September weather forecastFlint, IN
September
Weather in September
September, the first month of the autumn in Flint, is also an agreeable month, with an average temperature varying between 54.3°F (12.4°C) and 72.5°F (22.5°C).Temperature
The transition into September reveals an average high-temperature of a pleasant 72.5°F (22.5°C), mirroring a close resemblance to August. During September, the average low-temperature is a cool 54.3°F (12.4°C).Humidity
In September, the average relative humidity is 80%.Rainfall
In Flint, during September, the rain falls for 13.2 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 160.1 rainfall days, and 27.8" (706mm) of precipitation is accumulated.Snowfall
In Flint, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:13 pm. On the last day of September, in Flint, sunrise is at 7:37 am and sunset at 7:23 pm EDT.
Sunshine
The average sunshine in September is 7.9h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Guard yourself - Avoiding sunburn is suggested. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Flint, IN
- Average high temperature in September: 72.5°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in September: 54.3°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in September
Flint, IN
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Flint, IN
- Average wind speed in September: 7.2mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in September
Flint, IN
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are March, April and October (77%).
Average rainfall in September
Flint, IN
- Average rainfall in September: 1.81"
The wettest months (with the highest rainfall) are April and May (3.54").
The driest month (with the least rainfall) is December (1.54").
Average rainfall days in September
Flint, IN
- Average rainfall days in September: 13.2 days
The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Flint, IN
- Average snowfall in September: 0"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Flint, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Flint, 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 12min).
- Average sunshine in September: 7h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Flint, IN
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is September (14.9 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in September
Flint, IN
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Flint, IN
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 33).
Average visibility in September
Flint, IN
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are January, February, August and September (5mi).





