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
December's arrival aligns with a minor decrease in average high-temperatures, from November's enjoyable 64.8°F (18.2°C) to a mild 58.1°F (14.5°C). Boylston experiences an average low-temperature of 43.2°F (6.2°C) in month of December.Humidity
December is the most humid month, with an average relative humidity of 79%.Rainfall
The wettest months are August and December, with an average 2.36" (60mm) of rainfall.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows. Throughout December, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In Boylston, during the entire year, snow falls for 1.2 days and aggregates up to 0.51" (13mm) of snow.Daylight
The month with the shortest days in Boylston is December, with an average of 10h and 6min of daylight.On the first day of December, sunrise is at 6:29 am and sunset at 4:39 pm. On the last day of the month, sunrise is at 6:46 am and sunset at 4:50 pm CST.
Sunshine
February and December, with an average of 5.1h of sunshine, are months with the least sunshine in Boylston.UV index
January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 3 translates into the following recommendations:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
What is the rainiest month?
How many days does it rain in December?
When does it start to snow in Boylston?
What is the month with the shortest days?
How many hours of daylight does Boylston have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine in Boylston?
How long on average sun shines in December in Boylston?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Boylston, AL
- Average high temperature in December: 58.1°F
The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (54.7°F).
- Average low temperature in December: 43.2°F
The months with the highest average low temperature are July and August (72.1°F).
The coldest month (with the lowest average low temperature) is January (38.5°F).
Average pressure in December
Boylston, AL
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Boylston, AL
- Average wind speed in December: 7.6mph
The windiest months (with the highest average wind speed) are January, February and December (7.6mph).
The calmest month (with the lowest average wind speed) is July (4.8mph).
Average humidity in December
Boylston, AL
- Average humidity in December: 79%
The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Boylston, AL
- Average rainfall in December: 2.36"
The wettest months (with the highest rainfall) are August and December (2.36").
The driest month (with the least rainfall) is September (1.22").
Average rainfall days in December
Boylston, AL
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is August (19.4 days).
The month with the least rainy days is November (6.7 days).
Average snowfall in December
Boylston, AL
- Average snowfall in December: 0.04"
The months with the highest snowfall are January and March (0.2").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in December
Boylston, AL
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is January (0.6 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Boylston, AL
- Average daylight in December: 10h and 1min
The month with the longest days is June (Average daylight: 14h and 12min).
The month with the shortest days is December (Average daylight: 10h and 6min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 6min).
Average sunshine days in December
Boylston, AL
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (21.9 days).
The month with the least sunshine days is July (9 days).
Average UV index in December
Boylston, AL
- Average UV index in December: 3
The months with the highest UV index are May, June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 3).
Average cloud cover in December
Boylston, AL
- Average cloud cover in December: 46
The month with the most cloud cover is December (Cloud cover 46).
The month with the least cloud cover is October (Cloud cover 29).
Average visibility in December
Boylston, AL
- 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).
Boylston, Alabama, USA
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