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
A mild shift in the average high-temperature occurs in September in Flint, reducing from a warm 77.2°F (25.1°C) in August to an agreeable 71.1°F (21.7°C). In September, Flint records an average nighttime temperature of 52.7°F (11.5°C).Humidity
The average relative humidity in September is 80%.Rainfall
In Flint, in September, during 11.3 rainfall days, 0.87" (22mm) of precipitation is typically accumulated. Throughout the year, in Flint, there are 124.4 rainfall days, and 13.82" (351mm) of precipitation is accumulated.Snowfall
In Flint, Michigan, snow does not fall in May through September.Daylight
The average length of the day in September is 12h and 29min.On the first day of September in Flint, sunrise is at 7:00 am and sunset at 8:09 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 7:17 pm EDT.
Sunshine
In September, the average sunshine is 7.7h.UV index
The average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: A maximum UV index of 3 in September translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Flint?
What is the average humidity in September in Flint?
How much does it rain in Flint in September?
When it does not snow in Flint?
Does it snow in Flint in September?
What is the average length of the day in September in Flint?
When is the sunrise / sunset in September in Flint?
How long on average sun shines in September in Flint?
What is the UV index intensity in September in Flint?
Average temperature in September
Flint, MI
- Average high temperature in September: 71.1°F
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (27.1°F).
- Average low temperature in September: 52.7°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in September
Flint, MI
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Flint, MI
- Average wind speed in September: 7.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.5mph).
Average humidity in September
Flint, MI
- Average humidity in September: 80%
The months with the highest relative humidity are January and February (87%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Flint, MI
- Average rainfall in September: 0.87"
The wettest month (with the highest rainfall) is May (1.97").
The driest months (with the least rainfall) are February and December (0.67").
Average rainfall days in September
Flint, MI
- Average rainfall days in September: 11.3 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in September
Flint, MI
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Flint, MI
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13.8 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, MI
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in September
Flint, MI
- Average sunshine days in September: 16.9 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (12 days).
Average UV index in September
Flint, MI
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Flint, MI
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Flint, MI
- Average visibility in September: 5mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
Flint, Michigan, USA
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