Built 2026-10-17 (17 October 2026)

Kemano Weather Records (CA001064020)

Record envelope, standing records and threshold days for Kemano (CA001064020), British Columbia, Canada, with 74 years of record.

Key Facts for Kemano

  • Kemano (CA001064020) is a weather station in British Columbia, Canada at 53.57 latitude and -127.95 longitude, 87 m (285 ft) above sea level.
  • The station reports from 1951 to 2024, 74 years of record.
  • 1,464 records set at Kemano still stand.
  • Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
  • Kemano set a daily record high maximum temperature of 10.5 C (50.9 F) on 18 November 1983.

About the Station

  • Location: British Columbia, Canada, 53.57 latitude, -127.95 longitude.
  • Elevation: 87 m (285 ft).
  • Period of record: 1951 to 2024, 74 years.
  • Eligible elements: tmax, tmin, prcp, snow.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Kemano, with 2026 drawn through them The band shows the record high and record low for each calendar day at Kemano. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Kemano. 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 Kemano, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan12.2 C (54.0 F)-24.4 C (-11.9 F)n/an/a
Feb9.5 C (49.1 F)-22.8 C (-9.0 F)n/an/a
Mar18.3 C (64.9 F)-18.9 C (-2.0 F)n/an/a
Apr24.4 C (75.9 F)-7.8 C (18.0 F)n/an/a
May33.3 C (91.9 F)-3.3 C (26.1 F)n/an/a
Jun35.6 C (96.1 F)1.7 C (35.1 F)n/an/a
Jul37.8 C (100.0 F)2.2 C (36.0 F)n/an/a
Aug35.0 C (95.0 F)-0.6 C (30.9 F)n/an/a
Sep33.9 C (93.0 F)-1.1 C (30.0 F)n/an/a
Oct22.2 C (72.0 F)-3.9 C (25.0 F)n/an/a
Nov15.0 C (59.0 F)-15.0 C (5.0 F)n/an/a
Dec11.5 C (52.7 F)-21.1 C (-6.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Kemano by the year they were set 1,464 records at Kemano still stand. 1958 holds the most, with 99. 02550751001951: 171952: 541953: 311954: 611955: 891956: 561957: 681958: 991959: 331960: 301961: 481962: 301963: 581964: 451965: 431966: 301967: 411968: 291969: 691970: 461971: 301972: 381973: 501974: 451975: 331976: 281977: 351978: 141979: 271980: 451981: 601982: 361983: 46195119551959196319671971197519791983
1,464 records at Kemano still stand. 1958 holds the most, with 99.
Standing records at Kemano by the year they were set
Year setStanding records
195117
195254
195331
195461
195589
195656
195768
195899
195933
196030
196148
196230
196358
196445
196543
196630
196741
196829
196969
197046
197130
197238
197350
197445
197533
197628
197735
197814
197927
198045
198160
198236
198346

Wettest Day of Each Month

Dec: 126.2 mm (5.0 in)
Record daily precipitation for each month at Kemano The wettest day on record for each calendar month at Kemano. The most was 126.2 mm (5.0 in) on 12 December 1952. 050100150 Jan: 104.1 mm (4.1 in), 11 January 1968 Jan Feb: 89.7 mm (3.5 in), 18 February 1972 Feb Mar: 78.0 mm (3.1 in), 29 March 1966 Mar Apr: 81.0 mm (3.2 in), 10 April 1974 Apr May: 64.0 mm (2.5 in), 12 May 1972 May Jun: 36.6 mm (1.4 in), 4 June 1979 Jun Jul: 53.0 mm (2.1 in), 4 July 1980 Jul Aug: 72.4 mm (2.9 in), 6 August 1978 Aug Sep: 101.6 mm (4.0 in), 17 September 1953 Sep Oct: 118.4 mm (4.7 in), 26 October 1976 Oct Nov: 108.0 mm (4.3 in), 18 November 1962 Nov Dec: 126.2 mm (5.0 in), 12 December 1952 Dec
The wettest day on record for each calendar month at Kemano. The most was 126.2 mm (5.0 in) on 12 December 1952.
Record daily precipitation for each month at Kemano
MonthRecord daily precipitation (mm)Date
Jan104.1 mm (4.1 in)11 January 1968
Feb89.7 mm (3.5 in)18 February 1972
Mar78.0 mm (3.1 in)29 March 1966
Apr81.0 mm (3.2 in)10 April 1974
May64.0 mm (2.5 in)12 May 1972
Jun36.6 mm (1.4 in)4 June 1979
Jul53.0 mm (2.1 in)4 July 1980
Aug72.4 mm (2.9 in)6 August 1978
Sep101.6 mm (4.0 in)17 September 1953
Oct118.4 mm (4.7 in)26 October 1976
Nov108.0 mm (4.3 in)18 November 1962
Dec126.2 mm (5.0 in)12 December 1952

Period of Record Coverage

1951 to 1983
Days with data per year at Kemano 33 years of record at Kemano, 1951 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1951, 1954, 1972. 1951: 125 of 365 days1952: 363 of 366 days1953: 365 of 365 days1954: 296 of 365 days1955: 364 of 365 days1956: 366 of 366 days1957: 363 of 365 days1958: 362 of 365 days1959: 351 of 365 days1960: 365 of 366 days1961: 365 of 365 days1962: 364 of 365 days1963: 364 of 365 days1964: 364 of 366 days1965: 364 of 365 days1966: 358 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 364 of 365 days1971: 365 of 365 days1972: 282 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 363 of 365 days1976: 366 of 366 days1977: 363 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 361 of 366 days1981: 363 of 365 days1982: 352 of 365 days1983: 365 of 365 days195519601965197019751980
33 years of record at Kemano, 1951 to 1983. 3 years have data for under 90 percent of days and are left out of rankings: 1951, 1954, 1972.
Days with data per year at Kemano
YearDays with dataShare of yearComplete
195112534%No
195236399%Yes
1953365100%Yes
195429681%No
1955364100%Yes
1956366100%Yes
195736399%Yes
195836299%Yes
195935196%Yes
1960365100%Yes
1961365100%Yes
1962364100%Yes
1963364100%Yes
196436499%Yes
1965364100%Yes
196635898%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970364100%Yes
1971365100%Yes
197228277%No
1973365100%Yes
1974365100%Yes
197536399%Yes
1976366100%Yes
197736399%Yes
1978365100%Yes
1979365100%Yes
198036199%Yes
198136399%Yes
198235296%Yes
1983365100%Yes

Latest Records

20
Latest records at Kemano
DateStationRecordValueBeat old record byOld record stoodSignificance
18 November 1983Kemano, CAdaily high max10.5 C (50.9 F)2.2 C (4.0 F)16 years12 of 100 (Routine)
14 November 1983Kemano, CAdaily high max8.5 C (47.3 F)0.7 C (1.3 F)29 years12 of 100 (Routine)
15 October 1983Kemano, CAdaily low min-1.5 C (29.3 F)0.4 C (0.7 F)10 years7 of 100 (Routine)
18 September 1983Kemano, CAdaily low min2.5 C (36.5 F)0.3 C (0.5 F)4 years5 of 100 (Routine)
15 September 1983Kemano, CAdaily low max11.0 C (51.8 F)0.1 C (0.2 F)8 years5 of 100 (Routine)
12 September 1983Kemano, CAdaily rain19.8 mm (0.8 in)3.8 mm (0.15 in)14 years10 of 100 (Routine)
9 September 1983Kemano, CAdaily low min3.0 C (37.4 F)0.9 C (1.6 F)18 years11 of 100 (Routine)
6 September 1983Kemano, CAdaily low max12.5 C (54.5 F)0.3 C (0.5 F)24 years10 of 100 (Routine)
27 August 1983Kemano, CAdaily rain11.4 mm (0.4 in)3.0 mm (0.12 in)8 years8 of 100 (Routine)
17 August 1983Kemano, CAdaily high min13.0 C (55.4 F)0.8 C (1.4 F)29 years14 of 100 (Routine)
13 July 1983Kemano, CAdaily low max15.5 C (59.9 F)0.1 C (0.2 F)29 years11 of 100 (Routine)
12 July 1983Kemano, CAdaily rain9.0 mm (0.35 in)5.7 mm (0.22 in)29 years19 of 100 (Routine)
12 July 1983Kemano, CAdaily low max (Tie)15.0 C (59.0 F)tie13 years1 of 100 (Routine)
10 July 1983Kemano, CAdaily rain15.4 mm (0.6 in)4.0 mm (0.16 in)12 years12 of 100 (Routine)
10 July 1983Kemano, CAdaily low max13.0 C (55.4 F)0.9 C (1.6 F)20 years10 of 100 (Routine)
28 June 1983Kemano, CAdaily high min12.0 C (53.6 F)0.9 C (1.6 F)24 years13 of 100 (Routine)
23 June 1983Kemano, CAdaily rain13.0 mm (0.5 in)4.6 mm (0.18 in)25 years18 of 100 (Routine)
9 June 1983Kemano, CAdaily low max13.0 C (55.4 F)0.3 C (0.5 F)26 years11 of 100 (Routine)
5 June 1983Kemano, CAdaily rain26.0 mm (1.0 in)18.9 mm (0.7 in)4 years40 of 100 (Notable)
5 June 1983Kemano, CAdaily low max10.0 C (50.0 F)2.0 C (3.6 F)4 years8 of 100 (Routine)

Climate Trend

30 complete years, 1952 to 1983
Annual mean temperature at Kemano as warming stripes, 1952 to 1983 One stripe for each of 30 complete years at Kemano, 1952 to 1983. Blue stripes are years cooler than the station's own mean of 6.5 C (43.8 F); red stripes are warmer. The coolest year was 1955, at 5.0 C (41.0 F), and the warmest was 1958, at 8.5 C (47.2 F). The strongest colour marks a difference of 2.0 C (3.6 F). 1952: 6.5 C, -0.1 C from the station mean1953: 7.1 C, +0.6 C from the station mean1955: 5.0 C, -1.5 C from the station mean1956: 6.0 C, -0.5 C from the station mean1957: 6.7 C, +0.2 C from the station mean1958: 8.5 C, +1.9 C from the station mean1959: 6.5 C, 0.0 C from the station mean1960: 6.8 C, +0.3 C from the station mean1961: 7.6 C, +1.1 C from the station mean1962: 7.0 C, +0.4 C from the station mean1963: 7.6 C, +1.1 C from the station mean1964: 5.7 C, -0.9 C from the station mean1965: 6.7 C, +0.2 C from the station mean1966: 6.0 C, -0.5 C from the station mean1967: 7.2 C, +0.7 C from the station mean1968: 6.3 C, -0.2 C from the station mean1969: 6.8 C, +0.3 C from the station mean1970: 6.2 C, -0.3 C from the station mean1971: 5.8 C, -0.7 C from the station mean1973: 5.3 C, -1.3 C from the station mean1974: 5.9 C, -0.7 C from the station mean1975: 5.5 C, -1.1 C from the station mean1976: 5.8 C, -0.7 C from the station mean1977: 6.5 C, 0.0 C from the station mean1978: 6.9 C, +0.3 C from the station mean1979: 6.5 C, 0.0 C from the station mean1980: 6.9 C, +0.3 C from the station mean1981: 7.7 C, +1.2 C from the station mean1982: 5.8 C, -0.7 C from the station mean1983: 7.4 C, +0.8 C from the station mean1952195519601965197019751980
One stripe for each of 30 complete years at Kemano, 1952 to 1983. Blue stripes are years cooler than the station's own mean of 6.5 C (43.8 F); red stripes are warmer. The coolest year was 1955, at 5.0 C (41.0 F), and the warmest was 1958, at 8.5 C (47.2 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Kemano as warming stripes, 1952 to 1983
YearAnnual mean temperatureDifference from the station mean
19526.5 C-0.09 C
19537.1 C+0.56 C
19555.0 C-1.53 C
19566.0 C-0.50 C
19576.7 C+0.15 C
19588.5 C+1.91 C
19596.5 C-0.02 C
19606.8 C+0.25 C
19617.6 C+1.08 C
19627.0 C+0.41 C
19637.6 C+1.09 C
19645.7 C-0.87 C
19656.7 C+0.20 C
19666.0 C-0.52 C
19677.2 C+0.67 C
19686.3 C-0.21 C
19696.8 C+0.27 C
19706.2 C-0.34 C
19715.8 C-0.72 C
19735.3 C-1.27 C
19745.9 C-0.66 C
19755.5 C-1.09 C
19765.8 C-0.73 C
19776.5 C-0.01 C
19786.9 C+0.31 C
19796.5 C+0.00 C
19806.9 C+0.31 C
19817.7 C+1.17 C
19825.8 C-0.75 C
19837.4 C+0.83 C

The fitted trend in annual mean temperature here over 1952 to 1983 is -0.1 C (-0.4 to 0.3) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.7 to 0.5) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kemano
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.1 C (-0.4 to 0.3) per decade-0.1 F (-0.7 to 0.5) per decade1952 to 198330Not clearly different from zero
Mean daily maximum0.01 C (-0.36 to 0.38) per decade0.02 F (-0.65 to 0.69) per decade1952 to 198330Not clearly different from zero
Mean daily minimum-0.2 C (-0.5 to 0.2) per decade-0.3 F (-0.9 to 0.3) per decade1952 to 198330Not 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

1951 to 1983
Yearly extremes at Kemano: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)195832.2 C (90.0 F)33
Coldest night (TNn)-24.4 C (-11.9 F)1974-19.4 C (-2.9 F)33
Wettest day (Rx1day)126.2 mm (5.0 in)195278.0 mm (3.1 in)33
Wettest five days (Rx5day)256.0 mm (10.1 in)1952178.6 mm (7.0 in)33
Longest dry spell (CDD)43 days195220 days33

Hottest day (TXx)

Hottest day (TXx) at Kemano by year The hottest day of the year at Kemano, 1951 to 1983. The record is 37.8 C (100.0 F) in 1958, marked on the chart; the median year is 32.2 C (90.0 F). 25303540196019701980Record: 37.8 C (100.0 F) in 1958
The hottest day of the year at Kemano, 1951 to 1983. The record is 37.8 C (100.0 F) in 1958, marked on the chart; the median year is 32.2 C (90.0 F).
Hottest day (TXx) at Kemano by year
YearHottest day (TXx)
195129.4 C (84.9 F)
195234.4 C (93.9 F)
195332.2 C (90.0 F)
195427.2 C (81.0 F)
195534.4 C (93.9 F)
195633.9 C (93.0 F)
195730.0 C (86.0 F)
195837.8 C (100.0 F)
195931.1 C (88.0 F)
196034.4 C (93.9 F)
196135.6 C (96.1 F)
196231.7 C (89.1 F)
196332.2 C (90.0 F)
196428.9 C (84.0 F)
196533.3 C (91.9 F)
196631.1 C (88.0 F)
196731.1 C (88.0 F)
196832.2 C (90.0 F)
196934.4 C (93.9 F)
197028.3 C (82.9 F)
197135.6 C (96.1 F)
197226.1 C (79.0 F)
197329.4 C (84.9 F)
197433.9 C (93.0 F)
197533.3 C (91.9 F)
197627.8 C (82.0 F)
197734.4 C (93.9 F)
197831.7 C (89.1 F)
197931.0 C (87.8 F)
198031.5 C (88.7 F)
198135.0 C (95.0 F)
198234.0 C (93.2 F)
198332.5 C (90.5 F)

Coldest night (TNn)

Coldest night (TNn) at Kemano by year The coldest night of the year at Kemano, 1951 to 1983. The record is -24.4 C (-11.9 F) in 1974, marked on the chart; the median year is -19.4 C (-2.9 F). -25-20-15-10196019701980Record: -24.4 C (-11.9 F) in 1974
The coldest night of the year at Kemano, 1951 to 1983. The record is -24.4 C (-11.9 F) in 1974, marked on the chart; the median year is -19.4 C (-2.9 F).
Coldest night (TNn) at Kemano by year
YearColdest night (TNn)
1951-20.0 C (-4.0 F)
1952-20.0 C (-4.0 F)
1953-22.2 C (-8.0 F)
1954-18.3 C (-0.9 F)
1955-20.6 C (-5.1 F)
1956-22.8 C (-9.0 F)
1957-19.4 C (-2.9 F)
1958-15.6 C (3.9 F)
1959-16.1 C (3.0 F)
1960-17.8 C (0.0 F)
1961-11.7 C (10.9 F)
1962-15.6 C (3.9 F)
1963-15.6 C (3.9 F)
1964-20.6 C (-5.1 F)
1965-22.2 C (-8.0 F)
1966-19.4 C (-2.9 F)
1967-11.7 C (10.9 F)
1968-20.6 C (-5.1 F)
1969-23.3 C (-9.9 F)
1970-21.1 C (-6.0 F)
1971-21.1 C (-6.0 F)
1972-17.8 C (0.0 F)
1973-16.7 C (1.9 F)
1974-24.4 C (-11.9 F)
1975-20.0 C (-4.0 F)
1976-17.2 C (1.0 F)
1977-19.4 C (-2.9 F)
1978-19.5 C (-3.1 F)
1979-19.0 C (-2.2 F)
1980-17.5 C (0.5 F)
1981-16.0 C (3.2 F)
1982-21.0 C (-5.8 F)
1983-16.0 C (3.2 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Kemano by year The wettest day of the year at Kemano, 1951 to 1983. The record is 126.2 mm (5.0 in) in 1952, marked on the chart; the median year is 78.0 mm (3.1 in). 255075100125150196019701980Record: 126.2 mm (5.0 in) in 1952
The wettest day of the year at Kemano, 1951 to 1983. The record is 126.2 mm (5.0 in) in 1952, marked on the chart; the median year is 78.0 mm (3.1 in).
Wettest day (Rx1day) at Kemano by year
YearWettest day (Rx1day)
195159.4 mm (2.3 in)
1952126.2 mm (5.0 in)
1953101.6 mm (4.0 in)
195461.0 mm (2.4 in)
195551.3 mm (2.0 in)
195681.3 mm (3.2 in)
195797.8 mm (3.9 in)
195888.9 mm (3.5 in)
195974.2 mm (2.9 in)
196039.4 mm (1.6 in)
196151.3 mm (2.0 in)
1962108.0 mm (4.3 in)
196386.4 mm (3.4 in)
196467.1 mm (2.6 in)
196575.7 mm (3.0 in)
196678.0 mm (3.1 in)
196752.8 mm (2.1 in)
1968104.1 mm (4.1 in)
196957.9 mm (2.3 in)
197051.8 mm (2.0 in)
197180.8 mm (3.2 in)
197289.7 mm (3.5 in)
197385.6 mm (3.4 in)
1974110.5 mm (4.4 in)
197587.1 mm (3.4 in)
1976118.4 mm (4.7 in)
197778.2 mm (3.1 in)
1978108.2 mm (4.3 in)
197972.9 mm (2.9 in)
198068.0 mm (2.7 in)
198163.5 mm (2.5 in)
198260.0 mm (2.4 in)
198344.0 mm (1.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Kemano by year The wettest five days of the year at Kemano, 1951 to 1983. The record is 256.0 mm (10.1 in) in 1952, marked on the chart; the median year is 178.6 mm (7.0 in). 50100150200250300196019701980Record: 256.0 mm (10.1 in) in 1952
The wettest five days of the year at Kemano, 1951 to 1983. The record is 256.0 mm (10.1 in) in 1952, marked on the chart; the median year is 178.6 mm (7.0 in).
Wettest five days (Rx5day) at Kemano by year
YearWettest five days (Rx5day)
1951118.3 mm (4.7 in)
1952256.0 mm (10.1 in)
1953210.8 mm (8.3 in)
1954178.6 mm (7.0 in)
1955113.8 mm (4.5 in)
1956174.0 mm (6.9 in)
1957137.9 mm (5.4 in)
1958177.3 mm (7.0 in)
1959235.0 mm (9.3 in)
1960112.0 mm (4.4 in)
1961118.5 mm (4.7 in)
1962237.6 mm (9.4 in)
1963219.4 mm (8.6 in)
1964188.3 mm (7.4 in)
1965210.8 mm (8.3 in)
1966157.7 mm (6.2 in)
1967187.2 mm (7.4 in)
1968209.1 mm (8.2 in)
1969153.7 mm (6.1 in)
197093.5 mm (3.7 in)
1971204.5 mm (8.1 in)
1972133.9 mm (5.3 in)
1973226.3 mm (8.9 in)
1974210.8 mm (8.3 in)
1975226.5 mm (8.9 in)
1976200.0 mm (7.9 in)
1977230.3 mm (9.1 in)
1978226.1 mm (8.9 in)
1979157.9 mm (6.2 in)
1980150.0 mm (5.9 in)
1981167.9 mm (6.6 in)
1982150.0 mm (5.9 in)
1983133.4 mm (5.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Kemano by year The longest dry spell of the year at Kemano, 1951 to 1983. The record is 43 days in 1952, marked on the chart; the median year is 20 days. 1020304050196019701980Record: 43 days in 1952
The longest dry spell of the year at Kemano, 1951 to 1983. The record is 43 days in 1952, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Kemano by year
YearLongest dry spell (CDD)
195112 days
195243 days
195325 days
195414 days
195513 days
195617 days
195723 days
195824 days
195922 days
196022 days
196126 days
196219 days
196321 days
196412 days
196520 days
196613 days
196716 days
196820 days
196921 days
197012 days
197119 days
197213 days
197320 days
197430 days
197520 days
197611 days
197721 days
197820 days
197918 days
198015 days
198124 days
198232 days
198315 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

30 years with a frost

Across 30 years with a frost, the median last spring frost at Kemano falls on 1 May and the median first autumn frost on 21 October, which leaves a median of 174 days between them.

Fitted over all years, the growing season changes by -2.9 days per decade at this station.

Frost dates and growing season at Kemano
MeasureMedian, all yearsEarliest periodRecent period (1952 to 1983)Recent against earliestFitted trend
Last spring frost1 Mayn/a1 Mayn/a-0.4 days per decade
First autumn frost21 Octobern/a21 Octobern/a-3.4 days per decade
Growing days174 daysn/a174 daysn/a-2.9 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

31 years, 1952 to 1983

A day with at least 78.3 mm (3.1 in) of rain is expected about once in 2 years. A day with at least 136.0 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Kemano: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years78.3 mm (3.1 in)
5 years99.2 mm (3.9 in)
10 years110.4 mm (4.3 in)
25 years122.3 mm (4.8 in)
50 years129.7 mm (5.1 in)Longer than the 31 years of record
100 years136.0 mm (5.4 in)Longer than the 31 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, 31 years of values from 1952 to 1983.

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: 126.2 mm (5.0 in) in 1952; 118.4 mm (4.7 in) in 1976; 110.5 mm (4.4 in) in 1974.

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  • Data for Kemano standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Kemano 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 (2026-10-16).