August weather forecast
McGregor, IA

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Weather in August

The last month of the summer, August, is also a moderately hot month in McGregor, Iowa, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 59.4°F (15.2°C).

Temperature

McGregor's transition from July to August introduces an average high-temperature of a still moderately hot 78.6°F (25.9°C), marking an insignificant variation from the 79.9°F (26.6°C). The temperature in McGregor dips to an average of 59.4°F (15.2°C) during August nights.

Humidity

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

Rainfall

In McGregor, in August, it is raining for 11.8 days, with typically 1.77" (45mm) of accumulated precipitation. Throughout the year, there are 124.7 rainfall days, and 22.56" (573mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall.

Daylight

In McGregor, the average length of the day in August is 13h and 53min.
On the first day of August, sunrise is at 5:56 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:40 pm CDT.

Sunshine

August has the most sunshine of the year, with an average of 9.8h of sunshine.

UV index

The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 5 during August translates into the following guidance:
Undertake protective steps - Recommendations to avoid sunburn are issued. Direct Sun exposure should be minimized especially during midday when radiation is most intense. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Updated: Jul 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average August temperature?

The average high-temperature, in August, in McGregor, is 78.6°F (25.9°C), while the average low-temperature is 59.4°F (15.2°C).

What is the average humidity in August?

The average relative humidity in August in McGregor is 80%.

How many days does it rain in August?

In McGregor, in August, it is raining for 11.8 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow in McGregor?

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

How many hours of daylight does McGregor have in August?

In August, the average day length is 13h and 53min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 5:56 am and sunset at 8:25 pm. On the last day of the month, sunrise is at 6:28 am and sunset at 7:40 pm CDT.

What month has the most sunshine?

The month with the most sunshine in McGregor is August, with an average of 9.8h of sunshine.

How long on average sun shines in August?

In August, the average sunshine duration is 9.8h.

What is the UV index reading in August?

The average daily maximum UV index in August in McGregor is 5. A UV Index estimate 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
McGregor, IA

Average temperature in August - McGregor, IA
  • Average high temperature in August: 78.6°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.2°F).

  • Average low temperature in August: 59.4°F

The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).

Average pressure in August
McGregor, IA

Average pressure in August - McGregor, IA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in August
McGregor, IA

Average wind speed in August - McGregor, IA
  • Average wind speed in August: 6.6mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in August
McGregor, IA

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

The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (76%).

Average rainfall in August
McGregor, IA

Average rainfall in August - McGregor, IA
  • Average rainfall in August: 1.77"

The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in August
McGregor, IA

Average rainfall days in August - McGregor, IA
  • Average rainfall days in August: 11.8 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
McGregor, IA

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

The month with the highest snowfall is February (3.94").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
McGregor, IA

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

The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

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

The month with the longest days is June (Average daylight: 15h and 18min).
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 August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).

Average sunshine days in August
McGregor, IA

Average sunshine days in August - McGregor, IA
  • Average sunshine days in August: 16.7 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is June (9.6 days).

Average UV index in August
McGregor, IA

Average UV index in August - McGregor, 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, November and December (UV index 1).

Average cloud cover in August
McGregor, IA

Average cloud cover in August - McGregor, IA
  • Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in August
McGregor, IA

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

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

McGregor, Iowa, USA

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