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
Transition into December marks a drop in the average high-temperature, moving from a chilly 45.7°F (7.6°C) in November to a wintry 36.3°F (2.4°C). The average nighttime temperature lowers to a subzero cold 27°F (-2.8°C) throughout December.Humidity
The average relative humidity in December is 78%.Rainfall
In Westbrook, during December, the rain falls for 6.8 days and regularly aggregates up to 1.57" (40mm) of precipitation. In Westbrook, during the entire year, the rain falls for 116.5 days and collects up to 17.13" (435mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Westbrook, in December, snow falls for 5.6 days, with typically accumulated 2.8" (71mm) of snow. In Westbrook, during the entire year, snow falls for 30.1 days and aggregates up to 12.24" (311mm) of snow.Daylight
With an average of 9h and 0min of daylight, December has the shortest days of the year in Westbrook.On the first day of December, sunrise is at 6:55 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:14 pm EST.
Sunshine
With an average of 4.8h of sunshine, December has the least sunshine of the year.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 of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 during December translates into the following recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
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 much does it rain in Westbrook in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Westbrook have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Westbrook have in December?
When is the lowest UV index in Westbrook?
What is the UV index intensity in December in Westbrook?
Average temperature in December
Westbrook, ME
- Average high temperature in December: 36.3°F
The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is January (30.4°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Westbrook, ME
- Average pressure in December: 30.02"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Westbrook, ME
- Average wind speed in December: 10.2mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).
Average humidity in December
Westbrook, ME
- Average humidity in December: 78%
The month with the highest relative humidity is June (82%).
The month with the lowest relative humidity is November (75%).
Average rainfall in December
Westbrook, ME
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is October (1.97").
The driest month (with the least rainfall) is September (0.79").
Average rainfall days in December
Westbrook, ME
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is July (13.8 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Westbrook, ME
- Average snowfall in December: 2.8"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Westbrook, ME
- Average snowfall days in December: 5.6 days
The month with the highest number of snowfall days is January (8.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Westbrook, ME
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in December
Westbrook, ME
- Average sunshine days in December: 19 days
The month with the most sunshine days is January (19.7 days).
The month with the least sunshine days is July (15.3 days).
Average UV index in December
Westbrook, 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, November and December (UV index 2).
Average cloud cover in December
Westbrook, ME
- Average cloud cover in December: 48
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Westbrook, ME
- 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).
Westbrook, Maine, USA
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