September weather forecast
Hallieford, VA

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Hallieford, Virginia, with an average temperature fluctuating between 79.9°F (26.6°C) and 66.6°F (19.2°C).

Temperature

The advent of September brings a slight shift in average high-temperature, moving from a moderately hot 85.6°F (29.8°C) in August to a still warm 79.9°F (26.6°C). Hallieford, during September nights, observes an average temperature of 66.6°F (19.2°C).

Humidity

In Hallieford, the average relative humidity in September is 75%.

Rainfall

The month with the least rainfall in Hallieford is September, when the rain falls for 13 days and typically collects 2.4" (61mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 25min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:33 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the average person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the temperatures in September?

In September, in Hallieford, the average high-temperature is 79.9°F (26.6°C), and the average low-temperature is 66.6°F (19.2°C). In August, 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, is estimated at 95°F (35°C).

What is the average humidity in September?

In Hallieford, the average relative humidity in September is 75%.

What is the driest month?

September is the month with the least rainfall. Rain falls for 13 days and accumulates 2.4" (61mm) of precipitation.

How much does it rain in September?

In September, in Hallieford, the rain falls for 13 days. Throughout September, 2.4" (61mm) of precipitation is accumulated.

When it does not snow?

April through October are months without snowfall.

How many hours of daylight does Hallieford have in September?

The average day length in September is 12h and 25min.

When is the sunrise / sunset in September?

On the first day of September, sunrise is at 6:36 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

How long on average sun shines in September?

In Hallieford, the average sunshine duration in September is 9.2h.

What is the UV index reading in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's UV radiation.
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
Hallieford, VA

Average temperature in September - Hallieford, VA
  • Average high temperature in September: 79.9°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in September: 66.6°F

The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

Average pressure in September
Hallieford, VA

Average pressure in September - Hallieford, VA
  • Average pressure in September: 30.03"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in September
Hallieford, VA

Average wind speed in September - Hallieford, VA
  • Average wind speed in September: 7.6mph

The windiest month (with the highest average wind speed) is April (9.5mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).

Average humidity in September
Hallieford, VA

Average humidity in September - Hallieford, 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 (72%).

Average rainfall in September
Hallieford, VA

Average rainfall in September - Hallieford, VA
  • Average rainfall in September: 2.4"

The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is September (2.4").

Average rainfall days in September
Hallieford, VA

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

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is November (9.6 days).

Average snowfall in September
Hallieford, VA

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

The month with the highest snowfall is February (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Hallieford, VA

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

The month with the highest number of snowfall days is January (3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

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

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 36min).

  • Average sunshine in September: 9h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 12min).

Average sunshine days in September
Hallieford, VA

Average sunshine days in September - Hallieford, VA
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (11.5 days).

Average UV index in September
Hallieford, VA

Average UV index in September - Hallieford, VA
  • Average UV index in September: 5

The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

Average cloud cover in September
Hallieford, VA

Average cloud cover in September - Hallieford, VA
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in September
Hallieford, VA

Average visibility in September - Hallieford, 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).

Hallieford, Virginia, USA

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