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
Colonial Heights's progression into September involves a gentle drop in the average high-temperature, from a tropical 87.6°F (30.9°C) in August to a moderately hot 81.1°F (27.3°C). During the month of September, the temperature generally drops to a low average of 63.1°F (17.3°C).Heat index
The heat index value for September is calculated to be a hot 86°F (30°C). With ongoing exposure and activity, one might experience weariness, and heat cramps could ensue.Heat index specifics point out values are for conditions of shade and a slight breeze. Direct sunlight can potentially boost the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', offers an insight into how hot it feels when we factor in moisture content. Factors encompassing physical activity, clothing, and metabolic differences have a role in shaping the individual's impression of temperature. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Children regularly disregard the necessity to rest and replenish fluids. Thirst is a late symptom of dehydration - thus, maintaining hydration, particularly during long-lasting physical activities, is essential.
Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 9 days and typically collects 0.59" (15mm) of precipitation.Snowfall
In Colonial Heights, snow does not fall in May through October.Daylight
The average length of the day in September in Colonial Heights is 12h and 25min.On the first day of the month, sunrise is at 6:40 am and sunset at 7:38 pm. On the last day of September, in Colonial Heights, sunrise is at 7:04 am and sunset at 6:53 pm EDT.
Sunshine
In Colonial Heights, the average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: An average maximum UV index of 5 in September leads to these recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Frequently asked questions
What is the average September temperature in Colonial Heights?
What is the average humidity in September in Colonial Heights?
What is the driest month in Colonial Heights?
How much does it rain in Colonial Heights in September?
When it does not snow in Colonial Heights?
What is the average length of the day in September in Colonial Heights?
When is the sunrise / sunset in September in Colonial Heights?
How long on average sun shines in September in Colonial Heights?
How high is the UV index in September in Colonial Heights?
Average temperature in September
Colonial Heights, VA
- Average high temperature in September: 81.1°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (45.3°F).
- Average low temperature in September: 63.1°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 (30°F).
Average pressure in September
Colonial Heights, 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 (29.96"Hg).
Average wind speed in September
Colonial Heights, VA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Colonial Heights, VA
- Average humidity in September: 75%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Colonial Heights, VA
- Average rainfall in September: 0.59"
The wettest month (with the highest rainfall) is August (1.22").
The driest month (with the least rainfall) is September (0.59").
Average rainfall days in September
Colonial Heights, VA
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is May (12.2 days).
The month with the least rainy days is October (5.6 days).
Average snowfall in September
Colonial Heights, VA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Colonial Heights, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.8 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
Colonial Heights, 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 42min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 5h and 24min).
Average sunshine days in September
Colonial Heights, VA
- Average sunshine days in September: 19.1 days
The month with the most sunshine days is October (23.6 days).
The month with the least sunshine days is May (15.3 days).
Average UV index in September
Colonial Heights, VA
- Average UV index in September: 5
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in September
Colonial Heights, VA
- Average cloud cover in September: 38
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in September
Colonial Heights, 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).
Colonial Heights, Virginia, USA
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