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
September ushers in a minor alteration in Coatesville's climate, with the average high-temperature moving from August's moderately hot 81.1°F (27.3°C) to a still warm 74.8°F (23.8°C). Coatesville, in September, experiences an average temperature of 57.4°F (14.1°C) at night.Humidity
The average relative humidity in September in Coatesville is 80%.Rainfall
In Coatesville, Pennsylvania, during September, the rain falls for 11.5 days and regularly aggregates up to 1.38" (35mm) of precipitation. In Coatesville, during the entire year, the rain falls for 138.3 days and collects up to 19.76" (502mm) of precipitation.Snowfall
In Coatesville, Pennsylvania, snow does not fall in June through September.Daylight
In Coatesville, the average length of the day in September is 12h and 26min.On the first day of the month, sunrise is at 6:31 am and sunset at 7:34 pm. On the last day of September, in Coatesville, sunrise is at 6:59 am and sunset at 6:46 pm EDT.
Sunshine
In Coatesville, Pennsylvania, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Put precautions into practice - Protective measures against sun-induced damage are advised. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Frequently asked questions
What is the average September temperature in Coatesville?
What is the average humidity in September in Coatesville?
How much does it rain in Coatesville in September?
When it does not snow in Coatesville?
Does it snow in Coatesville in September?
How many hours of daylight does Coatesville have in September?
When are sunrise and sunset in September in Coatesville?
How many hours of sunshine does Coatesville have in September?
How high is the UV index in September in Coatesville?
Average temperature in September
Coatesville, PA
- Average high temperature in September: 74.8°F
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (35.6°F).
- Average low temperature in September: 57.4°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).
Average pressure in September
Coatesville, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Coatesville, PA
- Average wind speed in September: 5.7mph
The windiest months (with the highest average wind speed) are January, February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Coatesville, PA
- Average humidity in September: 80%
The months with the highest relative humidity are May and October (81%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Coatesville, PA
- Average rainfall in September: 1.38"
The wettest month (with the highest rainfall) is August (2.72").
The driest month (with the least rainfall) is February (1.14").
Average rainfall days in September
Coatesville, PA
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in September
Coatesville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.32").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Coatesville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Coatesville, PA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in September
Coatesville, PA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is July (12.4 days).
Average UV index in September
Coatesville, PA
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Coatesville, PA
- Average cloud cover in September: 40
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Coatesville, PA
- Average visibility in September: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).
Coatesville, Pennsylvania, USA
Weather forecast for your location
2. Allow the app to use your location
