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
September's arrival brings an average high-temperature of a still moderately hot 76.1°F (24.5°C), slightly deviating from August's 80.6°F (27°C). During September, Fithian consistently records a temperature low averaging a moderate 57.7°F (14.3°C).Humidity
In September, the average relative humidity is 77%.Rainfall
The months with the least rainfall are February and September Rain falls for 12.5 days and accumulates 1.38" (35mm) of rain.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:19 am and sunset at 7:22 pm. On the last day of September, in Fithian, sunrise is at 6:47 am and sunset at 6:34 pm CDT.
Sunshine
The average sunshine in September is 8.8h.UV index
In September, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index, 5 during September, leads to the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. 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
What is the temperature in September in Fithian?
What is the average humidity in September in Fithian?
What is the driest month in Fithian?
How much does it rain in Fithian in September?
When it does not snow in Fithian?
What is the average length of the day in September in Fithian?
What time are sunrise and sunset in September in Fithian?
How many hours of sunshine does Fithian have in September?
What is the UV index intensity in September in Fithian?
Average temperature in September
Fithian, IL
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in September
Fithian, IL
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Fithian, IL
- Average wind speed in September: 7.1mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in September
Fithian, IL
- Average humidity in September: 77%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in September
Fithian, IL
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is April (3.23").
The driest months (with the least rainfall) are February and September (1.38").
Average rainfall days in September
Fithian, IL
- Average rainfall days in September: 12.5 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (6.6 days).
Average snowfall in September
Fithian, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Fithian, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.6 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
Fithian, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Fithian, IL
- Average sunshine days in September: 15.2 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in September
Fithian, IL
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Fithian, IL
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in September
Fithian, 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).
Fithian, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location