This report describes the typical weather at the Spangdahlem Air Base (Spangdahlem, Germany) weather station over the course of an average year. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Spangdahlem has a mild humid temperate climate with warm summers and no dry season. The area within 25 mi of this station is covered by croplands (67%) and grasslands (32%).
Over the course of a year, the temperature typically varies from 30Â°F to 74Â°F and is rarely below 18Â°F or above 84Â°F.
The warm season lasts from June 3 to September 6 with an average daily high temperature above 67Â°F. The hottest day of the year is August 5, with an average high of 74Â°F and low of 56Â°F.
The cold season lasts from November 14 to March 5 with an average daily high temperature below 45Â°F. The coldest day of the year is February 9, with an average low of 30Â°F and high of 39Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:04 hours of daylight; the longest day is June 20 with 16:22 hours of daylight.
The earliest sunrise is at 5:23am on June 16 and the latest sunset is at 9:47pm on June 25. The latest sunrise is at 8:32am on January 2 and the earliest sunset is at 4:31pm 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 60% (partly cloudy) to 92% (mostly cloudy). The sky is cloudiest on December 24 and clearest on July 23. The clearer part of the year begins around March 23. The cloudier part of the year begins around October 15.
On July 23, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 46% of the time, and overcast or mostly cloudy 25% of the time.
On December 24, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 63% of the time, and clear or mostly clear 10% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around December 29, occurring in 72% of days. Precipitation is least likely around August 22, occurring in 52% of days.
Over the entire year, the most common forms of precipitation are light rain, moderate rain, and light snow.
Light rain is the most severe precipitation observed during 33% of those days with precipitation. It is most likely around October 6, when it is observed during 26% of all days.
Moderate rain is the most severe precipitation observed during 30% of those days with precipitation. It is most likely around October 23, when it is observed during 23% of all days.
Light snow is the most severe precipitation observed during 10% of those days with precipitation. It is most likely around February 3, when it is observed during 17% of all days.
During the warm season, which lasts from June 3 to September 6, there is a 55% 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 light rain (38% of days with precipitation have at worst light rain), moderate rain (33%), and thunderstorms (25%).
During the cold season, which lasts from November 14 to March 5, there is a 69% 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 rain (25% of days with precipitation have at worst moderate rain), light rain (24%), light snow (21%), and moderate snow (16%).
The likelihood of snow falling is highest around February 1, occurring in 33% of days. The season in which it is relatively likely for snow to fall spans from November 12 to April 15.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 49% (comfortable) to 95% (very humid) over the course of the year, rarely dropping below 30% (comfortable) and reaching as high as 100% (very humid).
The air is driest around April 17, at which time the relative humidity drops below 60% (mildly humid) three days out of four; it is most humid around November 9, exceeding 92% (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 25Â°F (dry) to 58Â°F (comfortable) and is rarely below 13Â°F (dry) or above 64Â°F (mildy humid).
The time of the year between May 25 and October 8 is the most comfortable, with dew points that are neither too dry nor too muggy.
Over the course of the year typical wind speeds vary from 0 mph to 13 mph (calm to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around January 21, at which time the average daily maximum wind speed is 13 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around August 5, at which time the average daily maximum wind speed is 11 mph (gentle breeze).