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 onset of September results in a small decrease in the average high-temperature, moderately receding from 82.2°F (27.9°C) in August to a still warm 75.4°F (24.1°C). During September, Lacey Spring's temperature falls to a steady low-temperature average of 54.5°F (12.5°C).Humidity
The months with the highest humidity are September and October, with an average relative humidity of 79%.Rainfall
In Lacey Spring, during September, the rain falls for 13.5 days and regularly aggregates up to 1.93" (49mm) of precipitation. Throughout the year, there are 155 rainfall days, and 23.23" (590mm) of precipitation is accumulated.Snowfall
In Lacey Spring, snow does not fall in May through September.Daylight
In September, the average length of the day is 12h and 25min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:44 pm. On the last day of September, sunrise is at 7:10 am and sunset at 6:58 pm EDT.
Sunshine
The average sunshine in September is 8.6h.UV index
In Lacey Spring, 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 rays for the average person.Note: The maximum UV index, 4 during September, leads to the following recommendations:
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. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Frequently asked questions
What is the average September temperature in Lacey Spring?
What are the most humid months in Lacey Spring?
What is the average humidity in September in Lacey Spring?
How much does it rain in Lacey Spring in September?
When it does not snow in Lacey Spring?
Does it snow in Lacey Spring in September?
How many hours of daylight does Lacey Spring have in September?
When are sunrise and sunset in September in Lacey Spring?
How many hours of sunshine does Lacey Spring have in September?
What is the UV index intensity in September in Lacey Spring?
Average temperature in September
Lacey Spring, VA
- Average high temperature in September: 75.4°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in September: 54.5°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 (23°F).
Average pressure in September
Lacey Spring, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Lacey Spring, VA
- Average wind speed in September: 4.5mph
The windiest months (with the highest average wind speed) are February and April (6.8mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in September
Lacey Spring, VA
- Average humidity in September: 79%
The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, April, June, July and November (75%).
Average rainfall in September
Lacey Spring, VA
- Average rainfall in September: 1.93"
The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in September
Lacey Spring, VA
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (18.9 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in September
Lacey Spring, VA
- Average snowfall in September: 0"
The month with the highest snowfall is January (2.68").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Lacey Spring, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Lacey Spring, VA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 8h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
Lacey Spring, VA
- Average sunshine days in September: 13.7 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Lacey Spring, VA
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lacey Spring, VA
- Average cloud cover in September: 40
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in September
Lacey Spring, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, April, June, July and November (6mi).
The months with the lowest visibility are January, March, May, August, September, October and December (5mi).
Lacey Spring, Virginia, USA
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