winterly

From Middle English wynturlych, from Old English winterlice; equivalent to winter +‎ -ly.[1]

winterly (comparative more winterly, superlative most winterly)

1. Of or relating to winter.
2. Happening in winter.
   • 1913, Ernest Bramah, The Knight’s Cross Signal Problem:

     One winterly day, about the year when you and I were concerned in being born, the engine-driver of a Scotch express received the ‘clear’ from a signal near a little Huntingdon station called Abbots Ripton. He went on and crashed into a goods train and into the thick of the smash a down express mowed its way.

3. Of weather, etc, characteristic of winter.
   • 1687, John Aubrey, Remaines of Gentilisme and Judaisme, page 7:

     If it be somerly weather till the Kalends of January, it will be winterly weather to the Kalends of May.

• (of or relating to winter): winter
• (happening in winter): winter
• (characteristic of winter): winterish, wintery/wintry, hiemal

• winterliness