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
As September takes hold, the average high-temperature is a still warm 76.1°F (24.5°C), nearly mirroring that of the previous month. Nighttime temperature in Coatesville experiences an average drop to a refreshing 57.7°F (14.3°C) in September.Humidity
In Coatesville, the average relative humidity in September is 78%.Rainfall
In September, in Coatesville, the rain falls for 11.5 days. Throughout September, 1.57" (40mm) of precipitation is accumulated. Throughout the year, there are 148.1 rainfall days, and 25.43" (646mm) of precipitation is accumulated.Snowfall
In Coatesville, snow does not fall in May through October.Daylight
In September, the average length of the day is 12h and 26min.On the first day of September, sunrise is at 7:15 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 7:42 am and sunset at 7:30 pm EDT.
Sunshine
In Coatesville, the average sunshine in September is 8.4h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: In September, the maximum UV index of 5 transforms into these recommendations:
Ensure safety - Recommendations to avert sunburn are presented. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Coatesville in September?
What is the average humidity in September in Coatesville?
How many days does it rain in September in Coatesville?
When it does not snow in Coatesville?
How many hours of daylight does Coatesville have in September?
When is the sunrise / sunset in September in Coatesville?
How many hours of sunshine does Coatesville have in September?
What is the UV index intensity in September in Coatesville?
Average temperature in September
Coatesville, IN
- Average high temperature in September: 76.1°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (34.2°F).
- Average low temperature in September: 57.7°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Coatesville, 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
Coatesville, IN
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in September
Coatesville, IN
- Average humidity in September: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in September
Coatesville, IN
- Average rainfall in September: 1.57"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is February (1.5").
Average rainfall days in September
Coatesville, IN
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in September
Coatesville, IN
- Average snowfall in September: 0"
The month with the highest snowfall is December (2.24").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Coatesville, IN
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Coatesville, 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 24min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in September
Coatesville, IN
- Average sunshine days in September: 16 days
The month with the most sunshine days is October (19.2 days).
The month with the least sunshine days is May (9.3 days).
Average UV index in September
Coatesville, IN
- Average UV index in September: 5
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Coatesville, IN
- Average cloud cover in September: 33
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
Coatesville, IN
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Coatesville, Indiana, USA
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