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 brings a slight decrease in temperature, down from a warm 81.5°F (27.5°C) in August to a still moderately hot 75.9°F (24.4°C). The temperature lowers to an average of 58.1°F (14.5°C) during September nights.Humidity
In Rossburg, the average relative humidity in September is 77%.Rainfall
The month with the least rainfall is September, when the rain falls for 14 days and typically collects 2.01" (51mm) of precipitation.Snowfall
In Rossburg, snow does not fall in May through September.Daylight
In Rossburg, the average length of the day in September is 12h and 26min.On the first day of September, sunrise is at 7:10 am and sunset at 8:11 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 7:24 pm EDT.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: In September, an average UV index of 4 transforms into the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much 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?
What time are sunrise and sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Rossburg, IN
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (34.5°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (22.3°F).
Average pressure in September
Rossburg, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Rossburg, IN
- Average wind speed in September: 6.1mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in September
Rossburg, IN
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (82%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Rossburg, IN
- Average rainfall in September: 2.01"
The wettest month (with the highest rainfall) is May (3.54").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in September
Rossburg, IN
- Average rainfall days in September: 14 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (8.4 days).
Average snowfall in September
Rossburg, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Rossburg, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Rossburg, IN
- 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: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Rossburg, IN
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is May (9.8 days).
Average UV index in September
Rossburg, IN
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Rossburg, IN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Rossburg, IN
- Average visibility in September: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Rossburg, Indiana, USA
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