September weather forecast
La Plata, MD

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Weather in September

September in La Plata is marked by a noticeable drop in temperatures, offering a respite from the pervading summer heat. Marked with a significant reduction in average rainfall, September records approximately 2.05" (52mm) dispersed over a span of 12.1 days. The cooler temperatures, which span from 78.6°F (25.9°C) during the day to 61.9°F (16.6°C) during the night, denote a shift to autumn. Distinctly different from August, the average wind speed begins to rise, measuring around 5.8mph (9.3km/h). September bears a lesser burden of humidity compared to October, carrying an average relative humidity of about 77%.

Temperature

With September's onset, the weather reveals a slight temperature decrease, transitioning from a moderately hot 85.1°F (29.5°C) in August to a still warm 78.6°F (25.9°C). During September, La Plata experiences a consistent low-temperature average of 61.9°F (16.6°C).

Humidity

In La Plata, the average relative humidity in September is 77%.

Rainfall

In La Plata, in September, it is raining for 12.1 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, in La Plata, there are 151.4 rainfall days, and 29.33" (745mm) of precipitation is accumulated.

Snowfall

In La Plata, snow does not fall in May through October.

Daylight

In September, the average length of the day in La Plata is 12h and 25min.
On the first day of the month, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of September, in La Plata, Maryland, sunrise is at 7:03 am and sunset at 6:51 pm EDT.

Sunshine

In September, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high daily UV index of 5 during September translates into the following directions:
Undertake protective steps - Recommendations to avoid sunburn are issued. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Tightly woven clothing, when worn loosely, shields effectively against the Sun.
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Frequently asked questions

What is the usual temperature for La Plata in September?

In La Plata, 78.6°F (25.9°C) is the average high-temperature and 61.9°F (16.6°C) is the average low-temperature during September. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is estimated at 95°F (35°C).

What is the average humidity in September in La Plata?

In La Plata, the average relative humidity in September is 77%.

How much does it rain in La Plata in September?

In La Plata, in September, during 12.1 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow in La Plata?

In La Plata, Maryland, snow does not fall in May through October.

How many hours of daylight does La Plata have in September?

The average day length in September in La Plata is 12h and 25min.

What time are sunrise and sunset in September in La Plata?

In September, on the first day of the month, sunrise is at 6:37 am and sunset at 7:37 pm. On the last day of the month, in La Plata, Maryland, sunrise is at 7:03 am and sunset at 6:51 pm EDT.

How many hours of sunshine does La Plata have in September?

In September, the average sunshine duration in La Plata is 8.7h.

What is the UV index reading in September in La Plata?

In La Plata, Maryland, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a medium health risk from unsafe 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
La Plata, MD

Average temperature in September - La Plata, MD
  • Average high temperature in September: 78.6°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in September: 61.9°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in September
La Plata, MD

Average pressure in September - La Plata, 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 (29.95"Hg).

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Average wind speed in September
La Plata, MD

Average wind speed in September - La Plata, MD
  • Average wind speed in September: 5.8mph

The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.2mph).

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Average humidity in September
La Plata, MD

Average humidity in September - La Plata, MD
  • Average humidity in September: 77%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March and April (73%).

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Average rainfall in September
La Plata, MD

Average rainfall in September - La Plata, MD
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is August (3.31").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in September
La Plata, MD

Average rainfall days in September - La Plata, MD
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is November (8.7 days).

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Average snowfall in September
La Plata, MD

Average snowfall in September - La Plata, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.32").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
La Plata, MD

Average snowfall days in September - La Plata, 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
La Plata, MD

Average daylight in September / Average sunshine in September - La Plata, 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 30min).

  • Average sunshine in September: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are February and December (Average sunshine: 5h and 0min).

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Average sunshine days in September
La Plata, MD

Average sunshine days in September - La Plata, MD
  • Average sunshine days in September: 15.7 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.4 days).

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Average UV index in September
La Plata, MD

Average UV index in September - La Plata, 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 and December (UV index 2).

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Average cloud cover in September
La Plata, MD

Average cloud cover in September - La Plata, MD
  • Average cloud cover in September: 38

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in September
La Plata, MD

Average visibility in September - La Plata, MD
  • Average visibility in September: 6mi

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

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La Plata, Maryland, USA

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