Weather Calculator	weather.jimlittle.net

Temperature Conversion
Enter a number then click on the appropriate number to see the result.
Fahrenheit (o F)
Celsius (o C)

Windchill Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill (WC). (Note: Wind Chill Temperature is only defined for temperatures at or below 50 degrees F and wind speeds above 3 mph.)
Tair		Wind (mph)			New Wind Chill Index	Old Wind Chill Index
More information about the windchill equation.

Relative Humidity Calculation
Enter in the air temperature (Tair) and dew point temperature (Tdp) in degrees Fahrenheit (oF) then click on the Calculate RH to compute the relative humidity (RH).
Tair		Tdp

Heat Index Calculation
Enter in the air temperature (Tair) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on the Calculate HI to compute the heat index (HI).
Tair		RH				Tdp=
OR
Tair		Tdp				RH=
More information about the heat index equation.

Wind Speed Conversion
Enter a wind speed in the box below...then select "convert".
	Answers:
mph	mph
knots	knots
m/s	m/s
ft/s	ft/s
km/h	km/h

Station Pressure Calculation
What is the current altimeter (inches)?
What is the station elevation? (feet)
The Station Pressure in inches is:
The Station Pressure in millibars is:
The Pressure Altitude is (feet):