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
Stockton's September weather shows a modest shift in high-temperatures, falling from August's warm 78.4°F (25.8°C) to a pleasant 72.9°F (22.7°C). In September, Stockton experiences a temperature dip to an average of 53.8°F (12.1°C) at night.Humidity
In Stockton, the average relative humidity in September is 80%.Rainfall
In Stockton, Illinois, in September, it is raining for 11.8 days, with typically 2.4" (61mm) of accumulated precipitation. Throughout the year, in Stockton, there are 142 rainfall days, and 27.95" (710mm) of precipitation is accumulated.Snowfall
In Stockton, Illinois, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September, sunrise is at 6:26 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:56 am and sunset at 6:42 pm CDT.
Sunshine
In Stockton, the average sunshine in September is 8.8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 4 during September translates into the following directions:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Stockton?
What is the average humidity in September in Stockton?
How much does it rain in Stockton in September?
When it does not snow in Stockton?
Does it snow in Stockton in September?
What is the average length of the day in September in Stockton?
When is the sunrise / sunset in September in Stockton?
How many hours of sunshine does Stockton have in September?
What is the UV index reading in September in Stockton?
Average temperature in September
Stockton, IL
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in September: 53.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).
Average pressure in September
Stockton, 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 (29.91"Hg).
Average wind speed in September
Stockton, IL
- Average wind speed in September: 7.6mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in September
Stockton, IL
- Average humidity in September: 80%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Stockton, IL
- Average rainfall in September: 2.4"
The wettest months (with the highest rainfall) are May and June (3.66").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days in September
Stockton, IL
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in September
Stockton, IL
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Stockton, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Stockton, 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 6min).
- Average sunshine in September: 8h and 5min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Stockton, IL
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.2 days).
Average UV index in September
Stockton, IL
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Stockton, IL
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in September
Stockton, IL
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Stockton, Illinois, USA
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