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 average high-temperature during September registers at a pleasant 72.1°F (22.3°C), maintaining a close resemblance to the previous month. September brings with it a nighttime average temperature of 58.3°F (14.6°C) in Flat Rock.Humidity
The average relative humidity in September is 78%.Rainfall
In Flat Rock, in September, it is raining for 14.9 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 176.1 rainfall days, and 31.46" (799mm) of precipitation is accumulated.Snowfall
June through September are months without snowfall.Daylight
In Flat Rock, the average length of the day in September is 12h and 28min.On the first day of the month, sunrise is at 6:58 am and sunset at 8:03 pm. On the last day of September, sunrise is at 7:27 am and sunset at 7:14 pm EDT.
Sunshine
The average sunshine in September is 8.1h.UV index
In Flat Rock, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Flat Rock in September?
What is the average humidity in September?
How many days 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 in Flat Rock?
What time are sunrise and sunset in September?
How long on average sun shines in September?
How high is the UV index in September?
Average temperature in September
Flat Rock, OH
- Average high temperature in September: 72.1°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in September
Flat Rock, OH
- Average pressure in September: 30.04"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Flat Rock, OH
- Average wind speed in September: 7.8mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
Flat Rock, OH
- Average humidity in September: 78%
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in September
Flat Rock, OH
- Average rainfall in September: 2.36"
The wettest month (with the highest rainfall) is June (3.66").
The driest month (with the least rainfall) is February (1.73").
Average rainfall days in September
Flat Rock, OH
- Average rainfall days in September: 14.9 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Flat Rock, OH
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Flat Rock, OH
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (14.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Flat Rock, OH
- Average daylight in September: 12h and 3min
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 1min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in September
Flat Rock, OH
- Average sunshine days in September: 13.1 days
The month with the most sunshine days is November (13.5 days).
The month with the least sunshine days is February (8.8 days).
Average UV index in September
Flat Rock, OH
- 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
Flat Rock, OH
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility in September
Flat Rock, OH
- Average visibility in September: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Flat Rock, Ohio, USA
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