Wind Chill Calculator
How cold it actually feels with wind.
Feels like
6.2 °F
-14.3 °C
Formula from the U.S. National Weather Service (2001 revision): T_chill = 35.74 + 0.6215·T − 35.75·V^0.16 + 0.4275·T·V^0.16, with T in °F and V in mph.
About
The official US/Canadian wind chill formula (2001 update). Wind speeds up heat loss from exposed skin. At 30F with 30 mph wind, it feels like 15F. The formula only works above 4 mph and below 50F.
How to use
- Enter air temperature.
- Enter wind speed.
- See wind chill.
FAQ
Why does it feel colder with wind?+
Skin warms a thin layer of air around it. Wind blows that warm layer away, so heat keeps leaving. The colder and windier, the bigger the effect.
What about heat index?+
Different formula, opposite effect. Heat index is how hot it feels with humidity. Use that for summer, wind chill for winter.