This may seem weird, but measuring temperature was a big problem at the time. It comes from Daniel Gabriel Fahrenheit, a German scientist born in Poland in 1686.Īs a young man, Fahrenheit became obsessed with thermometers. Fahrenheit was a great temperature system 300 years agoīack in the early 18th century, the Fahrenheit measurement system was actually pretty useful. Why does the United States have such an antiquated system of measurement? You can blame two of history's all-time greatest villains: British colonialism and Congress. One conversion error between US and metric measurements sent a $125 million NASA probe to its fiery death in Mars' atmosphere. America's stubborn unwillingness to get rid of Fahrenheit temperatures is part of its generally dumb refusal to change over to the metric system, which has real-world consequences. In Fahrenheit, those are, incomprehensibly, 32 and 212. This makes sense Celsius is a reasonable scale that assigns freezing and boiling points of water with round numbers, zero and 100. Valid entries are, air temperatures greater than 80 ☏ ( 27 ☌ ), dew point temperatures greater than 65 ☏ ( 12 ☌ ), and relative humidities higher than 40 percent.Įnter in the air temperature ( T air ) and the dew point temperature ( T dp ) in degrees Celsius, then click on the Calculate HI to compute the heat index ( HI).Įnter in the air temperature ( T air ) the dew point temperature ( T dp ) in degrees Fahrenheit, then click on the Calculate HI to compute the heat index ( HI).Įnter in the air temperature ( T air ) in degrees Celsius and relative humidity ( RH ) in percent ( without the % sign ), then click on the Calculate HI to compute the heat index ( HI ).Įnter in the air temperature ( T air ) in degrees Fahrenheit and relative humidity ( RH ) in percent ( without the % sign ), then click on the Calculate HI to compute the heat index ( HI ).Virtually every country on earth aside from the United States measures temperature in Celsius.
Relative Humidity Calculation using degrees CelsiusĮnter in the air temperature ( T air ) and dew point temperature ( T dp) in degrees Celsius ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ). Relative Humidity Calculation using degrees FahrenheitĮnter in the air temperature ( T air ) and dew point temperature ( T dp) in degrees Fahrenheit ( oF ) then click on the Calculate RH to compute the relative humidity ( RH ). Wind Chill/Temperature Index Calculation in degrees CelsiusĮnter in the air temperature ( T air ) in degrees Celsius and wind speed in miles per hour, then click on the Calculate WC to compute the windchill ( WC ). Wind Chill/Temperature Index Calculation in degrees FahrenheitĮnter in the air temperature ( T air ) in degrees Fahrenheit and wind speed in mile per hour ( mph ), then click on the Calculate WC to compute the windchill ( WC ).įor more information about windchill (ie.
Temperature Conversion Enter a number then click on the appropriate number to see the result.
F TO C WEATHER CALCULATOR CODE
Great thanks to Ron Murphy of WFO Binghamton NY for writing all of the code used on this page!įor more information about the indices and equations used
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