August weather forecast
Keokuk, IA

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Weather in August

As August arrives, Keokuk retains much of July’s warmth, but a slight dip in temperatures begins to occur. The weather remains perfect for outdoor pursuits, with long sunny days prevailing. Rainfall reduces, and the wind speed, although still mild, stabilizes. The gradual shift to autumn becomes apparent towards the end of the month, while the dry weather continues to dominate.

Temperature

The advent of August in Keokuk denotes an average high-temperature of a still warm 82.9°F (28.3°C), subtly different from July's 83.7°F (28.7°C). Keokuk, during the month of August, experiences an average low-temperature of 64°F (17.8°C).

Heat index

August's mean heat index is appraised at a hot 91.4°F (33°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
It is worth noting that heat index values are gauged for conditions in the shade and light breezes. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. In the direct sunlight, the weather's impact can be amplified, possibly boosting the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.

Humidity

In August, the average relative humidity is 78%.

Rainfall

In August, the rain falls for 12.2 days. Throughout August, 2.09" (53mm) of precipitation is accumulated. In Keokuk, during the entire year, the rain falls for 140.6 days and collects up to 27.72" (704mm) of precipitation.

Snowfall

In Keokuk, snow does not fall in May through September.

Daylight

In August, the average length of the day in Keokuk is 13h and 43min.
On the first day of August, sunrise is at 6:03 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

Sunshine

In August, the average sunshine is 10.1h.

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 threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: In August, a daily maximum UV index of 6 leads to the following instructions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
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Frequently asked questions

How hot does it get in Keokuk in August?

August temperatures in Keokuk, Iowa, vary between a high-temperature of 82.9°F (28.3°C) and a low-temperature of 64°F (17.8°C). In August, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which represents the influence of relative humidity on air temperature, is appraised at 91.4°F (33°C).

What is the average humidity in August in Keokuk?

In August, the average relative humidity in Keokuk is 78%.

How much does it rain in Keokuk in August?

In Keokuk, Iowa, in August, during 12.2 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Keokuk?

In Keokuk, Iowa, snow does not fall in May through September.

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

In August, the average day length in Keokuk is 13h and 43min.

What time are sunrise and sunset in August in Keokuk?

On the first day of August, sunrise is at 6:03 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:38 pm CDT.

How long on average sun shines in August in Keokuk?

In Keokuk, Iowa, the average sunshine duration in August is 10.1h.

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

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

How high is the UV index in August in Keokuk?

In August, the average daily maximum UV index in Keokuk is 6. A UV Index value of 6 to 7 symbolizes a high health risk 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
Keokuk, IA

Average temperature in August - Keokuk, IA
  • Average high temperature in August: 82.9°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (31.6°F).

  • Average low temperature in August: 64°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).

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Average pressure in August
Keokuk, IA

Average pressure in August - Keokuk, IA
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Keokuk, IA

Average wind speed in August - Keokuk, IA
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in August
Keokuk, IA

Average humidity in August - Keokuk, IA
  • Average humidity in August: 78%

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Keokuk, IA

Average rainfall in August - Keokuk, IA
  • Average rainfall in August: 2.09"

The wettest month (with the highest rainfall) is May (3.9").
The driest month (with the least rainfall) is January (1.34").

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Average rainfall days in August
Keokuk, IA

Average rainfall days in August - Keokuk, IA
  • Average rainfall days in August: 12.2 days

The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (5.7 days).

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Average snowfall in August
Keokuk, IA

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

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Keokuk, IA

Average snowfall days in August - Keokuk, 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 May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Keokuk, IA

Average daylight in August / Average sunshine in August - Keokuk, IA
  • 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 18min).

  • Average sunshine in August: 10h and 1min

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 18min).

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Average sunshine days in August
Keokuk, IA

Average sunshine days in August - Keokuk, IA
  • Average sunshine days in August: 17.2 days

The month with the most sunshine days is December (18.6 days).
The month with the least sunshine days is June (10.9 days).

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Average UV index in August
Keokuk, IA

Average UV index in August - Keokuk, 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, November and December (UV index 2).

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Average cloud cover in August
Keokuk, IA

Average cloud cover in August - Keokuk, IA
  • Average cloud cover in August: 28

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 28).

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Average visibility in August
Keokuk, IA

Average visibility in August - Keokuk, 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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Keokuk, Iowa, USA

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