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
With the onset of September, Lawrenceville experiences a modest temperature adjustment, with the average high-temperature gently receding from a warm 76.6°F (24.8°C) in August to a pleasant 69.8°F (21°C). In Lawrenceville, the average low-temperature during the month of September is a frosty 49.8°F (9.9°C).Humidity
In Lawrenceville, Pennsylvania, the average relative humidity in September is 81%.Rainfall
In Lawrenceville, Pennsylvania, in September, it is raining for 13.7 days, with typically 2.13" (54mm) of accumulated precipitation. In Lawrenceville, during the entire year, the rain falls for 176.1 days and collects up to 28.74" (730mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Lawrenceville, the average length of the day in September is 12h and 28min.On the first day of September, sunrise is at 6:34 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:51 pm EDT.
Sunshine
In September, the average sunshine is 8.5h.UV index
In September, the average daily maximum UV index is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 3 in September, converts into the following recommendations:
Take necessary precautions - Defending against sun damage is advocated. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature?
What is the average humidity in September in Lawrenceville?
How much does it rain in September?
When it does not snow?
Does it snow in September?
How many hours of daylight does Lawrenceville have in September?
When is the sunrise / sunset in September?
How many hours of sunshine does Lawrenceville have in September?
What is the UV index intensity in September?
Average temperature in September
Lawrenceville, PA
- Average high temperature in September: 69.8°F
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in September: 49.8°F
The month with the highest average low temperature is July (57.2°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in September
Lawrenceville, PA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in September
Lawrenceville, PA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in September
Lawrenceville, PA
- Average humidity in September: 81%
The month with the highest relative humidity is February (86%).
The months with the lowest relative humidity are April, May and June (78%).
Average rainfall in September
Lawrenceville, PA
- Average rainfall in September: 2.13"
The wettest month (with the highest rainfall) is July (2.99").
The driest month (with the least rainfall) is November (1.81").
Average rainfall days in September
Lawrenceville, PA
- Average rainfall days in September: 13.7 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in September
Lawrenceville, PA
- Average snowfall in September: 0"
The month with the highest snowfall is February (8.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Lawrenceville, PA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lawrenceville, PA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The months with the least sunshine are January, February and December (Average sunshine: 3h and 12min).
Average sunshine days in September
Lawrenceville, PA
- Average sunshine days in September: 14.2 days
The month with the most sunshine days is September (14.2 days).
The month with the least sunshine days is February (6.9 days).
Average UV index in September
Lawrenceville, PA
- Average UV index in September: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in September
Lawrenceville, PA
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 70).
The months with the least cloud cover are July and August (Cloud cover 38).
Average visibility in September
Lawrenceville, PA
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Lawrenceville, Pennsylvania, USA
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