September weather forecast
Detour, MD

Weather in September

September, the first month of the autumn, in Detour, is also a moderately hot month, with temperature in the range of an average low of 56.7°F (13.7°C) and an average high of 75.2°F (24°C).

Temperature

In Detour, the average high-temperature in September slightly decreases, from 81.9°F (27.7°C) in August, to a still warm 75.2°F (24°C). In September, in Detour, the average low-temperature is 56.7°F (13.7°C).

Humidity

In Detour, the average relative humidity is 79%.

Rainfall

In Detour, during September, the rain falls for 14.5 days and regularly aggregates up to 2.13" (54mm) of precipitation. Throughout the year, there are 157.5 rainfall days, and 27.52" (699mm) of precipitation is accumulated.

Snowfall

June through September are months without snowfall in Detour.

Daylight

In Detour, the average length of the day is 12.4h.

Sunshine

In Detour, the average sunshine in September is 8.9h.

UV index

In Detour, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. 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 Detour?

The average relative humidity in September in Detour is 79%.

How much does it rain in Detour in September?

In Detour, Maryland, in September, during 14.5 rainfall days, 2.13" (54mm) of precipitation is typically accumulated.

When it does not snow in Detour?

June through September are months without snowfall in Detour, Maryland.

Does it snow in Detour in September?

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

What is the average length of the day in September in Detour?

In September, the average length of the day in Detour is 12.4h.

How many hours of sunshine does Detour have in September?

In September, the average sunshine in Detour, Maryland, is 8.9h.

What is the UV index reading in September in Detour?

The average daily maximum UV index in September in Detour, Maryland, is 4. A UV Index reading of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in September
Detour, MD

Average temperature in September - Detour, MD
  • Average high temperature in September: 75.2°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in September: 56.7°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in September
Detour, MD

Average pressure in September - Detour, MD
  • Average pressure in September: 30.06"

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
Detour, MD

Average wind speed in September - Detour, MD
  • Average wind speed in September: 5.7mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in September
Detour, MD

Average humidity in September - Detour, MD
  • Average humidity in September: 79%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in September
Detour, MD

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

The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in September
Detour, MD

Average rainfall days in September - Detour, MD
  • Average rainfall days in September: 14.5 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in September
Detour, MD

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

The month with the highest snowfall is March (3.03").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in September
Detour, MD

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

The month with the highest number of snowfall days is January (6.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in September / Average sunshine in September - Detour, 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: 8.9h

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is February (Average sunshine: 4.7h).

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Average sunshine days in September
Detour, MD

Average sunshine days in September - Detour, MD
  • Average sunshine days in September: 13.9 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in September
Detour, MD

Average UV index in September - Detour, MD
  • Average UV index in September: 4

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
Detour, MD

Average cloud cover in September - Detour, MD
  • Average cloud cover in September: 37

Months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in September
Detour, MD

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

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

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