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 beginning of September brings a minor change in the average high-temperature, shifting from 82.8°F (28.2°C) in August to a still moderately hot 77°F (25°C). In September, Flat Rock Park encounters an average low-temperature of 58.3°F (14.6°C) during the night.Humidity
In September, the average relative humidity is 76%.Rainfall
September is the month with the least rainfall in Flat Rock Park. Rain falls for 14.1 days and accumulates 1.73" (44mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September in Flat Rock Park, sunrise is at 7:12 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 7:39 am and sunset at 7:27 pm EDT.
Sunshine
In Flat Rock Park, the average sunshine in September is 8.4h.UV index
The average daily maximum UV index in September in Flat Rock Park is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The UV index of 5 during September translates into the following guidance:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What is the usual temperature for Flat Rock Park in September?
What is the average humidity in September in Flat Rock Park?
What is the driest month in Flat Rock Park?
How much does it rain in Flat Rock Park in September?
When it does not snow in Flat Rock Park?
What is the average length of the day in September in Flat Rock Park?
What time are sunrise and sunset in September in Flat Rock Park?
How long on average sun shines in September in Flat Rock Park?
What is the UV index reading in September in Flat Rock Park?
Average temperature in September
Flat Rock Park, IN
- Average high temperature in September: 77°F
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in September: 58.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (22.5°F).
Average pressure in September
Flat Rock Park, IN
- Average pressure in September: 30.03"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Flat Rock Park, IN
- Average wind speed in September: 5.9mph
The windiest months (with the highest average wind speed) are January and February (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.3mph).
Average humidity in September
Flat Rock Park, IN
- Average humidity in September: 76%
The months with the highest relative humidity are January, February, July and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Flat Rock Park, IN
- Average rainfall in September: 1.73"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in September
Flat Rock Park, IN
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (9.4 days).
Average snowfall in September
Flat Rock Park, IN
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Flat Rock Park, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Flat Rock Park, IN
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Flat Rock Park, IN
- Average sunshine days in September: 13.8 days
The month with the most sunshine days is October (17.7 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Flat Rock Park, IN
- Average UV index in September: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Flat Rock Park, IN
- Average cloud cover in September: 32
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Flat Rock Park, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are July and December (5mi).
Flat Rock Park, Indiana, USA
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