Average Weather in December in Bierawa Poland
Daily high temperatures decrease by 4°F, from 39°F to 35°F, rarely falling below 23°F or exceeding 50°F.
Daily low temperatures decrease by 4°F, from 31°F to 27°F, rarely falling below 11°F or exceeding 40°F.
For reference, on August 6, the hottest day of the year, temperatures in Bierawa typically range from 57°F to 77°F, while on January 19, the coldest day of the year, they range from 25°F to 35°F.
Average High and Low Temperature in December
The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature in December
The month of December in Bierawa experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 63% throughout the month. The highest chance of overcast or mostly cloudy conditions is 65% on December 1.
The clearest day of the month is December 17, with clear, mostly clear, or partly cloudy conditions 38% of the time.
For reference, on November 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 65%, while on July 18, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 60%.
Cloud Cover Categories in December
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Bierawa, the chance of a wet day over the course of December is essentially constant, remaining around 20% throughout.
For reference, the year's highest daily chance of a wet day is 35% on July 5, and its lowest chance is 16% on January 26.
Over the course of December in Bierawa, the chance of a day with only rain remains an essentially constant 15% throughout, the chance of a day with mixed snow and rain remains an essentially constant 2% throughout, and the chance of a day with only snow remains an essentially constant 3% throughout.
Probability of Precipitation in December
The average sliding 31-day rainfall during December in Bierawa is essentially constant, remaining about 0.8 inches throughout, and rarely exceeding 1.6 inches or falling below 0.2 inches.
Average Monthly Rainfall in December
We report snowfall in liquid-equivalent terms. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day.
The average sliding 31-day liquid-equivalent snowfall during December in Bierawa is essentially constant, remaining about 0.2 inches throughout, and rarely exceeding 0.6 inches or falling to 0.0 inches.
The highest average 31-day liquid-equivalent accumulation is 0.2 inches on December 31.
Average Monthly Liquid-Equivalent Snowfall in December
Over the course of December in Bierawa, the length of the day is gradually decreasing. From the start to the end of the month, the length of the day decreases by 17 minutes, implying an average daily decrease of 33 seconds, and weekly decrease of 3 minutes, 54 seconds.
The shortest day of the month is December 22, with 8 hours, 2 minutes of daylight and the longest day is December 1, with 8 hours, 23 minutes of daylight.
Hours of Daylight and Twilight in December
The earliest sunrise of the month in Bierawa is 7:24 AM on December 1 and the latest sunrise is 23 minutes later at 7:46 AM on December 31.
The earliest sunset is 3:43 PM on December 12 and the latest sunset is 9 minutes later at 3:52 PM on December 31.
Daylight saving time is observed in Bierawa during 2019, but it neither starts nor ends during December, so the entire month is in standard time.
For reference, on June 21, the longest day of the year, the Sun rises at 4:36 AM and sets 16 hours, 25 minutes later, at 9:01 PM, while on December 22, the shortest day of the year, it rises at 7:44 AM and sets 8 hours, 2 minutes later, at 3:46 PM.
Sunrise & Sunset with Twilight in December
The chance that a given day will be muggy in Bierawa is essentially constant during December, remaining around 0% throughout.
For reference, on July 27, the muggiest day of the year, there are muggy conditions 3% of the time, while on October 4, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in December
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Bierawa is gradually increasing during December, increasing from 10.2 miles per hour to 11.0 miles per hour over the course of the month.
For reference, on January 24, the windiest day of the year, the daily average wind speed is 11.2 miles per hour, while on August 10, the calmest day of the year, the daily average wind speed is 7.5 miles per hour.
Average Wind Speed in December
Wind Direction in December
The growing season in Bierawa typically lasts for 6.1 months (185 days), from around April 19 to around October 21, rarely starting before March 30 or after May 8, and rarely ending before October 4 or after November 7.
The month of December in Bierawa is reliably fully outside of the growing season.
Time Spent in Various Temperature Bands and the Growing Season in December
The average accumulated growing degree days in Bierawa are essentially constant during December, remaining within 1°F of 2,159°F throughout.
Growing Degree Days in December
The average daily incident shortwave solar energy in Bierawa is essentially constant during December, remaining within 0.1 kWh of 0.9 kWh throughout.
The lowest average daily incident shortwave solar energy during December is 0.8 kWh on December 24.
Average Daily Incident Shortwave Solar Energy in December
For the purposes of this report, the geographical coordinates of Bierawa are 50.281 deg latitude, 18.242 deg longitude, and 574 ft elevation.
The topography within 2 miles of Bierawa is essentially flat, with a maximum elevation change of 92 feet and an average elevation above sea level of 579 feet. Within 10 miles is essentially flat (407 feet). Within 50 miles contains only modest variations in elevation (4,511 feet).
The area within 2 miles of Bierawa is covered by cropland (53%), artificial surfaces (20%), and trees (20%), within 10 miles by cropland (48%) and trees (39%), and within 50 miles by cropland (46%) and trees (34%).
This report illustrates the typical weather in Bierawa year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Bierawa.
For each station, the records are corrected for the elevation difference between that station and Bierawa according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
The estimated value at Bierawa is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bierawa and a given station.
The stations contributing to this reconstruction are: Katowice-Muchowiec Airport (43%, 57 kilometers, east); Leoš Janáček Airport Ostrava (35%, 66 kilometers, south); Wroclaw / Strachowice (12%, 132 kilometers, northwest); and Lask (10%, 156 kilometers, northeast).
Time zones for aiports and weather stations are provided by AskGeo.com .