September weather forecast
Radcliff, VA

Share

Weather in September

The first month of the autumn, September, is still a warm month in Radcliff, Virginia, with an average temperature ranging between max 81.1°F (27.3°C) and min 62.8°F (17.1°C).

Temperature

The commencement of September includes a gentle temperature shift, with the average high-temperature dropping a bit from a tropical 87.3°F (30.7°C) in August to a moderately hot 81.1°F (27.3°C). During the September nights, an average temperature of 62.8°F (17.1°C) is observed.

Heat index

The heat index value during September is evaluated at a tropical 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.
Factoring in the heat index, values are geared towards shaded areas with light breezes. Uninterrupted exposure to the sun may boost the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', is found by incorporating humidity levels into the air temperature measurement. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Kids generally face higher risks than adults as they sweat less. Along with their large skin surface compared to their small bodies and higher heat production due to their activities, their vulnerability is increased.

Humidity

The average relative humidity in September is 76%.

Rainfall

The month with the least rainfall is September, when the rain falls for 12.9 days and typically collects 1.85" (47mm) of precipitation.

Snowfall

In Radcliff, snow does not fall in May through October.

Daylight

In Radcliff, the average length of the day in September is 12h and 24min.
On the first day of September in Radcliff, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

Sunshine

In Radcliff, the average sunshine in September is 8.7h.

UV index

The average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.
Note: In September, an average UV index of 5 transforms into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.

Frequently asked questions

What is the usual temperature for Radcliff in September?

An average high-temperature, in September, in Radcliff, is 81.1°F (27.3°C) and the average low-temperature is 62.8°F (17.1°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in September is evaluated at 86°F (30°C).

What is the average humidity in September?

In September, the average relative humidity is 76%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 12.9 days and accumulates 1.85" (47mm) of precipitation.

How much does it rain in September?

In Radcliff, in September, during 12.9 rainfall days, 1.85" (47mm) of precipitation is typically accumulated.

When it does not snow?

In Radcliff, snow does not fall in May through October.

How many hours of daylight does Radcliff have in September?

In September, the average day length is 12h and 24min.

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:44 am and sunset at 7:40 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:57 pm EDT.

How long on average sun shines in September?

The average sunshine duration in September is 8.7h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Radcliff, VA

Average temperature in September - Radcliff, VA
  • Average high temperature in September: 81.1°F

The warmest month (with the highest average high temperature) is July (89.6°F).
The month with the lowest average high temperature is January (45.9°F).

  • Average low temperature in September: 62.8°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 (30.6°F).

Average pressure in September
Radcliff, VA

Average pressure in September - Radcliff, VA
  • Average pressure in September: 30.04"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
Radcliff, VA

Average wind speed in September - Radcliff, VA
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is April (8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in September
Radcliff, VA

Average humidity in September - Radcliff, VA
  • Average humidity in September: 76%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is July (72%).

Average rainfall in September
Radcliff, VA

Average rainfall in September - Radcliff, VA
  • Average rainfall in September: 1.85"

The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in September
Radcliff, VA

Average rainfall days in September - Radcliff, VA
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Radcliff, VA

Average snowfall in September - Radcliff, VA
  • Average snowfall in September: 0"

The month with the highest snowfall is March (2.01").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Radcliff, VA

Average snowfall days in September - Radcliff, VA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.2 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
Radcliff, VA

Average daylight in September / Average sunshine in September - Radcliff, VA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in September
Radcliff, VA

Average sunshine days in September - Radcliff, VA
  • Average sunshine days in September: 15.5 days

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is May (11 days).

Average UV index in September
Radcliff, VA

Average UV index in September - Radcliff, 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 and December (UV index 2).

Average cloud cover in September
Radcliff, VA

Average cloud cover in September - Radcliff, VA
  • Average cloud cover in September: 39

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is June (Cloud cover 31).

Average visibility in September
Radcliff, VA

Average visibility in September - Radcliff, VA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Radcliff, Virginia, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location