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
September heralds a minor drop in average high-temperature, sliding from August's hot 86.9°F (30.5°C) to a moderately hot 81.1°F (27.3°C). During the month of September, Radium experiences a steady low-temperature average of 63.1°F (17.3°C).Heat index
For most parts of September, the heat index is calculated to be a hot 86°F (30°C). Unrelenting activity during exposure could cause fatigue and potentially lead to heat cramps.Note that heat index values are valued for light wind and location in the shade. Exposure to the direct sun could elevate the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', stands as a testimony to how temperature and humidity combine to impact our sense of warmth. This effect is personal, influenced by the individual's physical activity and heat sensitivity, shaped by factors including wind, attire, and metabolic variations. By being directly under the sun, it's possible for the felt temperature to increase by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Young children typically face greater hazards than adults because they do not sweat as much. Their larger skin surface in comparison to their little bodies and the high heat production from their active nature compounds their vulnerability.
Humidity
In September, the average relative humidity in Radium is 77%.Rainfall
In Radium, Virginia, in September, during 13 rainfall days, 2.09" (53mm) of precipitation is typically accumulated. Throughout the year, there are 167.6 rainfall days, and 32.09" (815mm) of precipitation is accumulated.Snowfall
In Radium, snow does not fall in April through October.Daylight
In Radium, the average length of the day in September is 12h and 24min.On the first day of September in Radium, sunrise is at 6:42 am and sunset at 7:38 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:54 pm EDT.
Sunshine
In Radium, the average sunshine in September is 9h.UV index
The average daily maximum UV index in September in Radium is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 5 during September translates into these guidelines:
Take precautions - Protection against skin and eye damage is obliged. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Frequently asked questions
What are September temperatures in Radium?
What is the average humidity in September in Radium?
How much does it rain in Radium in September?
When it does not snow in Radium?
What is the average length of the day in September in Radium?
What time are sunrise and sunset in September in Radium?
How many hours of sunshine does Radium have in September?
What is the UV index reading in September in Radium?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Radium, 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: 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).
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).
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).
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).
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).
Radium, Virginia, USA
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