September weather forecastElgin, IL
September
Weather in September
September in Elgin observes the onset of fall. As summer dissipates, autumn takes its course with milder temperatures and sporadically raining skies. The vivid green nature backdrop starts to transform into a kaleidoscope of fall colors. Although the city bids farewell to the warm summer days, residents welcome this change as a sign of the changing seasons and the quaint charm that comes along.Temperature
With the onset of September, the average high-temperature subtly recedes from August's warm 79°F (26.1°C) to an agreeable 73°F (22.8°C). Elgin throughout September, records an average low-temperature of 55.9°F (13.3°C).Humidity
In September, the average relative humidity is 78%.Rainfall
In September, the rain falls for 12.5 days. Throughout September, 1.69" (43mm) of precipitation is accumulated. In Elgin, during the entire year, the rain falls for 149.2 days and collects up to 24.02" (610mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:19 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:35 pm CDT.
Sunshine
The average sunshine in September is 8.7h.UV index
In Elgin, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, the maximum UV index of 4 translates into these guidelines:
Take precautions - Protection against sunburn is recommended. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Elgin, IL
- Average high temperature in September: 73°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in September: 55.9°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in September
Elgin, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Elgin, IL
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in September
Elgin, IL
- Average humidity in September: 78%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Elgin, IL
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in September
Elgin, IL
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in September
Elgin, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Elgin, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Elgin, IL
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 42min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Elgin, IL
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in September
Elgin, IL
- Average UV index in September: 4
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Elgin, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in September
Elgin, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
