Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
Old Saint Louis commences August with an average high-temperature of a still moderately hot 82.8°F (28.2°C), maintaining a close resemblance to the previous month. Throughout August, the nighttime temperature averages to a comfortable 63.3°F (17.4°C).Heat index
In August, the heat index is calculated to be a hot 89.6°F (32°C). If exposure and activity persist, fatigue could ensue, possibly leading to heat cramps.In reference to the heat index, it's for places in shade and with a slight wind. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', is a measure of how hot it feels when the actual air humidity is factored in. Additional elements encompassing metabolic differences, the degree of physical activity, and attire can impact the individual's perception of temperature. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young individuals usually face greater risks than adults as their sweat production is less. Also, their larger skin surface relative to their small bodies and the high heat generation due to their activity contributes to their vulnerability.
Humidity
In Old Saint Louis, Indiana, the average relative humidity in August is 79%.Rainfall
In Old Saint Louis, in August, it is raining for 14.6 days, with typically 2.05" (52mm) of accumulated precipitation. In Old Saint Louis, Indiana, during the entire year, the rain falls for 163.5 days and collects up to 29.29" (744mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In August, the average length of the day in Old Saint Louis is 13h and 40min.On the first day of the month, sunrise is at 6:43 am and sunset at 8:55 pm. On the last day of August, sunrise is at 7:11 am and sunset at 8:15 pm EDT.
Sunshine
In Old Saint Louis, the average sunshine in August is 9.6h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Old Saint Louis. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during August leads to these advisories:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is most intense, and remember that not all shade structures provide full protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How hot is it in Old Saint Louis in August?
What is the average humidity in August in Old Saint Louis?
How much does it rain in Old Saint Louis in August?
When it does not snow in Old Saint Louis?
What is the average length of the day in August in Old Saint Louis?
When are sunrise and sunset in August in Old Saint Louis?
How many hours of sunshine does Old Saint Louis have in August?
When is the highest UV index in Old Saint Louis?
How high is the UV index in August in Old Saint Louis?
Average temperature in August
Old Saint Louis, IN
- Average high temperature in August: 82.8°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in August: 63.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in August
Old Saint Louis, IN
- 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
Old Saint Louis, IN
- Average wind speed in August: 5.3mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in August
Old Saint Louis, IN
- Average humidity in August: 79%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in August
Old Saint Louis, IN
- Average rainfall in August: 2.05"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in August
Old Saint Louis, IN
- Average rainfall days in August: 14.6 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in August
Old Saint Louis, IN
- Average snowfall in August: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in August
Old Saint Louis, IN
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (9.6 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
Old Saint Louis, IN
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 9h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in August
Old Saint Louis, IN
- Average sunshine days in August: 13.6 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in August
Old Saint Louis, IN
- 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
Old Saint Louis, IN
- Average cloud cover in August: 29
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in August
Old Saint Louis, IN
- Average visibility in August: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).
Old Saint Louis, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location