).
The month with the lowest number of rainy days is August (6.3 days).

Average snowfall in August - Fort Smith, AR
  • Average snowfall in August: 0"

The month with the highest snowfall is January (2.4").
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in August - Fort Smith, AR
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (1.1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in August / Average sunshine in August - Fort Smith, AR
  • Average daylight in August: 13.4h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in August: 9.5h

The month with most sunshine is July (Average sunshine: 10.6h).
The month with least sunshine is December (Average sunshine: 5h).

Average UV index in August - Fort Smith, AR
  • Average UV index in August: 9

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).