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
Foster, Rhode Island, in December experiences a subtle temperature decline, with average high-temperatures reducing from a chilly 49.1°F (9.5°C) in November to an icy 39.4°F (4.1°C). In December, Foster experiences an average nighttime temperature of 28.8°F (-1.8°C).Humidity
In December, the average relative humidity in Foster is 78%.Rainfall
December is the month with the most rainfall. Rain falls for 11.5 days and accumulates 3.43" (87mm) of precipitation.Snowfall
Months with snowfall in Foster, Rhode Island, are January through May, November and December. In Foster, Rhode Island, during December, snow falls for 5 days and regularly aggregates up to 2.48" (63mm) of snow. Throughout the year, in Foster, there are 30.6 snowfall days, and 14.02" (356mm) of snow is accumulated.Daylight
The month with the shortest days in Foster is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:55 am and sunset at 4:16 pm. On the last day of December, in Foster, Rhode Island, sunrise is at 7:14 am and sunset at 4:26 pm EST.
Sunshine
In Foster, the average sunshine in December is 4.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Foster. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. To guard against the harmful effects of the Sun, minimize exposure during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold does it get in Foster in December?
What is the average humidity in December in Foster?
What is the wettest month in Foster?
How many days does it rain in December in Foster?
How much does it snow in Foster in December?
What is the month with the shortest days in Foster?
How many hours of daylight does Foster have in December?
When are sunrise and sunset in December in Foster?
How many hours of sunshine does Foster have in December?
What are the months with the lowest UV index in Foster?
What is the UV index reading in December in Foster?
Average temperature in December
Foster, RI
- Average high temperature in December: 39.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in December: 28.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (21.6°F).
Average pressure in December
Foster, RI
- Average pressure in December: 30.04"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Foster, RI
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.9mph).
Average humidity in December
Foster, RI
- Average humidity in December: 78%
The months with the highest relative humidity are February, June, July, September and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Foster, RI
- Average rainfall in December: 3.43"
The wettest month (with the highest rainfall) is December (3.43").
The driest month (with the least rainfall) is September (1.81").
Average rainfall days in December
Foster, RI
- Average rainfall days in December: 11.5 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Foster, RI
- Average snowfall in December: 2.48"
The month with the highest snowfall is March (3.7").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Foster, RI
- Average snowfall days in December: 5 days
The month with the highest number of snowfall days is January (7.8 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
Foster, RI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Foster, RI
- Average sunshine days in December: 15.8 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Foster, 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
Foster, RI
- Average cloud cover in December: 48
The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).
Average visibility in December
Foster, RI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, October, November and December (6mi).
The months with the lowest visibility are May, June, July, August and September (5mi).
Foster, Rhode Island, USA
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