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
Hardin, Illinois, in September undergoes a slight reduction in the average high-temperature, shifting from August's 84.6°F (29.2°C) to a still moderately hot 78.8°F (26°C). Hardin's nighttime temperature in September falls to an average of 59.2°F (15.1°C).Humidity
In Hardin, the average relative humidity in September is 74%.Rainfall
In September, in Hardin, the rain falls for 11.4 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. In Hardin, during the entire year, the rain falls for 130.3 days and collects up to 17.87" (454mm) of precipitation.Snowfall
April through October are months without snowfall in Hardin, Illinois.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Hardin, Illinois, sunrise is at 6:31 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:46 pm CDT.
Sunshine
The average sunshine in September is 9.6h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Act with care - The suggestion to avoid sunburn is emphasized. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Hardin in September?
What is the average humidity in September in Hardin?
How much does it rain in Hardin in September?
When it does not snow in Hardin?
How many hours of daylight does Hardin have in September?
When is the sunrise / sunset in September in Hardin?
How long on average sun shines in September in Hardin?
How high is the UV index in September in Hardin?
Average temperature in September
Hardin, IL
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is January (35.8°F).
- Average low temperature in September: 59.2°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Hardin, IL
- Average pressure in September: 30.02"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in September
Hardin, IL
- Average wind speed in September: 6.3mph
The windiest months (with the highest average wind speed) are January and February (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in September
Hardin, IL
- Average humidity in September: 74%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Hardin, IL
- Average rainfall in September: 1.3"
The wettest month (with the highest rainfall) is May (2.17").
The driest months (with the least rainfall) are January and February (0.83").
Average rainfall days in September
Hardin, IL
- Average rainfall days in September: 11.4 days
The month with the highest number of rainy days is July (15.2 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in September
Hardin, IL
- Average snowfall in September: 0"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Hardin, IL
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (6.6 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
Hardin, IL
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in September
Hardin, IL
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is December (20.9 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in September
Hardin, 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
Hardin, IL
- Average cloud cover in September: 29
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Hardin, IL
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Hardin, Illinois, USA
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