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
The move into December indicates a reduction in the average high-temperature, down from November's frosty 47.3°F (8.5°C) to a wintry 36.7°F (2.6°C). During December, South Hadley experiences a consistent low-temperature average of 26.1°F (-3.3°C).Humidity
In South Hadley, the average relative humidity in December is 80%.Rainfall
In South Hadley, in December, during 9.1 rainfall days, 1.5" (38mm) of precipitation is typically accumulated. Throughout the year, there are 136.4 rainfall days, and 18.78" (477mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, November and December. In South Hadley, in December, during 4.4 snowfall days, 1.38" (35mm) of snow is typically accumulated. In South Hadley, during the entire year, snow falls for 25.6 days and aggregates up to 6.93" (176mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:00 am and sunset at 4:18 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:28 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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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 December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does South Hadley have in December?
When are sunrise and sunset in December?
How many hours of sunshine does South Hadley have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
South Hadley, MA
- Average high temperature in December: 36.7°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in December: 26.1°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 (18.7°F).
Average pressure in December
South Hadley, MA
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
South Hadley, MA
- Average wind speed in December: 7.5mph
The windiest months (with the highest average wind speed) are January and March (8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
South Hadley, MA
- Average humidity in December: 80%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
South Hadley, MA
- Average rainfall in December: 1.5"
The wettest month (with the highest rainfall) is July (2.05").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days in December
South Hadley, MA
- Average rainfall days in December: 9.1 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
South Hadley, MA
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
South Hadley, MA
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is February (7.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
South Hadley, 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 12min).
- Average sunshine in December: 5h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
South Hadley, MA
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (13.8 days).
Average UV index in December
South Hadley, 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
South Hadley, MA
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
South Hadley, MA
- Average visibility in December: 6mi
The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).
South Hadley, Massachusetts, USA
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