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
The arrival of December correlates with a minor temperature reduction, down from November's fresh 50.7°F (10.4°C) to a cold 41.9°F (5.5°C). Exeter observes an average nighttime low-temperature of 31.3°F (-0.4°C) during the month of December.Humidity
In December, the average relative humidity is 75%.Rainfall
In December, the rain falls for 10.7 days. Throughout December, 2.48" (63mm) of precipitation is accumulated. Throughout the year, there are 138.3 rainfall days, and 24.06" (611mm) of precipitation is accumulated.Snowfall
January through May, November and December are months with snowfall. In Exeter, Rhode Island, in December, snow falls for 3.7 days, with typically accumulated 1.06" (27mm) of snow. Throughout the year, there are 20 snowfall days, and 7.09" (180mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:53 am and sunset at 4:16 pm. On the last day of December, sunrise is at 7:12 am and sunset at 4:26 pm EST.
Sunshine
In Exeter, the average sunshine in December is 4.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Experience reduced UV exposure by about half when donning a wide-brim hat. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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 many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in Exeter?
How high is the UV index in December in Exeter?
Average temperature in December
Exeter, RI
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (25°F).
Average pressure in December
Exeter, RI
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Exeter, RI
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in December
Exeter, RI
- Average humidity in December: 75%
The month with the highest relative humidity is June (81%).
The months with the lowest relative humidity are March and April (73%).
Average rainfall in December
Exeter, RI
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (0.98").
Average rainfall days in December
Exeter, RI
- Average rainfall days in December: 10.7 days
The months with the highest number of rainy days are April and July (14.5 days).
The month with the least rainy days is February (7.7 days).
Average snowfall in December
Exeter, RI
- Average snowfall in December: 1.06"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Exeter, RI
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Exeter, RI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Exeter, RI
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is April (13.7 days).
Average UV index in December
Exeter, RI
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Exeter, RI
- Average cloud cover in December: 47
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Exeter, RI
- 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).
Exeter, Rhode Island, USA
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