This report describes the typical weather at the Dane County Regional Airport (Madison, Wisconsin, United States) weather station over the course of an average February. It is based on the historical records from 1974 to 2012. Earlier records are either unavailable or unreliable.
Madison, Wisconsin has a humid continental climate with hot summers and no dry season. The area within 25 mi of this station is covered by grasslands (49%), croplands (45%), and lakes and rivers (3%).
The month of February is characterized by rapidly rising daily high temperatures, with daily highs increasing from 27Â°F to 36Â°F over the course of the month, exceeding 49Â°F or dropping below 12Â°F only one day in ten.
Over the course of February, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 1:16 hours, implying an average day-over-day increase of 2.6 minutes.
The shortest day of the month is February 1 with 9:56 hours of daylight; the longest day is February 29 with 11:12 hours of daylight.
The earliest sunrise is at 6:34am on February 29; the latest sunset is at 5:46pm on February 29; the latest sunrise is at 7:13am on February 1; the earliest sunset is at 5:09pm on February 1.
Daylight savings time is observed in 2012 but it neither starts nor ends in February, so the entire month is in standard time.
The median cloud cover is 83% (mostly cloudy) and does not vary substantially over the course of the month.
On February 15, a representative day, the sky is clear or mostly clear 38% of the time, partly cloudy 8% of the time, and mostly cloudy or overcast 54% of the time.
The probability that precipitation will be observed at this location varies throughout the month. Precipitation is most likely around February 1, occurring in 58% of days. Precipitation is least likely around February 29, occurring in 53% of days.
Throughout February, the most common forms of precipitation are light snow and moderate snow.
Light snow is the most severe precipitation observed during 61% of those days with precipitation. It is most likely around February 1, when it is observed during 38% of all days.
Moderate snow is the most severe precipitation observed during 17% of those days with precipitation. It is most likely around February 1, when it is observed during 10% of all days.
The likelihood of snow falling is highest around February 1, occurring in 50% of days.
Accumulation at this location in February is likely. The chances of there being snow on the ground are highest around February 2, occurring 82% of the time.
The snow is typically at its deepest on February 1, with a median depth of 4.9"; the depth exceeds 11.9" only one year out of ten.
The relative humidity typically ranges from 55% (mildly humid) to 89% (very humid) over the course of a typical February, rarely dropping below 36% (comfortable) and reaching as high as 98% (very humid).
The air is driest around February 29, at which time the relative humidity drops below 64% (mildly humid) three days out of four; it is most humid around February 28, rising above 84% (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 typical February, the dew point typically varies from 5Â°F (dry) to 26Â°F (dry) and is rarely below -15Â°F (dry) or above 39Â°F (dry).
Over the course of February typical wind speeds vary from 1 mph to 16 mph (light air to moderate breeze), rarely exceeding 22 mph (fresh breeze).
The highest average wind speed of 9 mph (gentle breeze) occurs around February 28, at which time the average daily maximum wind speed is 16 mph (moderate breeze).
The lowest average wind speed of 9 mph (gentle breeze) occurs around February 11, at which time the average daily maximum wind speed is 15 mph (moderate breeze).