August weather forecast
Duke, MO

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Weather in August

August, the last month of the summer in Duke, is another hot month, with an average temperature ranging between max 87.4°F (30.8°C) and min 65.8°F (18.8°C).

Temperature

Duke's shift into August is marked by a subtle change to a still hot 87.4°F (30.8°C) from July's 89.2°F (31.8°C) in temperature. From the heights of the August heat, Duke records a mean nighttime low of 65.8°F (18.8°C).

Heat index

Throughout August, the heat index is computed to be a sweltering 100.4°F (38°C). Take extra precautions, as heat cramps and heat exhaustion are possible. Sustained activity may result in heatstroke.
The metrics for the heat index are tailored for both shady environments and light winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is an estimation of the warmth sensation when considering humidity levels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Do note, being directly under sun rays can amplify the heat you feel, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. Elevated relative humidity disrupts typical body cooling by reducing the evaporation rate, consequently decreasing the body's cooling rate and enhancing the feeling of heat. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

August through October, with an average relative humidity of 73%, are the least humid months in Duke.

Rainfall

In Duke, Missouri, in August, it is raining for 15 days, with typically 2.68" (68mm) of accumulated precipitation. In Duke, during the entire year, the rain falls for 148.9 days and collects up to 32.4" (823mm) of precipitation.

Snowfall

In Duke, snow does not fall in June through October.

Daylight

The average length of the day in August is 13h and 34min.
On the first day of the month, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of August, in Duke, Missouri, sunrise is at 6:38 am and sunset at 7:38 pm CDT.

Sunshine

The average sunshine in August in Duke is 10.3h.

UV index

The months with the highest UV index in Duke are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Sidestep overexposure. Individuals with fair complexions risk burning in fewer than 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

Is it hot in Duke during August?

In August, in Duke, the average high-temperature is 87.4°F (30.8°C), and the average low-temperature is 65.8°F (18.8°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is computed to be 100.4°F (38°C).

What are the least humid months in Duke?

The months with the lowest humidity are August through October, with an average relative humidity of 73%.

What is the average humidity in August in Duke?

The average relative humidity in August in Duke is 73%.

How many days does it rain in August in Duke?

In Duke, in August, during 15 rainfall days, 2.68" (68mm) of precipitation is typically accumulated.

When it does not snow in Duke?

In Duke, Missouri, snow does not fall in June through October.

How many hours of daylight does Duke have in August?

The average day length in August is 13h and 34min.

When is the sunrise / sunset in August in Duke?

On the first day of August in Duke, sunrise is at 6:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:38 am and sunset at 7:38 pm CDT.

How long on average sun shines in August in Duke?

In August, the average sunshine duration in Duke is 10.3h.

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

The months with the highest UV index in Duke, Missouri, are May through August, with an average maximum UV index of 6.

What is the UV index intensity in August in Duke?

In August, the average daily maximum UV index in Duke, Missouri, is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unprotected exposure to 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
Duke, MO

Average temperature in August - Duke, MO
  • Average high temperature in August: 87.4°F

The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in August: 65.8°F

The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

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Average pressure in August
Duke, MO

Average pressure in August - Duke, MO
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

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Average wind speed in August
Duke, MO

Average wind speed in August - Duke, MO
  • Average wind speed in August: 5.5mph

The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is July (5.4mph).

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Average humidity in August
Duke, MO

Average humidity in August - Duke, MO
  • Average humidity in August: 73%

The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are August, September and October (73%).

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Average rainfall in August
Duke, MO

Average rainfall in August - Duke, MO
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (1.73").

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Average rainfall days in August
Duke, MO

Average rainfall days in August - Duke, MO
  • Average rainfall days in August: 15 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (7 days).

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Average snowfall in August
Duke, MO

Average snowfall in August - Duke, MO
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.43").
The months with the least snowfall are June, July, August, September and October (0").

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Average snowfall days in August
Duke, MO

Average snowfall days in August - Duke, MO
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Duke, MO

Average daylight in August / Average sunshine in August - Duke, MO
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

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Average sunshine days in August
Duke, MO

Average sunshine days in August - Duke, MO
  • Average sunshine days in August: 13.4 days

The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in August
Duke, MO

Average UV index in August - Duke, MO
  • Average UV index in August: 6

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

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Average cloud cover in August
Duke, MO

Average cloud cover in August - Duke, MO
  • Average cloud cover in August: 30

The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is June (Cloud cover 28).

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Average visibility in August
Duke, MO

Average visibility in August - Duke, MO
  • Average visibility in August: 6mi

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

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Duke, Missouri, USA

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