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
In Spottswood, the beginning of September is marked by a marginally lowered average high-temperature, shifting from August's warm 81.9°F (27.7°C) to a still moderately hot 75.9°F (24.4°C). Spottswood experiences an average nighttime temperature of 55.2°F (12.9°C) in the month of September.Humidity
The average relative humidity in September in Spottswood is 78%.Rainfall
In Spottswood, in September, it is raining for 14.5 days, with typically 2.32" (59mm) of accumulated precipitation. In Spottswood, during the entire year, the rain falls for 164.9 days and collects up to 33.7" (856mm) of precipitation.Snowfall
June through September are months without snowfall.Daylight
In September, the average length of the day is 12h and 25min.On the first day of September in Spottswood, sunrise is at 6:47 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:00 pm EDT.
Sunshine
The average sunshine in September in Spottswood is 8.2h.UV index
In Spottswood, Virginia, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 4 during September leads to these instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. 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 usual temperature for Spottswood in September?
What is the average humidity in September in Spottswood?
How many days does it rain in September in Spottswood?
When it does not snow in Spottswood?
Does it snow in Spottswood in September?
What is the average length of the day in September in Spottswood?
When are sunrise and sunset in September in Spottswood?
How long on average sun shines in September in Spottswood?
How high is the UV index in September in Spottswood?
Average temperature in September
Spottswood, VA
- Average high temperature in September: 75.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in September: 55.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in September
Spottswood, VA
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in September
Spottswood, VA
- Average wind speed in September: 4.7mph
The windiest months (with the highest average wind speed) are February and April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in September
Spottswood, VA
- Average humidity in September: 78%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and July (74%).
Average rainfall in September
Spottswood, VA
- Average rainfall in September: 2.32"
The wettest month (with the highest rainfall) is May (3.7").
The driest months (with the least rainfall) are January and November (2.09").
Average rainfall days in September
Spottswood, VA
- Average rainfall days in September: 14.5 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in September
Spottswood, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Spottswood, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Spottswood, 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 36min).
- Average sunshine in September: 8h and 1min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in September
Spottswood, VA
- Average sunshine days in September: 14.7 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in September
Spottswood, 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
Spottswood, VA
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are June and July (Cloud cover 34).
Average visibility in September
Spottswood, VA
- Average visibility in September: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).
Spottswood, Virginia, USA
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