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Built 2026-10-16 (16 October 2026)

St Marys Weather Records (USC00508105)

Record envelope, standing records and threshold days for St Marys (USC00508105), Alaska, United States, with 34 years of record.

Key Facts for St Marys

  • St Marys (USC00508105) is a weather station in Alaska, United States at 62.05 latitude and -163.17 longitude, 95 m (311 ft) above sea level.
  • The station reports from 1967 to 2000, 34 years of record.
  • 1,464 records set at St Marys 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, 62.05 latitude, -163.17 longitude.
  • Elevation: 95 m (311 ft).
  • Period of record: 1967 to 2000, 34 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at St Marys, with 2026 drawn through them The band shows the record high and record low for each calendar day at St Marys. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -60-40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at St Marys. 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 St Marys, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan7.8 C (46.0 F)-42.2 C (-44.0 F)n/an/a
Feb5.0 C (41.0 F)-41.1 C (-42.0 F)n/an/a
Mar6.1 C (43.0 F)-40.0 C (-40.0 F)n/an/a
Apr15.6 C (60.1 F)-35.6 C (-32.1 F)n/an/a
May25.6 C (78.1 F)-16.7 C (1.9 F)n/an/a
Jun26.7 C (80.1 F)-3.3 C (26.1 F)n/an/a
Jul28.3 C (82.9 F)-1.1 C (30.0 F)n/an/a
Aug28.9 C (84.0 F)-1.7 C (28.9 F)n/an/a
Sep22.8 C (73.0 F)-9.4 C (15.1 F)n/an/a
Oct13.9 C (57.0 F)-25.0 C (-13.0 F)n/an/a
Nov6.1 C (43.0 F)-33.9 C (-29.0 F)n/an/a
Dec5.0 C (41.0 F)-40.6 C (-41.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at St Marys by the year they were set 1,464 records at St Marys still stand. 1969 holds the most, with 121. 0501001501967: 511968: 731969: 1211970: 1061971: 1061972: 1151973: 781974: 1081975: 1041976: 511977: 891978: 831979: 891980: 951981: 951982: 821983: 18196719691971197319751977197919811983
1,464 records at St Marys still stand. 1969 holds the most, with 121.
Standing records at St Marys by the year they were set
Year setStanding records
196751
196873
1969121
1970106
1971106
1972115
197378
1974108
1975104
197651
197789
197883
197989
198095
198195
198282
198318

Wettest Day of Each Month

Mar: 32.5 mm (1.3 in)
Record daily precipitation for each month at St Marys The wettest day on record for each calendar month at St Marys. The most was 32.5 mm (1.3 in) on 9 March 1982. 010203040 Jan: 19.1 mm (0.8 in), 26 January 1972 Jan Feb: 14.2 mm (0.6 in), 2 February 1982 Feb Mar: 32.5 mm (1.3 in), 9 March 1982 Mar Apr: 25.7 mm (1.0 in), 24 April 1976 Apr May: 18.0 mm (0.7 in), 26 May 1982 May Jun: 24.1 mm (0.9 in), 22 June 1978 Jun Jul: 30.2 mm (1.2 in), 28 July 1974 Jul Aug: 28.7 mm (1.1 in), 15 August 1967 Aug Sep: 20.3 mm (0.8 in), 16 September 1982 Sep Oct: 19.8 mm (0.8 in), 9 October 1972 Oct Nov: 22.6 mm (0.9 in), 15 November 1979 Nov Dec: 26.7 mm (1.1 in), 8 December 1981 Dec
The wettest day on record for each calendar month at St Marys. The most was 32.5 mm (1.3 in) on 9 March 1982.
Record daily precipitation for each month at St Marys
MonthRecord daily precipitation (mm)Date
Jan19.1 mm (0.8 in)26 January 1972
Feb14.2 mm (0.6 in)2 February 1982
Mar32.5 mm (1.3 in)9 March 1982
Apr25.7 mm (1.0 in)24 April 1976
May18.0 mm (0.7 in)26 May 1982
Jun24.1 mm (0.9 in)22 June 1978
Jul30.2 mm (1.2 in)28 July 1974
Aug28.7 mm (1.1 in)15 August 1967
Sep20.3 mm (0.8 in)16 September 1982
Oct19.8 mm (0.8 in)9 October 1972
Nov22.6 mm (0.9 in)15 November 1979
Dec26.7 mm (1.1 in)8 December 1981

Period of Record Coverage

1967 to 1983
Days with data per year at St Marys 17 years of record at St Marys, 1967 to 1983. 7 years have data for under 90 percent of days and are left out of rankings: 1967, 1970, 1973, 1976, 1977, 1982, 1983. 1967: 180 of 365 days1968: 358 of 366 days1969: 356 of 365 days1970: 316 of 365 days1971: 339 of 365 days1972: 335 of 366 days1973: 302 of 365 days1974: 344 of 365 days1975: 340 of 365 days1976: 289 of 366 days1977: 324 of 365 days1978: 360 of 365 days1979: 362 of 365 days1980: 365 of 366 days1981: 363 of 365 days1982: 317 of 365 days1983: 169 of 365 days197019751980
17 years of record at St Marys, 1967 to 1983. 7 years have data for under 90 percent of days and are left out of rankings: 1967, 1970, 1973, 1976, 1977, 1982, 1983.
Days with data per year at St Marys
YearDays with dataShare of yearComplete
196718049%No
196835898%Yes
196935698%Yes
197031687%No
197133993%Yes
197233592%Yes
197330283%No
197434494%Yes
197534093%Yes
197628979%No
197732489%No
197836099%Yes
197936299%Yes
1980365100%Yes
198136399%Yes
198231787%No
198316946%No

Latest Records

0

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

Climate Trend

10 complete years, 1968 to 1982
Annual mean temperature at St Marys as warming stripes, 1968 to 1982 One stripe for each of 10 complete years at St Marys, 1968 to 1982. Blue stripes are years cooler than the station's own mean of -1.4 C (29.5 F); red stripes are warmer. The coolest year was 1971, at -3.4 C (25.8 F), and the warmest was 1978, at 1.2 C (34.2 F). The strongest colour marks a difference of 2.7 C (4.9 F). 1968: -1.6 C, -0.3 C from the station mean1969: 0.0 C, +1.3 C from the station mean1971: -3.4 C, -2.1 C from the station mean1974: -2.3 C, -0.9 C from the station mean1975: -3.0 C, -1.6 C from the station mean1978: 1.2 C, +2.6 C from the station mean1979: -0.4 C, +0.9 C from the station mean1980: -1.3 C, 0.0 C from the station mean1981: -0.8 C, +0.6 C from the station mean1982: -2.1 C, -0.7 C from the station mean19681970197219741976197819801982
One stripe for each of 10 complete years at St Marys, 1968 to 1982. Blue stripes are years cooler than the station's own mean of -1.4 C (29.5 F); red stripes are warmer. The coolest year was 1971, at -3.4 C (25.8 F), and the warmest was 1978, at 1.2 C (34.2 F). The strongest colour marks a difference of 2.7 C (4.9 F).
Annual mean temperature at St Marys as warming stripes, 1968 to 1982
YearAnnual mean temperatureDifference from the station mean
1968-1.6 C-0.25 C
19690.0 C+1.34 C
1971-3.4 C-2.05 C
1974-2.3 C-0.91 C
1975-3.0 C-1.59 C
19781.2 C+2.61 C
1979-0.4 C+0.94 C
1980-1.3 C+0.05 C
1981-0.8 C+0.57 C
1982-2.1 C-0.70 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1967 to 2000
Yearly extremes at St Marys: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)28.9 C (84.0 F)197726.1 C (79.0 F)17
Coldest night (TNn)-42.2 C (-44.0 F)1971-38.9 C (-38.0 F)17
Wettest day (Rx1day)32.5 mm (1.3 in)198224.1 mm (0.9 in)19
Wettest five days (Rx5day)71.6 mm (2.8 in)196746.7 mm (1.8 in)19
Longest dry spell (CDD)54 days197332 days19

Hottest day (TXx)

Hottest day (TXx) at St Marys by year The hottest day of the year at St Marys, 1967 to 2000. The record is 28.9 C (84.0 F) in 1977, marked on the chart; the median year is 26.1 C (79.0 F). 152025301970198019902000Record: 28.9 C (84.0 F) in 1977
The hottest day of the year at St Marys, 1967 to 2000. The record is 28.9 C (84.0 F) in 1977, marked on the chart; the median year is 26.1 C (79.0 F).
Hottest day (TXx) at St Marys by year
YearHottest day (TXx)
196727.2 C (81.0 F)
196828.3 C (82.9 F)
196925.6 C (78.1 F)
197024.4 C (75.9 F)
197123.9 C (75.0 F)
197227.8 C (82.0 F)
197323.9 C (75.0 F)
197427.8 C (82.0 F)
197526.1 C (79.0 F)
197626.7 C (80.1 F)
197728.9 C (84.0 F)
197823.9 C (75.0 F)
197923.3 C (73.9 F)
198028.3 C (82.9 F)
198125.6 C (78.1 F)
198226.7 C (80.1 F)
198317.8 C (64.0 F)
1999n/a
2000n/a

Coldest night (TNn)

Coldest night (TNn) at St Marys by year The coldest night of the year at St Marys, 1967 to 2000. The record is -42.2 C (-44.0 F) in 1971, marked on the chart; the median year is -38.9 C (-38.0 F). -44-42-40-38-36-341970198019902000Record: -42.2 C (-44.0 F) in 1971
The coldest night of the year at St Marys, 1967 to 2000. The record is -42.2 C (-44.0 F) in 1971, marked on the chart; the median year is -38.9 C (-38.0 F).
Coldest night (TNn) at St Marys by year
YearColdest night (TNn)
1967-37.2 C (-35.0 F)
1968-35.0 C (-31.0 F)
1969-41.1 C (-42.0 F)
1970-36.7 C (-34.1 F)
1971-42.2 C (-44.0 F)
1972-40.6 C (-41.1 F)
1973-36.7 C (-34.1 F)
1974-41.1 C (-42.0 F)
1975-38.9 C (-38.0 F)
1976-37.8 C (-36.0 F)
1977-38.9 C (-38.0 F)
1978-39.4 C (-38.9 F)
1979-40.6 C (-41.1 F)
1980-42.2 C (-44.0 F)
1981-37.2 C (-35.0 F)
1982-38.3 C (-36.9 F)
1983-34.4 C (-29.9 F)
1999n/a
2000n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at St Marys by year The wettest day of the year at St Marys, 1967 to 2000. The record is 32.5 mm (1.3 in) in 1982, marked on the chart; the median year is 24.1 mm (0.9 in). 102030401970198019902000Record: 32.5 mm (1.3 in) in 1982
The wettest day of the year at St Marys, 1967 to 2000. The record is 32.5 mm (1.3 in) in 1982, marked on the chart; the median year is 24.1 mm (0.9 in).
Wettest day (Rx1day) at St Marys by year
YearWettest day (Rx1day)
196728.7 mm (1.1 in)
196827.4 mm (1.1 in)
196916.3 mm (0.6 in)
197026.9 mm (1.1 in)
197124.4 mm (1.0 in)
197220.6 mm (0.8 in)
197316.8 mm (0.7 in)
197430.2 mm (1.2 in)
197513.7 mm (0.5 in)
197625.7 mm (1.0 in)
197716.3 mm (0.6 in)
197824.1 mm (0.9 in)
197922.6 mm (0.9 in)
198022.9 mm (0.9 in)
198126.7 mm (1.1 in)
198232.5 mm (1.3 in)
198317.5 mm (0.7 in)
199927.9 mm (1.1 in)
200010.2 mm (0.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at St Marys by year The wettest five days of the year at St Marys, 1967 to 2000. The record is 71.6 mm (2.8 in) in 1967, marked on the chart; the median year is 46.7 mm (1.8 in). 204060801970198019902000Record: 71.6 mm (2.8 in) in 1967
The wettest five days of the year at St Marys, 1967 to 2000. The record is 71.6 mm (2.8 in) in 1967, marked on the chart; the median year is 46.7 mm (1.8 in).
Wettest five days (Rx5day) at St Marys by year
YearWettest five days (Rx5day)
196771.6 mm (2.8 in)
196848.5 mm (1.9 in)
196935.0 mm (1.4 in)
197051.8 mm (2.0 in)
197145.0 mm (1.8 in)
197244.2 mm (1.7 in)
197326.6 mm (1.0 in)
197465.5 mm (2.6 in)
197533.2 mm (1.3 in)
197625.7 mm (1.0 in)
197748.5 mm (1.9 in)
197842.5 mm (1.7 in)
197948.0 mm (1.9 in)
198059.5 mm (2.3 in)
198146.7 mm (1.8 in)
198256.1 mm (2.2 in)
198342.6 mm (1.7 in)
199956.1 mm (2.2 in)
200028.0 mm (1.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at St Marys by year The longest dry spell of the year at St Marys, 1967 to 2000. The record is 54 days in 1973, marked on the chart; the median year is 32 days. 20304050601970198019902000Record: 54 days in 1973
The longest dry spell of the year at St Marys, 1967 to 2000. The record is 54 days in 1973, marked on the chart; the median year is 32 days.
Longest dry spell (CDD) at St Marys by year
YearLongest dry spell (CDD)
196726 days
196825 days
196942 days
197031 days
197129 days
197239 days
197354 days
197435 days
197529 days
197641 days
197727 days
197841 days
197935 days
198032 days
198120 days
198223 days
198338 days
199921 days
200046 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 St Marys standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for St Marys 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).