September weather forecast
Calvert Chase, MD

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Weather in September

The first month of the autumn, September, is also a moderately hot month in Calvert Chase, Maryland, with an average temperature ranging between min 64.9°F (18.3°C) and max 76.8°F (24.9°C).

Temperature

September ushers in a minor alteration in Calvert Chase's climate, with the average high-temperature moving from August's 82.9°F (28.3°C) to a still warm 76.8°F (24.9°C). An average low-temperature of 64.9°F (18.3°C) is recorded in the month of September.

Humidity

In September, the average relative humidity is 75%.

Rainfall

In September, in Calvert Chase, Maryland, the rain falls for 10.9 days. Throughout September, 0.83" (21mm) of precipitation is accumulated. In Calvert Chase, during the entire year, the rain falls for 127.2 days and collects up to 11.85" (301mm) of precipitation.

Snowfall

In Calvert Chase, snow does not fall in April through October.

Daylight

The average length of the day in September in Calvert Chase is 12h and 26min.
On the first day of the month, sunrise is at 6:36 am and sunset at 7:36 pm. On the last day of September, in Calvert Chase, Maryland, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: In September, the maximum UV index of 5 transforms into these recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
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Frequently asked questions

What is the usual temperature for Calvert Chase in September?

The high-temperature, in September, in Calvert Chase, is 76.8°F (24.9°C), while the low-temperature averages to 64.9°F (18.3°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 89.6°F (32°C).

What is the average humidity in September in Calvert Chase?

In September, the average relative humidity in Calvert Chase, Maryland, is 75%.

How much does it rain in Calvert Chase in September?

In Calvert Chase, Maryland, in September, during 10.9 rainfall days, 0.83" (21mm) of precipitation is typically accumulated.

When it does not snow in Calvert Chase?

April through October are months without snowfall in Calvert Chase, Maryland.

How many hours of daylight does Calvert Chase have in September?

In Calvert Chase, Maryland, the average day length in September is 12h and 26min.

What time are sunrise and sunset in September in Calvert Chase?

In September, on the first day of the month, sunrise is at 6:36 am and sunset at 7:36 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:50 pm EDT.

How long on average sun shines in September in Calvert Chase?

The average sunshine duration in September in Calvert Chase, Maryland, is 9.2h.

What is the UV index reading in September in Calvert Chase?

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

Average temperature in September - Calvert Chase, MD
  • Average high temperature in September: 76.8°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 (40.5°F).

  • Average low temperature in September: 64.9°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).

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Average pressure in September
Calvert Chase, MD

Average pressure in September - Calvert Chase, 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).

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Average wind speed in September
Calvert Chase, MD

Average wind speed in September - Calvert Chase, MD
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

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Average humidity in September
Calvert Chase, MD

Average humidity in September - Calvert Chase, MD
  • Average humidity in September: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).

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Average rainfall in September
Calvert Chase, MD

Average rainfall in September - Calvert Chase, MD
  • Average rainfall in September: 0.83"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").

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Average rainfall days in September
Calvert Chase, MD

Average rainfall days in September - Calvert Chase, MD
  • Average rainfall days in September: 10.9 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).

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Average snowfall in September
Calvert Chase, MD

Average snowfall in September - Calvert Chase, MD
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Calvert Chase, MD

Average snowfall days in September - Calvert Chase, MD
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (2.6 days).
The 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
Calvert Chase, MD

Average daylight in September / Average sunshine in September - Calvert Chase, MD
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
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 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

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Average sunshine days in September
Calvert Chase, MD

Average sunshine days in September - Calvert Chase, MD
  • Average sunshine days in September: 16.2 days

The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).

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Average UV index in September
Calvert Chase, MD

Average UV index in September - Calvert Chase, 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 and December (UV index 2).

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Average cloud cover in September
Calvert Chase, MD

Average cloud cover in September - Calvert Chase, MD
  • Average cloud cover in September: 33

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

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Average visibility in September
Calvert Chase, MD

Average visibility in September - Calvert Chase, 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).

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Calvert Chase, Maryland, USA

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