August weather forecast
Herndon, KS

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Weather in August

The last month of the summer, August, is another hot month in Herndon, Kansas, with temperature in the range of an average low of 66.2°F (19°C) and an average high of 89.1°F (31.7°C).

Temperature

The transition into August marks the average high-temperature at a still hot 89.1°F (31.7°C), differing minimally from July's 91.9°F (33.3°C). A steady average of 66.2°F (19°C) throughout August in Herndon underscores a considerable divergence from the daytime high.

Heat index

The heat index value during August is calculated to be a torrid 95°F (35°C). Incorporate additional safety actions, heat cramps and heat exhaustion are possible. Long-term activity may induce heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Direct sun rays have a notable impact on perceived temperature, which can raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Young ones generally face higher dangers than adults since they sweat less. Along with their large skin surface area compared totheir small bodies and increased heat production from their activities, the risks are heightened.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. In conditions of both high temperature and humidity (a high heat index), sweating is limited and the perception of heat is enhanced. As the body gains more heat than it can dissipate, there's a risk of increasing temperatures and resultant overheating.

Humidity

In August, the average relative humidity is 56%.

Rainfall

In August, in Herndon, the rain falls for 14.1 days. Throughout August, 2.17" (55mm) of precipitation is accumulated. In Herndon, during the entire year, the rain falls for 105.3 days and collects up to 15.79" (401mm) of precipitation.

Snowfall

In Herndon, snow does not fall in June through September.

Daylight

In August, the average length of the day in Herndon is 13h and 41min.
On the first day of August in Herndon, Kansas, sunrise is at 6:42 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 8:15 pm CDT.

Sunshine

In Herndon, the average sunshine in August is 10.4h.

UV index

In Herndon, the average daily maximum UV index in August is 6. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for average individuals.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Deflect overexposure. Sun protection is a necessity. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

How hot is it in Herndon in August?

Herndon in August has an average high-temperature of 89.1°F (31.7°C) and an average low-temperature of 66.2°F (19°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 95°F (35°C).

What is the average humidity in August in Herndon?

In August, the average relative humidity in Herndon is 56%.

How much does it rain in Herndon in August?

In Herndon, in August, during 14.1 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Herndon?

In Herndon, Kansas, snow does not fall in June through September.

What is the average length of the day in August in Herndon?

The average day length in August is 13h and 41min.

When is the sunrise / sunset in August in Herndon?

On the first day of August, sunrise is at 6:42 am and sunset at 8:56 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 8:15 pm CDT.

How long on average sun shines in August in Herndon?

The average sunshine duration in August in Herndon is 10.4h.

What is the UV index intensity in August in Herndon?

In August, the average daily maximum UV index in Herndon 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
Herndon, KS

Average temperature in August - Herndon, KS
  • Average high temperature in August: 89.1°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is December (40.1°F).

  • Average low temperature in August: 66.2°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).

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Average pressure in August
Herndon, KS

Average pressure in August - Herndon, KS
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.82"Hg).

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Average wind speed in August
Herndon, KS

Average wind speed in August - Herndon, KS
  • Average wind speed in August: 9.8mph

The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).

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Average humidity in August
Herndon, KS

Average humidity in August - Herndon, KS
  • Average humidity in August: 56%

The month with the highest relative humidity is January (67%).
The month with the lowest relative humidity is July (52%).

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Average rainfall in August
Herndon, KS

Average rainfall in August - Herndon, KS
  • Average rainfall in August: 2.17"

The wettest month (with the highest rainfall) is May (2.6").
The driest month (with the least rainfall) is January (0.43").

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Average rainfall days in August
Herndon, KS

Average rainfall days in August - Herndon, KS
  • Average rainfall days in August: 14.1 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (2.6 days).

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Average snowfall in August
Herndon, KS

Average snowfall in August - Herndon, KS
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.17").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Herndon, KS

Average snowfall days in August - Herndon, KS
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (6.5 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
Herndon, KS

Average daylight in August / Average sunshine in August - Herndon, KS
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is July (Average sunshine: 11h and 24min).
The months with the least sunshine are January and December (Average sunshine: 6h and 18min).

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Average sunshine days in August
Herndon, KS

Average sunshine days in August - Herndon, KS
  • Average sunshine days in August: 12.9 days

The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is August (12.9 days).

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Average UV index in August
Herndon, KS

Average UV index in August - Herndon, KS
  • Average UV index in August: 6

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Herndon, KS

Average cloud cover in August - Herndon, KS
  • Average cloud cover in August: 21

The month with the most cloud cover is February (Cloud cover 35).
The months with the least cloud cover are June and July (Cloud cover 20).

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Average visibility in August
Herndon, KS

Average visibility in August - Herndon, KS
  • 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).

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Herndon, Kansas, USA

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