# formula for windchill?
**URL:** https://boards.straightdope.com/t/formula-for-windchill/4964
**Category:** Factual Questions
**Created:** [November 27, 1999, 3:49am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964 "1999-11-27T03:49:00Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@system](https://boards.straightdope.com/u/system)
#### Post date: [November 27, 1999, 3:49am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964/1 "1999-11-27T03:49:00Z")
## Someone ask me the other day how meteorologists figure the windchill…when they say the temp is 35 degrees but it feels like 28 degrees what formula are they using?? Anyone?
I’m the best there is fats…even if you beat me I’m still the best…
Paul Newman in The Hustler
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### Author:  [@Lord\_Jim](https://boards.straightdope.com/u/Lord_Jim)
#### Post date: [November 27, 1999, 4:07am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964/2 "1999-11-27T04:07:00Z")
I got this off of Dr. Dewpoint on Intellicast. (insert TM symbols where they belong). [http://www.intellicast.com/DrDewpoint/Q\_A/2029/](http://www.intellicast.com/DrDewpoint/Q_A/2029/)
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### Author:  [@Lord\_Jim](https://boards.straightdope.com/u/Lord_Jim)
#### Post date: [November 27, 1999, 4:09am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964/3 "1999-11-27T04:09:00Z")
Well I meant to add this to the previous post.
The following equation can be used if the wind speed in mph (V) and the temperature
in deg. Fahrenheit (T) are known (SQRT = square root):
TWC=91.4-((91.4-T)_(.478+(.301_SQRT(V))-.02\*V))
(NOTE: AT WIND SPEEDS OF 4 MPH OR LESS, TWC IS THE SAME AS THE ACTUAL AIR TEMPERATURE).
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### Author:  [@Andy](https://boards.straightdope.com/u/Andy)
#### Post date: [November 28, 1999, 2:31am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964/4 "1999-11-28T02:31:00Z")
Isn’t the WCF considered to be almost constant at very high wind speeds, including as that speed increases markedly? Does this formula take account of this?
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### Author:  [@Lord\_Jim](https://boards.straightdope.com/u/Lord_Jim)
#### Post date: [November 28, 1999, 2:42am UTC](https://boards.straightdope.com/t/formula-for-windchill/4964/5 "1999-11-28T02:42:00Z")
I don’t really know, the only note had to do with the lower end that I saw.