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
Langhorne's progression into September involves a minor drop in the average high-temperature, slightly receding from 83.1°F (28.4°C) in August to a still moderately hot 76.5°F (24.7°C). Throughout September, an average low-temperature of 59.9°F (15.5°C) is expected.Humidity
In September, the average relative humidity is 76%.Rainfall
In Langhorne, in September, it is raining for 12.7 days, with typically 1.93" (49mm) of accumulated precipitation. In Langhorne, during the entire year, the rain falls for 154.4 days and collects up to 31.38" (797mm) of precipitation.Snowfall
June through October are months without snowfall.Daylight
In September, the average length of the day in Langhorne is 12h and 27min.On the first day of September, sunrise is at 6:27 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:43 pm EDT.
Sunshine
The average sunshine in September in Langhorne is 8.8h.UV index
In September, the average daily maximum UV index in Langhorne is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Frequently asked questions
What are the temperatures in Langhorne in September?
What is the average humidity in September in Langhorne?
How much does it rain in Langhorne in September?
When it does not snow in Langhorne?
What is the average length of the day in September in Langhorne?
When are sunrise and sunset in September in Langhorne?
How long on average sun shines in September in Langhorne?
What is the UV index reading in September in Langhorne?
Average temperature in September
Langhorne, PA
- Average high temperature in September: 76.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (37°F).
- Average low temperature in September: 59.9°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).
Average pressure in September
Langhorne, PA
- Average pressure in September: 30.05"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
Langhorne, PA
- Average wind speed in September: 6mph
The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).
Average humidity in September
Langhorne, PA
- Average humidity in September: 76%
The months with the highest relative humidity are February and October (78%).
The month with the lowest relative humidity is April (72%).
Average rainfall in September
Langhorne, PA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is January (1.89").
Average rainfall days in September
Langhorne, PA
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8 days).
Average snowfall in September
Langhorne, PA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.99").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in September
Langhorne, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Langhorne, 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 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in September
Langhorne, PA
- Average sunshine days in September: 14.9 days
The month with the most sunshine days is November (20.6 days).
The month with the least sunshine days is July (9.9 days).
Average UV index in September
Langhorne, 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, November and December (UV index 2).
Average cloud cover in September
Langhorne, PA
- Average cloud cover in September: 37
The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Langhorne, PA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
Langhorne, Pennsylvania, USA
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