Once two friends and I rode from Savannah to Savannah Beach into such nasty headwinds that it took us three hours to ride those eighteen miles - and those headwinds were only half the strength of what these folks would have been dealing with. Good call to cancel the ride.
Here in the Midwest, late winter / early spring is headwind season. We had gusts of 45 MPH+ and a steady 30 mph wind on a ride I did last week. It was f$%&ing ridiculous as a headwind and downright dangerous as a cross wind. On one small climb I was absolutely redlining in a 39x25 at 11 mph. The next day, trees were down all over the neighborhood.