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 onset of September marks an average high-temperature of a still warm 73.8°F (23.2°C), hardly differing from August's 79°F (26.1°C). Shabbona experiences a steady low-temperature of 55.4°F (13°C) throughout September.Humidity
The average relative humidity in September is 79%.Rainfall
In Shabbona, during September, the rain falls for 13.8 days and regularly aggregates up to 2.4" (61mm) of precipitation. In Shabbona, Illinois, during the entire year, the rain falls for 162.1 days and collects up to 33.54" (852mm) of precipitation.Snowfall
In Shabbona, snow does not fall in May through September.Daylight
In Shabbona, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:22 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 6:52 am and sunset at 6:38 pm CDT.
Sunshine
The average sunshine in September is 8.7h.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 the average person.Note: The UV index of 4 during September leads to these advisories:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Shabbona have in September?
What is the UV index reading in September?
Average temperature in September
Shabbona, IL
- Average high temperature in September: 73.8°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 (27.5°F).
- Average low temperature in September: 55.4°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in September
Shabbona, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in September
Shabbona, IL
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in September
Shabbona, IL
- Average humidity in September: 79%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Shabbona, IL
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in September
Shabbona, IL
- Average rainfall days in September: 13.8 days
The months with the highest number of rainy days are June and July (19.3 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in September
Shabbona, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.61").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Shabbona, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Shabbona, IL
- Average daylight in September: 12h and 3min
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 4min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Shabbona, IL
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in September
Shabbona, IL
- Average UV index in September: 4
The months with the highest UV index are June and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Shabbona, IL
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 34).
Average visibility in September
Shabbona, IL
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Shabbona, Illinois, USA
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