Frost dates · Maine
Maine counties by frost timing.
Latest at top, earliest at bottom. In most states this matches the north-to-south gradient.
MapList
Sorted by spring frost
Latest → earliest.
Franklin County
Spring May 10·Fall Oct 7150-day season
York County
Spring May 2·Fall Oct 7158-day season
Aroostook County
Spring May 1·Fall Oct 6158-day season
Somerset County
Spring May 1·Fall Oct 8160-day season
Oxford County
Spring Apr 30·Fall Oct 8161-day season
Piscataquis County
Spring Apr 29·Fall Oct 19173-day season
Sagadahoc County
Spring Apr 29·Fall Oct 19173-day season
Hancock County
Spring Apr 27·Fall Oct 21177-day season
Waldo County
Spring Apr 27·Fall Oct 19175-day season
Penobscot County
Spring Apr 24·Fall Oct 18177-day season
Washington County
Spring Apr 21·Fall Oct 29191-day season
Cumberland County
Spring Apr 15·Fall Nov 1200-day season
Kennebec County
Spring Apr 15·Fall Oct 31199-day season
Knox County
Spring Apr 14·Fall Nov 6206-day season
Lincoln County
Spring Apr 14·Fall Nov 1201-day season
Androscoggin County
Spring Apr 11·Fall Nov 1204-day season