September weather forecast
Perryman, MD

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Weather in September

September, the first month of the autumn in Perryman, is also a moderately hot month, with temperature in the range of an average high of 76.5°F (24.7°C) and an average low of 60.3°F (15.7°C).

Temperature

As August makes way for September, Perryman's average high-temperature eases from 82.8°F (28.2°C) to a still moderately hot 76.5°F (24.7°C). Throughout September, Perryman records an average temperature of 60.3°F (15.7°C) at night.

Humidity

The average relative humidity in September is 78%.

Rainfall

In Perryman, in September, it is raining for 12.8 days, with typically 2.13" (54mm) of accumulated precipitation. In Perryman, during the entire year, the rain falls for 153 days and collects up to 30.39" (772mm) of precipitation.

Snowfall

In Perryman, snow does not fall in April, June through October.

Daylight

In September, the average length of the day in Perryman is 12h and 26min.
On the first day of September, sunrise is at 6:33 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm EDT.

Sunshine

In September, the average sunshine is 9h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: In September, the maximum UV index of 5 translates into these guidelines:
Heed the precautions - Suggestions to avoid sunburn are made. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in September in Perryman?

During September, Perryman experiences an average high-temperature of 76.5°F (24.7°C) and a low-temperature of 60.3°F (15.7°C). The average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, in August is appraised at 89.6°F (32°C).

What is the average humidity in September in Perryman?

In September, the average relative humidity is 78%.

How much does it rain in September?

In September, the rain falls for 12.8 days. Throughout September, 2.13" (54mm) of precipitation is accumulated.

When it does not snow?

April, June through October are months without snowfall.

How many hours of daylight does Perryman have in September?

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

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:33 am and sunset at 7:35 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm EDT.

How many hours of sunshine does Perryman have in September?

The average sunshine duration in September is 9h.

What is the UV index intensity in September?

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate health threat 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
Perryman, MD

Average temperature in September - Perryman, MD
  • Average high temperature in September: 76.5°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (38.3°F).

  • Average low temperature in September: 60.3°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

Average pressure in September
Perryman, MD

Average pressure in September - Perryman, MD
  • Average pressure in September: 30.05"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in September
Perryman, MD

Average wind speed in September - Perryman, MD
  • Average wind speed in September: 6.2mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in September
Perryman, MD

Average humidity in September - Perryman, MD
  • Average humidity in September: 78%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are March, April and November (74%).

Average rainfall in September
Perryman, MD

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

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.85").

Average rainfall days in September
Perryman, MD

Average rainfall days in September - Perryman, MD
  • Average rainfall days in September: 12.8 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (7.5 days).

Average snowfall in September
Perryman, MD

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

The month with the highest snowfall is January (2.17").
The months with the least snowfall are April, June, July, August, September and October (0").

Average snowfall days in September
Perryman, MD

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

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are April, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
Perryman, MD

Average daylight in September / Average sunshine in September - Perryman, 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 42min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in September
Perryman, MD

Average sunshine days in September - Perryman, MD
  • Average sunshine days in September: 14.8 days

The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.9 days).

Average UV index in September
Perryman, MD

Average UV index in September - Perryman, 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).

Average cloud cover in September
Perryman, MD

Average cloud cover in September - Perryman, MD
  • Average cloud cover in September: 36

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in September
Perryman, MD

Average visibility in September - Perryman, 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).

Perryman, Maryland, USA

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