September weather forecast
Westover, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Westover, Maryland, with an average temperature ranging between min 65.8°F (18.8°C) and max 77°F (25°C).

Temperature

During the shift to September, Westover records a mild decrease in average high-temperature, moving from a moderately hot 82.8°F (28.2°C) in August to a still warm 77°F (25°C). An average low-temperature of 65.8°F (18.8°C) marks the nights throughout September.

Humidity

In Westover, the average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 13.8 days. Throughout September, 2.2" (56mm) of precipitation is accumulated. In Westover, during the entire year, the rain falls for 158.2 days and collects up to 29.96" (761mm) of precipitation.

Snowfall

April through October are months without snowfall.

Daylight

The average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:33 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:46 pm EDT.

Sunshine

In September, the average sunshine is 9.5h.

UV index

In September, the average daily maximum UV index in Westover is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Ensure safety - Sun damage prevention is strongly urged. To guard against the harmful effects of the Sun, minimize exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average September temperature?

In September, the average high-temperature and low-temperature are 77°F (25°C) and 65.8°F (18.8°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is estimated at 89.6°F (32°C).

What is the average humidity in September?

In Westover, the average relative humidity in September is 78%.

How many days does it rain in September?

In September, the rain falls for 13.8 days. Throughout September, 2.2" (56mm) of precipitation is accumulated.

When it does not snow?

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

How many hours of daylight does Westover have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:33 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 6:46 pm EDT.

How many hours of sunshine does Westover have in September?

The average sunshine duration in September is 9.5h.

How high is the UV index in September?

In Westover, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health threat from unprotected exposure to 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
Westover, MD

Average temperature in September - Westover, MD
  • Average high temperature in September: 77°F

The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (42.1°F).

  • Average low temperature in September: 65.8°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 (31.5°F).

Average pressure in September
Westover, MD

Average pressure in September - Westover, MD
  • Average pressure in September: 30.04"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
Westover, MD

Average wind speed in September - Westover, MD
  • Average wind speed in September: 8.2mph

The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).

Average humidity in September
Westover, MD

Average humidity in September - Westover, MD
  • Average humidity in September: 78%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (74%).

Average rainfall in September
Westover, MD

Average rainfall in September - Westover, MD
  • Average rainfall in September: 2.2"

The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in September
Westover, MD

Average rainfall days in September - Westover, MD
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.7 days).

Average snowfall in September
Westover, MD

Average snowfall in September - Westover, MD
  • Average snowfall in September: 0"

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

Average snowfall days in September
Westover, MD

Average snowfall days in September - Westover, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.1 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
Westover, MD

Average daylight in September / Average sunshine in September - Westover, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in September: 9h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).

Average sunshine days in September
Westover, MD

Average sunshine days in September - Westover, MD
  • Average sunshine days in September: 13.8 days

The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (9.8 days).

Average UV index in September
Westover, MD

Average UV index in September - Westover, MD
  • 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
Westover, MD

Average cloud cover in September - Westover, MD
  • Average cloud cover in September: 31

The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).

Average visibility in September
Westover, MD

Average visibility in September - Westover, MD
  • 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).

Westover, Maryland, USA

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