IceOutDates.com

Minnesota · Douglas County

Mary Lake Ice-Out Dates

The ice usually goes out of Mary Lake around April 13 — the second week of April. Earliest ever: March 25 (2000). Latest: May 2 (1979).

Mary Lake ice-out dates, 1966–2026MarAprMay1966: April 171969: April 201970: April 271971: April 191974: April 211976: April 121977: April 141978: April 241979: May 21980: April 221981: March 311982: April 251984: April 161987: April 71988: April 131990: April 171991: April 71992: April 51993: April 191994: April 171995: April 211996: April 231997: April 251998: April 71999: April 92000: March 252001: April 242002: April 162003: April 132004: April 72005: April 102006: April 112007: April 42008: April 32010: April 22015: April 112016: March 252017: April 22019: April 212020: April 112022: April 272023: May 12025: April 11Usually Apr 132026: April 112026
April 13Usually around
March 25Earliest ever (2000)
May 2Latest ever (1979)
44Years of record (1966–2026)

The 2027 season

Tracking resumes when the ice forms.

Every recorded ice-out

44 years on the books, 1966–2026. Newest first.

YearIce-out date
2026April 11
2025April 11
2023May 1
2022April 27
2020April 11
2019April 21
2017April 2
2016March 25
2015April 11
2010April 2
2008April 3
2007April 4
2006April 11
2005April 10
2004April 7
2003April 13
2002April 16
2001April 24
2000March 25
1999April 9
1998April 7
1997April 25
1996April 23
1995April 21
1994April 17
1993April 19
1992April 5
1991April 7
1990April 17
1988April 13
1987April 7
1984April 16
1982April 25
1981March 31
1980April 22
1979May 2
1978April 24
1977April 14
1976April 12
1974April 21
1971April 19
1970April 27
1969April 20
1966April 17

When Mary freezes over

Mary Lake usually freezes over around November 27 — the fourth week of November. Earliest on record: November 12 (1966–67). Latest: December 19 (2001–02).

November 27Usually freezes around
November 12 Earliest on record (1966–67)
December 19 Latest on record (2001–02)
23 Winters of record (1966–2018)

A freeze-up crosses New Year, so each row is the winter it belongs to: the winter of 2017–18 froze on December 2. Newest first.

WinterIce-in date
2017–18December 2
2015–16December 18
2010–11November 25
2009–10December 6
2008–09November 21
2007–08November 27
2006–07November 30
2005–06November 29
2004–05December 13
2003–04November 24
2002–03November 25
2001–02December 19
2000–01November 21
1999–00December 16
1998–99November 27
1997–98November 16
1996–97November 19
1995–96November 12
1994–95November 29
1993–94November 24
1980–81December 2
1977–78November 21
1966–67November 12

Records: Minnesota DNR ice-in records. Last checked August 2026.

Late ice is unpredictable — no date on this page says the ice is safe.

Records: Minnesota DNR ice-out records. Last checked August 2026.

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