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 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
On the advent of December, O'Brien's average high-temperature exhibits a minor adjustment to a refreshing 66°F (18.9°C) from November's 71.2°F (21.8°C). Nightly temperatures in O'Brien drop to an average low of 49.1°F (9.5°C) in December.Humidity
In December, the average relative humidity in O'Brien is 76%.Rainfall
In O'Brien, during December, the rain falls for 9.5 days and regularly aggregates up to 1.5" (38mm) of precipitation. Throughout the year, there are 173.7 rainfall days, and 30.83" (783mm) of precipitation is accumulated.Snowfall
January, March through December are months without snowfall.Daylight
With an average of 10h and 18min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:10 am and sunset at 5:31 pm. On the last day of December, sunrise is at 7:27 am and sunset at 5:42 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 5.9h of sunshine.UV index
The average daily maximum UV index in December is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 4 transforms into these recommendations:
Be vigilant - Preventing sunburn is recommended. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Frequently asked questions
What are the temperatures in O'Brien in December?
What is the average humidity in December in O'Brien?
How much does it rain in O'Brien in December?
When it does not snow in O'Brien?
What is the month with the shortest days in O'Brien?
What is the average length of the day in December in O'Brien?
When is the sunrise / sunset in December in O'Brien?
What is the month with the least sunshine in O'Brien?
How long on average sun shines in December in O'Brien?
What is the UV index intensity in December in O'Brien?
Average temperature in December
O'Brien, FL
- Average high temperature in December: 66°F
The warmest months (with the highest average high temperature) are July and August (91.2°F).
The month with the lowest average high temperature is January (62.2°F).
- Average low temperature in December: 49.1°F
The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in December
O'Brien, 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
O'Brien, FL
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (6.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).
Average humidity in December
O'Brien, 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 May (70%).
Average rainfall in December
O'Brien, FL
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is August (4.53").
The driest month (with the least rainfall) is November (0.98").
Average rainfall days in December
O'Brien, FL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (25.4 days).
The month with the least rainy days is November (7.1 days).
Average snowfall days in December
O'Brien, FL
- Average snowfall days in December: 0 days
The month with the highest number of snowfall days is February (0.1 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
O'Brien, FL
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 54min).
Average sunshine days in December
O'Brien, FL
- Average sunshine days in December: 20.3 days
The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (4.2 days).
Average UV index in December
O'Brien, FL
- Average UV index in December: 4
The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is January (UV index 3).
Average cloud cover in December
O'Brien, FL
- Average cloud cover in December: 40
The month with the most cloud cover is December (Cloud cover 40).
The months with the least cloud cover are May and October (Cloud cover 30).
Average visibility in December
O'Brien, FL
- Average visibility in December: 5mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is December (5mi).
O'Brien, Florida, USA
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