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Built 2026-10-16 (16 October 2026)

Biorka Weather Records (USC00500804)

Record envelope, standing records and threshold days for Biorka (USC00500804), Alaska, United States, with 39 years of record.

Key Facts for Biorka

  • Biorka (USC00500804) is a weather station in Alaska, United States at 56.85 latitude and -135.55 longitude, 15 m (49 ft) above sea level.
  • The station reports from 1941 to 1979, 39 years of record.
  • 1,464 records set at Biorka still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Alaska, United States, 56.85 latitude, -135.55 longitude.
  • Elevation: 15 m (49 ft).
  • Period of record: 1941 to 1979, 39 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Biorka, with 2026 drawn through them The band shows the record high and record low for each calendar day at Biorka. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -20-100102030 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Biorka. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Biorka, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.8 C (55.0 F)-18.9 C (-2.0 F)n/an/a
Feb14.4 C (57.9 F)-17.8 C (0.0 F)n/an/a
Mar13.9 C (57.0 F)-7.8 C (18.0 F)n/an/a
Apr21.7 C (71.1 F)-7.2 C (19.0 F)n/an/a
May26.7 C (80.1 F)-5.0 C (23.0 F)n/an/a
Jun23.3 C (73.9 F)1.1 C (34.0 F)n/an/a
Jul25.6 C (78.1 F)0.6 C (33.1 F)n/an/a
Aug24.4 C (75.9 F)3.9 C (39.0 F)n/an/a
Sep23.9 C (75.0 F)0.6 C (33.1 F)n/an/a
Oct20.6 C (69.1 F)-5.6 C (21.9 F)n/an/a
Nov14.4 C (57.9 F)-8.3 C (17.1 F)n/an/a
Dec18.3 C (64.9 F)-16.1 C (3.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Biorka by the year they were set 1,464 records at Biorka still stand. 1975 holds the most, with 180. 0501001502001941: 1431942: 1511943: 1581944: 1391972: 301973: 1491974: 931975: 1801976: 671977: 991978: 1251979: 130194119431972197419761978
1,464 records at Biorka still stand. 1975 holds the most, with 180.
Standing records at Biorka by the year they were set
Year setStanding records
1941143
1942151
1943158
1944139
197230
1973149
197493
1975180
197667
197799
1978125
1979130

Wettest Day of Each Month

Oct: 101.6 mm (4.0 in)
Record daily precipitation for each month at Biorka The wettest day on record for each calendar month at Biorka. The most was 101.6 mm (4.0 in) on 6 October 1978. 050100150 Jan: 71.1 mm (2.8 in), 19 January 1976 Jan Feb: 53.6 mm (2.1 in), 19 February 1943 Feb Mar: 41.1 mm (1.6 in), 9 March 1979 Mar Apr: 62.0 mm (2.4 in), 11 April 1943 Apr May: 68.6 mm (2.7 in), 27 May 1978 May Jun: 59.4 mm (2.3 in), 25 June 1974 Jun Jul: 67.6 mm (2.7 in), 17 July 1979 Jul Aug: 55.1 mm (2.2 in), 16 August 1942 Aug Sep: 64.3 mm (2.5 in), 2 September 1943 Sep Oct: 101.6 mm (4.0 in), 6 October 1978 Oct Nov: 63.5 mm (2.5 in), 14 November 1979 Nov Dec: 68.6 mm (2.7 in), 7 December 1974 Dec
The wettest day on record for each calendar month at Biorka. The most was 101.6 mm (4.0 in) on 6 October 1978.
Record daily precipitation for each month at Biorka
MonthRecord daily precipitation (mm)Date
Jan71.1 mm (2.8 in)19 January 1976
Feb53.6 mm (2.1 in)19 February 1943
Mar41.1 mm (1.6 in)9 March 1979
Apr62.0 mm (2.4 in)11 April 1943
May68.6 mm (2.7 in)27 May 1978
Jun59.4 mm (2.3 in)25 June 1974
Jul67.6 mm (2.7 in)17 July 1979
Aug55.1 mm (2.2 in)16 August 1942
Sep64.3 mm (2.5 in)2 September 1943
Oct101.6 mm (4.0 in)6 October 1978
Nov63.5 mm (2.5 in)14 November 1979
Dec68.6 mm (2.7 in)7 December 1974

Period of Record Coverage

1941 to 1979
Days with data per year at Biorka 12 years of record at Biorka, 1941 to 1979. 10 years have data for under 90 percent of days and are left out of rankings: 1941, 1942, 1972, 1973, 1974, 1975, 1976, 1977 and others. 1941: 306 of 365 days1942: 297 of 365 days1943: 363 of 365 days1944: 330 of 366 days1972: 92 of 366 days1973: 326 of 365 days1974: 216 of 365 days1975: 304 of 365 days1976: 208 of 366 days1977: 306 of 365 days1978: 251 of 365 days1979: 325 of 365 days1975
12 years of record at Biorka, 1941 to 1979. 10 years have data for under 90 percent of days and are left out of rankings: 1941, 1942, 1972, 1973, 1974, 1975, 1976, 1977 and others.
Days with data per year at Biorka
YearDays with dataShare of yearComplete
194130684%No
194229781%No
194336399%Yes
194433090%Yes
19729225%No
197332689%No
197421659%No
197530483%No
197620857%No
197730684%No
197825169%No
197932589%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1941 to 1979
Yearly extremes at Biorka: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)26.7 C (80.1 F)194223.3 C (73.9 F)12
Coldest night (TNn)-18.9 C (-2.0 F)1975-12.5 C (9.5 F)12
Wettest day (Rx1day)101.6 mm (4.0 in)197864.3 mm (2.5 in)12
Wettest five days (Rx5day)221.5 mm (8.7 in)1978142.4 mm (5.6 in)12
Longest dry spell (CDD)16 days194312 days12

Hottest day (TXx)

Hottest day (TXx) at Biorka by year The hottest day of the year at Biorka, 1941 to 1979. The record is 26.7 C (80.1 F) in 1942, marked on the chart; the median year is 23.3 C (73.9 F). 15202530195019601970Record: 26.7 C (80.1 F) in 1942
The hottest day of the year at Biorka, 1941 to 1979. The record is 26.7 C (80.1 F) in 1942, marked on the chart; the median year is 23.3 C (73.9 F).
Hottest day (TXx) at Biorka by year
YearHottest day (TXx)
194123.9 C (75.0 F)
194226.7 C (80.1 F)
194325.6 C (78.1 F)
194423.9 C (75.0 F)
197215.6 C (60.1 F)
197323.3 C (73.9 F)
197423.3 C (73.9 F)
197523.9 C (75.0 F)
197621.7 C (71.1 F)
197720.0 C (68.0 F)
197821.7 C (71.1 F)
197922.2 C (72.0 F)

Coldest night (TNn)

Coldest night (TNn) at Biorka by year The coldest night of the year at Biorka, 1941 to 1979. The record is -18.9 C (-2.0 F) in 1975, marked on the chart; the median year is -12.5 C (9.5 F). -20-15-10-50195019601970Record: -18.9 C (-2.0 F) in 1975
The coldest night of the year at Biorka, 1941 to 1979. The record is -18.9 C (-2.0 F) in 1975, marked on the chart; the median year is -12.5 C (9.5 F).
Coldest night (TNn) at Biorka by year
YearColdest night (TNn)
1941-6.1 C (21.0 F)
1942-8.9 C (16.0 F)
1943-13.3 C (8.1 F)
1944-11.7 C (10.9 F)
1972-6.1 C (21.0 F)
1973-13.3 C (8.1 F)
1974-4.4 C (24.1 F)
1975-18.9 C (-2.0 F)
1976-10.0 C (14.0 F)
1977-16.1 C (3.0 F)
1978-14.4 C (6.1 F)
1979-13.3 C (8.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Biorka by year The wettest day of the year at Biorka, 1941 to 1979. The record is 101.6 mm (4.0 in) in 1978, marked on the chart; the median year is 64.3 mm (2.5 in). 406080100120195019601970Record: 101.6 mm (4.0 in) in 1978
The wettest day of the year at Biorka, 1941 to 1979. The record is 101.6 mm (4.0 in) in 1978, marked on the chart; the median year is 64.3 mm (2.5 in).
Wettest day (Rx1day) at Biorka by year
YearWettest day (Rx1day)
194164.3 mm (2.5 in)
194263.2 mm (2.5 in)
194364.3 mm (2.5 in)
194448.8 mm (1.9 in)
197298.0 mm (3.9 in)
197344.7 mm (1.8 in)
197468.6 mm (2.7 in)
197552.1 mm (2.1 in)
197671.1 mm (2.8 in)
197751.1 mm (2.0 in)
1978101.6 mm (4.0 in)
197969.3 mm (2.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Biorka by year The wettest five days of the year at Biorka, 1941 to 1979. The record is 221.5 mm (8.7 in) in 1978, marked on the chart; the median year is 142.4 mm (5.6 in). 100150200250195019601970Record: 221.5 mm (8.7 in) in 1978
The wettest five days of the year at Biorka, 1941 to 1979. The record is 221.5 mm (8.7 in) in 1978, marked on the chart; the median year is 142.4 mm (5.6 in).
Wettest five days (Rx5day) at Biorka by year
YearWettest five days (Rx5day)
1941143.0 mm (5.6 in)
1942134.5 mm (5.3 in)
1943169.4 mm (6.7 in)
1944104.8 mm (4.1 in)
1972154.9 mm (6.1 in)
1973114.1 mm (4.5 in)
1974195.5 mm (7.7 in)
1975139.7 mm (5.5 in)
1976172.4 mm (6.8 in)
1977140.3 mm (5.5 in)
1978221.5 mm (8.7 in)
1979141.7 mm (5.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Biorka by year The longest dry spell of the year at Biorka, 1941 to 1979. The record is 16 days in 1943, marked on the chart; the median year is 12 days. 810121416195019601970Record: 16 days in 1943
The longest dry spell of the year at Biorka, 1941 to 1979. The record is 16 days in 1943, marked on the chart; the median year is 12 days.
Longest dry spell (CDD) at Biorka by year
YearLongest dry spell (CDD)
194115 days
194210 days
194316 days
194411 days
19728 days
197312 days
197412 days
197515 days
197614 days
197711 days
197810 days
197916 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Download the Data

  • Data for Biorka standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Biorka 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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