September weather forecast
Severn, VA

Share

Weather in September

September, the first month of the autumn in Severn, is still a warm month, with temperature in the range of an average low of 66.6°F (19.2°C) and an average high of 79.9°F (26.6°C).

Temperature

With the onset of September, the average high-temperature subtly recedes from August's 85.6°F (29.8°C) to a still moderately hot 79.9°F (26.6°C). In the month of September, Severn records a consistent average low-temperature of 66.6°F (19.2°C).

Humidity

In September, the average relative humidity is 75%.

Rainfall

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

Snowfall

April through October are months without snowfall.

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 7:34 pm. On the last day of September, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

Sunshine

In Severn, the average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Exercise prevention - Warding off sunburn is urged. It's recommended to limit sun exposure when its radiation is at its peak during midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
[Resources]

Frequently asked questions

What is the usual temperature for Severn in September?

The high-temperature in Severn, Virginia, during September is 79.9°F (26.6°C) and the low-temperature is 66.6°F (19.2°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is calculated to be 95°F (35°C).

What is the average humidity in September in Severn?

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

What is the driest month in Severn?

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

How many days does it rain in September in Severn?

In Severn, during September, the rain falls for 13 days and regularly aggregates up to 2.4" (61mm) of precipitation.

When it does not snow in Severn?

April through October are months without snowfall in Severn, Virginia.

What is the average length of the day in September in Severn?

In Severn, the average day length in September is 12h and 25min.

When are sunrise and sunset in September in Severn?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:49 pm EDT.

How many hours of sunshine does Severn have in September?

The average sunshine duration in September is 9.2h.

What is the UV index intensity in September in Severn?

The average daily maximum UV index in September in Severn, Virginia, is 5. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Severn, VA

Average temperature in September - Severn, 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).

[Resources]

Average pressure in September
Severn, VA

Average pressure in September - Severn, 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).

[Resources]

Average wind speed in September
Severn, VA

Average wind speed in September - Severn, 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).

[Resources]

Average humidity in September
Severn, VA

Average humidity in September - Severn, 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%).

[Resources]

Average rainfall in September
Severn, VA

Average rainfall in September - Severn, 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").

[Resources]

Average rainfall days in September
Severn, VA

Average rainfall days in September - Severn, 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).

[Resources]

Average snowfall in September
Severn, VA

Average snowfall in September - Severn, 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").

[Resources]

Average snowfall days in September
Severn, VA

Average snowfall days in September - Severn, 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).

[Resources]

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

Average daylight in September / Average sunshine in September - Severn, 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).

[Resources]

Average sunshine days in September
Severn, VA

Average sunshine days in September - Severn, 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).

[Resources]

Average UV index in September
Severn, VA

Average UV index in September - Severn, 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).

[Resources]

Average cloud cover in September
Severn, VA

Average cloud cover in September - Severn, 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).

[Resources]

Average visibility in September
Severn, VA

Average visibility in September - Severn, 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).

[Resources]

Severn, Virginia, USA

Weather forecast for your location

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