October weather forecast
Annapolis, MD

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The Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
The Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome

Weather in October

October marks the full arrival of autumn in Annapolis. The climatic shift is clearly visible with the landscape assuming a palette of vibrant fall colors. As temperatures continue to dip, the crisp autumn air enhances the city’s beauty. Wind speed experiences a slight increase, adding a brisk touch to the weather. Annapolis in October is the epitome of charm with its cooler weather, vibrant foliage, and fewer crowds.

Temperature

With October's arrival, Annapolis's weather changes as the average high-temperature falls from a moderately hot 77°F (25°C) in September to a refreshing 66.2°F (19°C). In October, Annapolis's temperature tends to fall to an average low of 54.5°F (12.5°C) during the night.

Humidity

In Annapolis, the average relative humidity in October is 75%.

Rainfall

In Annapolis, in October, it is raining for 8.8 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

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

Ocean temperature

In Annapolis, the average seawater temperature in October is 66.7°F (19.3°C).
Note: Swimming becomes less enjoyable for most at a surface water temperature of 66.7°F (19.3°C). As the temperature decreases below 69.8°F (21°C), breathing becomes increasingly difficult.

Daylight

In October, the average length of the day is 11h and 10min.
On the first day of the month, sunrise is at 7:02 am and sunset at 6:48 pm. On the last day of October, in Annapolis, sunrise is at 7:32 am and sunset at 6:06 pm EDT.

Sunshine

In October, the average sunshine is 5.7h.

UV index

In Annapolis, the average daily maximum UV index in October is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum daily UV index of 4 in October interprets into the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. 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.

Frequently asked questions

What is the temperature in October?

Annapolis in October has an average high-temperature of 66.2°F (19°C) and an average low-temperature of 54.5°F (12.5°C). In August, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 89.6°F (32°C).

What is the average humidity in October?

The average relative humidity in October in Annapolis is 75%.

How many days does it rain in October?

In Annapolis, in October, during 8.8 rainfall days, 0.87" (22mm) of precipitation is typically accumulated.

When it does not snow?

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

Does it snow in October?

In Annapolis, Maryland, in October, it doesn't snow. In November, it regularly snows.

What is the ocean temperature in October?

In Annapolis, in October, the average water temperature is 66.7°F (19.3°C). For most, swimming in 66.7°F (19.3°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 October?

In October, the average day length is 11h and 10min.

What time are sunrise and sunset in October?

On the first day of October, sunrise is at 7:02 am and sunset at 6:48 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 6:06 pm EDT.

How many hours of sunshine does Annapolis have in October?

In Annapolis, the average sunshine duration in October is 5.7h.

What is the UV index reading in October?

In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to 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 October
Annapolis, MD

Average temperature in October - Annapolis, MD
  • Average high temperature in October: 66.2°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 (40.3°F).

  • Average low temperature in October: 54.5°F

The month with the highest average low temperature is July (72°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).

Average pressure in October
Annapolis, MD

Average pressure in October - Annapolis, MD
  • Average pressure in October: 30.03"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).

Average wind speed in October
Annapolis, MD

Average wind speed in October - Annapolis, MD
  • Average wind speed in October: 9mph

The windiest month (with the highest average wind speed) is January (10mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in October
Annapolis, MD

Average humidity in October - Annapolis, MD
  • Average humidity in October: 75%

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

Average rainfall in October
Annapolis, MD

Average rainfall in October - Annapolis, MD
  • Average rainfall in October: 0.87"

The wettest month (with the highest rainfall) is August (1.69").
The driest month (with the least rainfall) is January (0.47").

Average rainfall days in October
Annapolis, MD

Average rainfall days in October - Annapolis, MD
  • Average rainfall days in October: 8.8 days

The months with the highest number of rainy days are July and August (14.3 days).
The month with the least rainy days is November (5.3 days).

Average snowfall in October
Annapolis, MD

Average snowfall in October - Annapolis, MD
  • Average snowfall in October: 0"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in October
Annapolis, MD

Average snowfall days in October - Annapolis, MD
  • Average snowfall days in October: 0 days

The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in October
Annapolis, MD

Average sea temperature in October - Annapolis, MD
  • Average sea temperature in October: 66.7°F

The best month for swimming (with the highest average sea temperature) is August (77.8°F).
The coldest month (with the lowest average sea temperature) is February (45.1°F).

Average daylight in October /
Average sunshine in October
Annapolis, MD

Average daylight in October / Average sunshine in October - Annapolis, MD
  • Average daylight in October: 11h and 1min

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 October: 5h and 4min

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 0min).

Average sunshine days in October
Annapolis, MD

Average sunshine days in October - Annapolis, MD
  • Average sunshine days in October: 20 days

The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is August (13.8 days).

Average UV index in October
Annapolis, MD

Average UV index in October - Annapolis, MD
  • Average UV index in October: 4

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).

Average cloud cover in October
Annapolis, MD

Average cloud cover in October - Annapolis, MD
  • Average cloud cover in October: 37

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

Average visibility in October
Annapolis, MD

Average visibility in October - Annapolis, MD
  • Average visibility in October: 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).

Annapolis, Maryland, USA

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