September weather forecast
Perry Hall, MD

Weather in September

September, the first month of the autumn, in Perry Hall, is also a moderately hot month, with temperature in the range of an average low of 61.2°F (16.2°C) and an average high of 76.6°F (24.8°C).

Temperature

In Perry Hall, the average high-temperature slightly decreases, from 82.8°F (28.2°C) in August, to a still warm 76.6°F (24.8°C). In September, the average low-temperature is 61.2°F (16.2°C).

Humidity

In September, the average relative humidity in Perry Hall, Maryland, is 76%.

Rainfall

In Perry Hall, during September, the rain falls for 13.3 days and regularly aggregates up to 2.24" (57mm) of precipitation. In Perry Hall, during the entire year, the rain falls for 156.8 days and collects up to 30.67" (779mm) of precipitation.

Snowfall

April through October are months without snowfall in Perry Hall, Maryland.

Daylight

In Perry Hall, the average length of the day is 12.4h.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in Perry Hall is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the average humidity in September in Perry Hall?

The average relative humidity in September is 76%.

How many days does it rain in September in Perry Hall?

In September, in Perry Hall, the rain falls for 13.3 days. Throughout September, 2.24" (57mm) of precipitation is accumulated.

When it does not snow in Perry Hall?

April through October are months without snowfall in Perry Hall.

How many hours of daylight does Perry Hall have in September?

The average length of the day in September in Perry Hall is 12.4h.

How many hours of sunshine does Perry Hall have in September?

The average sunshine in September is 9.2h.

How high is the UV index in September in Perry Hall?

In September, the average daily maximum UV index in Perry Hall, Maryland, is 5. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV rays.

Average temperature in September
Perry Hall, MD

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

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (38.5°F).

  • Average low temperature in September: 61.2°F

The month with the highest average low temperature is July (69.3°F).
The coldest month (with the lowest average low temperature) is January (27°F).

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Average pressure in September
Perry Hall, MD

Average pressure in September - Perry Hall, MD
  • Average pressure in September: 30.05"

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

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Average wind speed in September
Perry Hall, MD

Average wind speed in September - Perry Hall, MD
  • Average wind speed in September: 6.6mph

The windiest months (with the highest average wind speed) are January, February and March (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

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Average humidity in September
Perry Hall, MD

Average humidity in September - Perry Hall, MD
  • Average humidity in September: 76%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is April (73%).

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Average rainfall in September
Perry Hall, MD

Average rainfall in September - Perry Hall, MD
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is January (1.85").

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Average rainfall days in September
Perry Hall, MD

Average rainfall days in September - Perry Hall, MD
  • Average rainfall days in September: 13.3 days

Months with the highest number of rainy days are May and July (17.6 days).
The month with the least rainy days is January (7.9 days).

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Average snowfall in September
Perry Hall, MD

Average snowfall in September - Perry Hall, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (1.85").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Perry Hall, MD

Average snowfall days in September - Perry Hall, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (3.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Perry Hall, MD

Average daylight in September / Average sunshine in September - Perry Hall, MD
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in September: 9.2h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is February (Average sunshine: 5h).

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Average sunshine days in September
Perry Hall, MD

Average sunshine days in September - Perry Hall, MD
  • Average sunshine days in September: 14.5 days

The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in September
Perry Hall, MD

Average UV index in September - Perry Hall, MD
  • Average UV index in September: 5

Months with the highest UV index are May, June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Perry Hall, MD

Average cloud cover in September - Perry Hall, MD
  • Average cloud cover in September: 34

Months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 30).

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Average visibility in September
Perry Hall, MD

Average visibility in September - Perry Hall, MD
  • Average visibility in September: 6mi

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

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