August weather forecast
Windham, IA

Share

Weather in August

August, the last month of the summer in Windham, is also a moderately hot month, with an average temperature varying between 80.6°F (27°C) and 62.2°F (16.8°C).

Temperature

Windham experiences an average high-temperature of a still moderately hot 80.6°F (27°C) in August, marking an insignificant shift from 81.5°F (27.5°C) in July. During the month of August, an average temperature of 62.2°F (16.8°C) is noted during the nights.

Heat index

The heat index in August is estimated at a hot 86°F (30°C). Fatigue might occur with continuous exposure and activity, potentially causing heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index has the possibility to be enhanced by 15 Fahrenheit (8 Celsius) degrees when there is direct sun exposure.
Note: The heat index, also known as 'feels like' or 'felt air temperature', joins air temperature with relative humidity to produce a temperature perception for humans. The influence of weather can be personal, changing with an individual's body mass, height, and level of physical exertion. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids frequently fail to realize the necessity for resting and hydrating. Thirst is an advanced indication of dehydration - hence, maintaining hydration, especially during extended physical activities, becomes essential.

Humidity

The average relative humidity in August is 79%.

Rainfall

In Windham, in August, it is raining for 12.8 days, with typically 1.93" (49mm) of accumulated precipitation. In Windham, Iowa, during the entire year, the rain falls for 140.4 days and collects up to 29.57" (751mm) of precipitation.

Snowfall

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

Daylight

In Windham, the average length of the day in August is 13h and 48min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:41 pm CDT.

Sunshine

In August, the average sunshine is 9.9h.

UV index

In Windham, the average daily maximum UV index in August is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In August, the maximum UV index of 5 suggests these recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Updated: Aug 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August?

In Windham, in August, the average high-temperature is 80.6°F (27°C), and the average low-temperature is 62.2°F (16.8°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, in August is estimated at 86°F (30°C).

What is the average humidity in August in Windham?

In August, the average relative humidity is 79%.

How much does it rain in August?

In August, the rain falls for 12.8 days. Throughout August, 1.93" (49mm) of precipitation is accumulated.

When it does not snow?

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

How many hours of daylight does Windham have in August?

The average day length in August is 13h and 48min.

When is the sunrise / sunset in August?

On the first day of August, sunrise is at 6:02 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 6:32 am and sunset at 7:41 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.9h.

How high is the UV index in August?

In Windham, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes 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
Windham, IA

Average temperature in August - Windham, IA
  • Average high temperature in August: 80.6°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in August: 62.2°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

Average pressure in August
Windham, IA

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
Windham, IA

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

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.9mph).

Average humidity in August
Windham, IA

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

The months with the highest relative humidity are January and July (83%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Windham, IA

Average rainfall in August - Windham, IA
  • Average rainfall in August: 1.93"

The wettest month (with the highest rainfall) is May (4.69").
The driest months (with the least rainfall) are January and February (1.34").

Average rainfall days in August
Windham, IA

Average rainfall days in August - Windham, IA
  • Average rainfall days in August: 12.8 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5 days).

Average snowfall in August
Windham, IA

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

The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Windham, IA

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

The month with the highest number of snowfall days is January (10.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in August / Average sunshine in August - Windham, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in August
Windham, IA

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

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10 days).

Average UV index in August
Windham, IA

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

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

Average cloud cover in August
Windham, IA

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

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in August
Windham, IA

Average visibility in August - Windham, 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).

Windham, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location