Knowra Winter Winter Winter is the coldest season of the year in each hemisphere, occurring between autumn and spring. Its timing follows Earth’s axial tilt and orbit, not its distance from the Sun.
Earth's axial tilt : Earth’s rotation axis is tilted about 23.4 degrees relative to the plane of its orbit around the Sun. A hemisphere tilts away from the Sun in winter, reducing daylight and the Sun’s height in the sky.
Autumn : The temperate season between summer and winter, often marked by declining temperatures and daylight. Winter follows autumn in the annual temperate-season cycle.
Winter storm : A storm involving winter precipitation such as snow, sleet, or freezing rain, often with strong winds. Severe storms are among winter’s most consequential weather hazards.
Summer : The warmest season of the year in each hemisphere, occurring between spring and autumn. Summer has the longest days and generally contrasts with winter’s short days and cold.
Winter solstice : The solstice when a hemisphere has its shortest day and longest night of the year. It marks the astronomical start of winter in that hemisphere.
Spring : The temperate season between winter and summer, often marked by rising temperatures and daylight. Spring follows winter as daylight and warmth increase.
Snow removal : The clearing of snow and ice from roads, paths, and other surfaces. Communities use it to keep routes usable during snowy winter weather.
Meteorological winter : A fixed three-month season defined by calendar months: December through February in the Northern Hemisphere and June through August in the Southern Hemisphere. This calendar-based convention differs from the astronomical season, which begins at the solstice.
Solar elevation angle : The angle of the Sun above the horizon at a particular place and time. The Sun’s lower winter angle spreads its energy over a larger area.
Temperature : A physical measure of the average kinetic energy of particles in a substance. Seasonal temperature patterns give winter its familiar association with cold.
Show all 21