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
The advent of September brings a slight shift in average high-temperature, moving from a tropical 86.5°F (30.3°C) in August to a warm 81°F (27.2°C). An average nighttime temperature of 60.6°F (15.9°C) is noted in Wolf Lake during the month of September.Heat index
In September, the heat index is estimated at 84.2°F (29°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.It is crucial to understand that heat index figures are for shade and gentle wind conditions. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a composite of temperature and humidity figures to convey how warm it feels. Depending on the activity and the individual's heat perception, which may vary due to factors including wind, clothing, and metabolic variations, this effect remains subjective. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In September, the average relative humidity in Wolf Lake is 73%.Rainfall
The month with the least rainfall is September, when the rain falls for 10.8 days and typically collects 1.3" (33mm) of precipitation.Snowfall
In Wolf Lake, Illinois, snow does not fall in May through September.Daylight
In Wolf Lake, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:28 am and sunset at 7:26 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:41 pm CDT.
Sunshine
The average sunshine in September in Wolf Lake is 9.5h.UV index
The average daily maximum UV index in September in Wolf Lake is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the average person.Note: A typical high UV index of 5 in September suggests the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Around midday, solar radiation is most harmful; hence, exposure should be limited. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
Frequently asked questions
What are September temperatures in Wolf Lake?
What is the average humidity in September in Wolf Lake?
What is the driest month in Wolf Lake?
How much does it rain in Wolf Lake in September?
When it does not snow in Wolf Lake?
Does it snow in Wolf Lake in September?
How many hours of daylight does Wolf Lake have in September?
What time are sunrise and sunset in September in Wolf Lake?
How long on average sun shines in September in Wolf Lake?
How high is the UV index in September in Wolf Lake?
Average temperature in September
Wolf Lake, IL
- Average high temperature in September: 81°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 (39.7°F).
- Average low temperature in September: 60.6°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in September
Wolf Lake, IL
- Average pressure in September: 30.02"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 September
Wolf Lake, IL
- Average wind speed in September: 6.2mph
The windiest month (with the highest average wind speed) is January (9mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).
Average humidity in September
Wolf Lake, IL
- Average humidity in September: 73%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Wolf Lake, IL
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is April (3.31").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in September
Wolf Lake, IL
- Average rainfall days in September: 10.8 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in September
Wolf Lake, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Wolf Lake, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Wolf Lake, 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 3min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in September
Wolf Lake, IL
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is October (21 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in September
Wolf Lake, 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
Wolf Lake, IL
- Average cloud cover in September: 28
The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is September (Cloud cover 28).
Average visibility in September
Wolf Lake, 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).
Wolf Lake, Illinois, USA
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