August weather forecast
Walnut, IA

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Weather in August

August, the last month of the summer in Walnut, is another warm month, with an average temperature fluctuating between 81.1°F (27.3°C) and 62.2°F (16.8°C).

Temperature

The transition from July to August sees an average high-temperature of a still warm 81.1°F (27.3°C), indicating a minor variance from the prior month. The average low-temperature, in August, in Walnut, Iowa, is an enjoyable 62.2°F (16.8°C).

Heat index

August's mean heat index is appraised at a hot 86°F (30°C). When exposure and activity are sustained, they could induce fatigue, with a chance of heat cramps.
Understand that the heat index values take into account shaded locations and mild winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. One must note that being under the direct sun can escalate the heat's effects, with the heat index possibly rising by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in August in Walnut is 79%.

Rainfall

In August, the rain falls for 13.7 days. Throughout August, 2.8" (71mm) of precipitation is accumulated. Throughout the year, in Walnut, there are 127.7 rainfall days, and 26.57" (675mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Walnut, the average length of the day in August is 13h and 47min.
On the first day of the month, sunrise is at 6:16 am and sunset at 8:37 pm. On the last day of August, in Walnut, sunrise is at 6:46 am and sunset at 7:55 pm CDT.

Sunshine

In Walnut, the average sunshine in August is 9.7h.

UV index

June 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 health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during August leads to these instructions:
Persist with safeguards and heed sun safety doctrines. Keeping sunburn at bay is of prime importance. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the average August temperature in Walnut?

The average high-temperature and low-temperature in Walnut, Iowa, during August are 81.1°F (27.3°C) and 62.2°F (16.8°C) respectively. The average heat index (a.k.a. 'apparent temperature', 'feels like'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 86°F (30°C).

What is the average humidity in August in Walnut?

In August, the average relative humidity is 79%.

How much does it rain in Walnut in August?

In August, the rain falls for 13.7 days. Throughout August, 2.8" (71mm) of precipitation is accumulated.

When it does not snow in Walnut?

June through September are months without snowfall.

How many hours of daylight does Walnut have in August?

In August, the average day length is 13h and 47min.

What time are sunrise and sunset in August in Walnut?

In August, on the first day of the month, sunrise is at 6:16 am and sunset at 8:37 pm. On the last day of the month, in Walnut, sunrise is at 6:46 am and sunset at 7:55 pm CDT.

How long on average sun shines in August in Walnut?

In Walnut, the average sunshine duration in August is 9.7h.

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

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the UV index reading in August in Walnut?

In August, the average daily maximum UV index in Walnut is 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to Sun's UV rays.
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
Walnut, IA

Average temperature in August - Walnut, IA
  • Average high temperature in August: 81.1°F

The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

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Average pressure in August
Walnut, IA

Average pressure in August - Walnut, IA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in August
Walnut, IA

Average wind speed in August - Walnut, IA
  • Average wind speed in August: 7.3mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).

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Average humidity in August
Walnut, IA

Average humidity in August - Walnut, IA
  • Average humidity in August: 79%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).

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Average rainfall in August
Walnut, IA

Average rainfall in August - Walnut, IA
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.87").

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Average rainfall days in August
Walnut, IA

Average rainfall days in August - Walnut, IA
  • Average rainfall days in August: 13.7 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (3.6 days).

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Average snowfall in August
Walnut, IA

Average snowfall in August - Walnut, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Walnut, IA

Average snowfall days in August - Walnut, IA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.8 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
Walnut, IA

Average daylight in August / Average sunshine in August - Walnut, IA
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 9h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in August
Walnut, IA

Average sunshine days in August - Walnut, IA
  • Average sunshine days in August: 14.8 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11 days).

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Average UV index in August
Walnut, IA

Average UV index in August - Walnut, IA
  • Average UV index in August: 6

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

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Average cloud cover in August
Walnut, IA

Average cloud cover in August - Walnut, IA
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in August
Walnut, IA

Average visibility in August - Walnut, IA
  • Average visibility in August: 6mi

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

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Walnut, Iowa, USA

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