September weather forecast
Wynnewood, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Wynnewood, Maryland, with an average temperature varying between 62.2°F (16.8°C) and 77.2°F (25.1°C).

Temperature

The arrival of September suggests a slight decrease in the average high-temperature, moving from a moderately hot 83.8°F (28.8°C) in August to a still warm 77.2°F (25.1°C). An average low-temperature of 62.2°F (16.8°C) is common in Wynnewood during the nights of September.

Humidity

The average relative humidity in September in Wynnewood is 75%.

Rainfall

In Wynnewood, during September, the rain falls for 13.1 days and regularly aggregates up to 2.09" (53mm) of precipitation. In Wynnewood, during the entire year, the rain falls for 156.3 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

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

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of September, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

Sunshine

The average sunshine in September in Wynnewood is 9.3h.

UV index

In Wynnewood, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: A daily maximum UV index of 5 in September translates into the following instructions:
Put precautions into practice - Guidance to elude sunburn is provided. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.

Frequently asked questions

What is the usual temperature for Wynnewood in September?

Wynnewood in September has an average high-temperature of 77.2°F (25.1°C) and an average low-temperature of 62.2°F (16.8°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which combines air temperature and relative humidity, is calculated to be 91.4°F (33°C).

What is the average humidity in September?

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

How many days does it rain in September in Wynnewood?

In Wynnewood, in September, during 13.1 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow?

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

What is the average length of the day in September?

In September, the average day length is 12h and 26min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:37 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

How many hours of sunshine does Wynnewood have in September?

In Wynnewood, the average sunshine duration in September is 9.3h.

How high is the UV index in September?

In September, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents 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
Wynnewood, MD

Average temperature in September - Wynnewood, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.8°F).

  • Average low temperature in September: 62.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

Average pressure in September
Wynnewood, MD

Average pressure in September - Wynnewood, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Wynnewood, MD

Average wind speed in September - Wynnewood, MD
  • Average wind speed in September: 6.5mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in September
Wynnewood, MD

Average humidity in September - Wynnewood, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

Average rainfall in September
Wynnewood, MD

Average rainfall in September - Wynnewood, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

Average rainfall days in September
Wynnewood, MD

Average rainfall days in September - Wynnewood, MD
  • Average rainfall days in September: 13.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

Average snowfall in September
Wynnewood, MD

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

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in September
Wynnewood, MD

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

The month with the highest number of snowfall days is February (3.9 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
Wynnewood, MD

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in September: 9h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

Average sunshine days in September
Wynnewood, MD

Average sunshine days in September - Wynnewood, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

Average UV index in September
Wynnewood, MD

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

Average cloud cover in September
Wynnewood, MD

Average cloud cover in September - Wynnewood, MD
  • 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 29).

Average visibility in September
Wynnewood, MD

Average visibility in September - Wynnewood, 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).

Wynnewood, Maryland, USA

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