National Weather Service United States Department of Commerce

Heavy Rainfall, Gusty Winds, and Flooding Over Parts of the East

Low pressure interacting with Zeta will bring widespread heavy rainfall, areas of flooding, and gusty winds from the Ohio Valley to the East Coast. As a coastal storm develops off the Northeast coast on Friday, another round of heavy rainfall is possible for the northern Mid-Atlantic, with wintry precipitation over interior 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?