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
August's weather records an average high-temperature of a still warm 82.9°F (28.3°C), showing little deviation from July. Throughout the month of August, Saint Francisville expects an average low of 65.7°F (18.7°C).Heat index
August's mean heat index is estimated at a hot 91.4°F (33°C). Ensure extra safety steps, heat exhaustion and heat cramps are likely. Long activity might lead to heatstroke.It is crucial to understand that heat index figures are for shade and gentle wind conditions. A direct sunlight exposure may boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', determines the feeling of heat when you account for the relative humidity. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. When directly under the sun, the weather's impact can intensify, possibly boosting the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
Humidity
In August, the average relative humidity is 79%.Rainfall
In Saint Francisville, in August, during 7.5 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, there are 89 rainfall days, and 7.6" (193mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall in Saint Francisville.Daylight
In Saint Francisville, the average length of the day in August is 13h and 37min.On the first day of the month, sunrise is at 5:52 am and sunset at 8:00 pm. On the last day of August, in Saint Francisville, Illinois, sunrise is at 6:19 am and sunset at 7:21 pm CDT.
Sunshine
In Saint Francisville, the average sunshine in August is 9.3h.UV index
June through August, with an average maximum UV index of 6, are months with the highest UV index in Saint Francisville. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 6 in August translates into these instructions:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Avoid exposure to the Sun and try to stay in the shade between 10 a.m. and 4 p.m., when UV radiation is most potent, but be aware that parasols or canopies may not offer full protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
How hot is it in Saint Francisville in August?
What is the average humidity in August in Saint Francisville?
How many days does it rain in August in Saint Francisville?
When it does not snow in Saint Francisville?
What is the average length of the day in August in Saint Francisville?
When are sunrise and sunset in August in Saint Francisville?
How long on average sun shines in August in Saint Francisville?
When is the highest UV index in Saint Francisville?
How high is the UV index in August in Saint Francisville?
Average temperature in August
Saint Francisville, IL
- Average high temperature in August: 82.9°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in August: 65.7°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (24.4°F).
Average pressure in August
Saint Francisville, IL
- Average pressure in August: 29.99"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).
Average wind speed in August
Saint Francisville, IL
- Average wind speed in August: 5.9mph
The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in August
Saint Francisville, IL
- Average humidity in August: 79%
The month with the highest relative humidity is July (81%).
The month with the lowest relative humidity is October (70%).
Average rainfall in August
Saint Francisville, IL
- Average rainfall in August: 0.59"
The wettest month (with the highest rainfall) is April (0.91").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in August
Saint Francisville, IL
- Average rainfall days in August: 7.5 days
The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (4.9 days).
Average snowfall in August
Saint Francisville, IL
- Average snowfall in August: 0"
The month with the highest snowfall is March (0.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in August
Saint Francisville, IL
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is February (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in August /
Average sunshine in August
Saint Francisville, IL
- Average daylight in August: 13h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in August: 9h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 30min).
Average sunshine days in August
Saint Francisville, IL
- Average sunshine days in August: 20.2 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (16.9 days).
Average UV index in August
Saint Francisville, 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
Saint Francisville, IL
- Average cloud cover in August: 28
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in August
Saint Francisville, 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).
Saint Francisville, Illinois, USA
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