August weather forecast
Duke, MO

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Weather in August

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

Temperature

Duke's average high-temperature in August sits at a still tropical 87.4°F (30.8°C), showing little difference from the previous month. Contrary to the day's heat, an average low-temperature of 65.8°F (18.8°C) is recorded during the nights in August.

Heat index

August's average heat index is calculated to be a torrid 100.4°F (38°C). Undertake additional safety actions, risk of heat cramps and heat exhaustion is significant. Persistent activity may induce heatstroke.
It is emphasized that the heat index's values are meant for shaded zones with mild winds. Heat index values may rise by up to 15 Fahrenheit (8 Celsius) degrees when exposed to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Awareness is key; direct sunlight can enhance the weather's impact, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The body's self-cooling mechanism is rooted in perspiration, where evaporating sweat cools down excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.

Humidity

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

Rainfall

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

In August, the average length of the day 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, sunrise is at 6:38 am and sunset at 7:38 pm CDT.

Sunshine

In August, the average sunshine is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum high UV index of 6 in August translates into the following recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended.

Frequently asked questions

How hot is it in Duke in August?

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

What is the least humid month?

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 is 73%.

How many days does it rain in August?

In Duke, in August, it is raining for 15 days, with typically 2.68" (68mm) of accumulated precipitation.

When it does not snow?

In Duke, 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?

On the first day of August, 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 many hours of sunshine does Duke have in August?

The average sunshine duration in August is 10.3h.

When is the highest UV index?

May 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?

The average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Duke, Missouri, USA

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