Annapolis
Maryland, USA
Long-term weather forecast
Long-term weather forecast

October weather forecast and climate
Annapolis, MD

A view of Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
A view of Chesapeake Bay at dusk, in Annapolis, Maryland, with a distant view of the US Naval Academy chapel dome
October, the same as September, is another enjoyable autumn month in Annapolis, Maryland, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 66.2°F (19°C).

Temperature

In October, the average high-temperature decreases, from a warm 77°F (25°C) in September, to an enjoyable 66.2°F (19°C). In October, the average low-temperature is 54.5°F (12.5°C).

Humidity

The average relative humidity in October is 75%.

Rainfall

In Annapolis, during October, the rain falls for 8.8 days and regularly aggregates up to 0.87" (22mm) of precipitation. Throughout the year, in Annapolis, Maryland, there are 120.4 rainfall days, and 10.47" (266mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Annapolis, Maryland.

Ocean temperature

In Annapolis, the average seawater temperature is 66.7°F (19.3°C).
Note: Swimming in 66.7°F (19.3°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

Daylight

In October, the average length of the day is 11.2h.

Sunshine

The average sunshine in Annapolis is 5.7h.

UV index

In Annapolis, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 4 in October interpret into the following advice:
Take precautions - Protection against sun damage is advised. 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.

What is the temperature in October in Annapolis?

In Annapolis, in October, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 54.5°F (12.5°C).

What is the average humidity in October in Annapolis?

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

How many days does it rain in October in Annapolis?

In Annapolis, Maryland, during October, the rain falls for 8.8 days and regularly aggregates up to 0.87" (22mm) of precipitation.

Does it snow in Annapolis in October?

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

When it does not snow in Annapolis?

In Annapolis snow does not fall in April through October.

What is the ocean temperature in October in Annapolis?

In Annapolis, in October, the average water temperature is 66.7°F (19.3°C). For swimming, a surface water temperature of 66.7°F (19.3°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

What is the average length of the day in October in Annapolis?

In October, the average length of the day is 11.2h.

How long on average sun shines in October in Annapolis?

In October, the average sunshine is 5.7h.

What is the UV index intensity in October in Annapolis?

In October, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a moderate health threat from the exposure to the Sun's UV radiation.
Average temperature in October - Annapolis, MD
  • Average high temperature in October: 19°C

The warmest month (with the highest average high temperature) is July (29.3°C).
The month with the lowest average high temperature is January (4.6°C).

  • Average low temperature in October: 12.5°C

The month with the highest average low temperature is July (22.2°C).
The coldest month (with the lowest average low temperature) is January (-1.2°C).

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

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

Average rainfall in October - Annapolis, MD
  • Average rainfall in October: 22mm

The wettest month (with the highest rainfall) is August (43mm).
The driest month (with the lowest rainfall) is January (12mm).

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

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

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

The month with the highest snowfall is January (17mm).
Months with the lowest snowfall are April, May, June, July, August, September and October (0mm).

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).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

Average sea temperature in October - Annapolis, MD
  • Average sea temperature in October: 19.3°C

The best month for swimming (with the highest average sea temperature) is August (25.4°C).
The coldest month (with the lowest average sea temperature) is February (7.3°C).

Average daylight in October / Average sunshine in October - Annapolis, MD
  • Average daylight in October: 11.2h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in October: 5.7h

The month with most sunshine is July (Average sunshine: 10.8h).
The month with least sunshine is February (Average sunshine: 5h).

Average UV index in October - Annapolis, MD
  • Average UV index in October: 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 and December (UV index 2).