National Weather Service United States Department of Commerce

Below Normal Temperatures Continue

A strong cold front will sweep through the East on Wednesday with heavy wet snow from the eastern Great Lakes into northern New England and strong thunderstorms with damaging winds in the Mid-Atlantic and Northeast. The big story though will continue to be the well below average temperatures behind this storm system or east of the Rockies, as numerous record low temperatures are likely. Read More >

 

Temperature Conversion
Enter a number then click on the appropriate number to see the result.
Fahrenheit ( o F )
Celsius ( o C )

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Windchill Calculation
Enter in the air temperature ( Tair ) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill ( WC ).
Tair mph

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Relative Humidity Calculation
Enter in the air temperature ( Tair ) and dew point temperature ( Tdp) in degrees Fahrenheit ( oF ) then click on the Calculate RH to compute the relative humidity ( RH )
Tair Tdp

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Heat Index Calculation
Enter in the air temperature ( Tair ) in degrees Fahrenheit and relative humidity ( RH ) in percent, then click on the Calculate HI to compute the heat index ( HI ).
Tair RH

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Wind Chill Table