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
In Leominster, the average high-temperature in December drops from a frosty 46.9°F (8.3°C) in November to an icy 36.5°F (2.5°C). Leominster records an average low of 25.5°F (-3.6°C) throughout the nights in December.Humidity
In Leominster, the average relative humidity in December is 79%.Rainfall
December is the month with the most rainfall. Rain falls for 10.2 days and accumulates 2.91" (74mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Leominster. In Leominster, Massachusetts, in December, snow falls for 6.5 days, with typically accumulated 4.29" (109mm) of snow. In Leominster, during the entire year, snow falls for 38.8 days and aggregates up to 24.61" (625mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:14 pm. On the last day of December, sunrise is at 7:16 am and sunset at 4:24 pm EST.
Sunshine
In Leominster, the average sunshine in December is 4.7h.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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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?
What is the wettest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Leominster have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Leominster have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Leominster, MA
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (30.9°F).
- Average low temperature in December: 25.5°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 (18°F).
Average pressure in December
Leominster, MA
- 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 (29.92"Hg).
Average wind speed in December
Leominster, MA
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in December
Leominster, MA
- Average humidity in December: 79%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Leominster, MA
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is December (2.91").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Leominster, MA
- Average rainfall days in December: 10.2 days
The month with the highest number of rainy days is May (15.5 days).
The months with the least rainy days are January and February (7.3 days).
Average snowfall in December
Leominster, MA
- Average snowfall in December: 4.29"
The month with the highest snowfall is February (6.54").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Leominster, MA
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Leominster, MA
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in December
Leominster, MA
- Average sunshine days in December: 16 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in December
Leominster, MA
- 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
Leominster, MA
- Average cloud cover in December: 49
The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in December
Leominster, MA
- Average visibility in December: 6mi
The months with the highest visibility are April, November and December (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and October (5mi).
Leominster, Massachusetts, USA
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