Wind Chill Chart

Image from:

www.megamotormadness.com

How cold is too cold to ride? I don't mean polar bear riding either. I mean at what temperature can a guy reasonably dressed get the bike out and enjoy a ride? I looked to NOAA (National Oceanic and Atmospheric Administration) to find out. 
With a name like that you shouldn't be surprised when you see this whiz-bang formula for figuring out how to calculate wind chill:
New Wind Chill T(wc) = 35.74 + 0.6215T - 35.75(V^0.16) + 0.4275T(V^0.16) where T(wc) is the Wind Chill in degrees F, V is the Wind Speed in MPH, and T is the temperature in degrees F.

Well... I'm a dumb motorcycle rider so my suggestion is to just follow this link back to NOAA and plug it in their calculator.

http://www.crh.noaa.gov/ddc/?n=windchill

Or you can look below.

Riding Speed (MPH)	Air Temperature (degrees F)
	45	50	55	60	65	70	75	80	85	90	95	100
50	33	40	47	54	61	68	75	83	90	97	104	111
55	32	40	47	54	61	68	75	83	90	97	104	111
60	32	39	46	54	61	68	75	82	90	97	104	111
65	32	39	46	53	61	68	75	82	90	97	104	112
70	31	38	46	53	60	68	75	82	90	97	104	112
75	31	38	46	53	60	68	75	82	90	97	104	112

I took the liberty of extending out the scale on NOAA's site to riding speeds and warmer temperatures. If you would like a copy of this in either PDF or Excell just leave a comment with an email address and I'll send it to you. Blogger is very limited on what I can post. Or at least I'm not smart enough to do it.

You'll notice that at 75 degrees the scale levels off and above that it actually climbs. If it ever gets warm I'll have to remember to stay hydrated while I ride.