December weather forecastHarbour Heights, FL
December
Weather in December
The first month of the winter, December, is also a moderately hot month in Harbour Heights, Florida, with an average temperature varying between 59.4°F (15.2°C) and 74.8°F (23.8°C).Temperature
With the onset of December, the average high-temperature stands at a still warm 74.8°F (23.8°C), closely aligned with November's 78.4°F (25.8°C). December nights in Harbour Heights are marked by an average temperature drop to a refreshing 59.4°F (15.2°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Harbour Heights, during December, the rain falls for 9.4 days and regularly aggregates up to 1.22" (31mm) of precipitation. Throughout the year, there are 181.8 rainfall days, and 29.37" (746mm) of precipitation is accumulated.Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:00 am and sunset at 5:34 pm. On the last day of December, in Harbour Heights, sunrise is at 7:17 am and sunset at 5:45 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.3h of sunshine.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 5 during December leads to these advisories:
Take care. Persons with lighter skin might suffer burns in less than 30 minutes. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Harbour Heights, FL
- Average high temperature in December: 74.8°F
The warmest months (with the highest average high temperature) are July and August (90.1°F).
The month with the lowest average high temperature is January (70.9°F).
- Average low temperature in December: 59.4°F
The month with the highest average low temperature is August (77.5°F).
The coldest month (with the lowest average low temperature) is January (54.3°F).
Average pressure in December
Harbour Heights, FL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in December
Harbour Heights, FL
- Average wind speed in December: 7.1mph
The windiest months (with the highest average wind speed) are January and March (7.5mph).
The calmest month (with the lowest average wind speed) is July (5.2mph).
Average humidity in December
Harbour Heights, FL
- Average humidity in December: 77%
The month with the highest relative humidity is September (78%).
The month with the lowest relative humidity is March (70%).
Average rainfall in December
Harbour Heights, FL
- Average rainfall in December: 1.22"
The wettest month (with the highest rainfall) is August (5.39").
The driest month (with the least rainfall) is February (0.79").
Average rainfall days in December
Harbour Heights, FL
- Average rainfall days in December: 9.4 days
The month with the highest number of rainy days is August (25.6 days).
The months with the least rainy days are January and February (8.1 days).
Average daylight in December /
Average sunshine in December
Harbour Heights, FL
- Average daylight in December: 10h and 30min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in December: 6h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Harbour Heights, FL
- Average sunshine days in December: 18.8 days
The month with the most sunshine days is January (20.8 days).
The month with the least sunshine days is August (3.8 days).
Average UV index in December
Harbour Heights, FL
- Average UV index in December: 5
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, February, November and December (UV index 5).
Average cloud cover in December
Harbour Heights, FL
- Average cloud cover in December: 32
The month with the most cloud cover is December (Cloud cover 32).
The month with the least cloud cover is May (Cloud cover 26).
Average visibility in December
Harbour Heights, 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).
