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 reveals a small adjustment in temperature, transitioning from an average high of a warm 81.9°F (27.7°C) in August to a still moderately hot 75.4°F (24.1°C). Throughout September nights, Twilight experiences a consistent temperature average of 55°F (12.8°C).Humidity
In Twilight, the average relative humidity in September is 78%.Rainfall
In Twilight, in September, during 14.3 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. In Twilight, during the entire year, the rain falls for 191.3 days and collects up to 35.24" (895mm) of precipitation.Snowfall
In Twilight, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 26min.On the first day of September in Twilight, sunrise is at 6:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:15 am and sunset at 7:02 pm EDT.
Sunshine
In Twilight, the average sunshine in September is 8.7h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What are the temperatures in Twilight in September?
What is the average humidity in September in Twilight?
How much does it rain in Twilight in September?
When it does not snow in Twilight?
Does it snow in Twilight in September?
How many hours of daylight does Twilight have in September?
What time are sunrise and sunset in September in Twilight?
How many hours of sunshine does Twilight have in September?
What is the UV index reading in September in Twilight?
Average temperature in September
Twilight, PA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34°F).
- Average low temperature in September: 55°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in September
Twilight, PA
- Average pressure in September: 30.05"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in September
Twilight, PA
- Average wind speed in September: 5mph
The windiest month (with the highest average wind speed) is January (7.9mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Twilight, PA
- Average humidity in September: 78%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Twilight, PA
- Average rainfall in September: 2.4"
The wettest month (with the highest rainfall) is May (3.78").
The driest month (with the least rainfall) is November (2.13").
Average rainfall days in September
Twilight, PA
- Average rainfall days in September: 14.3 days
The month with the highest number of rainy days is May (21.8 days).
The months with the least rainy days are January and February (11.7 days).
Average snowfall in September
Twilight, PA
- Average snowfall in September: 0"
The month with the highest snowfall is January (6.26").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Twilight, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Twilight, 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 August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in September
Twilight, PA
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (14.3 days).
The month with the least sunshine days is January (6.8 days).
Average UV index in September
Twilight, PA
- Average UV index in September: 4
The months with the highest UV index are May, June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in September
Twilight, PA
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Twilight, PA
- Average visibility in September: 5mi
The months with the highest visibility are April, August and November (6mi).
The months with the lowest visibility are January and February (4mi).
Twilight, Pennsylvania, USA
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