August weather forecast
Delwood, IL

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Weather in August

The last month of the summer, August, is another warm month in Delwood, Illinois, with temperature in the range of an average low of 66°F (18.9°C) and an average high of 85.6°F (29.8°C).

Temperature

Delwood records a slight change with August's average high-temperatures adjusting to a warm 85.6°F (29.8°C) from July's 87.3°F (30.7°C). An average low-temperature of 66°F (18.9°C) is observed during August nights.

Heat index

In August, the heat index is evaluated at a torrid 96.8°F (36°C). More protective measures are required - heat exhaustion and heat cramps are likely. Heatstroke may follow lengthy activity.
Thinking about the heat index, one should account for its values in shaded areas with gentle breezes. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', ties air temperature with relative humidity to produce the perceived temperature sensation. Additional factors encompassing metabolic differences, the level of physical activity, and clothing can impact the individual's perception of temperature. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for babies and toddlers. Children commonly overlook the importance of rest and fluid replenishment. Thirst, being a delayed sign of dehydration, emphasizes the need to keep hydration up, especially during lengthy physical activities.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Exceeding the body's heat disposal threshold results in a rise in body temperature and potential thermal disorders.

Humidity

In Delwood, Illinois, the average relative humidity in August is 76%.

Rainfall

In Delwood, during August, the rain falls for 13.8 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 158.6 rainfall days, and 36.02" (915mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Delwood, the average length of the day in August is 13h and 34min.
On the first day of the month, sunrise is at 5:58 am and sunset at 8:02 pm. On the last day of August, sunrise is at 6:24 am and sunset at 7:24 pm CDT.

Sunshine

In August, the average sunshine in Delwood, Illinois, is 10.3h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A typical high UV index of 6 in August suggests the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Opt for tightly woven and loose clothing to enhance protection from the Sun.
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Frequently asked questions

Is it hot in Delwood during August?

In Delwood, in August, the average high-temperature is 85.6°F (29.8°C), and the average low-temperature is 66°F (18.9°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 96.8°F (36°C).

What is the average humidity in August in Delwood?

In August, the average relative humidity in Delwood is 76%.

How much does it rain in Delwood in August?

In Delwood, Illinois, during August, the rain falls for 13.8 days and regularly aggregates up to 2.52" (64mm) of precipitation.

When it does not snow in Delwood?

In Delwood, Illinois, snow does not fall in May through September.

How many hours of daylight does Delwood have in August?

In August, the average day length in Delwood is 13h and 34min.

What time are sunrise and sunset in August in Delwood?

In August, on the first day of the month, sunrise is at 5:58 am and sunset at 8:02 pm. On the last day of the month, in Delwood, Illinois, sunrise is at 6:24 am and sunset at 7:24 pm CDT.

How long on average sun shines in August in Delwood?

In Delwood, the average sunshine duration in August is 10.3h.

What is the month with the highest UV index in Delwood?

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

How high is the UV index in August in Delwood?

In Delwood, Illinois, the average daily maximum UV index in August is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from unprotected exposure to 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
Delwood, IL

Average temperature in August - Delwood, IL
  • Average high temperature in August: 85.6°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in August: 66°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in August
Delwood, IL

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

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Delwood, IL

Average wind speed in August - Delwood, IL
  • Average wind speed in August: 5.8mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in August
Delwood, IL

Average humidity in August - Delwood, IL
  • Average humidity in August: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in August
Delwood, IL

Average rainfall in August - Delwood, IL
  • Average rainfall in August: 2.52"

The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.57").

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Average rainfall days in August
Delwood, IL

Average rainfall days in August - Delwood, IL
  • Average rainfall days in August: 13.8 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in August
Delwood, IL

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

The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in August
Delwood, IL

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

The month with the highest number of snowfall days is January (5.3 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
Delwood, IL

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

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in August: 10h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

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Average sunshine days in August
Delwood, IL

Average sunshine days in August - Delwood, IL
  • Average sunshine days in August: 15 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (9.9 days).

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Average UV index in August
Delwood, IL

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

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

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Average cloud cover in August
Delwood, IL

Average cloud cover in August - Delwood, IL
  • Average cloud cover in August: 29

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

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Average visibility in August
Delwood, IL

Average visibility in August - Delwood, 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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Delwood, Illinois, USA

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