August weather forecast
Durham, IL

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Weather in August

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

Temperature

The transition from July to August sees an average high-temperature of a still warm 82.2°F (27.9°C), indicating a minor variance from the prior month. August nights are marked by an average temperature drop to a refreshing 63.7°F (17.6°C).

Heat index

In August, the average heat index is calculated to be a tropical 89.6°F (32°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Metrics for the heat index primarily focus on shaded spots and light wind conditions. If directly exposed to the sun, the heat index could rise by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', measures the perceived warmth when incorporating the humidity present in the air. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. When you're directly under the sun's rays, remember that the heat index may surge by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters are usually more at risk than adults, considering they sweat less. Additionally, their high skin surface area compared to their little bodies and their high heat production due to activity increases their risk.

Humidity

In August, the average relative humidity is 79%.

Rainfall

In Durham, during August, the rain falls for 11.7 days and regularly aggregates up to 1.69" (43mm) of precipitation. Throughout the year, in Durham, there are 127.6 rainfall days, and 21.02" (534mm) of precipitation is accumulated.

Snowfall

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

Daylight

The average length of the day in August in Durham 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

In Durham, the average sunshine in August is 9.9h.

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 unsafe exposure to UV radiation for ordinary individuals.
Note: In August, the maximum UV index of 6 translates into these guidelines:
Employ safeguards and advocate sun safety protocols. Shielding against skin and eye damage is crucial. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in August in Durham?

In August, the average high-temperature and low-temperature are 82.2°F (27.9°C) and 63.7°F (17.6°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in August in Durham?

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

How much does it rain in Durham in August?

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

When it does not snow in Durham?

May through September are months without snowfall.

What is the average length of the day in August in Durham?

The average day length in August is 13h and 44min.

What time are sunrise and sunset in August in Durham?

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.

How long on average sun shines in August in Durham?

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

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

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

What is the UV index reading in August in Durham?

The average daily maximum UV index in August in Durham is 6. A UV Index estimate of 6 to 7 represents a high hazard to health 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
Durham, IL

Average temperature in August - Durham, 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).

Average pressure in August
Durham, IL

Average pressure in August - Durham, 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).

Average wind speed in August
Durham, IL

Average wind speed in August - Durham, 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).

Average humidity in August
Durham, IL

Average humidity in August - Durham, 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%).

Average rainfall in August
Durham, IL

Average rainfall in August - Durham, 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").

Average rainfall days in August
Durham, IL

Average rainfall days in August - Durham, 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).

Average snowfall in August
Durham, IL

Average snowfall in August - Durham, 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").

Average snowfall days in August
Durham, IL

Average snowfall days in August - Durham, 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).

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

Average daylight in August / Average sunshine in August - Durham, 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).

Average sunshine days in August
Durham, IL

Average sunshine days in August - Durham, 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).

Average UV index in August
Durham, IL

Average UV index in August - Durham, 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).

Average cloud cover in August
Durham, IL

Average cloud cover in August - Durham, 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).

Average visibility in August
Durham, IL

Average visibility in August - Durham, 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).

Durham, Illinois, USA

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