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
The transition into September involves a small decrease in the average high-temperature, dipping slightly from a hot 86°F (30°C) in August to a warm 79.5°F (26.4°C). In the month of September, the average low-temperature in Lancaster usually rests at a refreshing 63°F (17.2°C).Humidity
In Lancaster, the average relative humidity in September is 77%.Rainfall
September is the month with the least rainfall. Rain falls for 11.9 days and accumulates 1.93" (49mm) of precipitation.Snowfall
In Lancaster, snow does not fall in May through October.Daylight
The average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:34 pm. On the last day of September, in Lancaster, sunrise is at 7:01 am and sunset at 6:50 pm EDT.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In September, an average UV index of 5 transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures?
What is the average humidity in September?
What is the driest month?
How much does it rain in September?
When it does not snow?
How many hours of daylight does Lancaster have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September?
What is the UV index intensity in September?
Average temperature in September
Lancaster, VA
- Average high temperature in September: 79.5°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (43.5°F).
- Average low temperature in September: 63°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).
Average pressure in September
Lancaster, VA
- Average pressure in September: 30.04"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
Lancaster, VA
- Average wind speed in September: 6.3mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in September
Lancaster, VA
- Average humidity in September: 77%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (73%).
Average rainfall in September
Lancaster, VA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is August (3.19").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in September
Lancaster, VA
- Average rainfall days in September: 11.9 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (9.9 days).
Average snowfall in September
Lancaster, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Lancaster, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (3.7 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
Lancaster, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- 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: 5h and 6min).
Average sunshine days in September
Lancaster, VA
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is May (11.6 days).
Average UV index in September
Lancaster, VA
- Average UV index in September: 5
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 and December (UV index 2).
Average cloud cover in September
Lancaster, VA
- Average cloud cover in September: 37
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Lancaster, VA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Lancaster, Virginia, USA
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