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
Arrival of December comes with a reduction in the average high-temperature, falling from a frosty 49.1°F (9.5°C) in November to an icy 39°F (3.9°C). Throughout December, Wayland anticipates an average low-temperature of 28.4°F (-2°C).Humidity
In Wayland, the average relative humidity in December is 77%.Rainfall
In Wayland, during December, the rain falls for 9.6 days and regularly aggregates up to 2.36" (60mm) of precipitation. In Wayland, during the entire year, the rain falls for 141.8 days and collects up to 24.21" (615mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Wayland, during December, snow falls for 5.3 days and regularly aggregates up to 3.66" (93mm) of snow. Throughout the year, there are 28.5 snowfall days, and 15.91" (404mm) of snow is accumulated.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:55 am and sunset at 4:13 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:22 pm EST.
Sunshine
The average sunshine in December is 5h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
While sun exposure does not greatly affect most, individuals with fair skin, babies, and children always need vigilant safeguarding. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold during December?
What is the average humidity in December?
How many days does it rain in December in Wayland?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Wayland have in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Wayland, MA
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in December
Wayland, 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
Wayland, MA
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is January (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Wayland, MA
- Average humidity in December: 77%
The month with the highest relative humidity is February (79%).
The month with the lowest relative humidity is April (70%).
Average rainfall in December
Wayland, MA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is March (2.4").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in December
Wayland, MA
- Average rainfall days in December: 9.6 days
The month with the highest number of rainy days is July (15.6 days).
The month with the least rainy days is January (7.3 days).
Average snowfall in December
Wayland, MA
- Average snowfall in December: 3.66"
The month with the highest snowfall is February (4.17").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Wayland, MA
- Average snowfall days in December: 5.3 days
The month with the highest number of snowfall days is January (7.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Wayland, MA
- 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 6min).
- Average sunshine in December: 5h and 0min
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 48min).
Average sunshine days in December
Wayland, MA
- Average sunshine days in December: 16.6 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is April (13.2 days).
Average UV index in December
Wayland, 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
Wayland, MA
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Wayland, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is February (5mi).
Wayland, Massachusetts, USA
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