September weather forecast
Crofton, MD

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Weather in September

September, the first month of the autumn in Crofton, is still a warm month, with an average temperature fluctuating between 77.9°F (25.5°C) and 62.8°F (17.1°C).

Temperature

September indicates a minor shift in the average high-temperature, from August's 84.4°F (29.1°C) to a still warm 77.9°F (25.5°C). The nights of September in Crofton anticipate an average low-temperature of 62.8°F (17.1°C).

Humidity

In September, the average relative humidity in Crofton is 74%.

Rainfall

In Crofton, during September, the rain falls for 12.6 days and regularly aggregates up to 2.13" (54mm) of precipitation. In Crofton, Maryland, during the entire year, the rain falls for 156.7 days and collects up to 31.81" (808mm) of precipitation.

Snowfall

In Crofton, snow does not fall in May through October.

Daylight

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

Sunshine

In September, the average sunshine is 9.1h.

UV index

In Crofton, the average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: The daily high UV index of 5 in September translates into this advice:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
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Frequently asked questions

What is the usual temperature for Crofton in September?

Crofton in September has an average high-temperature of 77.9°F (25.5°C) and an average low-temperature of 62.8°F (17.1°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in August is calculated to be 93.2°F (34°C).

What is the average humidity in September in Crofton?

In Crofton, the average relative humidity in September is 74%.

How much does it rain in Crofton in September?

In Crofton, Maryland, during September, the rain falls for 12.6 days and regularly aggregates up to 2.13" (54mm) of precipitation.

When it does not snow in Crofton?

May through October are months without snowfall.

How many hours of daylight does Crofton have in September?

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

When is the sunrise / sunset in September in Crofton?

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

How long on average sun shines in September in Crofton?

The average sunshine duration in September in Crofton is 9.1h.

How high is the UV index in September in Crofton?

In September, the average daily maximum UV index in Crofton, Maryland, is 5. A UV Index reading of 3 to 5 represents a medium health risk from exposure to Sun's UV rays.
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
Crofton, MD

Average temperature in September - Crofton, MD
  • Average high temperature in September: 77.9°F

The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in September: 62.8°F

The month with the highest average low temperature is July (69.8°F).
The coldest month (with the lowest average low temperature) is January (28°F).

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Average pressure in September
Crofton, MD

Average pressure in September - Crofton, 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).

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Average wind speed in September
Crofton, MD

Average wind speed in September - Crofton, MD
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).

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Average humidity in September
Crofton, MD

Average humidity in September - Crofton, MD
  • Average humidity in September: 74%

The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is April (71%).

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Average rainfall in September
Crofton, MD

Average rainfall in September - Crofton, MD
  • Average rainfall in September: 2.13"

The wettest month (with the highest rainfall) is August (3.62").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in September
Crofton, MD

Average rainfall days in September - Crofton, MD
  • Average rainfall days in September: 12.6 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.9 days).

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Average snowfall in September
Crofton, MD

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

The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Crofton, MD

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

The month with the highest number of snowfall days is January (4.3 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
Crofton, MD

Average daylight in September / Average sunshine in September - Crofton, 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 1min

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 0min).

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Average sunshine days in September
Crofton, MD

Average sunshine days in September - Crofton, MD
  • Average sunshine days in September: 16 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (11.5 days).

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Average UV index in September
Crofton, MD

Average UV index in September - Crofton, 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).

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Average cloud cover in September
Crofton, MD

Average cloud cover in September - Crofton, MD
  • Average cloud cover in September: 35

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in September
Crofton, MD

Average visibility in September - Crofton, 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).

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Crofton, Maryland, USA

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