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
December
Weather in December
Temperature
December brings a minor decrease, with the average high-temperature reducing from a frosty 7.3°C (45.1°F) in November to a wintry 2.1°C (35.8°F). The month of December shows a minor drop from daytime temperatures, generally recording a low average of -1.5°C (29.3°F).Humidity
The average relative humidity in December is 86%.Rainfall
In Hieronimów, in December, it is raining for 12.2 days, with typically 38mm (1.5") of accumulated precipitation. Throughout the year, there are 161.4 rainfall days, and 490mm (19.29") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Hieronimów, in December, snow falls for 11.6 days, with typically accumulated 95mm (3.74") of snow. In Hieronimów, during the entire year, snow falls for 56.6 days and aggregates up to 482mm (18.98") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 0min of daylight.On the first day of the month, sunrise is at 07:15 and sunset at 15:30. On the last day of December, sunrise is at 07:37 and sunset at 15:36 CET.
Sunshine
In December, the average sunshine is 3.4h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 1 in December translates into these instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Hieronimów have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Hieronimów have in December?
What is the month with the lowest UV index in Hieronimów?
What is the UV index intensity in December?
Average temperature in December
Hieronimów, Poland
- Average high temperature in December: 2.1°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (-0.3°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is August (14.6°C).
The coldest month (with the lowest average low temperature) is January (-4°C).
Average pressure in December
Hieronimów, Poland
- Average pressure in December: 1017.6mbar
The month with the highest atmospheric pressure is October (1018.8mbar).
The month with the lowest atmospheric pressure is July (1014.1mbar).
Average wind speed in December
Hieronimów, Poland
- Average wind speed in December: 12.6km/h
The windiest month (with the highest average wind speed) is December (12.6km/h).
The calmest month (with the lowest average wind speed) is August (9.1km/h).
Average humidity in December
Hieronimów, Poland
- Average humidity in December: 86%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (67%).
Average rainfall in December
Hieronimów, Poland
- Average rainfall in December: 38mm
The wettest months (with the highest rainfall) are May and July (63mm).
The driest month (with the least rainfall) is November (27mm).
Average rainfall days in December
Hieronimów, Poland
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Hieronimów, Poland
- Average snowfall in December: 95mm
The month with the highest snowfall is January (149mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Hieronimów, Poland
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hieronimów, Poland
- 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 2h and 48min).
Average sunshine days in December
Hieronimów, Poland
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is October (15.7 days).
The month with the least sunshine days is January (8.1 days).
Average UV index in December
Hieronimów, Poland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Hieronimów, Poland
- Average cloud cover in December: 67
The months with the most cloud cover are January and February (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Hieronimów, Poland
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January and February (7km).
