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 snowfall in December
- Average snowfall 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
As Heathrow transitions into December, the average high-temperature stands at a pleasant 72°F (22.2°C), offering little variation from the preceding month. December brings with it a nighttime average temperature of 56.7°F (13.7°C).Humidity
The average relative humidity in December is 76%.Rainfall
In Heathrow, in December, it is raining for 10.7 days, with typically 1.42" (36mm) of accumulated precipitation. Throughout the year, there are 185.5 rainfall days, and 30.43" (773mm) of precipitation is accumulated.Snowfall
In Heathrow, snow does not fall in February through December.Daylight
December has the shortest days of the year, with an average of 10h and 18min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 5:27 pm. On the last day of December, in Heathrow, sunrise is at 7:18 am and sunset at 5:39 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.2h of sunshine.UV index
In December, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: A maximum daily UV index of 5 during December morphs into the following directions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the average humidity in December?
How many days does it rain in December in Heathrow?
When it does not snow?
Does it snow in December?
What is the month with the shortest days in Heathrow?
What is the average length of the day in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the UV index intensity in December?
Average temperature in December
Heathrow, FL
- Average high temperature in December: 72°F
The warmest month (with the highest average high temperature) is August (91°F).
The month with the lowest average high temperature is January (67.8°F).
- Average low temperature in December: 56.7°F
The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (52°F).
Average pressure in December
Heathrow, FL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is September (29.97"Hg).
Average wind speed in December
Heathrow, FL
- Average wind speed in December: 6.2mph
The windiest months (with the highest average wind speed) are January, March and April (6.6mph).
The calmest month (with the lowest average wind speed) is July (4.7mph).
Average humidity in December
Heathrow, FL
- Average humidity in December: 76%
The months with the highest relative humidity are August and September (77%).
The month with the lowest relative humidity is March (70%).
Average rainfall in December
Heathrow, FL
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is March (1.18").
Average rainfall days in December
Heathrow, FL
- Average rainfall days in December: 10.7 days
The month with the highest number of rainy days is August (23.8 days).
The month with the least rainy days is January (10.1 days).
Average snowfall in December
Heathrow, FL
- Average snowfall in December: 0"
The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days in December
Heathrow, FL
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in December /
Average sunshine in December
Heathrow, FL
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 6h and 12min).
Average sunshine days in December
Heathrow, FL
- Average sunshine days in December: 16.8 days
The month with the most sunshine days is January (17.4 days).
The month with the least sunshine days is August (4.3 days).
Average UV index in December
Heathrow, 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 month with the lowest UV index is January (UV index 4).
Average cloud cover in December
Heathrow, FL
- Average cloud cover in December: 35
The month with the most cloud cover is February (Cloud cover 36).
The month with the least cloud cover is May (Cloud cover 27).
Average visibility in December
Heathrow, 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).
Heathrow, Florida, USA
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