December weather forecastGrefrath, Germany
December
Weather in December
December, the first month of the winter in Grefrath, is also a frosty month, with an average temperature fluctuating between 6°C (42.8°F) and 2.4°C (36.3°F).Temperature
Grefrath's transition into December involves a gentle shift in temperature, receding from a frosty 9.6°C (49.3°F) in November to a still chilly 6°C (42.8°F). During December's nights, Grefrath notes a minor temperature decline, reaching an average of 2.4°C (36.3°F).Humidity
December is the most humid month in Grefrath, with an average relative humidity of 87%.Rainfall
The months with the most rainfall in Grefrath are June, July and December, with an average 46mm (1.81") of precipitation.Snowfall
Months with snowfall are January through March, November and December. In December, it is snowing for 3.2 days. Throughout December, 21mm (0.83") of snow is accumulated. In Grefrath, during the entire year, snow falls for 13.8 days and aggregates up to 101mm (3.98") of snow.Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year.On the first day of December in Grefrath, sunrise is at 08:17 and sunset at 16:29. On the last day of the month, sunrise is at 08:39 and sunset at 16:36 CET.
Sunshine
With an average of 3.6h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Grefrath are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. To cut down UV radiation exposure by about half, sport a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grefrath, Germany
- Average high temperature in December: 6°C
The warmest months (with the highest average high temperature) are July and August (23.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in December: 2.4°C
The month with the highest average low temperature is August (14.4°C).
The coldest month (with the lowest average low temperature) is January (1°C).
Average pressure in December
Grefrath, Germany
- Average pressure in December: 1016.1mbar
The month with the highest atmospheric pressure is September (1017.4mbar).
The month with the lowest atmospheric pressure is November (1012.8mbar).
Average wind speed in December
Grefrath, Germany
- Average wind speed in December: 17km/h
The windiest month (with the highest average wind speed) is December (17km/h).
The calmest months (with the lowest average wind speed) are July and August (11.2km/h).
Average humidity in December
Grefrath, Germany
- Average humidity in December: 87%
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are April and August (73%).
Average rainfall in December
Grefrath, Germany
- Average rainfall in December: 46mm
The wettest months (with the highest rainfall) are June, July and December (46mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in December
Grefrath, Germany
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is April (12.2 days).
Average snowfall in December
Grefrath, Germany
- Average snowfall in December: 21mm
The month with the highest snowfall is January (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Grefrath, Germany
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is February (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Grefrath, Germany
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in December: 3h and 36min
The month with the most sunshine is August (Average sunshine: 9h and 30min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in December
Grefrath, Germany
- Average sunshine days in December: 11.4 days
The month with the most sunshine days is October (15.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Grefrath, Germany
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Grefrath, Germany
- Average cloud cover in December: 61
The month with the most cloud cover is December (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Grefrath, Germany
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
