December weather forecastHeilbronn, Germany
December
Weather in December
December, the first month of the winter in Heilbronn, is also an icy month, with temperature in the range of an average low of 0.2°C (32.4°F) and an average high of 4.6°C (40.3°F).Temperature
December signifies a minor drop in average high-temperature, transitioning from a chilly 8.5°C (47.3°F) in November to an icy 4.6°C (40.3°F). During the nights of December, Heilbronn records an average temperature of 0.2°C (32.4°F), a minor drop from daytime peaks.Humidity
In Heilbronn, the average relative humidity in December is 86%.Rainfall
In Heilbronn, in December, during 15.2 rainfall days, 66mm (2.6") of precipitation is typically accumulated. In Heilbronn, during the entire year, the rain falls for 175.1 days and collects up to 581mm (22.87") of precipitation.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 6.2 days. Throughout December, 67mm (2.64") of snow is accumulated. In Heilbronn, during the entire year, snow falls for 26.9 days and aggregates up to 231mm (9.09") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 18min of daylight.On the first day of December, sunrise is at 07:56 and sunset at 16:27. On the last day of the month, sunrise is at 08:17 and sunset at 16:35 CET.
Sunshine
The average sunshine in December is 4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Heilbronn, Germany
- Average high temperature in December: 4.6°C
The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (3.1°C).
- Average low temperature in December: 0.2°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in December
Heilbronn, Germany
- Average pressure in December: 1019.5mbar
The month with the highest atmospheric pressure is December (1019.5mbar).
The month with the lowest atmospheric pressure is November (1015.2mbar).
Average wind speed in December
Heilbronn, Germany
- Average wind speed in December: 12.3km/h
The windiest month (with the highest average wind speed) is February (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in December
Heilbronn, Germany
- Average humidity in December: 86%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (72%).
Average rainfall in December
Heilbronn, Germany
- Average rainfall in December: 66mm
The wettest month (with the highest rainfall) is May (72mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Heilbronn, Germany
- Average rainfall days in December: 15.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (11.6 days).
Average snowfall in December
Heilbronn, Germany
- Average snowfall in December: 67mm
The month with the highest snowfall is January (72mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in December
Heilbronn, Germany
- Average snowfall days in December: 6.2 days
The month with the highest number of snowfall days is January (8.5 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
Heilbronn, Germany
- Average daylight in December: 8h and 18min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in December: 4h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Heilbronn, Germany
- Average sunshine days in December: 11 days
The month with the most sunshine days is October (15.2 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in December
Heilbronn, 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
Heilbronn, Germany
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Heilbronn, Germany
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).
