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White Swan Rs Weather Records (USC00459191)

Record envelope, standing records and threshold days for White Swan Rs (USC00459191), Washington, United States, with 55 years of record.

Key Facts for White Swan Rs

  • White Swan Rs (USC00459191) is a weather station in Washington, United States at 46.38 latitude and -120.72 longitude, 296 m (971 ft) above sea level.
  • The station reports from 1927 to 1981, 55 years of record.
  • 1,464 records set at White Swan Rs still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • White Swan Rs tied a daily record low maximum temperature of 23.3 C (73.9 F) on 13 July 1981.

About the Station

  • Location: Washington, United States, 46.38 latitude, -120.72 longitude.
  • Elevation: 296 m (971 ft).
  • Period of record: 1927 to 1981, 55 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 White Swan Rs, with 2026 drawn through them The band shows the record high and record low for each calendar day at White Swan Rs. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at White Swan Rs. 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 White Swan Rs, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-34.4 C (-29.9 F)n/an/a
Feb21.1 C (70.0 F)-31.1 C (-24.0 F)n/an/a
Mar26.7 C (80.1 F)-16.1 C (3.0 F)n/an/a
Apr33.3 C (91.9 F)-8.3 C (17.1 F)n/an/a
May37.8 C (100.0 F)-4.4 C (24.1 F)n/an/a
Jun40.0 C (104.0 F)-1.1 C (30.0 F)n/an/a
Jul43.9 C (111.0 F)0.6 C (33.1 F)n/an/a
Aug41.7 C (107.1 F)1.1 C (34.0 F)n/an/a
Sep36.7 C (98.1 F)-5.6 C (21.9 F)n/an/a
Oct32.2 C (90.0 F)-12.2 C (10.0 F)n/an/a
Nov23.3 C (73.9 F)-17.2 C (1.0 F)n/an/a
Dec17.8 C (64.0 F)-28.9 C (-20.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at White Swan Rs by the year they were set 1,464 records at White Swan Rs still stand. 1929 holds the most, with 53. 02040601927: 51928: 311929: 531930: 491931: 251932: 141933: 521934: 301935: 361936: 321937: 411938: 231939: 291940: 171941: 161942: 221943: 251944: 271945: 221947: 311948: 301949: 271950: 381951: 221952: 251953: 261954: 201955: 411956: 191957: 331958: 271959: 311960: 341961: 181962: 321963: 211964: 271965: 151966: 111967: 351968: 391969: 191970: 311971: 351972: 441973: 181974: 291975: 261976: 231977: 301978: 151979: 221980: 111981: 10192719331939194519521958196419701976
1,464 records at White Swan Rs still stand. 1929 holds the most, with 53.
Standing records at White Swan Rs by the year they were set
Year setStanding records
19275
192831
192953
193049
193125
193214
193352
193430
193536
193632
193741
193823
193929
194017
194116
194222
194325
194427
194522
194731
194830
194927
195038
195122
195225
195326
195420
195541
195619
195733
195827
195931
196034
196118
196232
196321
196427
196515
196611
196735
196839
196919
197031
197135
197244
197318
197429
197526
197623
197730
197815
197922
198011
198110

All-Time Record Progression

2 new records
When White Swan Rs set new all-time records 2 all-time records were set at White Swan Rs between 31 December 1968 and 31 July 1971. Each dot is a new record. Record low maximum temperatureRecord high minimum temperature31 December 1968: Record low maximum temperature -17.8 C (0.0 F)31 July 1971: Record high minimum temperature 24.4 C (75.9 F)1970
2 all-time records were set at White Swan Rs between 31 December 1968 and 31 July 1971. Each dot is a new record.
When White Swan Rs set new all-time records
DateKindDetail
1968-12-31Record low maximum temperatureRecord low maximum temperature -17.8 C (0.0 F)
1971-07-31Record high minimum temperatureRecord high minimum temperature 24.4 C (75.9 F)

Wettest Day of Each Month

Jun: 46.2 mm (1.8 in)
Record daily precipitation for each month at White Swan Rs The wettest day on record for each calendar month at White Swan Rs. The most was 46.2 mm (1.8 in) on 11 June 1948. 0204060 Jan: 41.4 mm (1.6 in), 7 January 1948 Jan Feb: 21.6 mm (0.9 in), 9 February 1961 Feb Mar: 25.7 mm (1.0 in), 31 March 1931 Mar Apr: 27.9 mm (1.1 in), 4 April 1930 Apr May: 17.3 mm (0.7 in), 20 May 1948 May Jun: 46.2 mm (1.8 in), 11 June 1948 Jun Jul: 29.2 mm (1.1 in), 29 July 1958 Jul Aug: 31.2 mm (1.2 in), 18 August 1975 Aug Sep: 13.2 mm (0.5 in), 5 September 1937 Sep Oct: 27.9 mm (1.1 in), 21 October 1934 Oct Nov: 32.0 mm (1.3 in), 24 November 1960 Nov Dec: 34.0 mm (1.3 in), 21 December 1955 Dec
The wettest day on record for each calendar month at White Swan Rs. The most was 46.2 mm (1.8 in) on 11 June 1948.
Record daily precipitation for each month at White Swan Rs
MonthRecord daily precipitation (mm)Date
Jan41.4 mm (1.6 in)7 January 1948
Feb21.6 mm (0.9 in)9 February 1961
Mar25.7 mm (1.0 in)31 March 1931
Apr27.9 mm (1.1 in)4 April 1930
May17.3 mm (0.7 in)20 May 1948
Jun46.2 mm (1.8 in)11 June 1948
Jul29.2 mm (1.1 in)29 July 1958
Aug31.2 mm (1.2 in)18 August 1975
Sep13.2 mm (0.5 in)5 September 1937
Oct27.9 mm (1.1 in)21 October 1934
Nov32.0 mm (1.3 in)24 November 1960
Dec34.0 mm (1.3 in)21 December 1955

Period of Record Coverage

1927 to 1981
Days with data per year at White Swan Rs 54 years of record at White Swan Rs, 1927 to 1981. 26 years have data for under 90 percent of days and are left out of rankings: 1927, 1930, 1931, 1932, 1933, 1934, 1936, 1938 and others. 1927: 62 of 365 days1928: 365 of 366 days1929: 361 of 365 days1930: 293 of 365 days1931: 189 of 365 days1932: 95 of 366 days1933: 306 of 365 days1934: 312 of 365 days1935: 345 of 365 days1936: 297 of 366 days1937: 334 of 365 days1938: 326 of 365 days1939: 341 of 365 days1940: 338 of 366 days1941: 320 of 365 days1942: 353 of 365 days1943: 361 of 365 days1944: 331 of 366 days1945: 281 of 365 days1947: 317 of 365 days1948: 318 of 366 days1949: 301 of 365 days1950: 356 of 365 days1951: 256 of 365 days1952: 325 of 366 days1953: 323 of 365 days1954: 331 of 365 days1955: 312 of 365 days1956: 334 of 366 days1957: 308 of 365 days1958: 339 of 365 days1959: 344 of 365 days1960: 342 of 366 days1961: 342 of 365 days1962: 324 of 365 days1963: 322 of 365 days1964: 321 of 366 days1965: 191 of 365 days1966: 228 of 365 days1967: 347 of 365 days1968: 360 of 366 days1969: 345 of 365 days1970: 358 of 365 days1971: 338 of 365 days1972: 351 of 366 days1973: 359 of 365 days1974: 364 of 365 days1975: 365 of 365 days1976: 349 of 366 days1977: 336 of 365 days1978: 324 of 365 days1979: 356 of 365 days1980: 303 of 366 days1981: 107 of 365 days193019401950196019701980
54 years of record at White Swan Rs, 1927 to 1981. 26 years have data for under 90 percent of days and are left out of rankings: 1927, 1930, 1931, 1932, 1933, 1934, 1936, 1938 and others.
Days with data per year at White Swan Rs
YearDays with dataShare of yearComplete
19276217%No
1928365100%Yes
192936199%Yes
193029380%No
193118952%No
19329526%No
193330684%No
193431285%No
193534595%Yes
193629781%No
193733492%Yes
193832689%No
193934193%Yes
194033892%Yes
194132088%No
194235397%Yes
194336199%Yes
194433190%Yes
194528177%No
194731787%No
194831887%No
194930182%No
195035698%Yes
195125670%No
195232589%No
195332388%No
195433191%Yes
195531285%No
195633491%Yes
195730884%No
195833993%Yes
195934494%Yes
196034293%Yes
196134294%Yes
196232489%No
196332288%No
196432188%No
196519152%No
196622862%No
196734795%Yes
196836098%Yes
196934595%Yes
197035898%Yes
197133893%Yes
197235196%Yes
197335998%Yes
1974364100%Yes
1975365100%Yes
197634995%Yes
197733692%Yes
197832489%No
197935698%Yes
198030383%No
198110729%No

Latest Records

20
Latest records at White Swan Rs
DateStationRecordValueBeat old record byOld record stoodSignificance
13 July 1981White Swan Rs, USdaily low max (Tie)23.3 C (73.9 F)tie50 years5 of 100 (Routine)
7 July 1981White Swan Rs, USdaily low max20.0 C (68.0 F)1.1 C (2.0 F)10 years10 of 100 (Routine)
6 July 1981White Swan Rs, USdaily low max (Tie)21.1 C (70.0 F)tie22 years2 of 100 (Routine)
4 July 1981White Swan Rs, USdaily high min19.4 C (66.9 F)1.1 C (2.0 F)8 years9 of 100 (Routine)
3 July 1981White Swan Rs, USdaily high min16.7 C (62.1 F)0.6 C (1.1 F)38 years17 of 100 (Routine)
30 June 1981White Swan Rs, USdaily high min18.3 C (64.9 F)0.5 C (0.9 F)36 years17 of 100 (Routine)
9 June 1981White Swan Rs, USdaily rain2.5 mm (0.10 in)0.2 mm (0.01 in)8 years7 of 100 (Routine)
2 June 1981White Swan Rs, USdaily high min15.0 C (59.0 F)1.7 C (3.1 F)52 years24 of 100 (Routine)
30 April 1981White Swan Rs, USdaily high min13.9 C (57.0 F)1.1 C (2.0 F)12 years10 of 100 (Routine)
14 April 1981White Swan Rs, USdaily low max10.0 C (50.0 F)1.7 C (3.1 F)22 years14 of 100 (Routine)
13 April 1981White Swan Rs, USmonthly low min (Tie)-8.3 C (17.1 F)tie45 years7 of 100 (Routine)
10 April 1981White Swan Rs, USdaily low max8.9 C (48.0 F)1.1 C (2.0 F)8 years9 of 100 (Routine)
3 April 1981White Swan Rs, USdaily low max10.0 C (50.0 F)1.1 C (2.0 F)4 years8 of 100 (Routine)
14 March 1981White Swan Rs, USdaily high max20.6 C (69.1 F)1.7 C (3.1 F)34 years18 of 100 (Routine)
2 March 1981White Swan Rs, USdaily high max (Tie)16.7 C (62.1 F)tie12 years2 of 100 (Routine)
22 January 1981White Swan Rs, USdaily high min (Tie)4.4 C (39.9 F)tie9 years1 of 100 (Routine)
2 December 1980White Swan Rs, USdaily rain30.5 mm (1.2 in)17.3 mm (0.7 in)42 years48 of 100 (Notable)
2 December 1980White Swan Rs, USdaily snow depth12.7 cm (5.0 in)2.5 cm (1.0 in)25 years14 of 100 (Routine)
7 November 1980White Swan Rs, USdaily rain20.1 mm (0.8 in)13.5 mm (0.5 in)26 years20 of 100 (Routine)
7 November 1980White Swan Rs, USdaily high min8.3 C (46.9 F)1.6 C (2.9 F)46 years21 of 100 (Routine)

Climate Trend

15 complete years, 1928 to 1976
Annual mean temperature at White Swan Rs as warming stripes, 1928 to 1976 One stripe for each of 15 complete years at White Swan Rs, 1928 to 1976. Blue stripes are years cooler than the station's own mean of 10.1 C (50.2 F); red stripes are warmer. The coolest year was 1929, at 8.6 C (47.4 F), and the warmest was 1967, at 11.2 C (52.2 F). The strongest colour marks a difference of 1.6 C (2.9 F). 1928: 10.3 C, +0.1 C from the station mean1929: 8.6 C, -1.5 C from the station mean1942: 10.4 C, +0.3 C from the station mean1943: 9.7 C, -0.4 C from the station mean1950: 9.1 C, -1.1 C from the station mean1959: 9.6 C, -0.5 C from the station mean1961: 10.9 C, +0.8 C from the station mean1967: 11.2 C, +1.1 C from the station mean1968: 10.2 C, +0.1 C from the station mean1970: 10.6 C, +0.5 C from the station mean1972: 9.5 C, -0.6 C from the station mean1973: 10.3 C, +0.2 C from the station mean1974: 10.9 C, +0.8 C from the station mean1975: 10.2 C, +0.1 C from the station mean1976: 10.0 C, -0.1 C from the station mean1928193519401945195019551960196519701975
One stripe for each of 15 complete years at White Swan Rs, 1928 to 1976. Blue stripes are years cooler than the station's own mean of 10.1 C (50.2 F); red stripes are warmer. The coolest year was 1929, at 8.6 C (47.4 F), and the warmest was 1967, at 11.2 C (52.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at White Swan Rs as warming stripes, 1928 to 1976
YearAnnual mean temperatureDifference from the station mean
192810.3 C+0.15 C
19298.6 C-1.53 C
194210.4 C+0.34 C
19439.7 C-0.39 C
19509.1 C-1.05 C
19599.6 C-0.50 C
196110.9 C+0.84 C
196711.2 C+1.13 C
196810.2 C+0.13 C
197010.6 C+0.50 C
19729.5 C-0.56 C
197310.3 C+0.18 C
197410.9 C+0.79 C
197510.2 C+0.07 C
197610.0 C-0.07 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

1927 to 1981
Yearly extremes at White Swan Rs: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)43.9 C (111.0 F)192838.3 C (100.9 F)54
Coldest night (TNn)-34.4 C (-29.9 F)1930-17.8 C (0.0 F)54
Wettest day (Rx1day)46.2 mm (1.8 in)194822.3 mm (0.9 in)54
Wettest five days (Rx5day)87.6 mm (3.4 in)196434.1 mm (1.3 in)54
Longest dry spell (CDD)202 days197364 days54

Hottest day (TXx)

Hottest day (TXx) at White Swan Rs by year The hottest day of the year at White Swan Rs, 1927 to 1981. The record is 43.9 C (111.0 F) in 1928, marked on the chart; the median year is 38.3 C (100.9 F). 20304050193019401950196019701980Record: 43.9 C (111.0 F) in 1928
The hottest day of the year at White Swan Rs, 1927 to 1981. The record is 43.9 C (111.0 F) in 1928, marked on the chart; the median year is 38.3 C (100.9 F).
Hottest day (TXx) at White Swan Rs by year
YearHottest day (TXx)
192723.3 C (73.9 F)
192843.9 C (111.0 F)
192938.3 C (100.9 F)
193038.3 C (100.9 F)
193140.0 C (104.0 F)
193240.0 C (104.0 F)
193338.3 C (100.9 F)
193438.3 C (100.9 F)
193542.8 C (109.0 F)
193638.3 C (100.9 F)
193737.8 C (100.0 F)
193838.9 C (102.0 F)
193941.1 C (106.0 F)
194036.7 C (98.1 F)
194141.1 C (106.0 F)
194238.9 C (102.0 F)
194336.7 C (98.1 F)
194438.3 C (100.9 F)
194542.2 C (108.0 F)
194736.7 C (98.1 F)
194837.8 C (100.0 F)
194938.3 C (100.9 F)
195036.7 C (98.1 F)
195135.6 C (96.1 F)
195238.9 C (102.0 F)
195337.2 C (99.0 F)
195436.1 C (97.0 F)
195538.9 C (102.0 F)
195638.9 C (102.0 F)
195735.6 C (96.1 F)
195839.4 C (102.9 F)
195938.9 C (102.0 F)
196041.7 C (107.1 F)
196141.7 C (107.1 F)
196237.8 C (100.0 F)
196337.2 C (99.0 F)
196438.9 C (102.0 F)
196537.8 C (100.0 F)
196635.6 C (96.1 F)
196738.9 C (102.0 F)
196840.0 C (104.0 F)
196937.2 C (99.0 F)
197038.9 C (102.0 F)
197140.0 C (104.0 F)
197238.9 C (102.0 F)
197337.8 C (100.0 F)
197437.8 C (100.0 F)
197540.6 C (105.1 F)
197636.7 C (98.1 F)
197737.2 C (99.0 F)
197840.0 C (104.0 F)
197940.0 C (104.0 F)
198036.1 C (97.0 F)
198137.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at White Swan Rs by year The coldest night of the year at White Swan Rs, 1927 to 1981. The record is -34.4 C (-29.9 F) in 1930, marked on the chart; the median year is -17.8 C (0.0 F). -40-30-20-100193019401950196019701980Record: -34.4 C (-29.9 F) in 1930
The coldest night of the year at White Swan Rs, 1927 to 1981. The record is -34.4 C (-29.9 F) in 1930, marked on the chart; the median year is -17.8 C (0.0 F).
Coldest night (TNn) at White Swan Rs by year
YearColdest night (TNn)
1927-16.1 C (3.0 F)
1928-14.4 C (6.1 F)
1929-28.3 C (-18.9 F)
1930-34.4 C (-29.9 F)
1931-6.1 C (21.0 F)
1932-20.6 C (-5.1 F)
1933-16.1 C (3.0 F)
1934-6.7 C (19.9 F)
1935-24.4 C (-11.9 F)
1936-21.1 C (-6.0 F)
1937-26.1 C (-15.0 F)
1938-12.8 C (9.0 F)
1939-13.3 C (8.1 F)
1940-14.4 C (6.1 F)
1941-9.4 C (15.1 F)
1942-18.9 C (-2.0 F)
1943-24.4 C (-11.9 F)
1944-16.1 C (3.0 F)
1945-12.2 C (10.0 F)
1947-13.9 C (7.0 F)
1948-20.0 C (-4.0 F)
1949-22.2 C (-8.0 F)
1950-31.1 C (-24.0 F)
1951-17.8 C (0.0 F)
1952-16.7 C (1.9 F)
1953-7.8 C (18.0 F)
1954-26.7 C (-16.1 F)
1955-17.2 C (1.0 F)
1956-25.0 C (-13.0 F)
1957-30.6 C (-23.1 F)
1958-13.3 C (8.1 F)
1959-18.3 C (-0.9 F)
1960-20.0 C (-4.0 F)
1961-14.4 C (6.1 F)
1962-18.3 C (-0.9 F)
1963-20.6 C (-5.1 F)
1964-28.9 C (-20.0 F)
1965-10.6 C (12.9 F)
1966-10.0 C (14.0 F)
1967-15.0 C (5.0 F)
1968-26.1 C (-15.0 F)
1969-23.3 C (-9.9 F)
1970-15.6 C (3.9 F)
1971-15.0 C (5.0 F)
1972-23.9 C (-11.0 F)
1973-16.1 C (3.0 F)
1974-25.6 C (-14.1 F)
1975-13.3 C (8.1 F)
1976-12.8 C (9.0 F)
1977-17.8 C (0.0 F)
1978-18.3 C (-0.9 F)
1979-22.8 C (-9.0 F)
1980-22.2 C (-8.0 F)
1981-8.3 C (17.1 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at White Swan Rs by year The wettest day of the year at White Swan Rs, 1927 to 1981. The record is 46.2 mm (1.8 in) in 1948, marked on the chart; the median year is 22.3 mm (0.9 in). 01020304050193019401950196019701980Record: 46.2 mm (1.8 in) in 1948
The wettest day of the year at White Swan Rs, 1927 to 1981. The record is 46.2 mm (1.8 in) in 1948, marked on the chart; the median year is 22.3 mm (0.9 in).
Wettest day (Rx1day) at White Swan Rs by year
YearWettest day (Rx1day)
192726.9 mm (1.1 in)
192823.9 mm (0.9 in)
192916.3 mm (0.6 in)
193027.9 mm (1.1 in)
193125.7 mm (1.0 in)
193233.0 mm (1.3 in)
193322.9 mm (0.9 in)
193427.9 mm (1.1 in)
193516.5 mm (0.6 in)
193623.1 mm (0.9 in)
193719.1 mm (0.8 in)
193813.2 mm (0.5 in)
193918.3 mm (0.7 in)
194023.9 mm (0.9 in)
194115.2 mm (0.6 in)
194224.4 mm (1.0 in)
194317.8 mm (0.7 in)
194418.5 mm (0.7 in)
194525.4 mm (1.0 in)
194720.1 mm (0.8 in)
194846.2 mm (1.8 in)
194923.6 mm (0.9 in)
195013.7 mm (0.5 in)
195121.6 mm (0.9 in)
195211.4 mm (0.4 in)
195317.8 mm (0.7 in)
195430.5 mm (1.2 in)
195534.0 mm (1.3 in)
195625.9 mm (1.0 in)
195715.5 mm (0.6 in)
195829.2 mm (1.1 in)
195917.8 mm (0.7 in)
196032.0 mm (1.3 in)
196121.6 mm (0.9 in)
196213.2 mm (0.5 in)
196324.9 mm (1.0 in)
196432.0 mm (1.3 in)
19658.6 mm (0.34 in)
196612.7 mm (0.5 in)
196712.2 mm (0.5 in)
196819.6 mm (0.8 in)
196917.3 mm (0.7 in)
197029.2 mm (1.1 in)
197123.4 mm (0.9 in)
197211.9 mm (0.5 in)
197325.9 mm (1.0 in)
197429.0 mm (1.1 in)
197531.2 mm (1.2 in)
19769.7 mm (0.38 in)
197729.7 mm (1.2 in)
197816.5 mm (0.6 in)
197916.0 mm (0.6 in)
198030.5 mm (1.2 in)
19817.6 mm (0.30 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at White Swan Rs by year The wettest five days of the year at White Swan Rs, 1927 to 1981. The record is 87.6 mm (3.4 in) in 1964, marked on the chart; the median year is 34.1 mm (1.3 in). 020406080100193019401950196019701980Record: 87.6 mm (3.4 in) in 1964
The wettest five days of the year at White Swan Rs, 1927 to 1981. The record is 87.6 mm (3.4 in) in 1964, marked on the chart; the median year is 34.1 mm (1.3 in).
Wettest five days (Rx5day) at White Swan Rs by year
YearWettest five days (Rx5day)
192733.8 mm (1.3 in)
192850.4 mm (2.0 in)
192924.8 mm (1.0 in)
193024.3 mm (1.0 in)
193153.3 mm (2.1 in)
193233.0 mm (1.3 in)
193330.5 mm (1.2 in)
193435.5 mm (1.4 in)
193519.5 mm (0.8 in)
193630.4 mm (1.2 in)
193741.9 mm (1.6 in)
193822.9 mm (0.9 in)
193928.6 mm (1.1 in)
194044.7 mm (1.8 in)
194132.2 mm (1.3 in)
194238.1 mm (1.5 in)
194335.0 mm (1.4 in)
194420.5 mm (0.8 in)
194528.7 mm (1.1 in)
194725.2 mm (1.0 in)
194849.3 mm (1.9 in)
194936.6 mm (1.4 in)
195021.0 mm (0.8 in)
195149.6 mm (2.0 in)
195220.5 mm (0.8 in)
195335.5 mm (1.4 in)
195435.9 mm (1.4 in)
195564.5 mm (2.5 in)
195648.5 mm (1.9 in)
195739.1 mm (1.5 in)
195829.2 mm (1.1 in)
195929.0 mm (1.1 in)
196040.1 mm (1.6 in)
196129.2 mm (1.1 in)
196232.3 mm (1.3 in)
196347.3 mm (1.9 in)
196487.6 mm (3.4 in)
19658.6 mm (0.34 in)
196645.9 mm (1.8 in)
196717.5 mm (0.7 in)
196834.3 mm (1.4 in)
196937.8 mm (1.5 in)
197061.5 mm (2.4 in)
197145.8 mm (1.8 in)
197225.2 mm (1.0 in)
197361.7 mm (2.4 in)
197463.1 mm (2.5 in)
197533.5 mm (1.3 in)
197621.1 mm (0.8 in)
197758.3 mm (2.3 in)
197829.0 mm (1.1 in)
197922.9 mm (0.9 in)
198057.4 mm (2.3 in)
198113.1 mm (0.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at White Swan Rs by year The longest dry spell of the year at White Swan Rs, 1927 to 1981. The record is 202 days in 1973, marked on the chart; the median year is 64 days. 050100150200250193019401950196019701980Record: 202 days in 1973
The longest dry spell of the year at White Swan Rs, 1927 to 1981. The record is 202 days in 1973, marked on the chart; the median year is 64 days.
Longest dry spell (CDD) at White Swan Rs by year
YearLongest dry spell (CDD)
192733 days
192852 days
192985 days
193062 days
193173 days
193272 days
193375 days
1934136 days
193537 days
193629 days
193729 days
193831 days
193926 days
194054 days
194132 days
1942128 days
194374 days
194458 days
1945120 days
194740 days
194833 days
1949119 days
195075 days
195156 days
195299 days
195373 days
195457 days
195550 days
195644 days
195762 days
195860 days
195977 days
196069 days
1961113 days
196272 days
196358 days
196470 days
196552 days
196658 days
1967100 days
196855 days
196979 days
197083 days
197174 days
197236 days
1973202 days
1974108 days
197542 days
197698 days
197778 days
197869 days
197958 days
198066 days
198134 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.

Rainfall Return Levels

34 years, 1933 to 1980

A day with at least 21.6 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 43.5 mm (1.7 in) of rain is expected about once in 100 years.

Rainfall return levels at White Swan Rs: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years21.6 mm (0.9 in)
5 years28.8 mm (1.1 in)
10 years33.0 mm (1.3 in)
25 years37.7 mm (1.5 in)
50 years40.7 mm (1.6 in)Longer than the 34 years of record
100 years43.5 mm (1.7 in)Longer than the 34 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, 34 years of values from 1933 to 1980.

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: 46.2 mm (1.8 in) in 1948; 32.0 mm (1.3 in) in 1960; 32.0 mm (1.3 in) in 1964.

Download the Data

  • Data for White Swan Rs standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for White Swan Rs 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).