September weather forecast
Woodburn on the Potomac, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Woodburn on the Potomac, Maryland, with an average temperature ranging between max 76.1°F (24.5°C) and min 56.3°F (13.5°C).

Temperature

The transition into September subtly indicates a reduction in the average high-temperature, down to a still warm 76.1°F (24.5°C) from August's moderately hot 83.1°F (28.4°C). Woodburn on the Potomac observes an average low-temperature of 56.3°F (13.5°C) during September nights.

Humidity

The average relative humidity in September in Woodburn on the Potomac is 78%.

Rainfall

September is the month with the least rainfall in Woodburn on the Potomac. Rain falls for 12.5 days and accumulates 1.61" (41mm) of precipitation.

Snowfall

In Woodburn on the Potomac, snow does not fall in May through October.

Daylight

In September, the average length of the day is 12h and 26min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of September, sunrise is at 7:07 am and sunset at 6:54 pm EDT.

Sunshine

In Woodburn on the Potomac, the average sunshine in September is 8.8h.

UV index

In September, the average daily maximum UV index in Woodburn on the Potomac is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 4 in September translates into the following instructions:
Act with care - The suggestion to avoid sunburn is emphasized. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
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Frequently asked questions

What are the temperatures in Woodburn on the Potomac in September?

In September, in Woodburn on the Potomac, the average high-temperature is 76.1°F (24.5°C), and the average low-temperature is 56.3°F (13.5°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is computed to be 89.6°F (32°C).

What is the average humidity in September in Woodburn on the Potomac?

The average relative humidity in September in Woodburn on the Potomac, Maryland, is 78%.

What is the driest month in Woodburn on the Potomac?

The month with the least rainfall is September, when the rain falls for 12.5 days and typically collects 1.61" (41mm) of precipitation.

How many days does it rain in September in Woodburn on the Potomac?

In Woodburn on the Potomac, Maryland, in September, it is raining for 12.5 days, with typically 1.61" (41mm) of accumulated precipitation.

When it does not snow in Woodburn on the Potomac?

May through October are months without snowfall in Woodburn on the Potomac, Maryland.

How many hours of daylight does Woodburn on the Potomac have in September?

The average day length in September is 12h and 26min.

When are sunrise and sunset in September in Woodburn on the Potomac?

On the first day of September in Woodburn on the Potomac, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:54 pm EDT.

How long on average sun shines in September in Woodburn on the Potomac?

In September, the average sunshine duration in Woodburn on the Potomac is 8.8h.

What is the UV index reading in September in Woodburn on the Potomac?

In Woodburn on the Potomac, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
83.1°F 28.4°C
76.1°F 24.5°C
63.9°F 17.7°C
Average low temperature
62.2°F 16.8°C
56.3°F 13.5°C
46.2°F 7.9°C
Average pressure
30" 762mmHg
30.06" 764mmHg
30.04" 763mmHg
Average wind speed
4.3mph 6.9km/h
4.9mph 7.9km/h
6.1mph 9.8km/h
Average max. wind speed
4.8mph 7.7km/h
5.2mph 8.4km/h
6.8mph 10.9km/h
Average wind speed gusts
7mph 11.3km/h
7.9mph 12.7km/h
9.9mph 15.9km/h
Average humidity
76%
78%
79%
Average rainfall
2.64" 67mm
1.61" 41mm
2.13" 54mm
Average rainfall days
15.7
12.5
12
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 2min
8h 5min
5h 3min
Average sunshine days
13.5
15.1
17.5
Average UV index
6
4
3
Average cloud cover
33%
38%
40%
Average visibility
6mi 9.7km
5mi 8km
5mi 8km

Average temperature in September
Woodburn on the Potomac, MD

Average temperature in September - Woodburn on the Potomac, MD
  • Average high temperature in September: 76.1°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 (36.9°F).

  • Average low temperature in September: 56.3°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

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Average pressure in September
Woodburn on the Potomac, MD

Average pressure in September - Woodburn on the Potomac, 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 (29.95"Hg).

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Average wind speed in September
Woodburn on the Potomac, MD

Average wind speed in September - Woodburn on the Potomac, MD
  • Average wind speed in September: 4.9mph

The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).

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Average humidity in September
Woodburn on the Potomac, MD

Average humidity in September - Woodburn on the Potomac, MD
  • Average humidity in September: 78%

The month with the highest relative humidity is October (79%).
The month with the lowest relative humidity is July (74%).

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Average rainfall in September
Woodburn on the Potomac, MD

Average rainfall in September - Woodburn on the Potomac, MD
  • Average rainfall in September: 1.61"

The wettest month (with the highest rainfall) is May (2.91").
The driest month (with the least rainfall) is September (1.61").

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Average rainfall days in September
Woodburn on the Potomac, MD

Average rainfall days in September - Woodburn on the Potomac, MD
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8.2 days).

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Average snowfall in September
Woodburn on the Potomac, MD

Average snowfall in September - Woodburn on the Potomac, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Woodburn on the Potomac, MD

Average snowfall days in September - Woodburn on the Potomac, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.2 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
Woodburn on the Potomac, MD

Average daylight in September / Average sunshine in September - Woodburn on the Potomac, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

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Average sunshine days in September
Woodburn on the Potomac, MD

Average sunshine days in September - Woodburn on the Potomac, MD
  • Average sunshine days in September: 15.1 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (11.7 days).

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Average UV index in September
Woodburn on the Potomac, MD

Average UV index in September - Woodburn on the Potomac, 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
Woodburn on the Potomac, MD

Average cloud cover in September - Woodburn on the Potomac, MD
  • Average cloud cover in September: 38

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Woodburn on the Potomac, MD

Average visibility in September - Woodburn on the Potomac, MD
  • Average visibility in September: 5mi

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

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Woodburn on the Potomac, Maryland, USA

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