December weather forecastDismal Key, FL
December
Weather in December
December, the first month of the winter in Dismal Key, is also a moderately hot month, with an average temperature ranging between min 64.4°F (18°C) and max 74.8°F (23.8°C).Temperature
The average high-temperature for December is a still moderately hot 74.8°F (23.8°C), closely aligning with the temperature of the preceding month. In December, the nighttime temperature in Dismal Key lowers to an average of 64.4°F (18°C).Humidity
December is the most humid month, with an average relative humidity of 76%.Rainfall
In Dismal Key, in December, it is raining for 7.9 days, with typically 0.87" (22mm) of accumulated precipitation. Throughout the year, there are 162.1 rainfall days, and 21.69" (551mm) of precipitation is accumulated.Daylight
December has the shortest days of the year, with an average of 10h and 36min of daylight.On the first day of the month, sunrise is at 6:56 am and sunset at 5:34 pm. On the last day of December, sunrise is at 7:12 am and sunset at 5:46 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.7h of sunshine.UV index
The average daily maximum UV index in December is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 6 in December translates into the following instructions:
Enforce precautions and stick to sun safety measures. Preservation from skin and eye damage is essential. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Dismal Key, FL
- Average high temperature in December: 74.8°F
The warmest month (with the highest average high temperature) is August (88.3°F).
The month with the lowest average high temperature is January (71.6°F).
- Average low temperature in December: 64.4°F
The month with the highest average low temperature is August (80.2°F).
The coldest month (with the lowest average low temperature) is January (59.5°F).
Average pressure in December
Dismal Key, FL
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is September (29.94"Hg).
Average wind speed in December
Dismal Key, FL
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is November (9.2mph).
The calmest month (with the lowest average wind speed) is July (6.2mph).
Average humidity in December
Dismal Key, FL
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Dismal Key, FL
- Average rainfall in December: 0.87"
The wettest month (with the highest rainfall) is August (4.29").
The driest month (with the least rainfall) is March (0.63").
Average rainfall days in December
Dismal Key, FL
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is August (22.4 days).
The month with the least rainy days is February (7 days).
Average daylight in December /
Average sunshine in December
Dismal Key, FL
- Average daylight in December: 10h and 36min
The month with the longest days is June (Average daylight: 13h and 42min).
The month with the shortest days is December (Average daylight: 10h and 36min).
- Average sunshine in December: 6h and 42min
The months with the most sunshine are May and July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Dismal Key, FL
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is January (21.8 days).
The month with the least sunshine days is August (6.8 days).
Average UV index in December
Dismal Key, FL
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and February (UV index 5).
Average cloud cover in December
Dismal Key, FL
- Average cloud cover in December: 27
The month with the most cloud cover is January (Cloud cover 28).
The months with the least cloud cover are March and April (Cloud cover 22).
Average visibility in December
Dismal Key, 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).
