September weather forecastPhenix, VA
September
Weather in September
September, the first month of the autumn in Phenix, is still a warm month, with an average temperature fluctuating between 80.6°F (27°C) and 61.3°F (16.3°C).Temperature
The beginning of September brings a slight decrease in the average high-temperature, transitioning from a tropical 87.4°F (30.8°C) in August to a moderately hot 80.6°F (27°C). September nights cool down to an average low-temperature of 61.3°F (16.3°C).Heat index
In September, the average heat index is evaluated at 84.2°F (29°C). Enduring exposure and ongoing activity could cause a sense of fatigue and subsequent heat cramps.Research indicates the heat index considers values in shaded locales and with light winds. Direct sunlight can cause a surge in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a measure of how hot it feels when the actual air humidity is factored in. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are especially crucial for babies and toddlers. Young children are more at risk than adults since they tend to sweat less. Moreover, their large skin surface in proportion to their small bodies and the high heat production due to their activities contribute to their vulnerability.
Humidity
In Phenix, the average relative humidity in September is 75%.Rainfall
The month with the least rainfall is September, when the rain falls for 12.2 days and typically collects 1.69" (43mm) of precipitation.Snowfall
May 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, sunrise is at 6:46 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:10 am and sunset at 6:59 pm EDT.
Sunshine
In Phenix, the average sunshine in September is 8.7h.UV index
In September, the average daily maximum UV index in Phenix is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 5 in September translates into this advice:
Exercise prevention - Protecting skin and eyes from harm is required. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Phenix, VA
- Average high temperature in September: 80.6°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 (44.6°F).
- Average low temperature in September: 61.3°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (29.1°F).
Average pressure in September
Phenix, VA
- Average pressure in September: 30.05"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
Phenix, VA
- Average wind speed in September: 5.3mph
The windiest month (with the highest average wind speed) is April (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in September
Phenix, 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 (69%).
Average rainfall in September
Phenix, VA
- Average rainfall in September: 1.69"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in September
Phenix, VA
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9 days).
Average snowfall in September
Phenix, VA
- Average snowfall in September: 0"
The month with the highest snowfall is March (2.52").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Phenix, VA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Phenix, VA
- Average daylight in September: 12h and 24min
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 42min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in September
Phenix, VA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in September
Phenix, VA
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
Phenix, VA
- Average cloud cover in September: 39
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
Phenix, VA
- Average visibility in September: 5mi
The months with the highest visibility are February, March, April, June, July, August, October and November (6mi).
The months with the lowest visibility are January, May, September and December (5mi).
