Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The transition into August marks the average high-temperature at a still hot 86.2°F (30.1°C), differing minimally from July's 88°F (31.1°C). Throughout August, Herculaneum encounters an average temperature drop to a comfortable 66.4°F (19.1°C).Heat index
The heat index for August is calculated to be a fiery hot 98.6°F (37°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Note that heat index values are valued for light wind and location in the shade. When exposed to the direct sun, the heat index may augment by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is an aggregate value of air's warmth and moisture to show the human-felt temperature. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are quite important for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. The body is at risk of dehydration and related complications when it fails to shed excessive heat.
Humidity
In Herculaneum, Missouri, the average relative humidity in August is 75%.Rainfall
In Herculaneum, in August, during 14.6 rainfall days, 3.43" (87mm) of precipitation is typically accumulated. Throughout the year, there are 155 rainfall days, and 34.92" (887mm) of precipitation is accumulated.Snowfall
In Herculaneum, Missouri, snow does not fall in April through October.Daylight
The average length of the day in August is 13h and 36min.On the first day of August in Herculaneum, sunrise is at 6:04 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 6:30 am and sunset at 7:32 pm CDT.
Sunshine
In August, the average sunshine in Herculaneum is 10.3h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Herculaneum. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 6 in August interprets into the following advice:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Frequently asked questions
Is it hot in Herculaneum during August?
What is the average humidity in August in Herculaneum?
How much does it rain in Herculaneum in August?
When it does not snow in Herculaneum?
What is the average length of the day in August in Herculaneum?
What time are sunrise and sunset in August in Herculaneum?
How long on average sun shines in August in Herculaneum?
What are the months with the highest UV index in Herculaneum?
How high is the UV index in August in Herculaneum?
Average temperature in August
Herculaneum, MO
- Average high temperature in August: 86.2°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in August: 66.4°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in August
Herculaneum, 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
Herculaneum, MO
- Average wind speed in August: 5.2mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in August
Herculaneum, MO
- Average humidity in August: 75%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Herculaneum, MO
- Average rainfall in August: 3.43"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is February (1.97").
Average rainfall days in August
Herculaneum, MO
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in August
Herculaneum, MO
- Average snowfall in August: 0"
The month with the highest snowfall is January (2.36").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Herculaneum, MO
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Herculaneum, 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 36min).
- Average sunshine in August: 10h and 2min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in August
Herculaneum, MO
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in August
Herculaneum, 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, November and December (UV index 2).
Average cloud cover in August
Herculaneum, MO
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 49).
The months with the least cloud cover are June, July and August (Cloud cover 28).
Average visibility in August
Herculaneum, 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).
Herculaneum, Missouri, USA
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