This report describes the typical weather at the Baraboo-Wisconsin Dells Airport (Baraboo, Wisconsin, United States) weather station over the course of an average year. It is based on the historical records from 1997 to 2012. Earlier records are either unavailable or unreliable.
Baraboo, Wisconsin has a humid continental climate with warm summers and no dry season. The area within 25 mi of this station is covered by grasslands (70%), croplands (26%), and lakes and rivers (3%).
Over the course of a year, the temperature typically varies from 12Â°F to 82Â°F and is rarely below -4Â°F or above 89Â°F.
The warm season lasts from May 26 to September 18 with an average daily high temperature above 71Â°F. The hottest day of the year is July 24, with an average high of 82Â°F and low of 63Â°F.
The cold season lasts from December 1 to March 4 with an average daily high temperature below 37Â°F. The coldest day of the year is January 20, with an average low of 12Â°F and high of 26Â°F.
The length of the day varies significantly over the course of the year. The shortest day is December 21 with 8:57 hours of daylight; the longest day is June 20 with 15:25 hours of daylight.
The earliest sunrise is at 5:17am on June 14 and the latest sunset is at 8:45pm on June 26. The latest sunrise is at 7:37am on November 3 and the earliest sunset is at 4:22pm on December 10.
Daylight saving time (DST) is observed in this location during 2012, starting in the spring on March 11 and ending in the fall on November 4.
The median cloud cover ranges from 20% (mostly clear) to 76% (partly cloudy). The sky is cloudiest on January 3 and clearest on July 17. The clearer part of the year begins around April 1. The cloudier part of the year begins around November 1.
On July 17, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 68% of the time, and overcast or mostly cloudy 29% of the time.
On January 3, the cloudiest day of the year, the sky is overcast, mostly cloudy, or partly cloudy 59% of the time, and clear or mostly clear 37% of the time.
The probability that precipitation will be observed at this location varies throughout the year. Precipitation is most likely around January 3, occurring in 52% of days. Precipitation is least likely around September 13, occurring in 35% of days.
Over the entire year, the most common forms of precipitation are moderate rain, light snow, light rain, and heavy rain.
Moderate rain is the most severe precipitation observed during 27% of those days with precipitation. It is most likely around May 11, when it is observed during 20% of all days.
Light snow is the most severe precipitation observed during 26% of those days with precipitation. It is most likely around January 18, when it is observed during 34% of all days.
Light rain is the most severe precipitation observed during 16% of those days with precipitation. It is most likely around June 8, when it is observed during 13% of all days.
Heavy rain is the most severe precipitation observed during 12% of those days with precipitation. It is most likely around July 29, when it is observed during 10% of all days.
During the warm season, which lasts from May 26 to September 18, there is a 40% 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 (35% of days with precipitation have at worst moderate rain), light rain (28%), heavy rain (23%), and thunderstorms (11%).
During the cold season, which lasts from December 1 to March 4, there is a 50% 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 snow (60% of days with precipitation have at worst light snow), moderate snow (23%), and moderate rain (7%).
The likelihood of snow falling is highest around January 18, occurring in 48% of days. The season in which it is relatively likely for snow to fall spans from November 10 to April 4.
Either snow rarely accumulates at this location or snow depth measurements are unavailable or unreliable.
The relative humidity typically ranges from 41% (comfortable) to 97% (very humid) over the course of the year, rarely dropping below 21% (dry) and reaching as high as 100% (very humid).
The air is driest around April 19, at which time the relative humidity drops below 50% (mildly humid) three days out of four; it is most humid around August 22, 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 6Â°F (dry) to 69Â°F (muggy) and is rarely below -12Â°F (dry) or above 77Â°F (oppressive).
There are two periods in the year that are most comfortable: The first is between May 9 and June 27 and the second is between August 26 and October 7. 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 16 mph (calm to moderate breeze), rarely exceeding 23 mph (fresh breeze).
The highest average wind speed of 8 mph (gentle breeze) occurs around April 6, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 5 mph (light breeze) occurs around August 30, at which time the average daily maximum wind speed is 11 mph (gentle breeze).