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
December brings a marginal elevation to an agreeable 71.4°F (21.9°C) from November's 75.4°F (24.1°C) in Umatilla's average high-temperatures. During the nights in December, the temperature averages to a fresh 54.5°F (12.5°C).Humidity
The average relative humidity in December is 77%.Rainfall
In December, the rain falls for 10.5 days. Throughout December, 2.17" (55mm) of precipitation is accumulated. In Umatilla, during the entire year, the rain falls for 193.1 days and collects up to 35.71" (907mm) of precipitation.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 7:03 am and sunset at 5:28 pm. On the last day of December, in Umatilla, sunrise is at 7:19 am and sunset at 5:40 pm EST.
Sunshine
The month with the least sunshine is December, with an average of 6.1h of sunshine.UV index
In December, the average daily maximum UV index in Umatilla is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for average individuals.Note: The UV index of 5 during December translates into the following guidance:
Heed the precautions - Protecting the skin and eyes from damage is compulsory. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine in Umatilla?
How many hours of sunshine does Umatilla have in December?
What is the UV index reading in December in Umatilla?
Average temperature in December
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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
Umatilla, 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).
Umatilla, Florida, USA
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