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Built 2026-10-16 (16 October 2026)

Amchitka Weather Records (USC00500252)

Record envelope, standing records and threshold days for Amchitka (USC00500252), Alaska, United States, with 51 years of record.

Key Facts for Amchitka

  • Amchitka (USC00500252) is a weather station in Alaska, United States at 51.38 latitude and 179.28 longitude, 68 m (223 ft) above sea level.
  • The station reports from 1943 to 1993, 51 years of record.
  • 1,464 records set at Amchitka 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, 51.38 latitude, 179.28 longitude.
  • Elevation: 68 m (223 ft).
  • Period of record: 1943 to 1993, 51 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Amchitka, with 2026 drawn through them The band shows the record high and record low for each calendar day at Amchitka. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -1001020 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Amchitka. 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 Amchitka, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan6.7 C (44.1 F)-8.9 C (16.0 F)n/an/a
Feb7.2 C (45.0 F)-9.4 C (15.1 F)n/an/a
Mar8.9 C (48.0 F)-6.7 C (19.9 F)n/an/a
Apr7.8 C (46.0 F)-6.7 C (19.9 F)n/an/a
May9.4 C (48.9 F)-2.2 C (28.0 F)n/an/a
Jun13.3 C (55.9 F)0.6 C (33.1 F)n/an/a
Jul18.3 C (64.9 F)1.7 C (35.1 F)n/an/a
Aug15.6 C (60.1 F)2.8 C (37.0 F)n/an/a
Sep13.9 C (57.0 F)2.2 C (36.0 F)n/an/a
Oct11.1 C (52.0 F)-1.7 C (28.9 F)n/an/a
Nov10.0 C (50.0 F)-5.0 C (23.0 F)n/an/a
Dec7.2 C (45.0 F)-8.3 C (17.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Amchitka by the year they were set 1,464 records at Amchitka still stand. 1943 holds the most, with 183. 0501001502001943: 1831944: 1441945: 1191946: 1401947: 1171948: 1191949: 931950: 541979: 321980: 871988: 901989: 181990: 971991: 551992: 631993: 5319431945194719491979198819901992
1,464 records at Amchitka still stand. 1943 holds the most, with 183.
Standing records at Amchitka by the year they were set
Year setStanding records
1943183
1944144
1945119
1946140
1947117
1948119
194993
195054
197932
198087
198890
198918
199097
199155
199263
199353

Wettest Day of Each Month

Jul: 54.6 mm (2.1 in)
Record daily precipitation for each month at Amchitka The wettest day on record for each calendar month at Amchitka. The most was 54.6 mm (2.1 in) on 17 July 1990. 0204060 Jan: 25.4 mm (1.0 in), 11 January 1992 Jan Feb: 25.4 mm (1.0 in), 7 February 1980 Feb Mar: 24.6 mm (1.0 in), 24 March 1945 Mar Apr: 50.3 mm (2.0 in), 15 April 1946 Apr May: 42.2 mm (1.7 in), 14 May 1950 May Jun: 25.9 mm (1.0 in), 3 June 1988 Jun Jul: 54.6 mm (2.1 in), 17 July 1990 Jul Aug: 33.8 mm (1.3 in), 22 August 1991 Aug Sep: 42.7 mm (1.7 in), 4 September 1992 Sep Oct: 31.5 mm (1.2 in), 7 October 1944 Oct Nov: 29.0 mm (1.1 in), 3 November 1992 Nov Dec: 33.0 mm (1.3 in), 18 December 1947 Dec
The wettest day on record for each calendar month at Amchitka. The most was 54.6 mm (2.1 in) on 17 July 1990.
Record daily precipitation for each month at Amchitka
MonthRecord daily precipitation (mm)Date
Jan25.4 mm (1.0 in)11 January 1992
Feb25.4 mm (1.0 in)7 February 1980
Mar24.6 mm (1.0 in)24 March 1945
Apr50.3 mm (2.0 in)15 April 1946
May42.2 mm (1.7 in)14 May 1950
Jun25.9 mm (1.0 in)3 June 1988
Jul54.6 mm (2.1 in)17 July 1990
Aug33.8 mm (1.3 in)22 August 1991
Sep42.7 mm (1.7 in)4 September 1992
Oct31.5 mm (1.2 in)7 October 1944
Nov29.0 mm (1.1 in)3 November 1992
Dec33.0 mm (1.3 in)18 December 1947

Period of Record Coverage

1943 to 1993
Days with data per year at Amchitka 16 years of record at Amchitka, 1943 to 1993. 8 years have data for under 90 percent of days and are left out of rankings: 1950, 1979, 1980, 1988, 1989, 1991, 1992, 1993. 1943: 334 of 365 days1944: 365 of 366 days1945: 361 of 365 days1946: 364 of 365 days1947: 334 of 365 days1948: 334 of 366 days1949: 365 of 365 days1950: 243 of 365 days1979: 61 of 365 days1980: 201 of 366 days1988: 297 of 366 days1989: 121 of 365 days1990: 365 of 365 days1991: 213 of 365 days1992: 299 of 366 days1993: 197 of 365 days1945195019801990
16 years of record at Amchitka, 1943 to 1993. 8 years have data for under 90 percent of days and are left out of rankings: 1950, 1979, 1980, 1988, 1989, 1991, 1992, 1993.
Days with data per year at Amchitka
YearDays with dataShare of yearComplete
194333492%Yes
1944365100%Yes
194536199%Yes
1946364100%Yes
194733492%Yes
194833491%Yes
1949365100%Yes
195024367%No
19796117%No
198020155%No
198829781%No
198912133%No
1990365100%Yes
199121358%No
199229982%No
199319754%No

Latest Records

0

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

Extremes by Year

1943 to 1993
Yearly extremes at Amchitka: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)18.3 C (64.9 F)194313.9 C (57.0 F)16
Coldest night (TNn)-9.4 C (15.1 F)1944-6.7 C (19.9 F)16
Wettest day (Rx1day)54.6 mm (2.1 in)199031.5 mm (1.2 in)16
Wettest five days (Rx5day)104.9 mm (4.1 in)194666.0 mm (2.6 in)16
Longest dry spell (CDD)26 days194315 days16

Hottest day (TXx)

Hottest day (TXx) at Amchitka by year The hottest day of the year at Amchitka, 1943 to 1993. The record is 18.3 C (64.9 F) in 1943, marked on the chart; the median year is 13.9 C (57.0 F). 510152019501960197019801990Record: 18.3 C (64.9 F) in 1943
The hottest day of the year at Amchitka, 1943 to 1993. The record is 18.3 C (64.9 F) in 1943, marked on the chart; the median year is 13.9 C (57.0 F).
Hottest day (TXx) at Amchitka by year
YearHottest day (TXx)
194318.3 C (64.9 F)
194413.3 C (55.9 F)
194513.9 C (57.0 F)
194614.4 C (57.9 F)
194711.7 C (53.1 F)
194813.9 C (57.0 F)
194915.6 C (60.1 F)
195015.6 C (60.1 F)
19797.2 C (45.0 F)
198012.8 C (55.0 F)
198815.6 C (60.1 F)
198911.1 C (52.0 F)
199015.0 C (59.0 F)
199115.0 C (59.0 F)
199211.7 C (53.1 F)
199313.9 C (57.0 F)

Coldest night (TNn)

Coldest night (TNn) at Amchitka by year The coldest night of the year at Amchitka, 1943 to 1993. The record is -9.4 C (15.1 F) in 1944, marked on the chart; the median year is -6.7 C (19.9 F). -10-8-6-4-219501960197019801990Record: -9.4 C (15.1 F) in 1944
The coldest night of the year at Amchitka, 1943 to 1993. The record is -9.4 C (15.1 F) in 1944, marked on the chart; the median year is -6.7 C (19.9 F).
Coldest night (TNn) at Amchitka by year
YearColdest night (TNn)
1943-6.7 C (19.9 F)
1944-9.4 C (15.1 F)
1945-7.2 C (19.0 F)
1946-6.1 C (21.0 F)
1947-6.7 C (19.9 F)
1948-3.9 C (25.0 F)
1949-6.7 C (19.9 F)
1950-6.1 C (21.0 F)
1979-8.3 C (17.1 F)
1980-8.9 C (16.0 F)
1988-7.8 C (18.0 F)
1989-3.9 C (25.0 F)
1990-7.8 C (18.0 F)
1991-7.2 C (19.0 F)
1992-6.1 C (21.0 F)
1993-6.1 C (21.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Amchitka by year The wettest day of the year at Amchitka, 1943 to 1993. The record is 54.6 mm (2.1 in) in 1990, marked on the chart; the median year is 31.5 mm (1.2 in). 10203040506019501960197019801990Record: 54.6 mm (2.1 in) in 1990
The wettest day of the year at Amchitka, 1943 to 1993. The record is 54.6 mm (2.1 in) in 1990, marked on the chart; the median year is 31.5 mm (1.2 in).
Wettest day (Rx1day) at Amchitka by year
YearWettest day (Rx1day)
194317.8 mm (0.7 in)
194431.5 mm (1.2 in)
194525.7 mm (1.0 in)
194650.3 mm (2.0 in)
194741.9 mm (1.6 in)
194831.2 mm (1.2 in)
194930.7 mm (1.2 in)
195042.2 mm (1.7 in)
197918.5 mm (0.7 in)
198027.4 mm (1.1 in)
198831.0 mm (1.2 in)
198939.4 mm (1.6 in)
199054.6 mm (2.1 in)
199133.8 mm (1.3 in)
199242.7 mm (1.7 in)
199331.5 mm (1.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Amchitka by year The wettest five days of the year at Amchitka, 1943 to 1993. The record is 104.9 mm (4.1 in) in 1946, marked on the chart; the median year is 66.0 mm (2.6 in). 2040608010012019501960197019801990Record: 104.9 mm (4.1 in) in 1946
The wettest five days of the year at Amchitka, 1943 to 1993. The record is 104.9 mm (4.1 in) in 1946, marked on the chart; the median year is 66.0 mm (2.6 in).
Wettest five days (Rx5day) at Amchitka by year
YearWettest five days (Rx5day)
194345.0 mm (1.8 in)
194453.1 mm (2.1 in)
194551.8 mm (2.0 in)
1946104.9 mm (4.1 in)
194779.3 mm (3.1 in)
194872.4 mm (2.9 in)
194991.2 mm (3.6 in)
195071.7 mm (2.8 in)
197938.8 mm (1.5 in)
198062.2 mm (2.4 in)
198855.9 mm (2.2 in)
198981.3 mm (3.2 in)
199075.2 mm (3.0 in)
199136.7 mm (1.4 in)
199269.7 mm (2.7 in)
199349.7 mm (2.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Amchitka by year The longest dry spell of the year at Amchitka, 1943 to 1993. The record is 26 days in 1943, marked on the chart; the median year is 15 days. 010203019501960197019801990Record: 26 days in 1943
The longest dry spell of the year at Amchitka, 1943 to 1993. The record is 26 days in 1943, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Amchitka by year
YearLongest dry spell (CDD)
194326 days
194413 days
194517 days
194618 days
194714 days
194811 days
194911 days
195015 days
19793 days
198010 days
198811 days
198918 days
199015 days
199117 days
199211 days
199316 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 Amchitka standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Amchitka 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).