Severe Thunderstorm Areas This Saturday; Excessive Heat in the Southern U.S.

Wind Speed Calculations

Enter a speed into any blank to convert to all other wind speeds.

mph knots m/sec km/hr

Wind Chill Calculation

Enter the temperature in degrees Fahrenheit and wind speed in mph, then click on the Calculate WC to compute the windchill index.

Temp
(^oF)

Wind
(mph)

Wind Chill Index

Damaging thunderstorm winds and a few tornadoes with areas of excessive rainfall are possible today over parts of the lower Great Lakes to upper Ohio Valley and Mid-Atlantic, the Ozarks, and south-central High Plains. Excessive heat will continue over the southern U.S. this weekend before another round of heat arrives Monday through the central and southern U.S. spreading into the East by midweek. Read More >

Weather Calculators

Temperature Conversion
Enter a number then click on the the conversion button.
Fahrenheit (^oF)
Celsius (^oC)

Relative Humidity Calculation
Enter the air temperature and the dew point in degrees Fahrenheit, then click on the Calculate RH to compute the relative humidity.
Temp (^oF)		Dew Point

Heat Index Calculations
Enter the temperature in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), or the Dew Point (T_dp). Then click on the Calculate HI to compute the heat index (HI).
Temp (^oF)	RH	HI	T_dp
OR
Temp (^oF)	T_dp	HI	RH