September weather forecast
Cambridge, MD

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A long pier leading the large and highly set Choptank River Lighthouse in Cambridge, Maryland
A long pier leading the large and highly set Choptank River Lighthouse in Cambridge, Maryland

Weather in September

September in Cambridge, Maryland, welcomes the onset of meteorological autumn, causing a noticeable shift in weather patterns. The scorching summer heat begins to dissipate, making way for the milder, more pleasant climatic conditions of fall. September's weather is comparatively milder and significantly less humid than August's, bringing a welcomed relief from the summer. The peak temperature bears a dip, averaging a high of 77.5°F (25.3°C), signaling the approaching fall. As autumn leaves start to fall, the backdrop of Cambridge dons a reddish-golden hue, making September a photographer's paradise.

Temperature

September's arrival in Cambridge, Maryland, subtly correlates with a reduction in the average high-temperature, down from 83.1°F (28.4°C) in August to a still warm 77.5°F (25.3°C). In the month of September, an average of 64°F (17.8°C) marks the low-temperature in Cambridge.

Humidity

The average relative humidity in September in Cambridge is 78%.

Rainfall

September is the month with the least rainfall. Rain falls for 9.5 days and accumulates 0.47" (12mm) of precipitation.

Snowfall

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

Ocean temperature

In Cambridge, the average seawater temperature in September is 69.8°F (21°C).
Note: The majority of individuals find it unpleasurable to swim in 69.8°F (21°C). It becomes progressively harder to manage one's breathing as the water temperature falls below 69.8°F (21°C).

Daylight

In Cambridge, Maryland, the average length of the day in September is 12h and 25min.
On the first day of September, sunrise is at 6:34 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:48 pm EDT.

Sunshine

In Cambridge, the average sunshine in September is 9.2h.

UV index

The average daily maximum UV index in September is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Put precautions into practice - Guidance to elude sunburn is provided. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
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Frequently asked questions

What is the usual temperature for Cambridge in September?

The average high-temperature and low-temperature in Cambridge, Maryland, during September are 77.5°F (25.3°C) and 64°F (17.8°C) respectively. In August, the average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, is estimated at 91.4°F (33°C).

What is the average humidity in September in Cambridge?

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

What is the driest month in Cambridge?

The month with the least rainfall in Cambridge, Maryland, is September, when the rain falls for 9.5 days and typically collects 0.47" (12mm) of precipitation.

How many days does it rain in September in Cambridge?

In Cambridge, Maryland, during September, the rain falls for 9.5 days and regularly aggregates up to 0.47" (12mm) of precipitation.

When it does not snow in Cambridge?

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

What is the ocean temperature in September in Cambridge?

In September, the average ocean temperature in Cambridge, Maryland, is 69.8°F (21°C). For most, swimming in 69.8°F (21°C) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 69.8°F (21°C) to 59°F (15°C).

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

In September, the average day length in Cambridge is 12h and 25min.

What time are sunrise and sunset in September in Cambridge?

In September, on the first day of the month, sunrise is at 6:34 am and sunset at 7:33 pm. On the last day of the month, sunrise is at 6:59 am and sunset at 6:48 pm EDT.

How long on average sun shines in September in Cambridge?

In September, the average sunshine duration in Cambridge, Maryland, is 9.2h.

What is the UV index reading in September in Cambridge?

In September, the average daily maximum UV index in Cambridge is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASeptemberOND
Aug
September
Oct
Average high temperature
83.1°F 28.4°C
77.5°F 25.3°C
67.1°F 19.5°C
Average low temperature
69.4°F 20.8°C
64°F 17.8°C
54.5°F 12.5°C
Average pressure
29.99" 762mmHg
30.04" 763mmHg
30.03" 763mmHg
Average wind speed
6.3mph 10.1km/h
7.3mph 11.7km/h
8.6mph 13.8km/h
Average max. wind speed
6.8mph 10.9km/h
7.6mph 12.2km/h
9.3mph 15km/h
Average wind speed gusts
10.4mph 16.7km/h
11.7mph 18.8km/h
14.3mph 23km/h
Average humidity
77%
78%
76%
Average rainfall
1.46" 37mm
0.47" 12mm
1.14" 29mm
Average rainfall days
11.6
9.5
8.1
Average snowfall
0" 0mm
0" 0mm
0" 0mm
Average snowfall days
0
0
0
Average sea temperature
73°F 22.8°C
70°F 21.1°C
63°F 17.2°C
Average daylight
13h 4min
12h 2min
11h 1min
Average sunshine
10h 2min
9h 1min
5h 4min
Average sunshine days
16.8
18.9
21.3
Average UV index
6
5
4
Average cloud cover
30%
34%
37%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in September
Cambridge, MD

Average temperature in September - Cambridge, MD
  • Average high temperature in September: 77.5°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 (41.2°F).

  • Average low temperature in September: 64°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (30.2°F).

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Average pressure in September
Cambridge, MD

Average pressure in September - Cambridge, MD
  • Average pressure in September: 30.04"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
Cambridge, MD

Average wind speed in September - Cambridge, MD
  • Average wind speed in September: 7.3mph

The windiest month (with the highest average wind speed) is February (10mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in September
Cambridge, MD

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (73%).

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Average rainfall in September
Cambridge, MD

Average rainfall in September - Cambridge, MD
  • Average rainfall in September: 0.47"

The wettest month (with the highest rainfall) is August (1.46").
The driest month (with the least rainfall) is September (0.47").

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Average rainfall days in September
Cambridge, MD

Average rainfall days in September - Cambridge, MD
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is August (11.6 days).
The months with the least rainy days are January and November (6.3 days).

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Average snowfall in September
Cambridge, MD

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

The month with the highest snowfall is December (0.51").
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
Cambridge, MD

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

The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average sea temperature in September
Cambridge, MD

Average sea temperature in September - Cambridge, MD
  • Average sea temperature in September: 70°F

The best month for swimming (with the highest average sea temperature) is August (73°F).
The coldest month (with the lowest average sea temperature) is February (34°F).

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

Average daylight in September / Average sunshine in September - Cambridge, 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 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

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Average sunshine days in September
Cambridge, MD

Average sunshine days in September - Cambridge, MD
  • Average sunshine days in September: 18.9 days

The month with the most sunshine days is November (22.2 days).
The month with the least sunshine days is August (16.8 days).

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Average UV index in September
Cambridge, MD

Average UV index in September - Cambridge, 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
Cambridge, MD

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

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in September
Cambridge, MD

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

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