Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The advent of December brings a subtle shift in temperature, with the average high moving from an agreeable 69.4°F (20.8°C) in November to a comfortable 63.5°F (17.5°C). During December nights, Saint Marks witnesses a consistent average temperature of 54.3°F (12.4°C).Humidity
The most humid month is December, with an average relative humidity of 78%.Rainfall
In December, the rain falls for 9.8 days. Throughout December, 2.64" (67mm) of precipitation is accumulated. Throughout the year, there are 173 rainfall days, and 43.74" (1111mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 12min of daylight.On the first day of the month, sunrise is at 7:15 am and sunset at 5:36 pm. On the last day of December, sunrise is at 7:32 am and sunset at 5:47 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6h of sunshine.UV index
January and December, with an average maximum UV index of 4, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 4 in December translates into the following instructions:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
How many hours of daylight does Saint Marks have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Saint Marks have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Saint Marks, FL
- Average high temperature in December: 63.5°F
The warmest months (with the highest average high temperature) are July and August (86.5°F).
The month with the lowest average high temperature is January (60.1°F).
- Average low temperature in December: 54.3°F
The month with the highest average low temperature is August (79.7°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).
Average pressure in December
Saint Marks, FL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.98"Hg).
Average wind speed in December
Saint Marks, FL
- Average wind speed in December: 10.5mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in December
Saint Marks, FL
- Average humidity in December: 78%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Saint Marks, FL
- Average rainfall in December: 2.64"
The wettest month (with the highest rainfall) is August (8.35").
The driest month (with the least rainfall) is November (1.46").
Average rainfall days in December
Saint Marks, FL
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is August (26.1 days).
The month with the least rainy days is November (7.4 days).
Average daylight in December /
Average sunshine in December
Saint Marks, FL
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).
- Average sunshine in December: 6h
The month with the most sunshine is May (Average sunshine: 11h).
The month with the least sunshine is December (Average sunshine: 6h).
Average sunshine days in December
Saint Marks, FL
- Average sunshine days in December: 19.8 days
The month with the most sunshine days is November (21.2 days).
The month with the least sunshine days is August (2.7 days).
Average UV index in December
Saint Marks, FL
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 4).
Average cloud cover in December
Saint Marks, FL
- Average cloud cover in December: 35
The month with the most cloud cover is December (Cloud cover 35).
The month with the least cloud cover is May (Cloud cover 21).
Average visibility in December
Saint Marks, FL
- 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).
Saint Marks, Florida, USA
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