August weather forecast
Glenwood, IA

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Weather in August

The last month of the summer, August, is another warm month in Glenwood, Iowa, with an average temperature ranging between min 63.1°F (17.3°C) and max 82.4°F (28°C).

Temperature

The beginning of August reveals an average high-temperature of a still warm 82.4°F (28°C), showing minimal deviation from the previous month. Throughout the month of August, Glenwood sees a steady low-temperature average of 63.1°F (17.3°C).

Heat index

Throughout August, the heat index is evaluated at a hot 89.6°F (32°C). Ongoing activity coupled with exposure often results in weariness and could induce heat cramps.
Heat index evaluations are typically in the context of light winds and shaded environments. The heat index may experience an enhancement of 15 Fahrenheit (8 Celsius) degrees under direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Kids are usually in more danger than grown-ups as they tend to sweat less. Plus, their bigger skin surface in relation to their small frames and increased heat generation due to their activity level make them more susceptible.

Humidity

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

Rainfall

In Glenwood, in August, it is raining for 14.1 days, with typically 2.91" (74mm) of accumulated precipitation. In Glenwood, during the entire year, the rain falls for 129.5 days and collects up to 27.48" (698mm) of precipitation.

Snowfall

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

Daylight

In August, the average length of the day is 13h and 46min.
On the first day of the month, sunrise is at 6:19 am and sunset at 8:38 pm. On the last day of August, sunrise is at 6:49 am and sunset at 7:56 pm CDT.

Sunshine

In Glenwood, the average sunshine in August is 9.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 6 in August translates into these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

How hot is it in Glenwood in August?

In August, in Glenwood, the average high-temperature is 82.4°F (28°C), and the average low-temperature is 63.1°F (17.3°C). In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is evaluated at 89.6°F (32°C).

What is the average humidity in August in Glenwood?

In August, the average relative humidity is 78%.

How much does it rain in Glenwood in August?

In Glenwood, in August, it is raining for 14.1 days, with typically 2.91" (74mm) of accumulated precipitation.

When it does not snow in Glenwood?

In Glenwood, Iowa, snow does not fall in June through September.

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

In Glenwood, Iowa, the average day length in August is 13h and 46min.

When is the sunrise / sunset in August in Glenwood?

In August, on the first day of the month, sunrise is at 6:19 am and sunset at 8:38 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 7:56 pm CDT.

How many hours of sunshine does Glenwood have in August?

In August, the average sunshine duration is 9.8h.

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

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

What is the UV index intensity in August in Glenwood?

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

Average temperature in August - Glenwood, IA
  • Average high temperature in August: 82.4°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in August: 63.1°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in August
Glenwood, IA

Average pressure in August - Glenwood, IA
  • Average pressure in August: 29.95"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
Glenwood, IA

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

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).

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Average humidity in August
Glenwood, IA

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

The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (67%).

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Average rainfall in August
Glenwood, IA

Average rainfall in August - Glenwood, IA
  • Average rainfall in August: 2.91"

The wettest month (with the highest rainfall) is June (4.57").
The driest months (with the least rainfall) are January and February (0.83").

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Average rainfall days in August
Glenwood, IA

Average rainfall days in August - Glenwood, IA
  • Average rainfall days in August: 14.1 days

The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is February (3.8 days).

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Average snowfall in August
Glenwood, IA

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

The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in August
Glenwood, IA

Average snowfall days in August - Glenwood, 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
Glenwood, IA

Average daylight in August / Average sunshine in August - Glenwood, 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 18min).

  • Average sunshine in August: 9h and 5min

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 42min).

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Average sunshine days in August
Glenwood, IA

Average sunshine days in August - Glenwood, IA
  • Average sunshine days in August: 13.8 days

The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is June (10.6 days).

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Average UV index in August
Glenwood, IA

Average UV index in August - Glenwood, 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
Glenwood, IA

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

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in August
Glenwood, IA

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

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