August weather forecast
Robertsville, MO

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Weather in August

August, the last month of the summer in Robertsville, is another tropical month, with an average temperature ranging between min 66.7°F (19.3°C) and max 86.5°F (30.3°C).

Temperature

Robertsville's shift into August sets the average high-temperature at a still hot 86.5°F (30.3°C), a figure that deviates only slightly from July's 88.2°F (31.2°C). August brings with it a nighttime average temperature of 66.7°F (19.3°C) in Robertsville.

Heat index

The heat index for August is appraised at a very hot 98.6°F (37°C). Ensure extra safety measures, heat exhaustion and heat cramps are likely. Continuous activity might result in heatstroke.
Remember that heat index calculations are made for conditions in the shade with light wind. 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 'felt air temperature' or 'real feel', is an indicator that blends the effects of temperature and humidity to depict perceived warmth. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely vital to babies and toddlers. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Overheating can ensue when the body accumulates more heat than it can release, and dehydration severity may vary.

Humidity

The average relative humidity in August is 74%.

Rainfall

In Robertsville, during August, the rain falls for 14.3 days and regularly aggregates up to 3.23" (82mm) of precipitation. In Robertsville, during the entire year, the rain falls for 138.9 days and collects up to 28.54" (725mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in August is 13h and 37min.
On the first day of August, sunrise is at 6:06 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:34 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum UV index of 6 during August translates into these guidelines:
Guard against overexposure. Protection from sun-induced harm is essential. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it hot in Robertsville during August?

In Robertsville, in August, the average high-temperature is 86.5°F (30.3°C), and the average low-temperature is 66.7°F (19.3°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, in August is appraised at 98.6°F (37°C).

What is the average humidity in August in Robertsville?

The average relative humidity in August in Robertsville, Missouri, is 74%.

How many days does it rain in August in Robertsville?

In Robertsville, Missouri, during August, the rain falls for 14.3 days and regularly aggregates up to 3.23" (82mm) of precipitation.

When it does not snow in Robertsville?

In Robertsville, Missouri, snow does not fall in April through October.

How many hours of daylight does Robertsville have in August?

The average day length in August in Robertsville is 13h and 37min.

When are sunrise and sunset in August in Robertsville?

On the first day of August in Robertsville, Missouri, sunrise is at 6:06 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:34 pm CDT.

How long on average sun shines in August in Robertsville?

In August, the average sunshine duration is 10.1h.

What is the month with the highest UV index in Robertsville?

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

What is the UV index intensity in August in Robertsville?

In August, the average daily maximum UV index in Robertsville is 6. A UV Index reading of 6 to 7 represents a high health vulnerability 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
Robertsville, MO

Average temperature in August - Robertsville, MO
  • Average high temperature in August: 86.5°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in August: 66.7°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).

Average pressure in August
Robertsville, MO

Average pressure in August - Robertsville, MO
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in August
Robertsville, MO

Average wind speed in August - Robertsville, MO
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).

Average humidity in August
Robertsville, MO

Average humidity in August - Robertsville, MO
  • Average humidity in August: 74%

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Robertsville, MO

Average rainfall in August - Robertsville, MO
  • Average rainfall in August: 3.23"

The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days in August
Robertsville, MO

Average rainfall days in August - Robertsville, MO
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in August
Robertsville, MO

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

The month with the highest snowfall is February (1.46").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in August
Robertsville, MO

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

The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

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

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

  • Average sunshine in August: 10h and 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in August
Robertsville, MO

Average sunshine days in August - Robertsville, MO
  • Average sunshine days in August: 15.3 days

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is May (12.5 days).

Average UV index in August
Robertsville, MO

Average UV index in August - Robertsville, 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
Robertsville, MO

Average cloud cover in August - Robertsville, MO
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in August
Robertsville, MO

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

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

Robertsville, Missouri, USA

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