This report describes the typical weather at the Banja Luka International Airport (Banja Luka, Bosnia and Herzegovina) weather station over the course of an average year. It is based on the historical records from 2002 to 2012. Earlier records are either unavailable or unreliable.
Banja Luka has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by forests (58%), croplands (36%), and grasslands (5%).
Over the course of a year, the temperature typically varies from 25°F to 84°F and is rarely below 11°F or above 93°F.
The warm season lasts from May 30 to September 10 with an average daily high temperature above 75°F. The hottest day of the year is July 13, with an average high of 84°F and low of 62°F.
The cold season lasts from December 2 to February 28 with an average daily high temperature below 47°F. The coldest day of the year is February 2, with an average low of 25°F and high of 40°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:49 hours of daylight; the longest day is June 20 with 15:37 hours of daylight.
The earliest sunrise is at 5:04am on June 13 and the latest sunset is at 8:41pm on June 28. The latest sunrise is at 7:29am on January 5 and the earliest sunset is at 4:10pm on December 10.
Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 25 and ending in the fall on October 28.
The median cloud cover ranges from 53% (partly cloudy) to 91% (mostly cloudy). The sky is cloudiest on December 29 and clearest on July 11. The clearer part of the year begins around April 8. The cloudier part of the year begins around October 2.
On July 11, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 36% of the time, and overcast or mostly cloudy 17% of the time.
On December 29, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 57% of the time, and clear or mostly clear 8% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around May 9, occurring in 58% of days. Precipitation is least likely around August 5, occurring in 42% of days.
Over the entire year, the most common forms of precipitation are moderate rain, thunderstorms, light rain, and moderate snow.
Moderate rain is the most severe precipitation observed during 33% of those days with precipitation. It is most likely around November 12, when it is observed during 26% of all days.
Thunderstorms are the most severe precipitation observed during 27% of those days with precipitation. They are most likely around June 19, when it is observed during 33% of all days.
Light rain is the most severe precipitation observed during 15% of those days with precipitation. It is most likely around April 17, when it is observed during 10% of all days.
Moderate snow is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around February 15, when it is observed during 19% of all days.
During the warm season, which lasts from May 30 to September 10, there is a 45% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of thunderstorms (61% of days with precipitation have at worst thunderstorms), moderate rain (24%), and light rain (13%).
During the cold season, which lasts from December 2 to February 28, there is a 54% average chance that precipitation will be observed at some point during a given day. When precipitation does occur it is most often in the form of moderate snow (29% of days with precipitation have at worst moderate snow), moderate rain (28%), light snow (16%), and light rain (14%).
The likelihood of snow falling is highest around February 11, occurring in 32% of days. The season in which it is relatively likely for snow to fall spans from November 19 to April 3.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 44% (comfortable) to 97% (very humid) over the course of the year, rarely dropping below 26% (dry) and reaching as high as 100% (very humid).
The air is driest around July 13, at which time the relative humidity drops below 52% (mildly humid) three days out of four; it is most humid around October 14, exceeding 95% (very humid) three days out of four.
Dew point is often a better measure of how comfortable a person will find the weather than relative humidity because it more directly relates to whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.
Over the course of a year, the dew point typically varies from 22°F (dry) to 65°F (muggy) and is rarely below 7°F (dry) or above 70°F (muggy).
There are two periods in the year that are most comfortable: The first is between April 20 and July 24 and the second is between July 28 and October 17. The air feels neither too dry nor too muggy during these periods.
Over the course of the year typical wind speeds vary from 0 mph to 9 mph (calm to gentle breeze), rarely exceeding 15 mph (moderate breeze).
The highest average wind speed of 6 mph (light breeze) occurs around March 15, at which time the average daily maximum wind speed is 9 mph (gentle breeze).
The lowest average wind speed of 3 mph (light air) occurs around January 5, at which time the average daily maximum wind speed is 5 mph (light breeze).