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
With the onset of August, the average high-temperature registers at a still warm 78.6°F (25.9°C), subtly different from July's 79.7°F (26.5°C). Julien's temperature drops to an average low of 60.4°F (15.8°C) during the nights of August.Humidity
The average relative humidity in August in Julien, Iowa, is 81%.Rainfall
In Julien, in August, it is raining for 12.1 days, with typically 1.73" (44mm) of accumulated precipitation. In Julien, during the entire year, the rain falls for 135.3 days and collects up to 27.4" (696mm) of precipitation.Snowfall
In Julien, snow does not fall in May through September.Daylight
In Julien, the average length of the day in August is 13h and 51min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:22 pm. On the last day of August, in Julien, sunrise is at 6:27 am and sunset at 7:38 pm CDT.
Sunshine
The months with the most sunshine are July and August, with an average of 9.7h of sunshine.UV index
In August, the average daily maximum UV index in Julien is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 in August converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August in Julien?
What is the average humidity in August in Julien?
How many days does it rain in August in Julien?
When it does not snow in Julien?
What is the average length of the day in August in Julien?
When are sunrise and sunset in August in Julien?
What is the month with the most sunshine in Julien?
How long on average sun shines in August in Julien?
What is the UV index reading in August in Julien?
Average temperature in August
Julien, IA
- Average high temperature in August: 78.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (25°F).
- Average low temperature in August: 60.4°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (12.4°F).
Average pressure in August
Julien, IA
- Average pressure in August: 29.97"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
Julien, IA
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Julien, IA
- Average humidity in August: 81%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is October (76%).
Average rainfall in August
Julien, IA
- Average rainfall in August: 1.73"
The wettest months (with the highest rainfall) are May and June (3.7").
The driest months (with the least rainfall) are January and February (1.14").
Average rainfall days in August
Julien, IA
- Average rainfall days in August: 12.1 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in August
Julien, IA
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Julien, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12.8 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
Julien, 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 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in August
Julien, IA
- Average sunshine days in August: 17.4 days
The months with the most sunshine days are November and December (17.5 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Julien, 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, November and December (UV index 1).
Average cloud cover in August
Julien, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Julien, IA
- Average visibility in August: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Julien, Iowa, USA
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