September weather forecast
Chestertown, MD

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Weather in September

September marks the beginning of a more moderate weather phase in Chestertown. Despite the decrease in temperature to highs of 77.2°F (25.1°C) and lows of 61.7°F (16.5°C), rainfall tapers off to an average of 0.43" (11mm) over 8.5 days. The descending heat waves make room for a more comfortable and less humid environment, all the while preserving enough warmth to continue enjoying external activities. Consequently, September strikes a perfect balance between summer and fall, offering the best of both seasons.

Temperature

With the onset of September, Chestertown experiences a modest temperature adjustment, with the average high-temperature gently receding from 82.9°F (28.3°C) in August to a still warm 77.2°F (25.1°C). Chestertown records an average low of 61.7°F (16.5°C) throughout the nights in September.

Humidity

The average relative humidity in September is 77%.

Rainfall

The month with the least rainfall in Chestertown, Maryland, is September, when the rain falls for 8.5 days and typically collects 0.43" (11mm) of precipitation.

Snowfall

In Chestertown, snow does not fall in April through October.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of September, in Chestertown, sunrise is at 7:00 am and sunset at 6:48 pm EDT.

Sunshine

The average sunshine in September is 9.3h.

UV index

In September, the average daily maximum UV index in Chestertown is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The maximum daily UV index of 5 during September translates into the following directions:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation.
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Frequently asked questions

What is the average September temperature in Chestertown?

An average high-temperature, in September, in Chestertown, is 77.2°F (25.1°C) and the average low-temperature is 61.7°F (16.5°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in August is evaluated at 91.4°F (33°C).

What is the average humidity in September in Chestertown?

In Chestertown, the average relative humidity in September is 77%.

What is the driest month in Chestertown?

September is the month with the least rainfall in Chestertown. Rain falls for 8.5 days and accumulates 0.43" (11mm) of precipitation.

How many days does it rain in September in Chestertown?

In September, in Chestertown, Maryland, the rain falls for 8.5 days. Throughout September, 0.43" (11mm) of precipitation is accumulated.

When it does not snow in Chestertown?

In Chestertown, Maryland, snow does not fall in April through October.

How many hours of daylight does Chestertown have in September?

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

When is the sunrise / sunset in September in Chestertown?

On the first day of September in Chestertown, Maryland, sunrise is at 6:33 am and sunset at 7:34 pm. On the last day of the month, sunrise is at 7:00 am and sunset at 6:48 pm EDT.

How long on average sun shines in September in Chestertown?

In Chestertown, Maryland, the average sunshine duration in September is 9.3h.

What is the UV index reading in September in Chestertown?

In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
82.9°F 28.3°C
77.2°F 25.1°C
65.8°F 18.8°C
Average low temperature
67.6°F 19.8°C
61.7°F 16.5°C
52.3°F 11.3°C
Average pressure
29.99" 762mmHg
30.05" 763mmHg
30.03" 763mmHg
Average wind speed
5.7mph 9.2km/h
6.5mph 10.5km/h
7.8mph 12.6km/h
Average max. wind speed
6.2mph 10km/h
6.8mph 10.9km/h
8.6mph 13.8km/h
Average wind speed gusts
9.4mph 15.1km/h
10.6mph 17.1km/h
13.2mph 21.2km/h
Average humidity
78%
77%
77%
Average rainfall
1.42" 36mm
0.43" 11mm
0.94" 24mm
Average rainfall days
11.2
8.5
8.3
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 3min
9h 2min
5h 4min
Average sunshine days
17.4
19.6
21.1
Average UV index
6
5
4
Average cloud cover
30%
34%
38%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in September
Chestertown, MD

Average temperature in September - Chestertown, MD
  • Average high temperature in September: 77.2°F

The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).

  • Average low temperature in September: 61.7°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 (27.9°F).

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Average pressure in September
Chestertown, MD

Average pressure in September - Chestertown, 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
Chestertown, MD

Average wind speed in September - Chestertown, MD
  • Average wind speed in September: 6.5mph

The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).

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Average humidity in September
Chestertown, MD

Average humidity in September - Chestertown, MD
  • Average humidity in September: 77%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).

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Average rainfall in September
Chestertown, MD

Average rainfall in September - Chestertown, MD
  • Average rainfall in September: 0.43"

The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").

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Average rainfall days in September
Chestertown, MD

Average rainfall days in September - Chestertown, MD
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).

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Average snowfall in September
Chestertown, MD

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

The month with the highest snowfall is January (0.59").
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
Chestertown, MD

Average snowfall days in September - Chestertown, 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).

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

Average daylight in September / Average sunshine in September - Chestertown, 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 2min

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 6min).

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Average sunshine days in September
Chestertown, MD

Average sunshine days in September - Chestertown, MD
  • Average sunshine days in September: 19.6 days

The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).

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Average UV index in September
Chestertown, MD

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

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Average cloud cover in September
Chestertown, MD

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

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in September
Chestertown, MD

Average visibility in September - Chestertown, 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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Chestertown, Maryland, USA

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