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Built 2026-10-19 (19 October 2026)

Glacier Bay Threshold Days by Year (USC00503294)

10 fixed thresholds counted per year at Glacier Bay (USC00503294): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glacier Bay Thresholds

  • Glacier Bay: days with 10 cm (3.9 in) or more of snowfall in 32 years, most in 1990 with 26.
  • Glacier Bay: days with a maximum temperature at or below 0 C (32 F) in 27 years, most in 1972 with 73.
  • Glacier Bay: nights with a minimum temperature at or below 0 C (32 F) in 26 years, most in 1972 with 178.
  • Glacier Bay: nights with a minimum temperature at or below -10 C (14 F) in 26 years, most in 1972 with 33.
  • 10 fixed thresholds have at least one qualifying day at Glacier Bay.
26 years with a qualifying day
Nights at or below 0 C (32 F) per year at Glacier Bay Days per year at Glacier Bay with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 178 in 1972. 0501001502001966: 1631968: 1301969: 1361970: 1301971: 1701972: 1781974: 1131977: 991979: 1401980: 1141981: 1041982: 1571983: 1271984: 1241989: 1501990: 1681991: 1542005: 1042006: 1612007: 1652008: 1742012: 1712016: 722019: 1202025: 952026: 78196619701974198019831990200620122025
Days per year at Glacier Bay with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 178 in 1972.
Nights at or below 0 C (32 F) per year at Glacier Bay
YearDaysDecade average
1966163143
1968130143
1969136143
1970130138.3
1971170138.3
1972178138.3
1974113138.3
197799138.3
1979140138.3
1980114129.3
1981104129.3
1982157129.3
1983127129.3
1984124129.3
1989150129.3
1990168161
1991154161
2005104151
2006161151
2007165151
2008174151
2012171121
201672121
2019120121
20259586.5
20267886.5
First to last qualifying date each year at Glacier Bay For each year, a bar from the first to the last day at Glacier Bay meeting 0 C (32 F). 1966: 1 January 1966 to 31 December 19661968: 1 January 1968 to 31 December 19681969: 1 January 1969 to 27 December 19691970: 2 January 1970 to 31 December 19701971: 1 January 1971 to 31 December 19711972: 1 January 1972 to 29 December 19721974: 1 January 1974 to 31 December 19741977: 1 January 1977 to 31 December 19771979: 1 January 1979 to 31 December 19791980: 1 January 1980 to 31 December 19801981: 1 January 1981 to 31 December 19811982: 1 January 1982 to 31 December 19821983: 5 January 1983 to 31 December 19831984: 3 January 1984 to 31 December 19841989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19912005: 1 January 2005 to 27 December 20052006: 1 January 2006 to 31 December 20062007: 2 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082012: 1 January 2012 to 31 December 20122016: 2 January 2016 to 31 December 20162019: 3 January 2019 to 28 December 20192025: 1 January 2025 to 31 December 20252026: 1 January 2026 to 26 April 20261966197119791983199120082025JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Glacier Bay meeting 0 C (32 F).
First to last qualifying date each year at Glacier Bay
YearFirst dateLast date
19661966-01-011966-12-31
19681968-01-011968-12-31
19691969-01-011969-12-27
19701970-01-021970-12-31
19711971-01-011971-12-31
19721972-01-011972-12-29
19741974-01-011974-12-31
19771977-01-011977-12-31
19791979-01-011979-12-31
19801980-01-011980-12-31
19811981-01-011981-12-31
19821982-01-011982-12-31
19831983-01-051983-12-31
19841984-01-031984-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
20052005-01-012005-12-27
20062006-01-012006-12-31
20072007-01-022007-12-31
20082008-01-012008-12-31
20122012-01-012012-12-31
20162016-01-022016-12-31
20192019-01-032019-12-28
20252025-01-012025-12-31
20262026-01-012026-04-26

Every Fixed Threshold

Fixed thresholds at Glacier Bay
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
0 C (32 F): Ice days (max2773197235
0 C (32 F): Frost days (min26178197278
-10 C (14 F): Days with min263319725
-20 C (-4 F): Days with min4219682
10 mm (0.39 in): Days with 10 mm or more rain2470197214
25 mm (0.98 in): Days with 25 mm or more rain242019722
50 mm (1.97 in): Days with 50 mm or more rain16319782
10 cm (3.9 in): Days with 10 cm or more snowfall3226199013
25 cm (9.8 in): Days with 25 cm or more snowfall21420081
50 cm (19.7 in): Days with 50 cm or more snowfall4119711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

  • Data for Glacier Bay 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 (2026-10-17).