August weather forecast
Mount Morris, IL

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Weather in August

August, the last month of the summer in Mount Morris, is also a moderately hot month, with an average temperature ranging between min 61°F (16.1°C) and max 78.4°F (25.8°C).

Temperature

August experiences an average high-temperature of a still moderately hot 78.4°F (25.8°C), barely different from July's 79.9°F (26.6°C). In the month of August, Mount Morris witnesses a consistent average low-temperature of 61°F (16.1°C).

Humidity

In August, the average relative humidity in Mount Morris is 84%.

Rainfall

In August, the rain falls for 16.7 days. Throughout August, 2.68" (68mm) of precipitation is accumulated. Throughout the year, in Mount Morris, there are 154.8 rainfall days, and 32.36" (822mm) of precipitation is accumulated.

Snowfall

In Mount Morris, snow does not fall in June through September.

Daylight

The average length of the day in August is 13h and 49min.
On the first day of August in Mount Morris, sunrise is at 5:51 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:32 pm CDT.

Sunshine

The average sunshine in August in Mount Morris is 9.4h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: The daily high UV index of 5 during August translates into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Mount Morris in August?

During August, Mount Morris experiences an average high-temperature of 78.4°F (25.8°C) and a low-temperature of 61°F (16.1°C).

What is the average humidity in August in Mount Morris?

In Mount Morris, the average relative humidity in August is 84%.

How many days does it rain in August in Mount Morris?

In Mount Morris, during August, the rain falls for 16.7 days and regularly aggregates up to 2.68" (68mm) of precipitation.

When it does not snow in Mount Morris?

June through September are months without snowfall in Mount Morris.

How many hours of daylight does Mount Morris have in August?

In August, the average day length in Mount Morris, Illinois, is 13h and 49min.

What time are sunrise and sunset in August in Mount Morris?

On the first day of August in Mount Morris, sunrise is at 5:51 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 6:23 am and sunset at 7:32 pm CDT.

How many hours of sunshine does Mount Morris have in August?

In August, the average sunshine duration is 9.4h.

What are the months with the highest UV index in Mount Morris?

May through August, with an average maximum UV index of 5, are months with the highest UV index in Mount Morris.

What is the UV index reading in August in Mount Morris?

In August, the average daily maximum UV index in Mount Morris is 5. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Mount Morris, IL

Average temperature in August - Mount Morris, IL
  • Average high temperature in August: 78.4°F

The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (26.1°F).

  • Average low temperature in August: 61°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).

Average pressure in August
Mount Morris, IL

Average pressure in August - Mount Morris, IL
  • Average pressure in August: 29.97"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in August
Mount Morris, IL

Average wind speed in August - Mount Morris, IL
  • Average wind speed in August: 6.4mph

The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

Average humidity in August
Mount Morris, IL

Average humidity in August - Mount Morris, IL
  • Average humidity in August: 84%

The month with the highest relative humidity is January (86%).
The months with the lowest relative humidity are April and October (75%).

Average rainfall in August
Mount Morris, IL

Average rainfall in August - Mount Morris, IL
  • Average rainfall in August: 2.68"

The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is February (1.57").

Average rainfall days in August
Mount Morris, IL

Average rainfall days in August - Mount Morris, IL
  • Average rainfall days in August: 16.7 days

The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (5.3 days).

Average snowfall in August
Mount Morris, IL

Average snowfall in August - Mount Morris, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is January (5.79").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in August
Mount Morris, IL

Average snowfall days in August - Mount Morris, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Mount Morris, IL

Average daylight in August / Average sunshine in August - Mount Morris, 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 2min

The month with the most sunshine is July (Average sunshine: 9h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in August
Mount Morris, IL

Average sunshine days in August - Mount Morris, IL
  • Average sunshine days in August: 11.4 days

The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in August
Mount Morris, IL

Average UV index in August - Mount Morris, IL
  • 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 and December (UV index 1).

Average cloud cover in August
Mount Morris, IL

Average cloud cover in August - Mount Morris, IL
  • Average cloud cover in August: 35

The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is September (Cloud cover 34).

Average visibility in August
Mount Morris, IL

Average visibility in August - Mount Morris, IL
  • 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).

Mount Morris, Illinois, USA

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