August weather forecast
Grundy Center, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in Grundy Center, Iowa, with temperature in the range of an average high of 78.4°F (25.8°C) and an average low of 61.2°F (16.2°C).

Temperature

Grundy Center commences August with an average high-temperature of a still moderately hot 78.4°F (25.8°C), maintaining a close resemblance to the previous month. Throughout August, Grundy Center's nights cool down to an average of 61.2°F (16.2°C).

Humidity

In Grundy Center, the average relative humidity in August is 82%.

Rainfall

In August, the rain falls for 14.3 days. Throughout August, 2.17" (55mm) of precipitation is accumulated. In Grundy Center, during the entire year, the rain falls for 137.9 days and collects up to 28.62" (727mm) of precipitation.

Snowfall

June through September are months without snowfall in Grundy Center, Iowa.

Daylight

In August, the average length of the day is 13h and 50min.
On the first day of August, sunrise is at 6:04 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:46 pm CDT.

Sunshine

In August, the average sunshine in Grundy Center is 9.9h.

UV index

In August, the average daily maximum UV index in Grundy Center, Iowa, is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily high UV index of 5 in August leads to these guidelines:
Act with care - The need to guard against sun damage is communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Grundy Center?

In August, the average high-temperature and low-temperature in Grundy Center, Iowa, are 78.4°F (25.8°C) and 61.2°F (16.2°C) respectively.

What is the average humidity in August in Grundy Center?

In Grundy Center, Iowa, the average relative humidity in August is 82%.

How much does it rain in Grundy Center in August?

In Grundy Center, Iowa, in August, during 14.3 rainfall days, 2.17" (55mm) of precipitation is typically accumulated.

When it does not snow in Grundy Center?

June through September are months without snowfall in Grundy Center, Iowa.

What is the average length of the day in August in Grundy Center?

In Grundy Center, the average day length in August is 13h and 50min.

When are sunrise and sunset in August in Grundy Center?

On the first day of August, sunrise is at 6:04 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:36 am and sunset at 7:46 pm CDT.

How long on average sun shines in August in Grundy Center?

The average sunshine duration in August in Grundy Center, Iowa, is 9.9h.

What is the UV index reading in August in Grundy Center?

The average daily maximum UV index in August in Grundy Center is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe 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
Grundy Center, IA

Average temperature in August - Grundy Center, IA
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (24.8°F).

  • Average low temperature in August: 61.2°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (12.2°F).

Average pressure in August
Grundy Center, IA

Average pressure in August - Grundy Center, 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 (29.89"Hg).

Average wind speed in August
Grundy Center, IA

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

The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).

Average humidity in August
Grundy Center, IA

Average humidity in August - Grundy Center, IA
  • Average humidity in August: 82%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (71%).

Average rainfall in August
Grundy Center, IA

Average rainfall in August - Grundy Center, IA
  • Average rainfall in August: 2.17"

The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is January (1.02").

Average rainfall days in August
Grundy Center, IA

Average rainfall days in August - Grundy Center, IA
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is June (18.6 days).
The month with the least rainy days is February (3.6 days).

Average snowfall in August
Grundy Center, IA

Average snowfall in August - Grundy Center, IA
  • Average snowfall in August: 0"

The month with the highest snowfall is February (4.92").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Grundy Center, IA

Average snowfall days in August - Grundy Center, 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
Grundy Center, IA

Average daylight in August / Average sunshine in August - Grundy Center, 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 6min).

  • 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: 3h and 54min).

Average sunshine days in August
Grundy Center, IA

Average sunshine days in August - Grundy Center, IA
  • Average sunshine days in August: 14.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.3 days).

Average UV index in August
Grundy Center, IA

Average UV index in August - Grundy Center, IA
  • Average UV index in August: 5

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

Average cloud cover in August
Grundy Center, IA

Average cloud cover in August - Grundy Center, IA
  • Average cloud cover in August: 31

The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in August
Grundy Center, IA

Average visibility in August - Grundy Center, 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).

Grundy Center, Iowa, USA

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