The weather in December in the United States
It's cool in December in the United States with an average temperature of 11°C. Temperatures this month range from a low of 6°C to a high of 14°C. At night, you can expect temperatures between -4°C and 3°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in December for the United States. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 26°C in 2021, the United States reached the highest temperature in December over the past 10 years. The lowest daytime temperature in this month was -11°C in 2022. The extreme nighttime temperatures ranged from a lowest recorded value of -20°C to a highest value of 13°C.
Precipitation and snowfall
In December, there is an average of 50 mm of precipitation, spread over 8 days. Of the total precipitation, about 2,2 cm falls as snow in December. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in December for the United States
Click on any day in December to get detailed info about the usual weather on that day in the United States. Check out the historical temperatures and precipitation over the past 10 years on this day.
December weather comparison
| United States | New York | |
|---|---|---|
| Average temperature | 11°C | 9°C |
| Max. temperature | 14°C | 12°C |
| Min. temperature | -4°C | -5°C |
| Total precipitation | 50 mm | 133 mm |
| Rainy days | 8 days | 17 days |
| Total snowfall | 2,2 cm | 9,7 cm |
| Snowy days | 1 day | 3 days |
Start of December
The month of December starts in United States with cool temps, averaging around 12°C during the day and nights around 1°C.
Mid December
By mid-December, daytime temps drop to around 11°C, with nights around 1°C. Not much precipitation expected during this period. It’s mostly dry and sunny.
End of December
By the end of December, the average daytime temperature in United States is around 10°C, while nighttime temps are about -1°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
The hurricane season in Alabama runs from June to November.
The hurricane season in Florida runs from June to November.
The hurricane season in Louisiana runs from June to November.
The hurricane season in Mississippi runs from June to November.
The hurricane season in Texas runs from June to November.
Check out the climate of the United States for all months and discover the best travel time
The climate in the United States is based on weather data from . Other places, like New York City, Miami or Los Angeles, might have different weather. You can check out all destinations in the United States to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in December in the United States. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in December in the United States
Temperature in December in the United States over the years
Precipitation charts
These charts show the average amount of precipitation in December in the United States. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in December in the United States
Total precipitation in December in the United States over the years
Daily Snowfall in December in the United States
Snowfall in December in the United States per year
Daily UV index in December in the United States
This chart shows the average daily UV index in December in the United States, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in December in the United States
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Average weather in the United States by month
Click on a month below to see detailed weather info for the United States. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.