You know it is windy when:
1. Pedaling required down a 6% grade just to maintain forward momentum.
2. Skin tight spandex flaps in the wind.
3. Being passed by a loser on a recumbent.
4. Strange white crustiness develops around the mouth.
5. Sun burn superseded by wind burn on face.
6. Ambient temperature is plus 20 but feels like plus 5 degrees C.
7. You plead with the devil to instantly become 1 foot shorter and 100 lbs lighter.
8. You ride in echelon formation (shown below)