August weather forecast
Colusa, IL

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Weather in August

The last month of the summer, August, is another warm month in Colusa, Illinois, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 63.7°F (17.6°C).

Temperature

Colusa observes a minor difference in average high-temperatures between July's 82.6°F (28.1°C) and August's 82.2°F (27.9°C). In August, the average low-temperature records at a comfortable 63.7°F (17.6°C) during the nights.

Heat index

The heat index value for August is evaluated at a hot 89.6°F (32°C). With prolonged exposure and constant activity, one might feel exhausted and experience heat cramps.
Evaluating the heat index requires understanding its values in the shade and with gentle winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'feels like', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Considering the impact of direct sunlight, it's possible for the heat index to surge by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.

Humidity

In Colusa, the average relative humidity in August is 79%.

Rainfall

In Colusa, during August, the rain falls for 11.7 days and regularly aggregates up to 1.69" (43mm) of precipitation. In Colusa, Illinois, during the entire year, the rain falls for 127.6 days and collects up to 21.02" (534mm) of precipitation.

Snowfall

In Colusa, snow does not fall in May through September.

Daylight

In August, the average length of the day is 13h and 44min.
On the first day of August, sunrise is at 6:02 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:37 pm CDT.

Sunshine

The average sunshine in August in Colusa is 9.9h.

UV index

The months with the highest UV index in Colusa are June through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for the average person.
Note: An average UV index of 6 in August transforms into this advice:
Inhibit overexposure. Warding off sun damage is of utmost importance. 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. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
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Frequently asked questions

What are August temperatures in Colusa?

The high-temperature, in August, in Colusa, records 82.2°F (27.9°C), while the low-temperature is 63.7°F (17.6°C). The average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 89.6°F (32°C).

What is the average humidity in August in Colusa?

In August, the average relative humidity is 79%.

How much does it rain in Colusa in August?

In Colusa, in August, it is raining for 11.7 days, with typically 1.69" (43mm) of accumulated precipitation.

When it does not snow in Colusa?

May through September are months without snowfall.

How many hours of daylight does Colusa have in August?

In August, the average day length in Colusa, Illinois, is 13h and 44min.

When are sunrise and sunset in August in Colusa?

On the first day of August in Colusa, Illinois, sunrise is at 6:02 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 6:31 am and sunset at 7:37 pm CDT.

How many hours of sunshine does Colusa have in August?

In August, the average sunshine duration in Colusa is 9.9h.

What are the months with the highest UV index in Colusa?

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

How high is the UV index in August in Colusa?

In August, the average daily maximum UV index in Colusa, Illinois, is 6. A UV Index reading of 6 to 7 represents a high health risk 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
Colusa, IL

Average temperature in August - Colusa, IL
  • Average high temperature in August: 82.2°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in August: 63.7°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

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Average pressure in August
Colusa, IL

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

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in August
Colusa, IL

Average wind speed in August - Colusa, IL
  • Average wind speed in August: 6.7mph

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

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Average humidity in August
Colusa, IL

Average humidity in August - Colusa, IL
  • Average humidity in August: 79%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Colusa, IL

Average rainfall in August - Colusa, IL
  • Average rainfall in August: 1.69"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is January (0.83").

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Average rainfall days in August
Colusa, IL

Average rainfall days in August - Colusa, IL
  • Average rainfall days in August: 11.7 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (4.3 days).

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Average snowfall in August
Colusa, IL

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

The month with the highest snowfall is January (3.15").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Colusa, IL

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

The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in August /
Average sunshine in August
Colusa, IL

Average daylight in August / Average sunshine in August - Colusa, 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 months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in August
Colusa, IL

Average sunshine days in August - Colusa, IL
  • Average sunshine days in August: 17.2 days

The month with the most sunshine days is December (20 days).
The months with the least sunshine days are May and June (11.8 days).

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Average UV index in August
Colusa, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in August
Colusa, IL

Average cloud cover in August - Colusa, IL
  • Average cloud cover in August: 30

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in August
Colusa, IL

Average visibility in August - Colusa, IL
  • Average visibility in August: 6mi

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

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Colusa, Illinois, USA

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