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
The arrival of September brings an average high-temperature of a still moderately hot 74.3°F (23.5°C), closely following the temperature pattern of August. An average low-temperature of 55.9°F (13.3°C) is common during the nights of September.Humidity
The average relative humidity in September in America is 79%.Rainfall
In America, in September, during 12.9 rainfall days, 1.38" (35mm) of precipitation is typically accumulated. Throughout the year, there are 157.1 rainfall days, and 23.27" (591mm) of precipitation is accumulated.Snowfall
In America, snow does not fall in June through September.Daylight
In America, Indiana, the average length of the day in September is 12h and 27min.On the first day of the month, sunrise is at 7:10 am and sunset at 8:14 pm. On the last day of September, sunrise is at 7:39 am and sunset at 7:26 pm EDT.
Sunshine
In America, the average sunshine in September is 8.1h.UV index
In September, the average daily maximum UV index in America is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.Note: In September, the maximum UV index of 4 suggests these recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in America?
What is the average humidity in September in America?
How much does it rain in America in September?
When it does not snow in America?
Does it snow in America in September?
What is the average length of the day in September in America?
When is the sunrise / sunset in September in America?
How many hours of sunshine does America have in September?
What is the UV index intensity in September in America?
Average temperature in September
America, IN
- Average high temperature in September: 74.3°F
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 55.9°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 (19°F).
Average pressure in September
America, IN
- Average pressure in September: 30.03"Hg
The months with the highest atmospheric pressure are January and November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
America, 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
America, IN
- Average humidity in September: 79%
The months with the highest relative humidity are January, February, July, August and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
America, IN
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in September
America, IN
- Average rainfall days in September: 12.9 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (7 days).
Average snowfall in September
America, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
America, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
America, IN
- Average daylight in September: 12h and 3min
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 18min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in September
America, IN
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in September
America, IN
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
America, IN
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
America, IN
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, July, August and September (5mi).
America, Indiana, USA
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