Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Garrison, Iowa, registers an average high-temperature of a still warm 79°F (26.1°C) with the arrival of August, showing minor deviation from the preceding month. Garrison records a mean low-temperature of 61.2°F (16.2°C) in August.Humidity
The average relative humidity in August in Garrison is 81%.Rainfall
In August, in Garrison, the rain falls for 10.1 days. Throughout August, 0.75" (19mm) of precipitation is accumulated. Throughout the year, in Garrison, there are 103.1 rainfall days, and 10.63" (270mm) of precipitation is accumulated.Snowfall
In Garrison, snow does not fall in May through September.Daylight
In Garrison, Iowa, the average length of the day in August is 13h and 50min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:27 pm. On the last day of August, sunrise is at 6:33 am and sunset at 7:43 pm CDT.
Sunshine
In Garrison, the average sunshine in August is 9.8h.UV index
The average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Garrison in August?
What is the average humidity in August in Garrison?
How much does it rain in Garrison in August?
When it does not snow in Garrison?
How many hours of daylight does Garrison have in August?
When are sunrise and sunset in August in Garrison?
How many hours of sunshine does Garrison have in August?
What is the UV index reading in August in Garrison?
Average temperature in August
Garrison, IA
- Average high temperature in August: 79°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 (25.3°F).
- Average low temperature in August: 61.2°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).
Average pressure in August
Garrison, 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 (29.89"Hg).
Average wind speed in August
Garrison, IA
- Average wind speed in August: 7mph
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 (7mph).
Average humidity in August
Garrison, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Garrison, IA
- Average rainfall in August: 0.75"
The wettest month (with the highest rainfall) is May (1.85").
The driest month (with the least rainfall) is February (0.39").
Average rainfall days in August
Garrison, IA
- Average rainfall days in August: 10.1 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (3.4 days).
Average snowfall in August
Garrison, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Garrison, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (7.8 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
Garrison, 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 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: 3h and 54min).
Average sunshine days in August
Garrison, IA
- Average sunshine days in August: 18.2 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (13.4 days).
Average UV index in August
Garrison, IA
- Average UV index in August: 5
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in August
Garrison, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in August
Garrison, 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).
Garrison, Iowa, USA
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