September weather forecastL'Erable, IL
September
Weather in September
September, the first month of the autumn in L'Erable, is also a moderately hot month, with an average temperature ranging between max 75°F (23.9°C) and min 57.2°F (14°C).Temperature
September experiences an average high-temperature of a still warm 75°F (23.9°C), barely different from August's 79.5°F (26.4°C). September's nights observe an average temperature of 57.2°F (14°C).Humidity
In L'Erable, the average relative humidity in September is 77%.Rainfall
In L'Erable, during September, the rain falls for 11.9 days and regularly aggregates up to 1.65" (42mm) of precipitation. In L'Erable, Illinois, during the entire year, the rain falls for 138.6 days and collects up to 21.57" (548mm) of precipitation.Snowfall
In L'Erable, snow does not fall in May through September.Daylight
The average length of the day in September in L'Erable is 12h and 27min.On the first day of the month, sunrise is at 6:18 am and sunset at 7:23 pm. On the last day of September, sunrise is at 6:47 am and sunset at 6:34 pm CDT.
Sunshine
In L'Erable, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum UV index of 4 during September leads to these instructions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
L'Erable, IL
- Average high temperature in September: 75°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in September: 57.2°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in September
L'Erable, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
L'Erable, IL
- Average wind speed in September: 7.4mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
L'Erable, IL
- Average humidity in September: 77%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
L'Erable, IL
- Average rainfall in September: 1.65"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is December (0.87").
Average rainfall days in September
L'Erable, IL
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in September
L'Erable, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.48").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
L'Erable, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 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
L'Erable, IL
- Average daylight in September: 12h and 30min
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 September: 8h and 24min
The month with the most sunshine is June (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
L'Erable, IL
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in September
L'Erable, IL
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
L'Erable, IL
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are June and August (Cloud cover 34).
Average visibility in September
L'Erable, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
