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
August experiences an average high-temperature of a still warm 79.9°F (26.6°C), barely different from July's 80.2°F (26.8°C). The mean low-temperature during August nights is a refreshing 62.1°F (16.7°C).Humidity
In August, the average relative humidity is 82%.Rainfall
In Prophetstown, in August, it is raining for 15.2 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 151.5 rainfall days, and 30.24" (768mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall.Daylight
In August, the average length of the day is 13h and 48min.On the first day of August, sunrise is at 5:54 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 6:25 am and sunset at 7:34 pm CDT.
Sunshine
The average sunshine in August is 9.7h.UV index
July and August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In August, the UV index of 6 transforms into the following advice:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in August?
What is the average humidity in August?
How much does it rain in August?
When it does not snow?
How many hours of daylight does Prophetstown have in August?
When are sunrise and sunset in August?
How many hours of sunshine does Prophetstown have in August?
What is the month with the highest UV index in Prophetstown?
What is the UV index intensity in August?
Average temperature in August
Prophetstown, IL
- Average high temperature in August: 79.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (27.7°F).
- Average low temperature in August: 62.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in August
Prophetstown, IL
- 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 (29.91"Hg).
Average wind speed in August
Prophetstown, IL
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in August
Prophetstown, IL
- Average humidity in August: 82%
The months with the highest relative humidity are January and July (85%).
The month with the lowest relative humidity is October (72%).
Average rainfall in August
Prophetstown, IL
- Average rainfall in August: 2.24"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.42").
Average rainfall days in August
Prophetstown, IL
- Average rainfall days in August: 15.2 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in August
Prophetstown, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Prophetstown, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.5 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
Prophetstown, IL
- 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: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Prophetstown, IL
- Average sunshine days in August: 12.7 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (9.1 days).
Average UV index in August
Prophetstown, IL
- Average UV index in August: 6
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in August
Prophetstown, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility in August
Prophetstown, IL
- 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).
Prophetstown, Illinois, USA
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