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
Griffen experiences a minor change to a still warm 79.9°F (26.6°C) in average high-temperature during August, closely reflecting July. In Griffen, in August, the average low-temperature is a comfortable 61.7°F (16.5°C).Humidity
In Griffen, the average relative humidity in August is 80%.Rainfall
In Griffen, in August, during 13.1 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. In Griffen, during the entire year, the rain falls for 123.3 days and collects up to 20.98" (533mm) of precipitation.Snowfall
June through September are months without snowfall in Griffen.Daylight
In Griffen, Iowa, the average length of the day in August is 13h and 50min.On the first day of August in Griffen, sunrise is at 6:09 am and sunset at 8:33 pm. On the last day of the month, sunrise is at 6:40 am and sunset at 7:50 pm CDT.
Sunshine
In August, the average sunshine in Griffen is 9.7h.UV index
The average daily maximum UV index in August in Griffen 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 the ordinary person.Note: The maximum daily UV index, 5 in August, converts into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What are the temperatures in Griffen in August?
What is the average humidity in August in Griffen?
How many days does it rain in August in Griffen?
When it does not snow in Griffen?
How many hours of daylight does Griffen have in August?
When is the sunrise / sunset in August in Griffen?
How long on average sun shines in August in Griffen?
What is the UV index reading in August in Griffen?
Average temperature in August
Griffen, IA
- Average high temperature in August: 79.9°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (26.4°F).
- Average low temperature in August: 61.7°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
Griffen, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in August
Griffen, IA
- Average wind speed in August: 7.1mph
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 (7.1mph).
Average humidity in August
Griffen, IA
- Average humidity in August: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (69%).
Average rainfall in August
Griffen, IA
- Average rainfall in August: 2.05"
The wettest month (with the highest rainfall) is June (3.35").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in August
Griffen, IA
- Average rainfall days in August: 13.1 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.2 days).
Average snowfall in August
Griffen, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Griffen, 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 June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Griffen, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in August
Griffen, IA
- Average sunshine days in August: 15.6 days
The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is June (10.5 days).
Average UV index in August
Griffen, 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, February, October, November and December (UV index 2).
Average cloud cover in August
Griffen, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in August
Griffen, 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).
Griffen, Iowa, USA
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