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
Roxbury's September weather features a light decline in high-temperatures, reducing from a hot 88°F (31.1°C) in August to a moderately hot 81.3°F (27.4°C). An average nighttime temperature of 63.3°F (17.4°C) is witnessed in Roxbury, Virginia throughout September.Heat index
The heat index for September is calculated to be a hot 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.The metrics for the heat index are tailored for both shady environments and light winds. The heat index could experience an increase of 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Understand that direct sun rays can influence the weather's impact, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
Humidity
In Roxbury, the average relative humidity in September is 74%.Rainfall
September is the month with the least rainfall. Rain falls for 10.5 days and accumulates 1.1" (28mm) of precipitation.Snowfall
In Roxbury, snow does not fall in May through October.Daylight
In Roxbury, the average length of the day in September is 12h and 25min.On the first day of the month, sunrise is at 6:39 am and sunset at 7:37 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:52 pm EDT.
Sunshine
The average sunshine in September in Roxbury is 8.7h.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 unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 5 during September leads to these advisories:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the usual temperature for Roxbury in September?
What is the average humidity in September in Roxbury?
What is the driest month in Roxbury?
How much does it rain in Roxbury in September?
When it does not snow in Roxbury?
How many hours of daylight does Roxbury have in September?
What time are sunrise and sunset in September in Roxbury?
How many hours of sunshine does Roxbury have in September?
How high is the UV index in September in Roxbury?
Average temperature in September
Roxbury, VA
- Average high temperature in September: 81.3°F
The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (44.8°F).
- Average low temperature in September: 63.3°F
The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).
Average pressure in September
Roxbury, 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
Roxbury, VA
- Average wind speed in September: 5.7mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Roxbury, VA
- Average humidity in September: 74%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Roxbury, VA
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is August (2.05").
The driest month (with the least rainfall) is September (1.1").
Average rainfall days in September
Roxbury, VA
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (14.8 days).
The months with the least rainy days are October and November (8.2 days).
Average snowfall in September
Roxbury, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (0.67").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Roxbury, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.4 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
Roxbury, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in September
Roxbury, VA
- Average sunshine days in September: 18.6 days
The months with the most sunshine days are October and December (21.4 days).
The month with the least sunshine days is May (14.4 days).
Average UV index in September
Roxbury, VA
- Average UV index in September: 5
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Roxbury, VA
- Average cloud cover in September: 39
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in September
Roxbury, VA
- 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).
Roxbury, Virginia, USA
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