August weather forecast
Diagonal, IA

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Weather in August

August, the last month of the summer in Diagonal, is another warm month, with an average temperature fluctuating between 63.3°F (17.4°C) and 81.7°F (27.6°C).

Temperature

The commencement of August introduces an average high-temperature of a still moderately hot 81.7°F (27.6°C), closely mirroring the preceding month. Diagonal, during August nights, observes an average temperature of 63.3°F (17.4°C).

Heat index

For August, the heat index is computed to be a tropical 87.8°F (31°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. 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 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Consider the sun's direct rays and their impact; they can potentially increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Children frequently do not comprehend the need for rest and hydration. Thirst is an advanced stage of dehydration - staying hydrated, especially during extended physical exercises, is essential.

Humidity

In Diagonal, the average relative humidity in August is 79%.

Rainfall

In Diagonal, in August, it is raining for 13.3 days, with typically 2.32" (59mm) of accumulated precipitation. Throughout the year, in Diagonal, Iowa, there are 126.9 rainfall days, and 22.6" (574mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Diagonal, the average length of the day in August is 13h and 45min.
On the first day of August, sunrise is at 6:14 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:50 pm CDT.

Sunshine

In August, the average sunshine in Diagonal is 9.9h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 6 in August translates into this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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Frequently asked questions

What is the usual temperature for Diagonal in August?

An average high-temperature, in August, in Diagonal, is 81.7°F (27.6°C) and the average low-temperature is 63.3°F (17.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 87.8°F (31°C).

What is the average humidity in August in Diagonal?

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

How much does it rain in Diagonal in August?

In Diagonal, during August, the rain falls for 13.3 days and regularly aggregates up to 2.32" (59mm) of precipitation.

When it does not snow in Diagonal?

June through September are months without snowfall.

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

In Diagonal, Iowa, the average day length in August is 13h and 45min.

When is the sunrise / sunset in August in Diagonal?

In August, on the first day of the month, sunrise is at 6:14 am and sunset at 8:32 pm. On the last day of the month, in Diagonal, Iowa, sunrise is at 6:44 am and sunset at 7:50 pm CDT.

How long on average sun shines in August in Diagonal?

In Diagonal, the average sunshine duration in August is 9.9h.

When is the highest UV index in Diagonal?

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

What is the UV index reading in August in Diagonal?

In August, the average daily maximum UV index in Diagonal, Iowa, is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Diagonal, IA

Average temperature in August - Diagonal, IA
  • Average high temperature in August: 81.7°F

The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 63.3°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).

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Average pressure in August
Diagonal, IA

Average pressure in August - Diagonal, 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 (29.88"Hg).

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Average wind speed in August
Diagonal, IA

Average wind speed in August - Diagonal, IA
  • Average wind speed in August: 6.8mph

The windiest months (with the highest average wind speed) are January, February and March (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

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Average humidity in August
Diagonal, IA

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

The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Diagonal, IA

Average rainfall in August - Diagonal, IA
  • Average rainfall in August: 2.32"

The wettest month (with the highest rainfall) is June (3.86").
The driest months (with the least rainfall) are February and December (0.71").

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Average rainfall days in August
Diagonal, IA

Average rainfall days in August - Diagonal, IA
  • Average rainfall days in August: 13.3 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.1 days).

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Average snowfall in August
Diagonal, IA

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

The month with the highest snowfall is January (3.54").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Diagonal, IA

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

The month with the highest number of snowfall days is January (8.4 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
Diagonal, IA

Average daylight in August / Average sunshine in August - Diagonal, IA
  • Average daylight in August: 13h and 4min

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 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in August
Diagonal, IA

Average sunshine days in August - Diagonal, IA
  • Average sunshine days in August: 14.5 days

The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is May (10.6 days).

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Average UV index in August
Diagonal, IA

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

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Average cloud cover in August
Diagonal, IA

Average cloud cover in August - Diagonal, IA
  • Average cloud cover in August: 29

The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in August
Diagonal, IA

Average visibility in August - Diagonal, IA
  • 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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Diagonal, Iowa, USA

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