National Weather Service United States Department of Commerce

Heavy Rain Continues over Portions of the Pacific Northwest

Heavy rain with local flooding will continue along the Washington and Oregon coasts for the next few days. Snow will impact the higher elevations of the Cascades to the northern Rockies. Strong winds will develop in the Sierra and Great Basin. Meanwhile, heavy rain is possible in parts of Florida while light snow will fall in the Upper Great Lakes and northern New England. Read More >

Relative Humidity

by Tim Brice and Todd Hall
 
 
Enter a temperature, relative humidity and actual station pressure
 
Temperature:  wet-bulb  unit

dewpoint

Fahrenheit Celsius Kelvin Fahrenheit
RH: Celsius
% Kelvin
Enter your actual station pressure (not the altimeter setting):  
in of mercury mm of mercury millibars (hPA)  

 

What is the formula for the relative humidity script?