Mountain pass closure and opening dates
Historic opening and closing dates for Chinook, Cayuse and North Cascades passes
- Chinook Pass SR 410
-
Year
Opened
Closed
2023 May 26 2022 2021
May 28
Nov 9
2020
June 4
Nov 12
2019
May 23
reopened -- Oct. 25Oct. 19 - temporary
Nov. 212018
June 11
Nov. 20
2017
June 9
Nov. 7
2016
May 17
Nov. 29
2015
April 2
Nov. 16
2014
May 23
Nov. 24
2013
May 17
Dec. 2
2012
May 25
Nov. 12
2011
June 23
Nov. 11
2010
May 28
Nov. 16
2009
May 22
Nov. 8
2008
June 5
Dec. 15
2007
May 24
Nov. 29
2006
May 25
Nov. 12
2005
Apr. 28
Oct. 25
2004
May 6
Dec. 7
2003
May 14
Nov. 17
2002
May 31
Dec. 10
2001
May 10
Nov. 26
2000
May 18
Nov. 27
1999
Jul. 1
Nov. 30
1998
May 20
Nov. 20
1997
Jun. 12
Nov. 19
1996
May 23
Nov. 16
1995
Jun. 7
Nov. 7
1994
May 27 *
Oct. 31
1993
May 28 *
Nov. 18 **
1992
May 8
Nov. 21
1991
May 24
Nov. 19
1990
May 17
Nov. 21
1989
May 26
Nov. 28
1988
May 12
Nov. 10
1987
May 13
Nov. 23
1986
May 22
Nov. 18
1985
May 22
Nov. 9
1984
May 24
Nov. 5
1983
May 25
Nov. 14
1982
Jun. 10
Nov. 16
1981
Apr. 29
Nov. 20
1980
May 21
Nov. 17
1979
May 25
Nov. 24
1978
May 25
Nov. 18
1977
N/A
Nov. 15
1976
Jun. 11
None
1975
Jun. 13
Oct. 28
1974
Jul. 12
Dec. 18
1973
Apr. 5
Nov. 9
1972
Jun. 23
Nov. 9
1971
Jun. 18
Nov. 1
1970
May 29
Nov. 11
1969
May 27
Dec. 10
1968
May 10
Nov. 22
1967
Jun. 3
Nov. 28
1966
May 26
Nov. 16
1965
May 28
Nov. 24
1964
Jun. 20
Nov. 22
1963
May 28
Nov. 7
1962
May 20
Nov. 25
1961
Jun. 6
Nov. 11
1960
May 25
Nov. 15
1959
May 22
Nov. 19
1958
May 24
Nov. 9
1957
May 10
Nov. 27
1956
Jun. 13
Nov. 16
1955
Jun. 6
Nov. 17
1954
Jun. 19
Dec. 5
1953
May 30
Nov. 21
1952
May 16
Dec. 4
1951
May 19
Nov. 11
1950
Jun. 7
Nov. 15
1949
May 27
Dec. 9
1948
Jun. 12
Nov. 3
1947
May 15
Nov. 5
1946
Jun. 27
Nov. 1
1945
Jun. 2
Nov. 9
1944
May 20
Nov. 23
1943
Jun. 18
Nov. 4
1942
May 3
Nov. 3
1941
Apr. 15
Dec. 15
1940
May 15
Nov. 8
1939
May 7
Dec. 15
1938
May 28
Nov. 16
1937
Jun. 1
Nov. 12
1936
May 23
Dec. 8
1935
May 21
Nov. 15
* Due to Construction
** SR 410 North of Chinook Pass Closed 11/1/93 Due to Construction
*** Temporary Closure Date
- Cayuse Pass SR 123
-
Year
Opened
Closed
2023 May 26 2022 2021
May 28
Nov 9
2020
June 4
Nov. 12
2019
May 23 - reopened - Oct. 20
Oct. 19 - temporary
Nov. 212018
June 11
Nov. 20
2017
May 19
Nov. 7
2016
April 29
Nov. 29
2015
April 2
Nov. 16
2014
May 16
Nov. 24
2013
May 3
Nov. 20
2012
May 8
Nov. 12
2011
May 26
Nov. 11
2010
April 30
Nov. 16
2009
May 15
Nov. 8
2008
May 23
Dec. 15
2007
Sept. 29 #
Nov. 29
2006
Jun. 30
Nov. 12
2005
Apr. 21
Nov. 4
2004
Apr. 30
Dec. 6
2003
Apr. 18
Nov. 18
2002
May 6
Dec. 12
2001
Apr. 20
Nov. 26
2000
Apr. 20
Nov. 28
1999
Jun. 3
Nov. 30
1998
Apr. 25
Nov. 23
1997
May 23
Nov. 20
1996
Jun. 21#
Oct. 7##
1995
May 24
Dec. 4
1994
May 23 *
Oct. 31
1993
May 28 *
Nov. 18
1992
Mar. 30
Nov. 30
1991
May 3
Dec. 7
1990
May 17
Nov. 24
1989
May 1
Jan. 4, 1990
1988
Apr. 15
Nov. 17
1987
Apr. 3
Nov. 30
1986
Apr. 10
Nov. 28
1985
Apr. 19
Nov. 17
1984
Apr. 6
Nov. 16
1983
Apr. 7
Nov. 24
1982
Apr. 30
Dec. 2
1981
Mar. 18
Nov. 30
1980
Apr. 21
Dec. 4
1979
Apr. 23
Jan. 8, 1980
1978
Apr. 3
Dec. 10
1977
N/A
Dec. 2
1976
May 14
None
1975
Apr. 29
Nov. 30
1974
May 29
Dec. 30
1973
Not available
Dec. 12
* Due to Construction
*** Temporary Closure Date
# Due to Winter Storm Damage
## For Repair of Winter Storm Damage
- North Cascades SR 20
-
Year
Opened
Closed
2023
May 11
2022
May 10
Nov. 3
2021
May 5
Nov 15
2020
May 12
Nov. 16
2019
April 18
Dec. 11
2018
May 11
Nov. 28
2017
May 16
Nov. 10
2016
April 22
Nov. 18
2015
April 3
Nov. 12
2014
May 8
Nov. 24
2013
April 16
Dec. 3
2012
May 10
Nov. 20
2011
May 25
Nov. 21
2010
April 16
Dec. 1
2009
April 24
Nov. 17
2008
May 1
Dec. 15
2007
April 26
Dec. 4
2006
May 1
Nov. 13
2005
Mar. 10
Nov. 3
2004
Apr. 8
Dec. 13
2003
Apr. 14
Oct 17
2002
May 7
Dec. 17
2001
Mar. 22
Nov. 19
2000
Mar. 30
Nov. 28
1999
May 5
Dec. 6
1998
Apr. 2
Nov. 20
1997
May 7
Dec. 16
1996
Apr. 24
Nov. 19
1995
Apr. 28
Nov. 5
1994
Apr. 7
Oct. 31
1993
Mar. 24
Dec. 8
1992
Apr. 9
Dec. 8
1991
May 2
Nov. 17
1990
Apr. 18
Nov. 12
1989
Apr. 21
Jan. 3, 1990
1988
Apr. 20
Nov. 19
1987
Apr. 15
Dec. 1
1986
Apr. 11
Nov. 26
1985
Apr. 12
Nov. 15
1984
Apr. 4
Nov. 2
1983
Apr. 20
Nov. 24
1982
May 6
Dec. 2
1981
Apr. 24
Nov. 30
1980
Apr. 18
Nov. 27
1979
Apr. 10
Dec. 15
1978
Apr. 21
Dec. 11
1977
N/A
Nov. 23
1976
May 21
None
1975
May 16
Nov. 24
1974
Jun. 14
Nov. 21
1973
Apr. 27
Nov. 21
1972
Sept. 2
Nov. 26
* Due to Construction
*** Temporary Closure Date
# Due to Winter Storm Damage
## For Repair of Winter Storm Damage
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