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
With the advent of December, Altoona's high-temperatures adjust to an agreeable 71.4°F (21.9°C), closely aligning with the preceding month. Throughout December, the nighttime temperature averages to a cool 54.5°F (12.5°C).Humidity
In Altoona, the average relative humidity in December is 77%.Rainfall
In Altoona, during December, the rain falls for 10.5 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, in Altoona, Florida, there are 193.1 rainfall days, and 35.71" (907mm) of precipitation is accumulated.Daylight
The month with the shortest days is December, with an average of 10h and 18min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 5:28 pm. On the last day of December, in Altoona, sunrise is at 7:19 am and sunset at 5:39 pm EST.
Sunshine
With an average of 6.1h of sunshine, December has the least sunshine of the year.UV index
The average daily maximum UV index in December is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the average person.Note: In December, the maximum UV index of 5 translates into these guidelines:
Exercise caution. The susceptibility of light skin individuals to burns is less than 30 minutes. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Altoona in December?
What is the average humidity in December in Altoona?
How much does it rain in Altoona in December?
What is the month with the shortest days in Altoona?
What is the average length of the day in December in Altoona?
What time are sunrise and sunset in December in Altoona?
What is the month with the least sunshine in Altoona?
How many hours of sunshine does Altoona have in December?
How high is the UV index in December in Altoona?
Average temperature in December
Altoona, FL
- Average high temperature in December: 71.4°F
The warmest month (with the highest average high temperature) is August (90.9°F).
The month with the lowest average high temperature is January (67.5°F).
- Average low temperature in December: 54.5°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (49.5°F).
Average pressure in December
Altoona, 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
Altoona, FL
- Average wind speed in December: 5.7mph
The windiest month (with the highest average wind speed) is April (6.4mph).
The calmest month (with the lowest average wind speed) is July (4.5mph).
Average humidity in December
Altoona, FL
- Average humidity in December: 77%
The months with the highest relative humidity are July, August and September (78%).
The month with the lowest relative humidity is March (71%).
Average rainfall in December
Altoona, FL
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is July (5.91").
The driest months (with the least rainfall) are March and November (1.26").
Average rainfall days in December
Altoona, FL
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (26.9 days).
The month with the least rainy days is January (9.2 days).
Average daylight in December /
Average sunshine in December
Altoona, 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: 6h and 1min
The months with the most sunshine are May and July (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 6h and 6min).
Average sunshine days in December
Altoona, FL
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is January (19 days).
The month with the least sunshine days is August (2.1 days).
Average UV index in December
Altoona, FL
- Average UV index in December: 5
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 4).
Average cloud cover in December
Altoona, FL
- Average cloud cover in December: 37
The months with the most cloud cover are February and December (Cloud cover 37).
The month with the least cloud cover is May (Cloud cover 29).
Average visibility in December
Altoona, 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).
Altoona, Florida, USA
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