NWS Wind Chill Chart and Formula

Note: Wind chill is only defined for temperatures in the range -45°F to +45°F and wind speeds 3 to 60 mph.

Javascript Wind Chill Calculator - National Weather Service

Report on Wind Chill Temperature and Extreme Heat Indices: Evaluation and Improvement Projects - Office of the Federal Coordinator for Meteorology provides this report describing the joint US and Canadian replacement wind chill index project, implemented for the 2001-2002 winter season, and other extreme heat formula evaluations.

NWS Wind Chill Temperature Index - Explains the changes to the index. Includes a wind chill chart, a calculator, and a graph comparing the old index with the new.

Thermal Comfort Observations - Australia Bureau of Meteorology


Old Wind Chill Chart (used before November 1, 2001)

Wind
(mph)
Temperature (F)
35302520151050-5-10-15-20-25
5322722161160-5-10-15-21-26-31
102216103-3-9-15-22-27-34-40-46-52
151692-5-11-18-25-31-38-45-51-58-65
20124-3-10-17-24-31-39-46-53-60-67-74
2581-7-15-22-29-36-44-51-59-66-74-81
306-2-10-18-25-33-41-49-56-64-71-79-86
354-4-12-20-27-35-43-52-58-67-74-82-92
403-5-13-21-29-37-45-53-60-69-76-84-92
Wind speeds above 40 mph have little additional chilling effect.

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