Dangerous Cold Weather for Most of the Country; Rare Winter Storm for the South; Fire Weather Concerns for Southern California

Arctic air will filter south and east through early this week. As this cold air moves across the South, a rare winter storm is forecast to develop from Texas, Gulf Coast States into the Southeast through early this week. Several new daily record low temperatures are expected, including new record-low maximum temperatures. For Southern California, fire weather concerns increase this week. Read More >

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Not sure how to convert Fahrenheit to Celsius? Would you like to calculate the Heat Index or Wind Chill Factor? You have come to the right place!

Meteorological Calculator

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

Wind Chill Index Calculation
Enter in the air temperature (T_air) in degrees Fahrenheit and wind speed (mph), then click "Compute WC" to get the wind chill index (WCI). For more information about the WCI, click here.
T_air		mph

Relative Humidity Calculation
Enter in the air temperature (T_air) and dew point temperature (T_dp) in degrees Fahrenheit (^oF) then click on "Compute RH" to get the relative humidity (RH).
T_air		T_dp

Heat Index Calculation
Enter in the air temperature (T_air) in degrees Fahrenheit and relative humidity (RH) in percent (without the % sign), then click on "Get HI" to compute the heat index (HI). For more information about the HI, click here.
T_air	RH	T_dp=
OR
T_air	T_dp	RH=

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Dangerous Cold Weather for Most of the Country; Rare Winter Storm for the South; Fire Weather Concerns for Southern California

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