September weather forecast
Martin's Additions, MD

Weather in September

September, the first month of the autumn, in Martin's Additions, is still a warm month, with average temperature varying between 78.4°F (25.8°C) and 61.5°F (16.4°C).

Temperature

In Martin's Additions, Maryland, the average high-temperature slightly decreases, from a moderately hot 85.8°F (29.9°C) in August, to a still warm 78.4°F (25.8°C). The average low-temperature, in Martin's Additions, Maryland, is 61.5°F (16.4°C).

Humidity

In September, the average relative humidity in Martin's Additions, Maryland, is 73%.

Rainfall

In September, the rain falls for 12.5 days. Throughout September, 2.05" (52mm) of precipitation is accumulated. In Martin's Additions, during the entire year, the rain falls for 150.3 days and collects up to 28.66" (728mm) of precipitation.

Snowfall

May through October are months without snowfall in Martin's Additions.

Daylight

In September, the average length of the day in Martin's Additions is 12.4h.

Sunshine

The average sunshine is 8.8h.

UV index

In Martin's Additions, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Martin's Additions?

The average relative humidity in September in Martin's Additions is 73%.

How much does it rain in Martin's Additions in September?

In Martin's Additions, Maryland, in September, it is raining for 12.5 days, with typically 2.05" (52mm) of accumulated precipitation.

When it does not snow in Martin's Additions?

In Martin's Additions, Maryland, snow does not fall in May through October.

What is the average length of the day in September in Martin's Additions?

In September, the average length of the day in Martin's Additions is 12.4h.

How many hours of sunshine does Martin's Additions have in September?

In Martin's Additions, the average sunshine in September is 8.8h.

What is the UV index reading in September in Martin's Additions?

The average daily maximum UV index in September in Martin's Additions, Maryland, is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unsafe exposure to the Sun's UV rays.

Average temperature in September
Martin's Additions, MD

Average temperature in September - Martin
  • Average high temperature in September: 78.4°F

The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.9°F).

  • Average low temperature in September: 61.5°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).

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Average pressure in September
Martin's Additions, MD

Average pressure in September - Martin
  • Average pressure in September: 30.05"

The month with the highest atmospheric pressure is November (30.14").
The month with the lowest atmospheric pressure is June (29.95").

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Average wind speed in September
Martin's Additions, MD

Average wind speed in September - Martin
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).

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Average humidity in September
Martin's Additions, MD

Average humidity in September - Martin
  • Average humidity in September: 73%

The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).

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Average rainfall in September
Martin's Additions, MD

Average rainfall in September - Martin
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.69").

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Average rainfall days in September
Martin's Additions, MD

Average rainfall days in September - Martin
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in September
Martin's Additions, MD

Average snowfall in September - Martin
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.6").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Martin's Additions, MD

Average snowfall days in September - Martin
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.4 days).
Months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in September /
Average sunshine in September
Martin's Additions, MD

Average daylight in September / Average sunshine in September - Martin
  • 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: 9.5h).

  • Average sunshine in September: 8.8h

The month with the most sunshine is July (Average sunshine: 10.7h).
Months with the least sunshine are January, February and December (Average sunshine: 5).

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Average sunshine days in September
Martin's Additions, MD

Average sunshine days in September - Martin
  • Average sunshine days in September: 15.8 days

The month with the most sunshine days is November (20.4 days).
Months with the least sunshine days are May and July (12.3 days).

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Average UV index in September
Martin's Additions, MD

Average UV index in September - Martin
  • 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, November and December (UV index 2).

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Average cloud cover in September
Martin's Additions, MD

Average cloud cover in September - Martin
  • Average cloud cover in September: 37

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Martin's Additions, MD

Average visibility in September - Martin
  • Average visibility in September: 6mi

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).

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