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 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
In Smithfield, the average high-temperature in December decreases from a chilly 43°F (6.1°C) in November to a subzero cold 31.1°F (-0.5°C). Smithfield, during the month of December, experiences an average low-temperature of 20.1°F (-6.6°C).Humidity
The average relative humidity in December is 81%.Rainfall
In Smithfield, in December, it is raining for 9.6 days, with typically 3.11" (79mm) of accumulated precipitation. Throughout the year, there are 142.5 rainfall days, and 30.47" (774mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 10.1 days. Throughout December, 7.01" (178mm) of snow is accumulated. Throughout the year, there are 54.3 snowfall days, and 40.87" (1038mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of December, sunrise is at 6:56 am and sunset at 4:00 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 4:09 pm EST.
Sunshine
In Smithfield, the average sunshine in December is 4.5h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days in Smithfield?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Smithfield, ME
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (25.3°F).
- Average low temperature in December: 20.1°F
The month with the highest average low temperature is July (56.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in December
Smithfield, ME
- Average pressure in December: 30.01"Hg
The months with the highest atmospheric pressure are September and November (30.04"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Smithfield, ME
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is March (7.6mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Smithfield, ME
- Average humidity in December: 81%
The months with the highest relative humidity are February and March (85%).
The month with the lowest relative humidity is November (76%).
Average rainfall in December
Smithfield, ME
- Average rainfall in December: 3.11"
The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (1.65").
Average rainfall days in December
Smithfield, ME
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is June (16.8 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Smithfield, ME
- Average snowfall in December: 7.01"
The month with the highest snowfall is February (9.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Smithfield, ME
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Smithfield, ME
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Smithfield, ME
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is September (17.6 days).
The month with the least sunshine days is June (11.3 days).
Average UV index in December
Smithfield, ME
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Smithfield, ME
- Average cloud cover in December: 52
The months with the most cloud cover are February, March and April (Cloud cover 54).
The months with the least cloud cover are August and September (Cloud cover 39).
Average visibility in December
Smithfield, ME
- Average visibility in December: 5mi
The month with the highest visibility is November (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October and December (5mi).
Smithfield, Maine, USA
Weather forecast for your location
2. Allow the app to use your location