September weather forecast
Rosedale, MD

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Weather in September

September, the first month of the autumn in Rosedale, is still a warm month, with an average temperature ranging between min 61.3°F (16.3°C) and max 76.6°F (24.8°C).

Temperature

With the commencement of September, Rosedale records a moderate temperature decline, with the average high easing from August's moderately hot 82.9°F (28.3°C) to a still warm 76.6°F (24.8°C). Rosedale temperatures generally rest at a low of 61.3°F (16.3°C) during the September nights.

Humidity

In September, the average relative humidity is 76%.

Rainfall

In September, the rain falls for 9.8 days. Throughout September, 0.71" (18mm) of precipitation is accumulated. In Rosedale, during the entire year, the rain falls for 127.2 days and collects up to 12.32" (313mm) of precipitation.

Snowfall

April through November are months without snowfall.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the average person.
Note: In September, a daily maximum UV index of 5 leads to the following instructions:
Ensure safety - Imperative it is to shield skin and eyes from damage. When the Sun is at its strongest around midday, find shade and limit exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.

Frequently asked questions

What are September temperatures?

The high-temperature, in September, in Rosedale, is 76.6°F (24.8°C), while the low-temperature averages to 61.3°F (16.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which combines relative humidity and air temperature, in August is estimated at 89.6°F (32°C).

What is the average humidity in September?

In Rosedale, the average relative humidity in September is 76%.

How many days does it rain in September?

In September, the rain falls for 9.8 days. Throughout September, 0.71" (18mm) of precipitation is accumulated.

When it does not snow?

April through November are months without snowfall.

How many hours of daylight does Rosedale have in September?

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

What time are sunrise and sunset in September?

On the first day of September, sunrise is at 6:35 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:01 am and sunset at 6:49 pm EDT.

How many hours of sunshine does Rosedale have in September?

The average sunshine duration in September is 9.2h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
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
Rosedale, MD

Average temperature in September - Rosedale, 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: 61.3°F

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27°F).

Average pressure in September
Rosedale, MD

Average pressure in September - Rosedale, 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
Rosedale, MD

Average wind speed in September - Rosedale, 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 month (with the lowest average wind speed) is July (5.8mph).

Average humidity in September
Rosedale, MD

Average humidity in September - Rosedale, MD
  • Average humidity in September: 76%

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

Average rainfall in September
Rosedale, MD

Average rainfall in September - Rosedale, MD
  • Average rainfall in September: 0.71"

The wettest month (with the highest rainfall) is August (2.01").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in September
Rosedale, MD

Average rainfall days in September - Rosedale, MD
  • Average rainfall days in September: 9.8 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is November (6.3 days).

Average snowfall in September
Rosedale, MD

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

The month with the highest snowfall is January (0.75").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Rosedale, MD

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

The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

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

  • Average sunshine in September: 9h and 1min

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).

Average sunshine days in September
Rosedale, MD

Average sunshine days in September - Rosedale, MD
  • Average sunshine days in September: 17.8 days

The month with the most sunshine days is November (22.3 days).
The month with the least sunshine days is July (12.9 days).

Average UV index in September
Rosedale, MD

Average UV index in September - Rosedale, 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
Rosedale, MD

Average cloud cover in September - Rosedale, MD
  • Average cloud cover in September: 34

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

Average visibility in September
Rosedale, MD

Average visibility in September - Rosedale, 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).

Rosedale, Maryland, USA

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