National Weather Service United States Department of Commerce

Arctic Front to Bring Areas of Heavy Snow and Bitter Cold

Heavy snow will shift into the Upper Midwest and Great Lakes as an arctic front continues south and east. Bitter cold and dangerous wind chills can be expected across the Northern Tier states and into the Central Great Plains. A Pacific weather system will bring a wintry mix in the mountains and rain to the lower elevations. 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?