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Built 2026-10-19 (19 October 2026)

Kuparuk Threshold Days by Year

10 fixed thresholds counted per year at Kuparuk (USC00505136): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kuparuk Thresholds

  • Kuparuk: days with a maximum temperature at or below 0 C (32 F) in 41 years, most in 1987 with 252.
  • Kuparuk: nights with a minimum temperature at or below 0 C (32 F) in 41 years, most in 1985 with 322.
  • Kuparuk: nights with a minimum temperature at or below -10 C (14 F) in 41 years, most in 2001 with 230.
  • Kuparuk: nights with a minimum temperature at or below -20 C (-4 F) in 41 years, most in 1984 with 171.
  • 10 fixed thresholds have at least one qualifying day at Kuparuk.
41 years with a qualifying day
Nights at or below 0 C (32 F) per year at Kuparuk Days per year at Kuparuk with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 322 in 1985. 01002003004001984: 2911985: 3221986: 2931987: 2981988: 3061989: 2751990: 2931991: 3181992: 2961993: 2901994: 2611995: 2771996: 2921997: 2591998: 2561999: 2952000: 3012001: 2992002: 2922003: 2932004: 2782005: 2992006: 2712007: 2712008: 2652009: 2672010: 2722012: 2602014: 2962015: 2882016: 2832017: 2792018: 3082019: 2712020: 2852021: 2842022: 2782023: 2632024: 2752025: 2832026: 179198419891994199920042009201620212026
Days per year at Kuparuk with nights with a minimum temperature at or below 0 C (32 F), with the decade average as a line. The most was 322 in 1985.
Nights at or below 0 C (32 F) per year at Kuparuk
YearDaysDecade average
1984291297.5
1985322297.5
1986293297.5
1987298297.5
1988306297.5
1989275297.5
1990293283.7
1991318283.7
1992296283.7
1993290283.7
1994261283.7
1995277283.7
1996292283.7
1997259283.7
1998256283.7
1999295283.7
2000301283.6
2001299283.6
2002292283.6
2003293283.6
2004278283.6
2005299283.6
2006271283.6
2007271283.6
2008265283.6
2009267283.6
2010272282.1
2012260282.1
2014296282.1
2015288282.1
2016283282.1
2017279282.1
2018308282.1
2019271282.1
2020285263.9
2021284263.9
2022278263.9
2023263263.9
2024275263.9
2025283263.9
2026179263.9
First to last qualifying date each year at Kuparuk For each year, a bar from the first to the last day at Kuparuk meeting 0 C (32 F). 1984: 1 January 1984 to 31 December 19841985: 1 January 1985 to 31 December 19851986: 1 January 1986 to 31 December 19861987: 1 January 1987 to 31 December 19871988: 1 January 1988 to 31 December 19881989: 1 January 1989 to 31 December 19891990: 1 January 1990 to 31 December 19901991: 1 January 1991 to 31 December 19911992: 1 January 1992 to 31 December 19921993: 1 January 1993 to 31 December 19931994: 1 February 1994 to 31 December 19941995: 1 January 1995 to 31 December 19951996: 1 January 1996 to 31 December 19961997: 1 January 1997 to 31 December 19971998: 1 January 1998 to 31 December 19981999: 1 January 1999 to 31 December 19992000: 1 January 2000 to 31 December 20002001: 1 January 2001 to 31 December 20012002: 1 January 2002 to 31 December 20022003: 1 January 2003 to 31 December 20032004: 1 January 2004 to 31 December 20042005: 1 January 2005 to 31 December 20052006: 1 January 2006 to 31 December 20062007: 1 January 2007 to 31 December 20072008: 1 January 2008 to 31 December 20082009: 1 January 2009 to 31 December 20092010: 1 January 2010 to 31 December 20102012: 1 January 2012 to 31 December 20122014: 1 January 2014 to 31 December 20142015: 1 January 2015 to 31 December 20152016: 1 January 2016 to 31 December 20162017: 1 January 2017 to 31 December 20172018: 1 January 2018 to 31 December 20182019: 1 January 2019 to 31 December 20192020: 1 January 2020 to 31 December 20202021: 1 January 2021 to 31 December 20212022: 1 January 2022 to 31 December 20222023: 1 January 2023 to 31 December 20232024: 1 January 2024 to 31 December 20242025: 1 January 2025 to 31 December 20252026: 1 January 2026 to 30 August 20261984199019962002200820162022JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Kuparuk meeting 0 C (32 F).
First to last qualifying date each year at Kuparuk
YearFirst dateLast date
19841984-01-011984-12-31
19851985-01-011985-12-31
19861986-01-011986-12-31
19871987-01-011987-12-31
19881988-01-011988-12-31
19891989-01-011989-12-31
19901990-01-011990-12-31
19911991-01-011991-12-31
19921992-01-011992-12-31
19931993-01-011993-12-31
19941994-02-011994-12-31
19951995-01-011995-12-31
19961996-01-011996-12-31
19971997-01-011997-12-31
19981998-01-011998-12-31
19991999-01-011999-12-31
20002000-01-012000-12-31
20012001-01-012001-12-31
20022002-01-012002-12-31
20032003-01-012003-12-31
20042004-01-012004-12-31
20052005-01-012005-12-31
20062006-01-012006-12-31
20072007-01-012007-12-31
20082008-01-012008-12-31
20092009-01-012009-12-31
20102010-01-012010-12-31
20122012-01-012012-12-31
20142014-01-012014-12-31
20152015-01-012015-12-31
20162016-01-012016-12-31
20172017-01-012017-12-31
20182018-01-012018-12-31
20192019-01-012019-12-31
20202020-01-012020-12-31
20212021-01-012021-12-31
20222022-01-012022-12-31
20232023-01-012023-12-31
20242024-01-012024-12-31
20252025-01-012025-12-31
20262026-01-012026-08-30

Every Fixed Threshold

Fixed thresholds at Kuparuk
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2120161
0 C (32 F): Ice days (max412521987154
0 C (32 F): Frost days (min413221985179
-10 C (14 F): Days with min412302001127
-20 C (-4 F): Days with min41171198499
-30 C (-22 F): Days with min41112199056
-40 C (-40 F): Days with min3633198412
10 mm (0.39 in): Days with 10 mm or more rain31620021
25 mm (0.98 in): Days with 25 mm or more rain1119941
10 cm (3.9 in): Days with 10 cm or more snowfall13320072

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2016.

Download the Data

  • Data for Kuparuk 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).