September weather forecast
Stevenson, MD

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Weather in September

September, the first month of the autumn in Stevenson, is also a moderately hot month, with an average temperature fluctuating between 76.6°F (24.8°C) and 60.6°F (15.9°C).

Temperature

September signifies a minor drop in average high-temperature, transitioning from a warm 83.1°F (28.4°C) in August to a still moderately hot 76.6°F (24.8°C). Stevenson anticipates an average minimum temperature of 60.6°F (15.9°C) in the month of September.

Humidity

The average relative humidity in September is 75%.

Rainfall

In September, in Stevenson, the rain falls for 13.8 days. Throughout September, 2.32" (59mm) of precipitation is accumulated. In Stevenson, during the entire year, the rain falls for 160.9 days and collects up to 31.42" (798mm) of precipitation.

Snowfall

May through October are months without snowfall in Stevenson.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:35 am and sunset at 7:37 pm. On the last day of September, in Stevenson, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

Sunshine

In September, the average sunshine in Stevenson is 9h.

UV index

In September, the average daily maximum UV index in Stevenson, Maryland, is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The average daily UV index of 5 in September transforms into the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
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Frequently asked questions

What are the temperatures in Stevenson in September?

The average high-temperature and low-temperature in Stevenson during September are 76.6°F (24.8°C) and 60.6°F (15.9°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in September in Stevenson?

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

How many days does it rain in September in Stevenson?

In Stevenson, Maryland, in September, it is raining for 13.8 days, with typically 2.32" (59mm) of accumulated precipitation.

When it does not snow in Stevenson?

May through October are months without snowfall.

What is the average length of the day in September in Stevenson?

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

What time are sunrise and sunset in September in Stevenson?

In September, on the first day of the month, sunrise is at 6:35 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 Stevenson have in September?

The average sunshine duration in September in Stevenson is 9h.

How high is the UV index in September in Stevenson?

In Stevenson, the average daily maximum UV index in September is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Stevenson, MD

Average temperature in September - Stevenson, MD
  • Average high temperature in September: 76.6°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in September: 60.6°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).

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Average pressure in September
Stevenson, MD

Average pressure in September - Stevenson, 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
Stevenson, MD

Average wind speed in September - Stevenson, MD
  • Average wind speed in September: 6.3mph

The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).

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Average humidity in September
Stevenson, MD

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

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is July (72%).

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Average rainfall in September
Stevenson, MD

Average rainfall in September - Stevenson, MD
  • Average rainfall in September: 2.32"

The wettest month (with the highest rainfall) is August (3.94").
The driest months (with the least rainfall) are January and February (2.01").

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Average rainfall days in September
Stevenson, MD

Average rainfall days in September - Stevenson, MD
  • Average rainfall days in September: 13.8 days

The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (8.8 days).

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Average snowfall in September
Stevenson, MD

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

The month with the highest snowfall is March (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Stevenson, MD

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

The months with the highest number of snowfall days are January and February (5.3 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
Stevenson, MD

Average daylight in September / Average sunshine in September - Stevenson, 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: 9h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in September
Stevenson, MD

Average sunshine days in September - Stevenson, MD
  • Average sunshine days in September: 14.2 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.7 days).

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Average UV index in September
Stevenson, MD

Average UV index in September - Stevenson, 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).

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Average cloud cover in September
Stevenson, MD

Average cloud cover in September - Stevenson, 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 30).

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Average visibility in September
Stevenson, MD

Average visibility in September - Stevenson, 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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Stevenson, Maryland, USA

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