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Built 2026-10-17 (17 October 2026)

Sewall Masset Inlet Weather Records (CA00105PA91)

Record envelope, standing records and threshold days for Sewall Masset Inlet (CA00105PA91), British Columbia, Canada, with 42 years of record.

Key Facts for Sewall Masset Inlet

  • Sewall Masset Inlet (CA00105PA91) is a weather station in British Columbia, Canada at 53.77 latitude and -132.30 longitude, 3 m (10 ft) above sea level.
  • The station reports from 1974 to 2015, 42 years of record.
  • 1,464 records set at Sewall Masset Inlet still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: British Columbia, Canada, 53.77 latitude, -132.30 longitude.
  • Elevation: 3 m (10 ft).
  • Period of record: 1974 to 2015, 42 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Sewall Masset Inlet, with 2026 drawn through them The band shows the record high and record low for each calendar day at Sewall Masset Inlet. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -20-10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Sewall Masset Inlet. 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 Sewall Masset Inlet, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan11.7 C (53.1 F)-12.2 C (10.0 F)n/an/a
Feb12.2 C (54.0 F)-11.1 C (12.0 F)n/an/a
Mar15.6 C (60.1 F)-10.6 C (12.9 F)n/an/a
Apr21.1 C (70.0 F)-2.5 C (27.5 F)n/an/a
May25.0 C (77.0 F)-1.1 C (30.0 F)n/an/a
Jun26.5 C (79.7 F)1.5 C (34.7 F)n/an/a
Jul29.5 C (85.1 F)4.5 C (40.1 F)n/an/a
Aug32.2 C (90.0 F)5.0 C (41.0 F)n/an/a
Sep26.1 C (79.0 F)2.0 C (35.6 F)n/an/a
Oct18.0 C (64.4 F)-1.7 C (28.9 F)n/an/a
Nov14.0 C (57.2 F)-9.4 C (15.1 F)n/an/a
Dec11.5 C (52.7 F)-13.3 C (8.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Sewall Masset Inlet by the year they were set 1,464 records at Sewall Masset Inlet still stand. 1975 holds the most, with 213. 01002003001974: 781975: 2131976: 1611977: 1411978: 1271979: 1351980: 1711981: 1811982: 1351983: 1221974197519761977197819791980198119821983
1,464 records at Sewall Masset Inlet still stand. 1975 holds the most, with 213.
Standing records at Sewall Masset Inlet by the year they were set
Year setStanding records
197478
1975213
1976161
1977141
1978127
1979135
1980171
1981181
1982135
1983122

Wettest Day of Each Month

Oct: 62.7 mm (2.5 in)
Record daily precipitation for each month at Sewall Masset Inlet The wettest day on record for each calendar month at Sewall Masset Inlet. The most was 62.7 mm (2.5 in) on 8 October 1974. 020406080 Jan: 52.1 mm (2.1 in), 11 January 1980 Jan Feb: 35.4 mm (1.4 in), 8 February 1983 Feb Mar: 25.4 mm (1.0 in), 3 March 1978 Mar Apr: 30.2 mm (1.2 in), 11 April 1977 Apr May: 15.0 mm (0.6 in), 31 May 1981 May Jun: 25.9 mm (1.0 in), 20 June 1977 Jun Jul: 26.8 mm (1.1 in), 30 July 1983 Jul Aug: 25.9 mm (1.0 in), 31 August 1979 Aug Sep: 51.3 mm (2.0 in), 29 September 1978 Sep Oct: 62.7 mm (2.5 in), 8 October 1974 Oct Nov: 46.5 mm (1.8 in), 2 November 1976 Nov Dec: 39.9 mm (1.6 in), 26 December 1979 Dec
The wettest day on record for each calendar month at Sewall Masset Inlet. The most was 62.7 mm (2.5 in) on 8 October 1974.
Record daily precipitation for each month at Sewall Masset Inlet
MonthRecord daily precipitation (mm)Date
Jan52.1 mm (2.1 in)11 January 1980
Feb35.4 mm (1.4 in)8 February 1983
Mar25.4 mm (1.0 in)3 March 1978
Apr30.2 mm (1.2 in)11 April 1977
May15.0 mm (0.6 in)31 May 1981
Jun25.9 mm (1.0 in)20 June 1977
Jul26.8 mm (1.1 in)30 July 1983
Aug25.9 mm (1.0 in)31 August 1979
Sep51.3 mm (2.0 in)29 September 1978
Oct62.7 mm (2.5 in)8 October 1974
Nov46.5 mm (1.8 in)2 November 1976
Dec39.9 mm (1.6 in)26 December 1979

Period of Record Coverage

1974 to 1983
Days with data per year at Sewall Masset Inlet 10 years of record at Sewall Masset Inlet, 1974 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1974. 1974: 182 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days19751980
10 years of record at Sewall Masset Inlet, 1974 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1974.
Days with data per year at Sewall Masset Inlet
YearDays with dataShare of yearComplete
197418250%No
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes

Latest Records

0

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

Extremes by Year

1974 to 1983
Yearly extremes at Sewall Masset Inlet: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)32.2 C (90.0 F)197728.5 C (83.2 F)10
Coldest night (TNn)-13.3 C (8.1 F)1977-10.3 C (13.5 F)10
Wettest day (Rx1day)62.7 mm (2.5 in)197442.8 mm (1.7 in)10
Wettest five days (Rx5day)139.9 mm (5.5 in)198089.6 mm (3.5 in)10
Longest dry spell (CDD)21 days197714 days10

Hottest day (TXx)

Hottest day (TXx) at Sewall Masset Inlet by year The hottest day of the year at Sewall Masset Inlet, 1974 to 1983. The record is 32.2 C (90.0 F) in 1977, marked on the chart; the median year is 28.5 C (83.2 F). 24262830323419751980Record: 32.2 C (90.0 F) in 1977
The hottest day of the year at Sewall Masset Inlet, 1974 to 1983. The record is 32.2 C (90.0 F) in 1977, marked on the chart; the median year is 28.5 C (83.2 F).
Hottest day (TXx) at Sewall Masset Inlet by year
YearHottest day (TXx)
197429.4 C (84.9 F)
197528.9 C (84.0 F)
197627.8 C (82.0 F)
197732.2 C (90.0 F)
197826.7 C (80.1 F)
197927.2 C (81.0 F)
198030.0 C (86.0 F)
198128.0 C (82.4 F)
198229.5 C (85.1 F)
198325.5 C (77.9 F)

Coldest night (TNn)

Coldest night (TNn) at Sewall Masset Inlet by year The coldest night of the year at Sewall Masset Inlet, 1974 to 1983. The record is -13.3 C (8.1 F) in 1977, marked on the chart; the median year is -10.3 C (13.5 F). -15-10-5019751980Record: -13.3 C (8.1 F) in 1977
The coldest night of the year at Sewall Masset Inlet, 1974 to 1983. The record is -13.3 C (8.1 F) in 1977, marked on the chart; the median year is -10.3 C (13.5 F).
Coldest night (TNn) at Sewall Masset Inlet by year
YearColdest night (TNn)
1974-1.7 C (28.9 F)
1975-11.7 C (10.9 F)
1976-10.6 C (12.9 F)
1977-13.3 C (8.1 F)
1978-12.2 C (10.0 F)
1979-8.9 C (16.0 F)
1980-10.0 C (14.0 F)
1981-5.5 C (22.1 F)
1982-11.5 C (11.3 F)
1983-9.0 C (15.8 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Sewall Masset Inlet by year The wettest day of the year at Sewall Masset Inlet, 1974 to 1983. The record is 62.7 mm (2.5 in) in 1974, marked on the chart; the median year is 42.8 mm (1.7 in). 304050607019751980Record: 62.7 mm (2.5 in) in 1974
The wettest day of the year at Sewall Masset Inlet, 1974 to 1983. The record is 62.7 mm (2.5 in) in 1974, marked on the chart; the median year is 42.8 mm (1.7 in).
Wettest day (Rx1day) at Sewall Masset Inlet by year
YearWettest day (Rx1day)
197462.7 mm (2.5 in)
197539.1 mm (1.5 in)
197646.5 mm (1.8 in)
197739.1 mm (1.5 in)
197851.3 mm (2.0 in)
197939.9 mm (1.6 in)
198052.1 mm (2.1 in)
198136.8 mm (1.4 in)
198237.4 mm (1.5 in)
198345.8 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Sewall Masset Inlet by year The wettest five days of the year at Sewall Masset Inlet, 1974 to 1983. The record is 139.9 mm (5.5 in) in 1980, marked on the chart; the median year is 89.6 mm (3.5 in). 608010012014019751980Record: 139.9 mm (5.5 in) in 1980
The wettest five days of the year at Sewall Masset Inlet, 1974 to 1983. The record is 139.9 mm (5.5 in) in 1980, marked on the chart; the median year is 89.6 mm (3.5 in).
Wettest five days (Rx5day) at Sewall Masset Inlet by year
YearWettest five days (Rx5day)
1974135.1 mm (5.3 in)
197582.4 mm (3.2 in)
197678.0 mm (3.1 in)
197798.5 mm (3.9 in)
1978129.6 mm (5.1 in)
197986.7 mm (3.4 in)
1980139.9 mm (5.5 in)
198191.0 mm (3.6 in)
198284.2 mm (3.3 in)
198388.2 mm (3.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Sewall Masset Inlet by year The longest dry spell of the year at Sewall Masset Inlet, 1974 to 1983. The record is 21 days in 1977, marked on the chart; the median year is 14 days. 1012.51517.52022.519751980Record: 21 days in 1977
The longest dry spell of the year at Sewall Masset Inlet, 1974 to 1983. The record is 21 days in 1977, marked on the chart; the median year is 14 days.
Longest dry spell (CDD) at Sewall Masset Inlet by year
YearLongest dry spell (CDD)
197414 days
197514 days
197611 days
197721 days
197819 days
197913 days
198012 days
198117 days
198218 days
198312 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 Sewall Masset Inlet standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Sewall Masset Inlet 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).