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 arrival of December sees a recorded average high-temperature of an agreeable 70.2°F (21.2°C), showing little divergence from the previous month's conditions. Keystone records an average nighttime low-temperature of 59.4°F (15.2°C) throughout December.Humidity
With an average relative humidity of 77%, December is the most humid month in Keystone.Rainfall
In Keystone, in December, during 6.5 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Keystone, Florida, during the entire year, the rain falls for 120.5 days and collects up to 9.45" (240mm) of precipitation.Daylight
December has the shortest days of the year, with an average of 10h and 24min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 5:34 pm. On the last day of December, sunrise is at 7:22 am and sunset at 5:45 pm EST.
Sunshine
With an average of 6.5h of sunshine, December has the least sunshine of the year in Keystone.UV index
The average daily maximum UV index in December is 5. 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: A typical high UV index of 5 in December suggests the following recommendations:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Frequently asked questions
What are the temperatures in Keystone in December?
What is the most humid month in Keystone?
What is the average humidity in December in Keystone?
How much does it rain in Keystone in December?
What is the month with the shortest days in Keystone?
How many hours of daylight does Keystone have in December?
What time are sunrise and sunset in December in Keystone?
What is the month with the least sunshine in Keystone?
How many hours of sunshine does Keystone have in December?
What is the UV index reading in December in Keystone?
Average temperature in December
Keystone, FL
- Average high temperature in December: 70.2°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 (66°F).
- Average low temperature in December: 59.4°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 (54.5°F).
Average pressure in December
Keystone, 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 (29.96"Hg).
Average wind speed in December
Keystone, FL
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are January, March and April (8.9mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity in December
Keystone, FL
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Keystone, FL
- Average rainfall in December: 0.94"
The wettest month (with the highest rainfall) is July (1.77").
The driest month (with the least rainfall) is March (0.2").
Average rainfall days in December
Keystone, FL
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is August (17.9 days).
The month with the least rainy days is November (5.5 days).
Average daylight in December /
Average sunshine in December
Keystone, 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 24min).
- Average sunshine in December: 6h and 3min
The month with the most sunshine is May (Average sunshine: 11h and 18min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).
Average sunshine days in December
Keystone, FL
- Average sunshine days in December: 23.3 days
The month with the most sunshine days is January (23.4 days).
The month with the least sunshine days is July (6.7 days).
Average UV index in December
Keystone, 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
Keystone, FL
- Average cloud cover in December: 30
The months with the most cloud cover are January and December (Cloud cover 30).
The month with the least cloud cover is May (Cloud cover 20).
Average visibility in December
Keystone, 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).
Keystone, Florida, USA
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