September weather forecast
Mondell, MD

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Weather in September

The first month of the autumn, September, is still a warm month in Mondell, Maryland, with an average temperature ranging between max 76.1°F (24.5°C) and min 56.8°F (13.8°C).

Temperature

The transition to September results in a modest reduction in average high-temperature, moving from 83.3°F (28.5°C) in August to a still warm 76.1°F (24.5°C). Mondell's average low-temperature is measured at a refreshing 56.8°F (13.8°C) during September.

Humidity

In Mondell, the average relative humidity in September is 78%.

Rainfall

In Mondell, in September, it is raining for 13.5 days, with typically 2.09" (53mm) of accumulated precipitation. In Mondell, during the entire year, the rain falls for 162.4 days and collects up to 30.16" (766mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Mondell, the average length of the day in September 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 7:06 am and sunset at 6:54 pm EDT.

Sunshine

In September, the average sunshine in Mondell is 8.7h.

UV index

In Mondell, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: A maximum high daily UV index of 4 during September translates into the following directions:
Put precautions into practice - Guidance to elude sunburn is provided. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.

Frequently asked questions

What are the temperatures in September?

The average high-temperature and low-temperature during September are 76.1°F (24.5°C) and 56.8°F (13.8°C) respectively. In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is computed to be 91.4°F (33°C).

What is the average humidity in September?

In Mondell, the average relative humidity in September is 78%.

How much does it rain in September?

In Mondell, in September, during 13.5 rainfall days, 2.09" (53mm) of precipitation is typically accumulated.

When it does not snow in Mondell?

May through September are months without snowfall.

Does it snow in September?

In Mondell, in September, it doesn't snow. In October, it regularly snows.

What is the average length of the day in September?

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

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:41 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 6:54 pm EDT.

How many hours of sunshine does Mondell have in September?

In Mondell, the average sunshine duration in September is 8.7h.

What is the UV index intensity in September?

In Mondell, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health 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
Mondell, MD

Average temperature in September - Mondell, 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 (37°F).

  • Average low temperature in September: 56.8°F

The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in September
Mondell, MD

Average pressure in September - Mondell, 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).

Average wind speed in September
Mondell, MD

Average wind speed in September - Mondell, MD
  • Average wind speed in September: 5.1mph

The windiest months (with the highest average wind speed) are January, February and March (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in September
Mondell, MD

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

The months with the highest relative humidity are May, October and December (79%).
The month with the lowest relative humidity is July (74%).

Average rainfall in September
Mondell, MD

Average rainfall in September - Mondell, MD
  • Average rainfall in September: 2.09"

The wettest month (with the highest rainfall) is July (3.27").
The driest month (with the least rainfall) is January (1.97").

Average rainfall days in September
Mondell, MD

Average rainfall days in September - Mondell, MD
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is November (9.4 days).

Average snowfall in September
Mondell, MD

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

The month with the highest snowfall is January (4.72").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September
Mondell, MD

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

The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Mondell, 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 4min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in September
Mondell, MD

Average sunshine days in September - Mondell, MD
  • Average sunshine days in September: 14.7 days

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is April (11 days).

Average UV index in September
Mondell, MD

Average UV index in September - Mondell, 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).

Average cloud cover in September
Mondell, MD

Average cloud cover in September - Mondell, MD
  • Average cloud cover in September: 39

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in September
Mondell, MD

Average visibility in September - Mondell, MD
  • Average visibility in September: 5mi

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

Mondell, Maryland, USA

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