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
Garnavillo's average high-temperature in August sits at a still warm 77.7°F (25.4°C), showing little difference from the previous month. In the month of August, the average low-temperature usually rests at a mild 59.9°F (15.5°C).Humidity
In August, the average relative humidity is 81%.Rainfall
In August, in Garnavillo, the rain falls for 13.4 days. Throughout August, 2.13" (54mm) of precipitation is accumulated. In Garnavillo, during the entire year, the rain falls for 138 days and collects up to 29.21" (742mm) of precipitation.Snowfall
In Garnavillo, snow does not fall in June through September.Daylight
In Garnavillo, the average length of the day in August is 13h and 53min.On the first day of the month, sunrise is at 5:57 am and sunset at 8:25 pm. On the last day of August, sunrise is at 6:29 am and sunset at 7:40 pm CDT.
Sunshine
August has the most sunshine of the year in Garnavillo, with an average of 9.9h of sunshine.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.Note: The UV index of 5 during August leads to these advisories:
Take necessary precautions - Protection from skin and eye injury is mandatory. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What is the usual temperature for Garnavillo in August?
What is the average humidity in August in Garnavillo?
How many days does it rain in August in Garnavillo?
When it does not snow in Garnavillo?
What is the average length of the day in August in Garnavillo?
What time are sunrise and sunset in August in Garnavillo?
What month has the most sunshine in Garnavillo?
How long on average sun shines in August in Garnavillo?
What is the month with the highest UV index in Garnavillo?
What is the UV index reading in August in Garnavillo?
Average temperature in August
Garnavillo, IA
- Average high temperature in August: 77.7°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (23.5°F).
- Average low temperature in August: 59.9°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in August
Garnavillo, 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 (29.89"Hg).
Average wind speed in August
Garnavillo, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Garnavillo, IA
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall in August
Garnavillo, IA
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is June (4.25").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in August
Garnavillo, IA
- Average rainfall days in August: 13.4 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in August
Garnavillo, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (5.04").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Garnavillo, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Garnavillo, 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 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in August
Garnavillo, IA
- Average sunshine days in August: 15 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in August
Garnavillo, IA
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Garnavillo, IA
- Average cloud cover in August: 31
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in August
Garnavillo, IA
- Average visibility in August: 5mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Garnavillo, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location
