temperature: Quick Facts

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Last updated

Oct. 31, 2026

News •

Cold Triggers a Hidden Molecular Pathway That Extends Lifespan, Study Finds • Oct. 29, 2026, 8:42 PM ET (ScienceAlert)

Weekend weather brings shock to the system as temps dive • Oct. 18, 2026, 5:30 AM ET (The Weather Channel)

Photos and Videos

Round thermometer mounted outside a window shows a temperature below 0 degrees Fahrenheit. The window has frost and cracks, with snow on the sill.

Three thermometers compare temperature scales, showing absolute zero, freezing, and boiling points of water in Celsius, Fahrenheit, and Kelvin, with labeled values for each scale.

Two world maps compare projected changes in average surface temperature between 2020-2029 and 2090-2099, relative to 1980-1999. The 2020s map shows mostly light yellow and orange shades, indicating moderate warming across most continents. By the 2090s, the map is dominated by dark red and purple, especially in northern latitudes, illustrating much higher temperature increases globally. A color scale at right shows temperature changes in degrees Celsius and Fahrenheit.

Three line graphs display trends from 1850 to 2000: global average temperature and sea level both rise, while Northern Hemisphere snow cover declines, illustrating climate change impacts.

pure water and temperature

A graph plots reduced magnetization versus reduced temperature for a magnet, showing experimental curves for nickel and a nickel-copper alloy, and a theoretical curve for J equals one-half. Magnetization decreases as temperature approaches the critical point.

global average surface temperature

A vertical temperature scale shows the cryogenic region, highlighted from absolute zero up to about 90 kelvin, with key points where gases like oxygen, nitrogen, hydrogen, and helium liquefy, alongside temperature conversions between kelvin, Celsius, Fahrenheit, and Rankine.

Study the phenomena of ferromagnetism, antiferromagnetism, and paramagnetism and also how temperature affects magnetic properties

Understand temperature, thermal energy and how temperature affects the skin

What would happen if Earth's temperature rose by 2 °C?

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Topics

surface temperature diurnal temperature range temperature differential air temperature cold water temperature colour temperature mean temperature potential temperature isothermy radiation radioactivity relativity cluster isomerism phase elasticity entropy polarity yield strength

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Key People

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George Dollond

British optician

P.W. Bridgman

Percy Williams Bridgman

American physicist

C. Wyville Thomson, 1877.

Sir C. Wyville Thomson

Scottish naturalist

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H.L. Callendar

British scientist

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Guillaume Amontons

French physicist

rain. Child in the rain, wearing a rain coat, under a yellow umbrella. April Showers weather climate rain storm water drops

April Showers to March’s Lions and Lambs

Iceland, Glacier lagoon (Jokulsarlon)

Winter Weather Words Quiz