August weather forecastKirkwood, IL
August
Weather in August
The last month of the summer, August, is another warm month in Kirkwood, Illinois, with an average temperature varying between 81.1°F (27.3°C) and 63.3°F (17.4°C).Temperature
August notes an average high-temperature of a still warm 81.1°F (27.3°C), subtly differing from July's 82°F (27.8°C). In August, Kirkwood records an average nighttime temperature of 63.3°F (17.4°C).Heat index
In August, the heat index is computed to be a hot 86°F (30°C). With sustained exposure and activity, exhaustion becomes probable, resulting in heat cramps.The standards for the heat index are set for locations in shade and under light breezes. Facing direct sunlight may hike up the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is subjective, differing among individuals based on their physical activity and perception of heat, which can be influenced by factors like wind, clothing, and metabolic variances. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are especially vital to children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
Humidity
In Kirkwood, the average relative humidity in August is 80%.Rainfall
In Kirkwood, in August, it is raining for 14 days, with typically 2.13" (54mm) of accumulated precipitation. In Kirkwood, during the entire year, the rain falls for 149.4 days and collects up to 30.16" (766mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Kirkwood, the average length of the day in August is 13h and 45min.On the first day of August in Kirkwood, sunrise is at 6:00 am and sunset at 8:18 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:36 pm CDT.
Sunshine
In Kirkwood, the average sunshine in August is 9.8h.UV index
In Kirkwood, Illinois, the average daily maximum UV index in August is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for average individuals.Note: The maximum UV index of 5 during August leads to these instructions:
Act with care - The need to guard against sun damage is communicated. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Kirkwood, IL
- Average high temperature in August: 81.1°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.7°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.6°F).
Average pressure in August
Kirkwood, IL
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in August
Kirkwood, IL
- Average wind speed in August: 6.8mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity in August
Kirkwood, IL
- Average humidity in August: 80%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Kirkwood, IL
- Average rainfall in August: 2.13"
The wettest month (with the highest rainfall) is May (4.25").
The driest month (with the least rainfall) is January (1.46").
Average rainfall days in August
Kirkwood, IL
- Average rainfall days in August: 14 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in August
Kirkwood, IL
- Average snowfall in August: 0"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in August
Kirkwood, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (10.9 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
Kirkwood, IL
- Average daylight in August: 13h and 48min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Kirkwood, IL
- Average sunshine days in August: 13.8 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in August
Kirkwood, IL
- Average UV index in August: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in August
Kirkwood, IL
- Average cloud cover in August: 30
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in August
Kirkwood, IL
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
