Average December Weather in Rhode Island

Typical temperatures, precipitation, snowfall, humidity and sunshine during December at cities and towns throughout Rhode Island are listed below.

Temperatures in Rhode Island for December

This table gives the averages in degrees Fahrenheit and Celsius for maximum and minimum monthly temperatures. These normal temperatures are based on weather data collected from 1991 to 2020 for the US National Centers for Environmental Information.

Precipitation in Rhode Island for December

Here are the December averages for rainfall plus snowfall in Rhode Island. Each place has a total for how many days of wet weather it usually gets this month and for the normal amount of precipitation, based on the weather during 1991 to 2020. The calculation of days only includes those when precipitation totalled 0.01 inches (0.25 millimetres) or more.

Snowfall in Rhode Island for December

Listed here are the totals for amount of snow and how many days it snows at least 0.1 inches (0.25 centimetres) in Rhode Island. The numbers are this month's averages of snowfall measurements made during 1991 to 2020.

Sunshine in Rhode Island for December

In the table below, the average number of Sunny Days in Rhode Island is the total days this month when the sky is mostly clear. This includes the days when cloud covers up to 30% of the sky during daylight hours.

Partly Sunny Days have cloud covering from 40% to 70% of the sky during the daytime. The rest of the days during December are mainly overcast, with at least 80% cloud cover. Total Days With Sun is a sum of the Sunny plus Partly Sunny days.

Humidity in Rhode Island

In the table below, the Daily number is the average of relative humidity readings taken every three hours throughout the day. Morning percentages are for 7 am and Afternoon levels are for 4 pm local standard time. All the humidity numbers are averages for the years 1961 to 1990.