September weather forecast
Danville, VA

Weather in September

September, the first month of the autumn in Danville, is also a moderately hot month, with an average temperature fluctuating between 61.9°F (16.6°C) and 81.3°F (27.4°C).

Temperature

In September, the average high-temperature slightly decreases from a hot 88.3°F (31.3°C) in August to a moderately hot 81.3°F (27.4°C). In Danville, the average low-temperature is 61.9°F (16.6°C).

Heat index

The average heat index in September is calculated to be 86°F (30°C). Constant exposure and activity lead to possible fatigue. Prolonged exercise 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 'real feel', 'felt air temperature', 'apparent temperature', or 'feels like', combines air temperature and relative humidity to represent a human perceived temperature equivalent. This effect is individual, with diverse people perceiving weather differently for numerous reasons (metabolic differences, wind, pregnancy), and activity. 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. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.

Humidity

The average relative humidity in September in Danville, Virginia, is 74%.

Rainfall

September is the month with the least rainfall. Rain falls for 12.1 days and accumulates 1.61" (41mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 24min.
On the first day of September in Danville, Virginia, sunrise is at 6:48 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm EDT.

Sunshine

In September, the average sunshine is 8.8h.

UV index

In September, the average daily maximum UV index in Danville is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the temperature in September in Danville?

In Danville, Virginia, in September, the average high-temperature is 81.3°F (27.4°C), and the average low-temperature is 61.9°F (16.6°C). The average heat index (a.k.a. 'real feel', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in September is calculated to be 86°F (30°C).

What is the average humidity in September in Danville?

In September, the average relative humidity is 74%.

What is the driest month in Danville?

The month with the least rainfall in Danville, Virginia, is September, when the rain falls for 12.1 days and typically collects 1.61" (41mm) of precipitation.

How much does it rain in Danville in September?

In Danville, during September, the rain falls for 12.1 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Danville?

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

How many hours of daylight does Danville have in September?

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

When are sunrise and sunset in September in Danville?

On the first day of September in Danville, sunrise is at 6:48 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:02 pm EDT.

How long on average sun shines in September in Danville?

The average sunshine duration in September in Danville, Virginia, is 8.8h.

What is the UV index reading in September in Danville?

The average daily maximum UV index in September in Danville is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from unsafe exposure to Sun's UV rays.
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
Danville, VA

Average temperature in September - Danville, VA
  • Average high temperature in September: 81.3°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (45.5°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (30.6°F).

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Average pressure in September
Danville, VA

Average pressure in September - Danville, VA
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

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Average wind speed in September
Danville, VA

Average wind speed in September - Danville, VA
  • Average wind speed in September: 5.1mph

The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).

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Average humidity in September
Danville, VA

Average humidity in September - Danville, VA
  • Average humidity in September: 74%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in September
Danville, VA

Average rainfall in September - Danville, VA
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in September
Danville, VA

Average rainfall days in September - Danville, VA
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is November (9.1 days).

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Average snowfall in September
Danville, VA

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

The months with the highest snowfall are January and December (2.17").
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
Danville, VA

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

The month with the highest number of snowfall days is February (3.2 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
Danville, VA

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

The month with the longest days is June (Average daylight: 14h and 37min).
The month with the shortest days is December (Average daylight: 9h and 43min).

  • Average sunshine in September: 8h and 48min

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

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Average sunshine days in September
Danville, VA

Average sunshine days in September - Danville, VA
  • Average sunshine days in September: 16.5 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (12.4 days).

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Average UV index in September
Danville, VA

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

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Average cloud cover in September
Danville, VA

Average cloud cover in September - Danville, VA
  • Average cloud cover in September: 37

The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is June (Cloud cover 30).

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Average visibility in September
Danville, VA

Average visibility in September - Danville, 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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