National Weather Service United States Department of Commerce

Heavy Rain from Fay Remnants; Severe Thunderstorms Central U.S.; Dangerous Heat in the South

Post-Tropical Fay will bring heavy rainfall which may result in flooding in areas with poor drainage across portions of upstate New York today. Severe thunderstorms with damaging winds and hail are possible today from parts of Kansas and Oklahoma into the lower and mid Mississippi Valley. Heat Advisories and Excessive Heat Warnings are in effect through this weekend across the Southern U.S. Read More >

Dewpoint

by Tim Brice and Todd Hall
 
 
Enter a temperature, dewpoint and actual station pressure
 
Temperature:  wet-bulb temperature
Fahrenheit Celsius Kelvin Fahrenheit
Dewpoint: Celsius
Fahrenheit Celsius Kelvin Kelvin
Enter your actual station pressure (not the altimeter setting):  relative humidity
in of mercury mm of mercury millibars (hPA) %

 

What is the formula for the dewpoint script?