Station by station
When does the ground freeze in Maine?
Each bar runs from the typical first freeze to the typical last thaw at that depth, the median over the station's complete winters on record, with the typical number of frozen days after it. Frost reaches the deeper probes later in the winter. A depth that froze in fewer than half of its winters has no typical dates. Stations: 2 typically freeze.
Limestone 4 NNW
USCRNTypically freezes to 8 inches, not to 20.
2 in2 inches: typically frozen from Dec 14 to Apr 8, a median of 79 frozen days.79 days
4 in4 inches: typically frozen from Dec 15 to Apr 15, a median of 76 frozen days.76 days
8 in8 inches: typically frozen from Dec 18 to Mar 15, a median of 33 frozen days.33 days
20 inFroze in 0 of 5 winters, no typical dates
40 inFroze in 0 of 5 winters, no typical dates
Nov 3, 2026: Not frozen
Old Town 2 W
USCRNTypically freezes to 2 inches, not to 4.
2 in2 inches: typically frozen from Jan 5 to Mar 27, a median of 83 frozen days.83 days
4 inFroze in 1 of 3 winters, no typical dates
8 inFroze in 0 of 3 winters, no typical dates
20 inFroze in 0 of 3 winters, no typical dates
40 inFroze in 0 of 1 winters, no typical dates
Nov 3, 2026: Not frozen
A winter runs July to June. Our station readings come from one grass-covered site per station at five fixed depths, and often show shallower frost than regional figures.
