August weather forecast
Luther, IA

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Weather in August

August, the last month of the summer in Luther, is another warm month, with temperature in the range of an average high of 80.8°F (27.1°C) and an average low of 62.2°F (16.8°C).

Temperature

August's presence marks an average high-temperature of a still warm 80.8°F (27.1°C), subtly varied from July's 81.9°F (27.7°C). Luther's average low-temperature for the month of August records at a refreshing 62.2°F (16.8°C).

Heat index

In August, the average heat index is calculated to be a hot 86°F (30°C). If one persists in activity during exposure, it could induce weariness and subsequently, heat cramps.
When referencing the heat index, its values are suitable for shady environments and light breezes. The direct sun can potentially cause the heat index to increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', ties air temperature with relative humidity to produce the perceived temperature sensation. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Take note that direct exposure to the sun can increase the felt temperature, possibly adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values remain especially vital for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.

Humidity

In August, the average relative humidity is 80%.

Rainfall

In Luther, in August, during 13.1 rainfall days, 2.56" (65mm) of precipitation is typically accumulated. Throughout the year, there are 130.8 rainfall days, and 26.57" (675mm) of precipitation is accumulated.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 49min.
On the first day of the month, sunrise is at 6:09 am and sunset at 8:33 pm. On the last day of August, sunrise is at 6:40 am and sunset at 7:50 pm CDT.

Sunshine

In August, the average sunshine is 9.8h.

UV index

The average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 5 suggests this advice:
Act with care - The suggestion to avoid sunburn is emphasized. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Enhance your sun protection with tightly woven, yet airy clothing.
Updated: Aug 19, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

In August, the average high-temperature and low-temperature are 80.8°F (27.1°C) and 62.2°F (16.8°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 86°F (30°C).

What is the average humidity in August?

In Luther, the average relative humidity in August is 80%.

How many days does it rain in August?

In August, the rain falls for 13.1 days. Throughout August, 2.56" (65mm) of precipitation is accumulated.

When it does not snow?

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

What is the average length of the day in August?

The average day length in August is 13h and 49min.

When are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 6:09 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:50 pm CDT.

How long on average sun shines in August in Luther?

In Luther, the average sunshine duration in August is 9.8h.

What is the UV index reading in August?

In Luther, Iowa, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Luther, IA

Average temperature in August - Luther, IA
  • Average high temperature in August: 80.8°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (26.8°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in August
Luther, IA

Average pressure in August - Luther, 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).

Average wind speed in August
Luther, IA

Average wind speed in August - Luther, IA
  • Average wind speed in August: 7.1mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).

Average humidity in August
Luther, IA

Average humidity in August - Luther, IA
  • Average humidity in August: 80%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Luther, IA

Average rainfall in August - Luther, IA
  • Average rainfall in August: 2.56"

The wettest month (with the highest rainfall) is May (4.13").
The driest months (with the least rainfall) are January and February (0.87").

Average rainfall days in August
Luther, IA

Average rainfall days in August - Luther, IA
  • Average rainfall days in August: 13.1 days

The months with the highest number of rainy days are May and June (17.5 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in August
Luther, IA

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

The month with the highest snowfall is January (4.13").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Luther, IA

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

The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

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

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
Luther, IA

Average sunshine days in August - Luther, IA
  • Average sunshine days in August: 15.8 days

The month with the most sunshine days is December (19 days).
The month with the least sunshine days is June (10.8 days).

Average UV index in August
Luther, IA

Average UV index in August - Luther, IA
  • Average UV index in August: 5

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

Average cloud cover in August
Luther, IA

Average cloud cover in August - Luther, IA
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

Average visibility in August
Luther, IA

Average visibility in August - Luther, IA
  • Average visibility in August: 5mi

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

Luther, Iowa, USA

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