Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
As August transitions into September, Lewis Corner records an average high-temperature of a warm 81.5°F (27.5°C), showing a gentle shift from the preceding month. Lewis Corner, during September nights, observes an average temperature of 61.7°F (16.5°C).Heat index
The heat index in September is computed to be a tropical 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Exposing to direct sunshine may enhance heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In September, the average relative humidity is 72%.Rainfall
The month with the least rainfall in Lewis Corner, Illinois, is September, when the rain falls for 11.1 days and typically collects 1.5" (38mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Lewis Corner is 12h and 25min.On the first day of the month, sunrise is at 6:25 am and sunset at 7:22 pm. On the last day of September, in Lewis Corner, sunrise is at 6:49 am and sunset at 6:38 pm CDT.
Sunshine
In Lewis Corner, the average sunshine in September is 9.6h.UV index
In September, the average daily maximum UV index in Lewis Corner is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 in September translates into these instructions:
Guard yourself - Precautionary measures against sun damage are advocated. Avoiding the Sun during its peak radiation time around midday is a healthy practice. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Frequently asked questions
What are September temperatures in Lewis Corner?
What is the average humidity in September in Lewis Corner?
What is the driest month in Lewis Corner?
How much does it rain in Lewis Corner in September?
When it does not snow in Lewis Corner?
How many hours of daylight does Lewis Corner have in September?
When are sunrise and sunset in September in Lewis Corner?
How many hours of sunshine does Lewis Corner have in September?
How high is the UV index in September in Lewis Corner?
Average temperature in September
Lewis Corner, IL
- Average high temperature in September: 81.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.4°F).
- Average low temperature in September: 61.7°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in September
Lewis Corner, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Lewis Corner, IL
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in September
Lewis Corner, IL
- Average humidity in September: 72%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Lewis Corner, IL
- Average rainfall in September: 1.5"
The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in September
Lewis Corner, IL
- Average rainfall days in September: 11.1 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is October (10.2 days).
Average snowfall in September
Lewis Corner, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Lewis Corner, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lewis Corner, IL
- Average daylight in September: 12h and 2min
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 September: 9h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in September
Lewis Corner, IL
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is October (19.3 days).
The month with the least sunshine days is May (11 days).
Average UV index in September
Lewis Corner, IL
- Average UV index in September: 5
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).
Average cloud cover in September
Lewis Corner, IL
- Average cloud cover in September: 26
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is September (Cloud cover 26).
Average visibility in September
Lewis Corner, IL
- Average visibility in September: 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).
Lewis Corner, Illinois, USA
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