December weather forecast
Annapolis, CA

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Weather in December

December, the first month of the winter in Annapolis, is still a cool month, with an average temperature varying between 54.7°F (12.6°C) and 39.9°F (4.4°C).

Temperature

The month of December, characterized by an average high of 54.7°F (12.6°C) and a low of 39.9°F (4.4°C), is recognized as the coldest.

Humidity

In December, the average relative humidity is 76%.

Rainfall

In Annapolis, during December, the rain falls for 11.8 days and regularly aggregates up to 3.54" (90mm) of precipitation. Throughout the year, there are 83.1 rainfall days, and 21.38" (543mm) of precipitation is accumulated.

Snowfall

January, March through December are months without snowfall.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 7:13 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:02 pm PST.

Sunshine

The month with the least sunshine is December, with an average of 5.4h of sunshine.

UV index

The months with the lowest UV index are February, November and December, with an average maximum UV index of 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 3 suggests these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Updated: Jul 16, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest time of year?

In Annapolis, December is the month with the lowest recorded average temperatures, measuring a high of 54.7°F (12.6°C) and a low of 39.9°F (4.4°C).

What is the usual temperature for Annapolis in December?

In Annapolis, 54.7°F (12.6°C) is the average high-temperature and 39.9°F (4.4°C) is the average low-temperature during December. The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines air temperature and relative humidity, in August is estimated at 87.8°F (31°C).

What is the average humidity in December?

In Annapolis, the average relative humidity in December is 76%.

How much does it rain in December?

In December, the rain falls for 11.8 days. Throughout December, 3.54" (90mm) of precipitation is accumulated.

When it does not snow?

January, March through December are months without snowfall.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

How many hours of daylight does Annapolis have in December?

In Annapolis, the average day length in December is 9h and 31min.

When is the sunrise / sunset in December in Annapolis?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:02 pm PST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 5.4h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 5.4h.

What are the months with the lowest UV index?

February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.

How high is the UV index in December?

The average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate health threat 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 December
Annapolis, CA

Average temperature in December - Annapolis, CA
  • Average high temperature in December: 54.7°F

The warmest month (with the highest average high temperature) is August (83.5°F).
The month with the lowest average high temperature is December (54.7°F).

  • Average low temperature in December: 39.9°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).

Average pressure in December
Annapolis, CA

Average pressure in December - Annapolis, CA
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.92"Hg).

Average wind speed in December
Annapolis, CA

Average wind speed in December - Annapolis, CA
  • Average wind speed in December: 5.2mph

The windiest month (with the highest average wind speed) is May (6.8mph).
The calmest month (with the lowest average wind speed) is November (4.9mph).

Average humidity in December
Annapolis, CA

Average humidity in December - Annapolis, CA
  • Average humidity in December: 76%

The month with the highest relative humidity is March (78%).
The months with the lowest relative humidity are July and September (60%).

Average rainfall in December
Annapolis, CA

Average rainfall in December - Annapolis, CA
  • Average rainfall in December: 3.54"

The wettest month (with the highest rainfall) is February (4.49").
The driest months (with the least rainfall) are July and August (0.04").

Average rainfall days in December
Annapolis, CA

Average rainfall days in December - Annapolis, CA
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is March (15 days).
The month with the least rainy days is August (0.9 days).

Average snowfall in December
Annapolis, CA

Average snowfall in December - Annapolis, CA
  • Average snowfall in December: 0"

The month with the highest snowfall is February (0.2").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in December
Annapolis, CA

Average snowfall days in December - Annapolis, CA
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.3 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Annapolis, CA

Average daylight in December / Average sunshine in December - Annapolis, CA
  • Average daylight in December: 9h and 3min

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 December: 5h and 2min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).

Average sunshine days in December
Annapolis, CA

Average sunshine days in December - Annapolis, CA
  • Average sunshine days in December: 17.5 days

The months with the most sunshine days are July and August (29.6 days).
The month with the least sunshine days is March (14.6 days).

Average UV index in December
Annapolis, CA

Average UV index in December - Annapolis, CA
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February, November and December (UV index 3).

Average cloud cover in December
Annapolis, CA

Average cloud cover in December - Annapolis, CA
  • Average cloud cover in December: 40

The month with the most cloud cover is March (Cloud cover 42).
The months with the least cloud cover are July and August (Cloud cover 6).

Average visibility in December
Annapolis, CA

Average visibility in December - Annapolis, CA
  • Average visibility in December: 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, California, USA

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