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's onset brings an average high-temperature of a still warm 79.7°F (26.5°C), showing a minute difference from July's 80.2°F (26.8°C). Morrison in August anticipates an average nighttime temperature of 61.7°F (16.5°C).Humidity
The average relative humidity in August is 82%.Rainfall
In Morrison, in August, it is raining for 13.7 days, with typically 1.97" (50mm) of accumulated precipitation. Throughout the year, there are 145.1 rainfall days, and 27.2" (691mm) of precipitation is accumulated.Snowfall
In Morrison, snow does not fall in May through September.Daylight
In Morrison, the average length of the day in August is 13h and 49min.On the first day of the month, sunrise is at 5:54 am and sunset at 8:17 pm. On the last day of August, sunrise is at 6:25 am and sunset at 7:34 pm CDT.
Sunshine
The average sunshine in August is 9.7h.UV index
In Morrison, the average daily maximum UV index in August is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 5 in August translates into this advice:
Guard yourself - An obligation to protect skin and eyes from harm exists. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature?
What is the average humidity in August?
How many days does it rain in August?
When it does not snow?
What is the average length of the day in August?
What time are sunrise and sunset in August?
How long on average sun shines in August?
What is the UV index reading in August?
Average temperature in August
Morrison, IL
- Average high temperature in August: 79.7°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°F).
- Average low temperature in August: 61.7°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in August
Morrison, 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
Morrison, 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
Morrison, IL
- Average humidity in August: 82%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in August
Morrison, IL
- Average rainfall in August: 1.97"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (1.22").
Average rainfall days in August
Morrison, IL
- Average rainfall days in August: 13.7 days
The months with the highest number of rainy days are May and June (17.8 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in August
Morrison, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Morrison, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Morrison, 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 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in August
Morrison, IL
- Average sunshine days in August: 14.6 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in August
Morrison, IL
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in August
Morrison, IL
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in August
Morrison, 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).
Morrison, Illinois, USA
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