National Weather Service United States Department of Commerce
 
 Temperature Conversion   
Enter a temperature in Fahrenheit or Celsius, then click on "Convert" to see the result.
  Temperature   Temperature  
  oF oC  
  oC oF  
 Relative Humidity Calculation   
Enter the temperature and either the dew point temperature or wet bulb temperature (in degrees Fahrenheit),^Mthen click on "Calculate" to compute the relative humidity.
Temperature Dew Point   Rel. Humidity
oF oF %
Temperature Wet Bulb Temp.   Rel. Humidity
oF oF %
 Heat Index Calculation   
Enter the temperature in degrees Fahrenheit and the relative humidity in percent, then click on "Calculate" to compute the heat index.
Temperature Rel. Humidity   Heat Index  
oF % oF
 Wind Chill Calculation   
Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on "Calculate" to compute the wind chill.
Temperature Wind Speed   Wind Chill  
oF mph oF
 Storm Distance Calculator   
Enter the latitude and longitude of a storm and your city (or any two points) to find the distance between them.
City Storm   Distance  
Lat: oN
Lon: oW
Lat: oN
Lon: oW
Miles