September weather forecast
Radium, VA

Weather in September

The first month of the autumn, September, is still a warm month in Radium, Virginia, with an average temperature ranging between min 63.1°F (17.3°C) and max 81.1°F (27.3°C).

Temperature

In September, the average high-temperature marginally drops from a tropical 86.9°F (30.5°C) in August to a moderately hot 81.1°F (27.3°C). The average low-temperature, in Radium, Virginia, is 63.1°F (17.3°C).

Heat index

The average heat index in September is estimated at a tropical 86°F (30°C). Exhaustion is likely with prolonged exposure and activity. Sustaining activity may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like', 'felt air temperature', 'apparent temperature', or 'real feel', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. This effect is subjective, depending on the activity and individual's heat perception influenced by various reasons (pregnancy, wind, differences in body mass, height, and shape). Be aware that direct exposure to sunlight increases heat impact and may raise the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

The average relative humidity in September in Radium is 77%.

Rainfall

In September, in Radium, Virginia, the rain falls for 13 days. Throughout September, 2.09" (53mm) of precipitation is accumulated. In Radium, during the entire year, the rain falls for 167.6 days and collects up to 32.09" (815mm) of precipitation.

Snowfall

April through October are months without snowfall in Radium.

Daylight

The average length of the day in September is 12h and 24min.
On the first day of September, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:55 pm EDT.

Sunshine

The average sunshine in September is 9h.

UV index

In September, the average daily maximum UV index in Radium is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in September in Radium?

In Radium, in September, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 63.1°F (17.3°C). in September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines air temperature and relative humidity, is estimated at 86°F (30°C).

What is the average humidity in September in Radium?

In September, the average relative humidity is 77%.

How many days does it rain in September in Radium?

In Radium, Virginia, in September, it is raining for 13 days, with typically 2.09" (53mm) of accumulated precipitation.

When it does not snow in Radium?

In Radium, snow does not fall in April through October.

How many hours of daylight does Radium have in September?

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

When is the sunrise / sunset in September in Radium?

On the first day of September in Radium, sunrise is at 6:41 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:55 pm EDT.

How long on average sun shines in September in Radium?

In Radium, Virginia, the average sunshine duration in September is 9h.

How high is the UV index in September in Radium?

The average daily maximum UV index in September in Radium, Virginia, is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Radium, VA

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

The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (46.2°F).

  • Average low temperature in September: 63.1°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 (31.1°F).

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Average pressure in September
Radium, VA

Average pressure in September - Radium, VA
  • Average pressure in September: 30.03"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).

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Average wind speed in September
Radium, VA

Average wind speed in September - Radium, VA
  • Average wind speed in September: 6.2mph

The windiest month (with the highest average wind speed) is April (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).

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Average humidity in September
Radium, VA

Average humidity in September - Radium, VA
  • Average humidity in September: 77%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, February, April, July and November (74%).

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Average rainfall in September
Radium, VA

Average rainfall in September - Radium, VA
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is August (3.35").
The driest month (with the least rainfall) is October (1.89").

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Average rainfall days in September
Radium, VA

Average rainfall days in September - Radium, VA
  • Average rainfall days in September: 13 days

The months with the highest number of rainy days are May and July (18.3 days).
The month with the least rainy days is November (10.1 days).

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Average snowfall in September
Radium, VA

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

The month with the highest snowfall is February (1.54").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Radium, VA

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

The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Radium, VA

Average daylight in September / Average sunshine in September - Radium, VA
  • Average daylight in September: 12h and 24min

The month with the longest days is June (Average daylight: 14h and 38min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in September: 9h and 0min

The months with the most sunshine are June and July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 30min).

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Average sunshine days in September
Radium, VA

Average sunshine days in September - Radium, VA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is July (10.6 days).

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Average UV index in September
Radium, VA

Average UV index in September - Radium, 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).

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Average cloud cover in September
Radium, VA

Average cloud cover in September - Radium, VA
  • Average cloud cover in September: 38

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

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Average visibility in September
Radium, VA

Average visibility in September - Radium, VA
  • Average visibility in September: 6mi

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

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