August weather forecast
Rossville, IL

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Weather in August

The last month of the summer, August, is another warm month in Rossville, Illinois, with an average temperature varying between 80.2°F (26.8°C) and 63°F (17.2°C).

Temperature

Rossville's weather in August, with an average high-temperature of a still moderately hot 80.2°F (26.8°C), subtly shifts from July's 81.1°F (27.3°C). In the month of August, Rossville experiences an average low-temperature of 63°F (17.2°C).

Humidity

In Rossville, the average relative humidity in August is 83%.

Rainfall

In Rossville, in August, during 14.3 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, there are 146.3 rainfall days, and 22.76" (578mm) of precipitation is accumulated.

Snowfall

In Rossville, snow does not fall in May through October.

Daylight

In August, the average length of the day is 13h and 43min.
On the first day of August, sunrise is at 5:48 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:23 pm CDT.

Sunshine

The average sunshine in August is 9.8h.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index, 6 during August, leads to the following recommendations:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
Updated: Jun 26, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in August?

The high-temperature, in August, in Rossville, is 80.2°F (26.8°C), while the low-temperature averages to 63°F (17.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is estimated at 87.8°F (31°C).

What is the average humidity in August?

In Rossville, the average relative humidity in August is 83%.

How many days does it rain in August?

In August, the rain falls for 14.3 days. Throughout August, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

May through October are months without snowfall.

How many hours of daylight does Rossville have in August?

In August, the average day length is 13h and 43min.

What time are sunrise and sunset in August?

In August, on the first day of the month, sunrise is at 5:48 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 6:17 am and sunset at 7:23 pm CDT.

How long on average sun shines in August?

The average sunshine duration in August is 9.8h.

What are the months with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in August?

In Rossville, the average daily maximum UV index in August is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
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
Rossville, IL

Average temperature in August - Rossville, IL
  • Average high temperature in August: 80.2°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.5°F).

  • Average low temperature in August: 63°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 (19.8°F).

Average pressure in August
Rossville, IL

Average pressure in August - Rossville, IL
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Rossville, IL

Average wind speed in August - Rossville, IL
  • Average wind speed in August: 6.3mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.3mph).

Average humidity in August
Rossville, IL

Average humidity in August - Rossville, IL
  • Average humidity in August: 83%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (72%).

Average rainfall in August
Rossville, IL

Average rainfall in August - Rossville, IL
  • Average rainfall in August: 2.13"

The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is February (1.18").

Average rainfall days in August
Rossville, IL

Average rainfall days in August - Rossville, IL
  • Average rainfall days in August: 14.3 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (6.7 days).

Average snowfall in August
Rossville, IL

Average snowfall in August - Rossville, IL
  • Average snowfall in August: 0"

The month with the highest snowfall is February (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in August
Rossville, IL

Average snowfall days in August - Rossville, IL
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (9.8 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
Rossville, IL

Average daylight in August / Average sunshine in August - Rossville, IL
  • Average daylight in August: 13h and 4min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in August
Rossville, IL

Average sunshine days in August - Rossville, IL
  • Average sunshine days in August: 12.1 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is July (9.5 days).

Average UV index in August
Rossville, IL

Average UV index in August - Rossville, IL
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in August
Rossville, IL

Average cloud cover in August - Rossville, IL
  • Average cloud cover in August: 33

The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are June, August and September (Cloud cover 33).

Average visibility in August
Rossville, IL

Average visibility in August - Rossville, IL
  • Average visibility in August: 5mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Rossville, Illinois, USA

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