September weather forecastTwelve Mile, IN
September
Weather in September
The first month of the autumn, September, is still a warm month in Twelve Mile, Indiana, with temperature in the range of an average low of 56.5°F (13.6°C) and an average high of 74.8°F (23.8°C).Temperature
Twelve Mile's September average high-temperature settles at a still moderately hot 74.8°F (23.8°C), showing a near match with the preceding month. During September, the temperature tends to dip to an average of 56.5°F (13.6°C) at night.Humidity
In Twelve Mile, the average relative humidity in September is 79%.Rainfall
In Twelve Mile, in September, it is raining for 11.6 days, with typically 1.14" (29mm) of accumulated precipitation. Throughout the year, there are 142.7 rainfall days, and 18.7" (475mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Twelve Mile, Indiana, is 12h and 27min.On the first day of September, sunrise is at 7:12 am and sunset at 8:16 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:28 pm EDT.
Sunshine
The average sunshine in September in Twelve Mile is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Undertake protective steps - Recommendations to avoid sunburn are issued. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Twelve Mile, IN
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.7°F).
- Average low temperature in September: 56.5°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure in September
Twelve Mile, IN
- 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 (29.93"Hg).
Average wind speed in September
Twelve Mile, IN
- Average wind speed in September: 7mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in September
Twelve Mile, IN
- Average humidity in September: 79%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in September
Twelve Mile, IN
- Average rainfall in September: 1.14"
The wettest month (with the highest rainfall) is May (2.48").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in September
Twelve Mile, IN
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is January (6.1 days).
Average snowfall in September
Twelve Mile, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Twelve Mile, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Twelve Mile, IN
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 8h and 12min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in September
Twelve Mile, IN
- Average sunshine days in September: 15.5 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Twelve Mile, IN
- Average UV index in September: 4
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Twelve Mile, IN
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are June, July, August and September (Cloud cover 34).
Average visibility in September
Twelve Mile, IN
- 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).
