Hot, Humid Weather in Louisiana





The information here tells how often heat combines with humidity in Louisiana cities to create uncomfortably muggy weather.

The apparent temperature, also known as the Heat Index, measures how hot the weather really feels, considering both temperature and humidity. For instance, a temperature of 90 degrees Fahrenheit (32.2 ° Celsius) along with 60 % humidity pushes the apparent temperature to 100 °F (37.8 °C).

These tables list the number of days when the actual temperature and the apparent temperature rose to least 95, 105 or 115 °F (35, 40.6 or 46.1 °C) for an hour or more. The totals are for the 30 years from 1978 to 2007.

The final table breaks the totals into yearly averages for the days when apparent temperatures reach 95 and 105 °F.

Total days with the temperature at least 95 °F
City Actual Apparent
Lafayette 302 2729
Lake Charles 261 2742
New Orleans 264 2560
Shreveport 913 2477
Total days with the temperature at least 105 °F
City Actual Apparent
Lafayette 0 423
Lake Charles 2 397
New Orleans 0 463
Shreveport 10 372
Total days with the temperature at least 115 °F
City Actual Apparent
Lafayette 0 14
Lake Charles 0 8
New Orleans 0 18
Shreveport 0 2
Average days a year of apparent temperature
City 95+ °F 105+ °F
Lafayette 91 14
Lake Charles 91 13
New Orleans 85 15
Shreveport 83 12
References

Peter Browning and Brian Walawender. 2009. A Climatology of Apparent Temperature. 21st Conference on Climate Variability and Change.

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