The month dedicated by the Romans to Janus (q.v.). Janus
had two faces, and January could look back to the year past, and
forwards to the current year.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on January from Infoplease:
- January - January The highest temperature ever recorded for the month of January occurred on January 17, ...
- January - January For terms in boldface, see Astronomical Terms. Day Phenomenon Hour 1 Venus is 7° north ...
- January - January For terms in boldface, see Astronomical Terms. Day Phenomenon Hour 3 FULL MOON 1400 3 Earth ...