December weather forecastGermantown, IL
December
Weather in December
The first month of the winter, December, is still a cold month in Germantown, Illinois, with temperature in the range of an average low of 30°F (-1.1°C) and an average high of 41.9°F (5.5°C).Temperature
December indicates a shift in the average high-temperature, from November's cool 52.5°F (11.4°C) to a cold 41.9°F (5.5°C). Germantown's average low-temperature during December nights is observed to be a subzero cold 30°F (-1.1°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In Germantown, during December, the rain falls for 9.5 days and regularly aggregates up to 2.52" (64mm) of precipitation. In Germantown, during the entire year, the rain falls for 157.2 days and collects up to 36.18" (919mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In Germantown, during December, snow falls for 4 days and regularly aggregates up to 1.22" (31mm) of snow. Throughout the year, in Germantown, there are 22.4 snowfall days, and 7.83" (199mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:37 pm. On the last day of December, sunrise is at 7:15 am and sunset at 4:47 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Germantown. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, the maximum UV index of 2 translates into these guidelines:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Germantown, IL
- Average high temperature in December: 41.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (37.2°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Germantown, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Germantown, IL
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity in December
Germantown, IL
- Average humidity in December: 77%
The months with the highest relative humidity are July and August (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Germantown, IL
- Average rainfall in December: 2.52"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Germantown, IL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Germantown, IL
- Average snowfall in December: 1.22"
The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Germantown, IL
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (7.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Germantown, IL
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Germantown, IL
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (18 days).
The month with the least sunshine days is May (10.5 days).
Average UV index in December
Germantown, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Germantown, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Germantown, IL
- 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).
