Every day, the National Weather Service forecast for San Francisco will be reviewed, and the color predicting the next day's weather selected.
Glowing red, warmer weather ahead
Shining blue, colder weather in view
Going green, rain foreseen
Amber light, no change in sight.
- John Hancock Building, Boston, MA
- Syracuse, N.Y
- Minneapolis, M.N.
- Dubuque and Des Moines, Iowa
- Bismarck, N.D.
- Toronto, Canada
- Brisbane and Adelaide, Australia