December weather forecastBethel, ME

December
Weather in December
As the final month of the year, December welcomes winter back to Bethel, Maine with falling temperatures and increasing snowfall. Average temperature ranges from 29.3°F (-1.5°C) to 18.9°F (-7.3°C), marking the return of a cold climate. Snowfall increases significantly as winter sets in, covering the landscape in a beautiful layer of white. Despite the cold weather, the city buzzes with the magic of holiday season. Yet, the sun only shines for a reduced amount of time, and the cold winds add an extra chill to the air.Temperature
December suggests a modest reduction in the average high-temperature, shifting from a cold 40.3°F (4.6°C) in November to a subzero cold 29.3°F (-1.5°C). Bethel's temperature drops to an average low of 18.9°F (-7.3°C) during the nights of December.Humidity
In Bethel, the average relative humidity in December is 82%.Rainfall
In Bethel, during December, the rain falls for 11 days and regularly aggregates up to 2.44" (62mm) of precipitation. In Bethel, during the entire year, the rain falls for 153 days and collects up to 27.52" (699mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 14.3 days. Throughout December, 8.11" (206mm) of snow is accumulated. In Bethel, during the entire year, snow falls for 76.9 days and aggregates up to 52.13" (1324mm) of snow.Daylight
December has the shortest days of the year in Bethel, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:05 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:13 pm EST.
Sunshine
The average sunshine in December is 4.5h.UV index
In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Bethel, ME
- Average high temperature in December: 29.3°F
The warmest month (with the highest average high temperature) is July (76.6°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in December: 18.9°F
The month with the highest average low temperature is July (55.4°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure in December
Bethel, ME
- Average pressure in December: 30.02"Hg
The month with the highest atmospheric pressure is November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Bethel, ME
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is March (6.5mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Bethel, ME
- Average humidity in December: 82%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is May (76%).
Average rainfall in December
Bethel, ME
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is October (3.19").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Bethel, ME
- Average rainfall days in December: 11 days
The months with the highest number of rainy days are April and May (15.3 days).
The month with the least rainy days is February (8.6 days).
Average snowfall in December
Bethel, ME
- Average snowfall in December: 8.11"
The month with the highest snowfall is February (11.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bethel, ME
- Average snowfall days in December: 14.3 days
The months with the highest number of snowfall days are January and February (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bethel, ME
- Average daylight in December: 8h and 54min
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 30min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in December
Bethel, ME
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is September (15.7 days).
The month with the least sunshine days is April (10.5 days).
Average UV index in December
Bethel, ME
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in December
Bethel, ME
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are July, August and September (Cloud cover 39).
Average visibility in December
Bethel, ME
- Average visibility in December: 5mi
The months with the highest visibility are May, June, October, November and December (5mi).
The months with the lowest visibility are January, February, March, April, July, August and September (4mi).





