August weather forecast
Carlisle, IA

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Weather in August

The last month of the summer, August, is another warm month in Carlisle, Iowa, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 62.2°F (16.8°C).

Temperature

August's arrival brings an average high-temperature of a still warm 81.5°F (27.5°C), demonstrating subtle variation from the preceding month. During August, Carlisle observes a consistent average nighttime temperature of 62.2°F (16.8°C).

Heat index

August's mean heat index is computed to be a hot 87.8°F (31°C). Long-standing exposure coupled with ongoing activity could result in exhaustion, possibly causing heat cramps.
Keep in mind the heat index values are meant for areas in shade and with light wind. 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 'apparent temperature' or 'feels like', gives an indication of how one might feel in terms of heat after considering humidity. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.

Humidity

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

Rainfall

In August, the rain falls for 11.5 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 124.7 rainfall days, and 26.34" (669mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Carlisle.

Daylight

The average length of the day in August is 13h and 47min.
On the first day of August, sunrise is at 6:09 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:48 pm CDT.

Sunshine

In August, the average sunshine 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 threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: During August, 6 as the daily maximum UV index converts into the following advice:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. Be aware that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. and try to reduce direct sun exposure during this period as much as possible. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are August temperatures?

The high-temperature during August is 81.5°F (27.5°C) and the low-temperature is 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is computed to be 87.8°F (31°C).

What is the average humidity in August?

The average relative humidity in August is 79%.

How many days does it rain in August?

In Carlisle, during August, the rain falls for 11.5 days and regularly aggregates up to 2.36" (60mm) of precipitation.

When it does not snow?

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

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

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

When are sunrise and sunset in August?

On the first day of August, sunrise is at 6:09 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:39 am and sunset at 7:48 pm CDT.

How many hours of sunshine does Carlisle have in August?

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

What is the month with the highest UV index?

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

What is the UV index intensity in August in Carlisle?

The average daily maximum UV index in August is 6. A UV Index estimate of 6 to 7 represents 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
Carlisle, IA

Average temperature in August - Carlisle, IA
  • Average high temperature in August: 81.5°F

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.4°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 (14.9°F).

Average pressure in August
Carlisle, IA

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).

Average wind speed in August
Carlisle, IA

Average wind speed in August - Carlisle, IA
  • Average wind speed in August: 6.9mph

The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).

Average humidity in August
Carlisle, IA

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

The months with the highest relative humidity are January, February and June (82%).
The month with the lowest relative humidity is October (70%).

Average rainfall in August
Carlisle, IA

Average rainfall in August - Carlisle, IA
  • Average rainfall in August: 2.36"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (0.91").

Average rainfall days in August
Carlisle, IA

Average rainfall days in August - Carlisle, IA
  • Average rainfall days in August: 11.5 days

The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (4 days).

Average snowfall in August
Carlisle, IA

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

The month with the highest snowfall is January (4.37").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Carlisle, IA

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

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Carlisle, 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 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in August
Carlisle, IA

Average sunshine days in August - Carlisle, IA
  • Average sunshine days in August: 18.2 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (11.7 days).

Average UV index in August
Carlisle, IA

Average UV index in August - Carlisle, 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).

Average cloud cover in August
Carlisle, IA

Average cloud cover in August - Carlisle, 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, August and September (Cloud cover 31).

Average visibility in August
Carlisle, IA

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

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

Carlisle, Iowa, USA

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