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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Port Alexander Threshold Days by Year (USC00507557)

11 fixed thresholds counted per year at Port Alexander (USC00507557): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Port Alexander Thresholds

  • Port Alexander: days with 10 cm (3.9 in) or more of snowfall in 41 years, most in 1956 with 22.
  • Port Alexander: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 2008 with 154.
  • Port Alexander: days with 25 mm (0.98 in) or more of precipitation in 39 years, most in 1956 with 76.
  • Port Alexander: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1960 with 22.
  • 11 fixed thresholds have at least one qualifying day at Port Alexander.
38 years with a qualifying day
Nights at or below 0 C (32 F) per year at Port Alexander Days per year at Port Alexander with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 114 in 1950. 0501001501950: 1141951: 1111952: 711953: 651954: 1071955: 881956: 1051957: 821958: 451959: 781960: 481961: 661962: 871980: 681981: 341982: 971983: 511984: 561985: 811986: 581987: 521989: 791990: 1041992: 541993: 611994: 791995: 911996: 1121997: 542003: 542004: 522006: 892007: 662008: 742009: 782010: 422011: 702012: 731950195419581962198319871993199720072011
Days per year at Port Alexander with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 114 in 1950.
Nights at or below 0 C (32 F) per year at Port Alexander
YearDaysDecade average
195011486.6
195111186.6
19527186.6
19536586.6
195410786.6
19558886.6
195610586.6
19578286.6
19584586.6
19597886.6
19604867
19616667
19628767
19806864
19813464
19829764
19835164
19845664
19858164
19865864
19875264
19897964
199010479.3
19925479.3
19936179.3
19947979.3
19959179.3
199611279.3
19975479.3
20035468.8
20045268.8
20068968.8
20076668.8
20087468.8
20097868.8
20104261.7
20117061.7
20127361.7
First to last qualifying date each year at Port Alexander For each year, a bar from the first to the last day at Port Alexander meeting 0 C (32 F). 1950: 1 January 1950 to 22 December 19501951: 1 January 1951 to 31 December 19511952: 3 January 1952 to 16 December 19521953: 6 January 1953 to 13 December 19531954: 3 January 1954 to 31 December 19541955: 1 January 1955 to 31 December 19551956: 1 January 1956 to 23 December 19561957: 7 January 1957 to 31 December 19571958: 1 January 1958 to 31 December 19581959: 1 January 1959 to 31 December 19591960: 2 January 1960 to 31 December 19601961: 6 January 1961 to 30 December 19611962: 8 January 1962 to 31 December 19621980: 4 January 1980 to 29 December 19801981: 29 January 1981 to 30 December 19811982: 1 January 1982 to 26 December 19821983: 8 January 1983 to 31 December 19831984: 5 January 1984 to 31 December 19841985: 1 January 1985 to 11 December 19851986: 1 January 1986 to 23 December 19861987: 3 January 1987 to 31 December 19871989: 1 January 1989 to 21 December 19891990: 1 January 1990 to 31 December 19901992: 24 January 1992 to 31 December 19921993: 1 January 1993 to 13 December 19931994: 5 January 1994 to 28 December 19941995: 3 January 1995 to 31 December 19951996: 1 January 1996 to 31 December 19961997: 1 January 1997 to 31 December 19972003: 8 January 2003 to 29 December 20032004: 2 January 2004 to 31 December 20042006: 14 January 2006 to 27 December 20062007: 4 January 2007 to 28 December 20072008: 4 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 30 December 20102011: 10 January 2011 to 31 December 20112012: 1 January 2012 to 27 December 201219501955196019821987199420042010JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Port Alexander meeting 0 C (32 F).
First to last qualifying date each year at Port Alexander
YearFirst dateLast date
19501950-01-011950-12-22
19511951-01-011951-12-31
19521952-01-031952-12-16
19531953-01-061953-12-13
19541954-01-031954-12-31
19551955-01-011955-12-31
19561956-01-011956-12-23
19571957-01-071957-12-31
19581958-01-011958-12-31
19591959-01-011959-12-31
19601960-01-021960-12-31
19611961-01-061961-12-30
19621962-01-081962-12-31
19801980-01-041980-12-29
19811981-01-291981-12-30
19821982-01-011982-12-26
19831983-01-081983-12-31
19841984-01-051984-12-31
19851985-01-011985-12-11
19861986-01-011986-12-23
19871987-01-031987-12-31
19891989-01-011989-12-21
19901990-01-011990-12-31
19921992-01-241992-12-31
19931993-01-011993-12-13
19941994-01-051994-12-28
19951995-01-031995-12-31
19961996-01-011996-12-31
19971997-01-011997-12-31
20032003-01-082003-12-29
20042004-01-022004-12-31
20062006-01-142006-12-27
20072007-01-042007-12-28
20082008-01-042008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-30
20112011-01-102011-12-31
20122012-01-012012-12-27

Every Fixed Threshold

Fixed thresholds at Port Alexander
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days1120041
0 C (32 F): Ice days (max3846195015
0 C (32 F): Frost days (min38114195073
-10 C (14 F): Days with min261019963
10 mm (0.39 in): Days with 10 mm or more rain391542008126
25 mm (0.98 in): Days with 25 mm or more rain3976195647
50 mm (1.97 in): Days with 50 mm or more rain392219608
100 mm (3.94 in): Days with 100 mm or more rain33519611
10 cm (3.9 in): Days with 10 cm or more snowfall412219568
25 cm (9.8 in): Days with 25 cm or more snowfall18419511
50 cm (19.7 in): Days with 50 cm or more snowfall2119521

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2004.

Download the Data

  • Data for Port Alexander threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).