Built 2026-10-18 (18 October 2026)

Wales Weather Records (USW00026618)

Record envelope, standing records and threshold days for Wales (USW00026618), Alaska, United States, with 71 years of record.

Key Facts for Wales

  • Wales (USW00026618) is a weather station in Alaska, United States at 65.62 latitude and -168.10 longitude, 8 m (25 ft) above sea level.
  • The station reports from 1925 to 1995, 71 years of record.
  • 1,464 records set at Wales still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Wales set a daily record high minimum temperature of 10.0 C (50.0 F) on 27 August 1995.

About the Station

  • Location: Alaska, United States, 65.62 latitude, -168.10 longitude.
  • Elevation: 8 m (25 ft).
  • Period of record: 1925 to 1995, 71 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Wales, with 2026 drawn through them The band shows the record high and record low for each calendar day at Wales. 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 Wales. 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 Wales, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.7 C (53.1 F)-42.2 C (-44.0 F)n/an/a
Feb9.4 C (48.9 F)-42.2 C (-44.0 F)n/an/a
Mar5.6 C (42.1 F)-41.1 C (-42.0 F)n/an/a
Apr8.9 C (48.0 F)-35.6 C (-32.1 F)n/an/a
May13.9 C (57.0 F)-23.9 C (-11.0 F)n/an/a
Jun22.2 C (72.0 F)-6.7 C (19.9 F)n/an/a
Jul23.9 C (75.0 F)-5.0 C (23.0 F)n/an/a
Aug22.8 C (73.0 F)-1.1 C (30.0 F)n/an/a
Sep18.9 C (66.0 F)-7.2 C (19.0 F)n/an/a
Oct12.2 C (54.0 F)-21.7 C (-7.1 F)n/an/a
Nov15.6 C (60.1 F)-33.3 C (-27.9 F)n/an/a
Dec6.7 C (44.1 F)-37.2 C (-35.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Wales by the year they were set 1,464 records at Wales still stand. 1926 holds the most, with 93. 02550751001925: 111926: 931927: 341928: 311929: 121944: 141945: 271946: 241947: 231948: 341949: 301950: 191951: 181952: 101953: 211954: 331955: 381956: 441957: 441958: 301959: 81960: 221961: 171962: 251963: 291964: 211965: 441966: 261967: 171968: 241969: 201970: 181971: 151972: 201973: 141974: 241975: 351976: 211977: 481979: 61980: 81981: 291982: 111983: 321984: 391985: 531986: 201987: 121988: 201989: 331990: 231991: 181992: 311993: 221994: 311995: 381925194519511957196319691975198219881994
1,464 records at Wales still stand. 1926 holds the most, with 93.
Standing records at Wales by the year they were set
Year setStanding records
192511
192693
192734
192831
192912
194414
194527
194624
194723
194834
194930
195019
195118
195210
195321
195433
195538
195644
195744
195830
19598
196022
196117
196225
196329
196421
196544
196626
196717
196824
196920
197018
197115
197220
197314
197424
197535
197621
197748
19796
19808
198129
198211
198332
198439
198553
198620
198712
198820
198933
199023
199118
199231
199322
199431
199538

All-Time Record Progression

1 new records
When Wales set new all-time records 1 all-time records were set at Wales between 4 August 1977 and 4 August 1977. Each dot is a new record. Record high minimum temperature4 August 1977: Record high minimum temperature 13.9 C (57.0 F)
1 all-time records were set at Wales between 4 August 1977 and 4 August 1977. Each dot is a new record.
When Wales set new all-time records
DateKindDetail
1977-08-04Record high minimum temperatureRecord high minimum temperature 13.9 C (57.0 F)

Wettest Day of Each Month

Aug: 51.6 mm (2.0 in)
Record daily precipitation for each month at Wales The wettest day on record for each calendar month at Wales. The most was 51.6 mm (2.0 in) on 11 August 1958. 0204060 Jan: 30.5 mm (1.2 in), 4 January 1982 Jan Feb: 25.4 mm (1.0 in), 3 February 1982 Feb Mar: 45.7 mm (1.8 in), 15 March 1990 Mar Apr: 25.4 mm (1.0 in), 5 April 1967 Apr May: 36.8 mm (1.4 in), 25 May 1981 May Jun: 16.5 mm (0.6 in), 29 June 1927 Jun Jul: 48.5 mm (1.9 in), 26 July 1956 Jul Aug: 51.6 mm (2.0 in), 11 August 1958 Aug Sep: 42.7 mm (1.7 in), 1 September 1958 Sep Oct: 27.9 mm (1.1 in), 18 October 1977 Oct Nov: 30.5 mm (1.2 in), 27 November 1954 Nov Dec: 20.3 mm (0.8 in), 28 December 1990 Dec
The wettest day on record for each calendar month at Wales. The most was 51.6 mm (2.0 in) on 11 August 1958.
Record daily precipitation for each month at Wales
MonthRecord daily precipitation (mm)Date
Jan30.5 mm (1.2 in)4 January 1982
Feb25.4 mm (1.0 in)3 February 1982
Mar45.7 mm (1.8 in)15 March 1990
Apr25.4 mm (1.0 in)5 April 1967
May36.8 mm (1.4 in)25 May 1981
Jun16.5 mm (0.6 in)29 June 1927
Jul48.5 mm (1.9 in)26 July 1956
Aug51.6 mm (2.0 in)11 August 1958
Sep42.7 mm (1.7 in)1 September 1958
Oct27.9 mm (1.1 in)18 October 1977
Nov30.5 mm (1.2 in)27 November 1954
Dec20.3 mm (0.8 in)28 December 1990

Period of Record Coverage

1925 to 1995
Days with data per year at Wales 56 years of record at Wales, 1925 to 1995. 7 years have data for under 90 percent of days and are left out of rankings: 1925, 1929, 1944, 1946, 1977, 1979, 1995. 1925: 83 of 365 days1926: 361 of 365 days1927: 361 of 365 days1928: 365 of 366 days1929: 120 of 365 days1944: 213 of 366 days1945: 334 of 365 days1946: 301 of 365 days1947: 356 of 365 days1948: 361 of 366 days1949: 365 of 365 days1950: 365 of 365 days1951: 364 of 365 days1952: 353 of 366 days1953: 362 of 365 days1954: 365 of 365 days1955: 364 of 365 days1956: 341 of 366 days1957: 364 of 365 days1958: 364 of 365 days1959: 352 of 365 days1960: 365 of 366 days1961: 361 of 365 days1962: 357 of 365 days1963: 360 of 365 days1964: 360 of 366 days1965: 362 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 362 of 366 days1969: 362 of 365 days1970: 333 of 365 days1971: 365 of 365 days1972: 365 of 366 days1973: 362 of 365 days1974: 362 of 365 days1975: 363 of 365 days1976: 361 of 366 days1977: 327 of 365 days1979: 148 of 365 days1980: 365 of 366 days1981: 360 of 365 days1982: 357 of 365 days1983: 360 of 365 days1984: 357 of 366 days1985: 363 of 365 days1986: 365 of 365 days1987: 363 of 365 days1988: 363 of 366 days1989: 361 of 365 days1990: 364 of 365 days1991: 364 of 365 days1992: 364 of 366 days1993: 364 of 365 days1994: 364 of 365 days1995: 242 of 365 days19501960197019801990
56 years of record at Wales, 1925 to 1995. 7 years have data for under 90 percent of days and are left out of rankings: 1925, 1929, 1944, 1946, 1977, 1979, 1995.
Days with data per year at Wales
YearDays with dataShare of yearComplete
19258323%No
192636199%Yes
192736199%Yes
1928365100%Yes
192912033%No
194421358%No
194533492%Yes
194630182%No
194735698%Yes
194836199%Yes
1949365100%Yes
1950365100%Yes
1951364100%Yes
195235396%Yes
195336299%Yes
1954365100%Yes
1955364100%Yes
195634193%Yes
1957364100%Yes
1958364100%Yes
195935296%Yes
1960365100%Yes
196136199%Yes
196235798%Yes
196336099%Yes
196436098%Yes
196536299%Yes
1966365100%Yes
1967365100%Yes
196836299%Yes
196936299%Yes
197033391%Yes
1971365100%Yes
1972365100%Yes
197336299%Yes
197436299%Yes
197536399%Yes
197636199%Yes
197732790%No
197914841%No
1980365100%Yes
198136099%Yes
198235798%Yes
198336099%Yes
198435798%Yes
198536399%Yes
1986365100%Yes
198736399%Yes
198836399%Yes
198936199%Yes
1990364100%Yes
1991364100%Yes
199236499%Yes
1993364100%Yes
1994364100%Yes
199524266%No

Latest Records

20
Latest records at Wales
DateStationRecordValueBeat old record byOld record stoodSignificance
27 August 1995Wales, USdaily high min10.0 C (50.0 F)0.6 C (1.1 F)36 years19 of 100 (Routine)
15 August 1995Wales, USdaily low min1.7 C (35.1 F)0.5 C (0.9 F)41 years21 of 100 (Routine)
7 August 1995Wales, USdaily low max (Tie)5.6 C (42.1 F)tie49 years5 of 100 (Routine)
28 July 1995Wales, USdaily low min-2.2 C (28.0 F)3.3 C (5.9 F)14 years24 of 100 (Routine)
27 July 1995Wales, USdaily low max5.6 C (42.1 F)1.1 C (2.0 F)45 years23 of 100 (Routine)
27 July 1995Wales, USmonthly low min-5.0 C (23.0 F)0.6 C (1.1 F)0 years19 of 100 (Routine)
25 July 1995Wales, USdaily low min-2.2 C (28.0 F)4.4 C (7.9 F)46 years39 of 100 (Notable)
23 July 1995Wales, USdaily low min0.6 C (33.1 F)1.1 C (2.0 F)22 years17 of 100 (Routine)
22 July 1995Wales, USdaily low min1.1 C (34.0 F)1.1 C (2.0 F)32 years20 of 100 (Routine)
21 July 1995Wales, USdaily low min0.0 C (32.0 F)2.2 C (4.0 F)37 years27 of 100 (Routine)
20 July 1995Wales, USdaily low min (Tie)0.0 C (32.0 F)tie42 years4 of 100 (Routine)
19 July 1995Wales, USdaily low min-1.1 C (30.0 F)2.2 C (4.0 F)42 years28 of 100 (Routine)
18 July 1995Wales, USdaily low min1.1 C (34.0 F)0.6 C (1.1 F)66 years29 of 100 (Routine)
15 July 1995Wales, USmonthly low min-4.4 C (24.1 F)0.5 C (0.9 F)0 years19 of 100 (Routine)
14 July 1995Wales, USmonthly low min-3.9 C (25.0 F)1.1 C (2.0 F)48 years35 of 100 (Notable)
10 July 1995Wales, USdaily low min (Tie)0.0 C (32.0 F)tie41 years4 of 100 (Routine)
9 July 1995Wales, USdaily low min (Tie)0.0 C (32.0 F)tie18 years3 of 100 (Routine)
5 July 1995Wales, USdaily low min-1.1 C (30.0 F)0.5 C (0.9 F)33 years19 of 100 (Routine)
3 July 1995Wales, USdaily low min-1.1 C (30.0 F)0.5 C (0.9 F)45 years22 of 100 (Routine)
2 July 1995Wales, USdaily low min0.0 C (32.0 F)0.6 C (1.1 F)28 years17 of 100 (Routine)

Climate Trend

48 complete years, 1926 to 1994
Annual mean temperature at Wales as warming stripes, 1926 to 1994 One stripe for each of 48 complete years at Wales, 1926 to 1994. Blue stripes are years cooler than the station's own mean of -6.0 C (21.2 F); red stripes are warmer. The coolest year was 1964, at -7.9 C (17.8 F), and the warmest was 1967, at -3.6 C (25.5 F). The strongest colour marks a difference of 2.4 C (4.3 F). 1926: -4.0 C, +2.0 C from the station mean1927: -5.7 C, +0.3 C from the station mean1928: -6.1 C, -0.1 C from the station mean1947: -5.9 C, 0.0 C from the station mean1948: -6.6 C, -0.7 C from the station mean1949: -5.3 C, +0.7 C from the station mean1950: -3.7 C, +2.3 C from the station mean1951: -6.0 C, 0.0 C from the station mean1952: -6.0 C, 0.0 C from the station mean1953: -6.9 C, -0.9 C from the station mean1954: -5.8 C, +0.1 C from the station mean1955: -7.8 C, -1.8 C from the station mean1956: -7.7 C, -1.7 C from the station mean1957: -4.6 C, +1.3 C from the station mean1958: -6.0 C, 0.0 C from the station mean1959: -6.4 C, -0.4 C from the station mean1960: -5.4 C, +0.6 C from the station mean1961: -7.3 C, -1.3 C from the station mean1962: -4.2 C, +1.8 C from the station mean1963: -4.7 C, +1.2 C from the station mean1964: -7.9 C, -1.9 C from the station mean1965: -7.0 C, -1.0 C from the station mean1966: -6.4 C, -0.5 C from the station mean1967: -3.6 C, +2.4 C from the station mean1968: -6.5 C, -0.5 C from the station mean1969: -5.6 C, +0.4 C from the station mean1971: -7.4 C, -1.4 C from the station mean1972: -5.2 C, +0.8 C from the station mean1973: -6.1 C, -0.2 C from the station mean1974: -7.3 C, -1.3 C from the station mean1975: -7.6 C, -1.6 C from the station mean1976: -7.7 C, -1.8 C from the station mean1977: -6.1 C, -0.2 C from the station mean1980: -5.6 C, +0.3 C from the station mean1981: -5.0 C, +1.0 C from the station mean1982: -4.3 C, +1.7 C from the station mean1983: -5.0 C, +1.0 C from the station mean1984: -7.0 C, -1.1 C from the station mean1985: -5.5 C, +0.5 C from the station mean1986: -5.2 C, +0.8 C from the station mean1987: -6.8 C, -0.8 C from the station mean1988: -6.7 C, -0.7 C from the station mean1989: -4.3 C, +1.6 C from the station mean1990: -6.0 C, 0.0 C from the station mean1991: -5.4 C, +0.5 C from the station mean1992: -7.0 C, -1.0 C from the station mean1993: -5.1 C, +0.9 C from the station mean1994: -7.6 C, -1.7 C from the station mean19261930194019501960197019801990
One stripe for each of 48 complete years at Wales, 1926 to 1994. Blue stripes are years cooler than the station's own mean of -6.0 C (21.2 F); red stripes are warmer. The coolest year was 1964, at -7.9 C (17.8 F), and the warmest was 1967, at -3.6 C (25.5 F). The strongest colour marks a difference of 2.4 C (4.3 F).
Annual mean temperature at Wales as warming stripes, 1926 to 1994
YearAnnual mean temperatureDifference from the station mean
1926-4.0 C+1.98 C
1927-5.7 C+0.30 C
1928-6.1 C-0.07 C
1947-5.9 C+0.04 C
1948-6.6 C-0.65 C
1949-5.3 C+0.67 C
1950-3.7 C+2.26 C
1951-6.0 C+0.01 C
1952-6.0 C+0.01 C
1953-6.9 C-0.88 C
1954-5.8 C+0.14 C
1955-7.8 C-1.82 C
1956-7.7 C-1.73 C
1957-4.6 C+1.35 C
1958-6.0 C+0.02 C
1959-6.4 C-0.39 C
1960-5.4 C+0.57 C
1961-7.3 C-1.27 C
1962-4.2 C+1.79 C
1963-4.7 C+1.25 C
1964-7.9 C-1.92 C
1965-7.0 C-0.98 C
1966-6.4 C-0.45 C
1967-3.6 C+2.37 C
1968-6.5 C-0.48 C
1969-5.6 C+0.41 C
1971-7.4 C-1.43 C
1972-5.2 C+0.81 C
1973-6.1 C-0.16 C
1974-7.3 C-1.27 C
1975-7.6 C-1.64 C
1976-7.7 C-1.76 C
1977-6.1 C-0.16 C
1980-5.6 C+0.34 C
1981-5.0 C+1.01 C
1982-4.3 C+1.66 C
1983-5.0 C+1.00 C
1984-7.0 C-1.06 C
1985-5.5 C+0.49 C
1986-5.2 C+0.82 C
1987-6.8 C-0.77 C
1988-6.7 C-0.70 C
1989-4.3 C+1.65 C
1990-6.0 C+0.02 C
1991-5.4 C+0.55 C
1992-7.0 C-1.00 C
1993-5.1 C+0.89 C
1994-7.6 C-1.65 C

The fitted trend in annual mean temperature here over 1926 to 1994 is -0.1 C (-0.3 to 0.1) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.5 to 0.2) per decade. The slope is a straight line fitted to 48 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Wales
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.3 to 0.1) per decade-0.1 F (-0.5 to 0.2) per decade1926 to 199448Not clearly different from zero
Mean daily maximum-0.1 C (-0.3 to 0.1) per decade-0.2 F (-0.6 to 0.1) per decade1926 to 199448Not clearly different from zero
Mean daily minimum-0.01 C (-0.21 to 0.19) per decade-0.02 F (-0.39 to 0.35) per decade1926 to 199448Not clearly different from zero

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

1925 to 1995
Yearly extremes at Wales: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)23.9 C (75.0 F)192618.3 C (64.9 F)56
Coldest night (TNn)-42.2 C (-44.0 F)1955-36.1 C (-33.0 F)56
Wettest day (Rx1day)51.6 mm (2.0 in)195823.4 mm (0.9 in)56
Wettest five days (Rx5day)104.7 mm (4.1 in)198643.2 mm (1.7 in)56
Longest dry spell (CDD)152 days196646 days56

Hottest day (TXx)

Hottest day (TXx) at Wales by year The hottest day of the year at Wales, 1925 to 1995. The record is 23.9 C (75.0 F) in 1926, marked on the chart; the median year is 18.3 C (64.9 F). 510152025194019601980Record: 23.9 C (75.0 F) in 1926
The hottest day of the year at Wales, 1925 to 1995. The record is 23.9 C (75.0 F) in 1926, marked on the chart; the median year is 18.3 C (64.9 F).
Hottest day (TXx) at Wales by year
YearHottest day (TXx)
192511.7 C (53.1 F)
192623.9 C (75.0 F)
192720.6 C (69.1 F)
192818.3 C (64.9 F)
19297.8 C (46.0 F)
194417.2 C (63.0 F)
194517.2 C (63.0 F)
194620.6 C (69.1 F)
194721.7 C (71.1 F)
194817.2 C (63.0 F)
194918.3 C (64.9 F)
195021.1 C (70.0 F)
195116.1 C (61.0 F)
195220.0 C (68.0 F)
195319.4 C (66.9 F)
195416.1 C (61.0 F)
195517.8 C (64.0 F)
195619.4 C (66.9 F)
195718.9 C (66.0 F)
195816.7 C (62.1 F)
195915.6 C (60.1 F)
196020.6 C (69.1 F)
196115.0 C (59.0 F)
196220.0 C (68.0 F)
196316.7 C (62.1 F)
196418.9 C (66.0 F)
196517.2 C (63.0 F)
196620.6 C (69.1 F)
196718.9 C (66.0 F)
196819.4 C (66.9 F)
196916.1 C (61.0 F)
197015.0 C (59.0 F)
197118.3 C (64.9 F)
197222.2 C (72.0 F)
197317.8 C (64.0 F)
197418.3 C (64.9 F)
197516.1 C (61.0 F)
197617.2 C (63.0 F)
197720.6 C (69.1 F)
197919.4 C (66.9 F)
198016.7 C (62.1 F)
198120.6 C (69.1 F)
198216.7 C (62.1 F)
198317.8 C (64.0 F)
198417.8 C (64.0 F)
198521.7 C (71.1 F)
198617.8 C (64.0 F)
198718.9 C (66.0 F)
198817.2 C (63.0 F)
198915.0 C (59.0 F)
199022.8 C (73.0 F)
199119.4 C (66.9 F)
199218.3 C (64.9 F)
199320.6 C (69.1 F)
199416.7 C (62.1 F)
199514.4 C (57.9 F)

Coldest night (TNn)

Coldest night (TNn) at Wales by year The coldest night of the year at Wales, 1925 to 1995. The record is -42.2 C (-44.0 F) in 1955, marked on the chart; the median year is -36.1 C (-33.0 F). -45-40-35-30-25194019601980Record: -42.2 C (-44.0 F) in 1955
The coldest night of the year at Wales, 1925 to 1995. The record is -42.2 C (-44.0 F) in 1955, marked on the chart; the median year is -36.1 C (-33.0 F).
Coldest night (TNn) at Wales by year
YearColdest night (TNn)
1925-32.2 C (-26.0 F)
1926-35.6 C (-32.1 F)
1927-36.7 C (-34.1 F)
1928-33.3 C (-27.9 F)
1929-37.8 C (-36.0 F)
1944-31.7 C (-25.1 F)
1945-38.9 C (-38.0 F)
1946-33.9 C (-29.0 F)
1947-40.6 C (-41.1 F)
1948-36.1 C (-33.0 F)
1949-33.9 C (-29.0 F)
1950-30.0 C (-22.0 F)
1951-40.0 C (-40.0 F)
1952-37.2 C (-35.0 F)
1953-35.0 C (-31.0 F)
1954-38.3 C (-36.9 F)
1955-42.2 C (-44.0 F)
1956-37.8 C (-36.0 F)
1957-34.4 C (-29.9 F)
1958-32.8 C (-27.0 F)
1959-32.2 C (-26.0 F)
1960-36.7 C (-34.1 F)
1961-38.9 C (-38.0 F)
1962-29.4 C (-20.9 F)
1963-37.2 C (-35.0 F)
1964-38.9 C (-38.0 F)
1965-35.6 C (-32.1 F)
1966-36.7 C (-34.1 F)
1967-36.1 C (-33.0 F)
1968-37.8 C (-36.0 F)
1969-35.6 C (-32.1 F)
1970-39.4 C (-38.9 F)
1971-37.8 C (-36.0 F)
1972-32.8 C (-27.0 F)
1973-35.6 C (-32.1 F)
1974-36.1 C (-33.0 F)
1975-37.8 C (-36.0 F)
1976-39.4 C (-38.9 F)
1977-41.1 C (-42.0 F)
1979-31.7 C (-25.1 F)
1980-35.6 C (-32.1 F)
1981-35.6 C (-32.1 F)
1982-31.1 C (-24.0 F)
1983-33.9 C (-29.0 F)
1984-40.0 C (-40.0 F)
1985-33.3 C (-27.9 F)
1986-33.3 C (-27.9 F)
1987-35.0 C (-31.0 F)
1988-37.8 C (-36.0 F)
1989-42.2 C (-44.0 F)
1990-40.0 C (-40.0 F)
1991-38.9 C (-38.0 F)
1992-35.6 C (-32.1 F)
1993-37.8 C (-36.0 F)
1994-36.1 C (-33.0 F)
1995-38.3 C (-36.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Wales by year The wettest day of the year at Wales, 1925 to 1995. The record is 51.6 mm (2.0 in) in 1958, marked on the chart; the median year is 23.4 mm (0.9 in). 0204060194019601980Record: 51.6 mm (2.0 in) in 1958
The wettest day of the year at Wales, 1925 to 1995. The record is 51.6 mm (2.0 in) in 1958, marked on the chart; the median year is 23.4 mm (0.9 in).
Wettest day (Rx1day) at Wales by year
YearWettest day (Rx1day)
19255.1 mm (0.20 in)
192624.4 mm (1.0 in)
192718.0 mm (0.7 in)
192834.0 mm (1.3 in)
192929.2 mm (1.1 in)
194421.8 mm (0.9 in)
194513.2 mm (0.5 in)
194629.2 mm (1.1 in)
194713.2 mm (0.5 in)
194814.0 mm (0.6 in)
194910.2 mm (0.4 in)
195019.3 mm (0.8 in)
195139.9 mm (1.6 in)
195218.8 mm (0.7 in)
195322.9 mm (0.9 in)
195430.5 mm (1.2 in)
195546.5 mm (1.8 in)
195648.5 mm (1.9 in)
195725.7 mm (1.0 in)
195851.6 mm (2.0 in)
195911.9 mm (0.5 in)
196026.9 mm (1.1 in)
196126.9 mm (1.1 in)
196238.1 mm (1.5 in)
196325.4 mm (1.0 in)
196421.3 mm (0.8 in)
196528.7 mm (1.1 in)
196615.5 mm (0.6 in)
196725.4 mm (1.0 in)
196815.7 mm (0.6 in)
196915.7 mm (0.6 in)
197013.5 mm (0.5 in)
197116.3 mm (0.6 in)
197227.4 mm (1.1 in)
197317.8 mm (0.7 in)
197429.2 mm (1.1 in)
197536.1 mm (1.4 in)
197621.1 mm (0.8 in)
197727.9 mm (1.1 in)
197926.7 mm (1.1 in)
198011.9 mm (0.5 in)
198136.8 mm (1.4 in)
198230.5 mm (1.2 in)
198316.5 mm (0.6 in)
198423.9 mm (0.9 in)
198522.9 mm (0.9 in)
198640.1 mm (1.6 in)
198712.4 mm (0.5 in)
198817.8 mm (0.7 in)
198913.5 mm (0.5 in)
199045.7 mm (1.8 in)
199116.3 mm (0.6 in)
199220.6 mm (0.8 in)
199327.9 mm (1.1 in)
199445.7 mm (1.8 in)
199511.9 mm (0.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Wales by year The wettest five days of the year at Wales, 1925 to 1995. The record is 104.7 mm (4.1 in) in 1986, marked on the chart; the median year is 43.2 mm (1.7 in). 0255075100125194019601980Record: 104.7 mm (4.1 in) in 1986
The wettest five days of the year at Wales, 1925 to 1995. The record is 104.7 mm (4.1 in) in 1986, marked on the chart; the median year is 43.2 mm (1.7 in).
Wettest five days (Rx5day) at Wales by year
YearWettest five days (Rx5day)
192514.8 mm (0.6 in)
192657.0 mm (2.2 in)
192722.9 mm (0.9 in)
192868.2 mm (2.7 in)
192950.8 mm (2.0 in)
194430.3 mm (1.2 in)
194527.0 mm (1.1 in)
194666.5 mm (2.6 in)
194721.6 mm (0.9 in)
194827.7 mm (1.1 in)
194928.5 mm (1.1 in)
195035.3 mm (1.4 in)
195156.4 mm (2.2 in)
195222.3 mm (0.9 in)
195346.8 mm (1.8 in)
195451.6 mm (2.0 in)
195583.6 mm (3.3 in)
195659.9 mm (2.4 in)
195762.5 mm (2.5 in)
195895.0 mm (3.7 in)
195927.4 mm (1.1 in)
196059.1 mm (2.3 in)
196140.6 mm (1.6 in)
196238.6 mm (1.5 in)
196371.4 mm (2.8 in)
196444.2 mm (1.7 in)
196558.2 mm (2.3 in)
196628.0 mm (1.1 in)
196732.0 mm (1.3 in)
196830.0 mm (1.2 in)
196924.6 mm (1.0 in)
197023.1 mm (0.9 in)
197131.5 mm (1.2 in)
197245.4 mm (1.8 in)
197345.5 mm (1.8 in)
197463.3 mm (2.5 in)
197546.0 mm (1.8 in)
197635.6 mm (1.4 in)
197734.0 mm (1.3 in)
197972.4 mm (2.9 in)
198024.9 mm (1.0 in)
198162.2 mm (2.4 in)
198292.5 mm (3.6 in)
198357.1 mm (2.2 in)
198442.1 mm (1.7 in)
198548.2 mm (1.9 in)
1986104.7 mm (4.1 in)
198719.1 mm (0.8 in)
198833.8 mm (1.3 in)
198938.2 mm (1.5 in)
199078.7 mm (3.1 in)
199136.0 mm (1.4 in)
199236.1 mm (1.4 in)
199357.0 mm (2.2 in)
199484.6 mm (3.3 in)
199514.7 mm (0.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Wales by year The longest dry spell of the year at Wales, 1925 to 1995. The record is 152 days in 1966, marked on the chart; the median year is 46 days. 050100150200194019601980Record: 152 days in 1966
The longest dry spell of the year at Wales, 1925 to 1995. The record is 152 days in 1966, marked on the chart; the median year is 46 days.
Longest dry spell (CDD) at Wales by year
YearLongest dry spell (CDD)
192522 days
192632 days
192732 days
192833 days
192935 days
194456 days
194552 days
194631 days
194774 days
194833 days
194930 days
195027 days
195163 days
195231 days
195357 days
195463 days
195535 days
195669 days
195731 days
195831 days
195973 days
196065 days
196179 days
196227 days
196360 days
196446 days
196564 days
1966152 days
196750 days
196868 days
196956 days
197081 days
197158 days
197263 days
197360 days
1974109 days
197555 days
197649 days
197728 days
197936 days
198037 days
198121 days
198243 days
198345 days
198435 days
198591 days
198660 days
198740 days
198852 days
198920 days
199021 days
199135 days
199228 days
199326 days
199446 days
199536 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.

Frost Dates and Growing Season

48 years with a frost

Across 48 years with a frost, the median last spring frost at Wales falls on 21 June and the median first autumn frost on 12 September, which leaves a median of 83 days between them.

Fitted over all years, the growing season changes by +0.4 days per decade at this station.

Frost dates and growing season at Wales
MeasureMedian, all yearsEarliest periodRecent period (1962 to 1994)Recent against earliestFitted trend
Last spring frost21 Junen/a21 Junen/a-0.1 days per decade
First autumn frost12 Septembern/a12 Septembern/a+0.2 days per decade
Growing days83 daysn/a83 daysn/a+0.4 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

46 years, 1926 to 1994

A day with at least 22.7 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 65.5 mm (2.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Wales: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years22.7 mm (0.9 in)
5 years33.0 mm (1.3 in)
10 years40.3 mm (1.6 in)
25 years50.0 mm (2.0 in)
50 years57.6 mm (2.3 in)Longer than the 46 years of record
100 years65.5 mm (2.6 in)Longer than the 46 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 46 years of values from 1926 to 1994.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 51.6 mm (2.0 in) in 1958; 48.5 mm (1.9 in) in 1956; 46.5 mm (1.8 in) in 1955.

Download the Data

  • Data for Wales standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Wales 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

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