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
A moderate decline in average high-temperatures is noted in September, moving from a hot 87.6°F (30.9°C) in August to a moderately hot 81°F (27.2°C). Throughout September, a steady low-temperature average of 63.1°F (17.3°C) is noted.Heat index
September's mean heat index is estimated at a hot 86°F (30°C). Persisting in activity during long-term exposure might induce weariness, with subsequent heat cramps.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The heat index may scale up by 15 Fahrenheit (8 Celsius) degrees with direct sun exposure.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The individual's impression of temperature can be shaped by additional aspects such as metabolic variations, physical activity, and clothing. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
Humidity
In Garysville, Virginia, the average relative humidity in September is 76%.Rainfall
September is the month with the least rainfall in Garysville. Rain falls for 8.5 days and accumulates 0.47" (12mm) of precipitation.Snowfall
In Garysville, snow does not fall in April through October.Daylight
In Garysville, 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, in Garysville, sunrise is at 7:03 am and sunset at 6:52 pm EDT.
Sunshine
In Garysville, Virginia, the average sunshine in September is 8.9h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Garysville?
What is the average humidity in September in Garysville?
What is the driest month in Garysville?
How much does it rain in Garysville in September?
When it does not snow in Garysville?
How many hours of daylight does Garysville have in September?
When is the sunrise / sunset in September in Garysville?
How long on average sun shines in September in Garysville?
How high is the UV index in September in Garysville?
Average temperature in September
Garysville, VA
- Average high temperature in September: 81°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 (45.1°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
Garysville, 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
Garysville, VA
- Average wind speed in September: 5.8mph
The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in September
Garysville, VA
- Average humidity in September: 76%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).
Average rainfall in September
Garysville, VA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is August (1.02").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in September
Garysville, VA
- Average rainfall days in September: 8.5 days
The month with the highest number of rainy days is May (11.8 days).
The month with the least rainy days is January (5.4 days).
Average snowfall in September
Garysville, VA
- Average snowfall in September: 0"
The months with the highest snowfall are January, February and March (0.2").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in September
Garysville, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.5 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
Garysville, 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
Garysville, VA
- Average sunshine days in September: 19.5 days
The month with the most sunshine days is October (23.1 days).
The month with the least sunshine days is May (16.2 days).
Average UV index in September
Garysville, 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
Garysville, VA
- Average cloud cover in September: 38
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
Garysville, 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).
Garysville, Virginia, USA
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