September weather forecast
New Windsor, MD

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Weather in September

September, the first month of the autumn in New Windsor, is also a moderately hot month, with temperature in the range of an average low of 57°F (13.9°C) and an average high of 75°F (23.9°C).

Temperature

The advent of September brings a slight shift in average high-temperature, moving from a moderately hot 81.7°F (27.6°C) in August to a still warm 75°F (23.9°C). New Windsor witnesses a consistent average low-temperature of 57°F (13.9°C) throughout September.

Humidity

In September, the average relative humidity in New Windsor, Maryland, is 79%.

Rainfall

In New Windsor, during September, the rain falls for 13.8 days and regularly aggregates up to 2.44" (62mm) of precipitation. In New Windsor, during the entire year, the rain falls for 158.9 days and collects up to 32.68" (830mm) of precipitation.

Snowfall

In New Windsor, snow does not fall in May through September.

Daylight

The average length of the day in September in New Windsor, Maryland, is 12h and 26min.
On the first day of September, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

Sunshine

In New Windsor, the average sunshine in September is 8.7h.

UV index

In September, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum UV index, 4 during September, leads to the following recommendations:
Guard yourself - Avoiding sunburn is suggested. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious.
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Frequently asked questions

What is the temperature in September in New Windsor?

In New Windsor, 75°F (23.9°C) is the average high-temperature and 57°F (13.9°C) is the average low-temperature during September. The average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, in August is calculated to be 87.8°F (31°C).

What is the average humidity in September in New Windsor?

In September, the average relative humidity is 79%.

How much does it rain in New Windsor in September?

In September, in New Windsor, Maryland, the rain falls for 13.8 days. Throughout September, 2.44" (62mm) of precipitation is accumulated.

When it does not snow in New Windsor?

In New Windsor, Maryland, snow does not fall in May through September.

Does it snow in New Windsor in September?

In New Windsor, Maryland, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September in New Windsor?

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

When is the sunrise / sunset in September in New Windsor?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:39 pm. On the last day of the month, in New Windsor, Maryland, sunrise is at 7:04 am and sunset at 6:52 pm EDT.

How long on average sun shines in September in New Windsor?

In New Windsor, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September in New Windsor?

In September, the average daily maximum UV index in New Windsor, Maryland, is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability 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
New Windsor, MD

Average temperature in September - New Windsor, MD
  • Average high temperature in September: 75°F

The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (36.9°F).

  • Average low temperature in September: 57°F

The month with the highest average low temperature is July (65.7°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).

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Average pressure in September
New Windsor, MD

Average pressure in September - New Windsor, MD
  • Average pressure in September: 30.06"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
New Windsor, MD

Average wind speed in September - New Windsor, MD
  • Average wind speed in September: 5.9mph

The windiest months (with the highest average wind speed) are February and March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

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Average humidity in September
New Windsor, MD

Average humidity in September - New Windsor, MD
  • Average humidity in September: 79%

The month with the highest relative humidity is May (81%).
The months with the lowest relative humidity are January, April, July and November (76%).

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Average rainfall in September
New Windsor, MD

Average rainfall in September - New Windsor, MD
  • Average rainfall in September: 2.44"

The wettest month (with the highest rainfall) is August (3.9").
The driest month (with the least rainfall) is February (2.13").

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Average rainfall days in September
New Windsor, MD

Average rainfall days in September - New Windsor, MD
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (8.4 days).

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Average snowfall in September
New Windsor, MD

Average snowfall in September - New Windsor, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is March (4.06").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in September
New Windsor, MD

Average snowfall days in September - New Windsor, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
New Windsor, MD

Average daylight in September / Average sunshine in September - New Windsor, 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 24min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

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Average sunshine days in September
New Windsor, MD

Average sunshine days in September - New Windsor, MD
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is July (11.6 days).

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Average UV index in September
New Windsor, MD

Average UV index in September - New Windsor, MD
  • Average UV index in September: 4

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).

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Average cloud cover in September
New Windsor, MD

Average cloud cover in September - New Windsor, MD
  • Average cloud cover in September: 39

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in September
New Windsor, MD

Average visibility in September - New Windsor, MD
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

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New Windsor, Maryland, USA

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