December weather forecastBrooklyn Heights, MO
December
Weather in December
December, the first month of the winter in Brooklyn Heights, is also a frosty month, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 45.5°F (7.5°C).Temperature
The arrival of December signals a shift in temperature, down from a moderate 55.9°F (13.3°C) in November to a chilly 45.5°F (7.5°C). Throughout the nights in December, an average low-temperature of 31.1°F (-0.5°C) is noted.Humidity
The average relative humidity in December is 74%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.5 days and typically collects 0.98" (25mm) of precipitation.Snowfall
Months with snowfall are January through March, May, November and December. In Brooklyn Heights, during December, snow falls for 2.2 days and regularly aggregates up to 0.2" (5mm) of snow. In Brooklyn Heights, during the entire year, snow falls for 11.3 days and aggregates up to 2.91" (74mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:13 am and sunset at 5:00 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 5:10 pm CST.
Sunshine
In December, the average sunshine is 5.6h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: An average maximum UV index of 2 in December leads to these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Brooklyn Heights, MO
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in December: 31.1°F
The month with the highest average low temperature is July (69.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in December
Brooklyn Heights, MO
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Brooklyn Heights, MO
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are March and April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity in December
Brooklyn Heights, MO
- Average humidity in December: 74%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Brooklyn Heights, MO
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days in December
Brooklyn Heights, MO
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is December (5.5 days).
Average snowfall in December
Brooklyn Heights, MO
- Average snowfall in December: 0.2"
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, June, July, August, September and October (0").
Average snowfall days in December
Brooklyn Heights, MO
- Average snowfall days in December: 2.2 days
The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Brooklyn Heights, MO
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 36min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 5h and 24min).
Average sunshine days in December
Brooklyn Heights, MO
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in December
Brooklyn Heights, MO
- Average UV index in December: 2
The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Brooklyn Heights, MO
- Average cloud cover in December: 40
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility in December
Brooklyn Heights, MO
- 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).
