Merry Island Lightstation Weather Records (CA001045100)

Record envelope, standing records and threshold days for Merry Island Lightstation (CA001045100), British Columbia, Canada, with 68 years of record.

Key Facts for Merry Island Lightstation

Merry Island Lightstation (CA001045100) is a weather station in British Columbia, Canada at 49.47 latitude and -123.92 longitude, 6 m (20 ft) above sea level.
The station reports from 1957 to 2024, 68 years of record.
1,464 records set at Merry Island Lightstation 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, 49.47 latitude, -123.92 longitude.
Elevation: 6 m (20 ft).
Period of record: 1957 to 2024, 68 years.
Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Merry Island Lightstation. 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 Merry Island Lightstation, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	12.2 C (54.0 F)	-7.2 C (19.0 F)	n/a	n/a
Feb	14.0 C (57.2 F)	-3.3 C (26.1 F)	n/a	n/a
Mar	15.6 C (60.1 F)	-3.3 C (26.1 F)	n/a	n/a
Apr	20.6 C (69.1 F)	-1.1 C (30.0 F)	n/a	n/a
May	28.4 C (83.1 F)	3.3 C (37.9 F)	n/a	n/a
Jun	29.9 C (85.8 F)	5.6 C (42.1 F)	n/a	n/a
Jul	29.4 C (84.9 F)	9.0 C (48.2 F)	n/a	n/a
Aug	32.2 C (90.0 F)	8.9 C (48.0 F)	n/a	n/a
Sep	25.6 C (78.1 F)	3.9 C (39.0 F)	n/a	n/a
Oct	21.1 C (70.0 F)	1.1 C (34.0 F)	n/a	n/a
Nov	15.0 C (59.0 F)	-3.3 C (26.1 F)	n/a	n/a
Dec	13.3 C (55.9 F)	-11.7 C (10.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Merry Island Lightstation still stand. 1972 holds the most, with 115.

Standing records at Merry Island Lightstation by the year they were set
Year set	Standing records
1960	51
1961	89
1962	68
1963	71
1964	44
1965	47
1966	59
1967	73
1968	63
1969	73
1970	44
1971	71
1972	115
1973	63
1974	49
1975	71
1976	50
1977	43
1978	37
1979	44
1980	60
1981	56
1982	55
1983	68

Wettest Day of Each Month

Jan: 78.2 mm (3.1 in)

The wettest day on record for each calendar month at Merry Island Lightstation. The most was 78.2 mm (3.1 in) on 18 January 1968.

Record daily precipitation for each month at Merry Island Lightstation
Month	Record daily precipitation (mm)	Date
Jan	78.2 mm (3.1 in)	18 January 1968
Feb	49.0 mm (1.9 in)	11 February 1983
Mar	44.7 mm (1.8 in)	4 March 1968
Apr	31.8 mm (1.3 in)	27 April 1962
May	28.7 mm (1.1 in)	2 May 1963
Jun	41.9 mm (1.6 in)	10 June 1972
Jul	37.1 mm (1.5 in)	19 July 1968
Aug	42.4 mm (1.7 in)	4 August 1962
Sep	69.4 mm (2.7 in)	1 September 1983
Oct	62.2 mm (2.4 in)	21 October 1963
Nov	52.6 mm (2.1 in)	29 November 1964
Dec	66.0 mm (2.6 in)	25 December 1972

Period of Record Coverage

1960 to 1983

24 years of record at Merry Island Lightstation, 1960 to 1983. Every year has data for at least 90 percent of its days.

Days with data per year at Merry Island Lightstation
Year	Days with data	Share of year	Complete
1960	335	92%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	365	100%	Yes
1974	365	100%	Yes
1975	365	100%	Yes
1976	366	100%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes

Latest Records

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

Climate Trend

23 complete years, 1961 to 1983

One stripe for each of 23 complete years at Merry Island Lightstation, 1961 to 1983. Blue stripes are years cooler than the station's own mean of 10.5 C (50.9 F); red stripes are warmer. The coolest year was 1972, at 9.5 C (49.0 F), and the warmest was 1967, at 11.4 C (52.5 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Merry Island Lightstation as warming stripes, 1961 to 1983
Year	Annual mean temperature	Difference from the station mean
1961	11.1 C	+0.60 C
1962	10.7 C	+0.21 C
1963	11.1 C	+0.66 C
1964	10.0 C	-0.43 C
1965	10.7 C	+0.27 C
1966	10.8 C	+0.35 C
1967	11.4 C	+0.90 C
1968	10.6 C	+0.12 C
1969	10.6 C	+0.10 C
1970	10.3 C	-0.19 C
1971	9.5 C	-0.94 C
1972	9.5 C	-1.00 C
1973	10.1 C	-0.40 C
1974	10.3 C	-0.20 C
1975	9.6 C	-0.86 C
1976	10.1 C	-0.36 C
1977	10.3 C	-0.18 C
1978	10.4 C	-0.10 C
1979	10.9 C	+0.38 C
1980	10.6 C	+0.11 C
1981	10.9 C	+0.47 C
1982	10.5 C	+0.03 C
1983	11.0 C	+0.53 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

1957 to 1983

Yearly extremes at Merry Island Lightstation: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	32.2 C (90.0 F)	1961	27.8 C (82.0 F)	24
Coldest night (TNn)	-11.7 C (10.9 F)	1968	-3.6 C (25.5 F)	24
Wettest day (Rx1day)	78.2 mm (3.1 in)	1968	40.6 mm (1.6 in)	27
Wettest five days (Rx5day)	134.3 mm (5.3 in)	1979	82.4 mm (3.2 in)	27
Longest dry spell (CDD)	50 days	1960	25 days	27

Hottest day (TXx)

The hottest day of the year at Merry Island Lightstation, 1957 to 1983. The record is 32.2 C (90.0 F) in 1961, marked on the chart; the median year is 27.8 C (82.0 F).

Hottest day (TXx) at Merry Island Lightstation by year
Year	Hottest day (TXx)
1957	n/a
1958	n/a
1959	n/a
1960	30.0 C (86.0 F)
1961	32.2 C (90.0 F)
1962	25.6 C (78.1 F)
1963	27.2 C (81.0 F)
1964	24.4 C (75.9 F)
1965	28.9 C (84.0 F)
1966	26.1 C (79.0 F)
1967	28.9 C (84.0 F)
1968	27.2 C (81.0 F)
1969	28.9 C (84.0 F)
1970	26.7 C (80.1 F)
1971	28.9 C (84.0 F)
1972	27.8 C (82.0 F)
1973	25.6 C (78.1 F)
1974	27.2 C (81.0 F)
1975	26.7 C (80.1 F)
1976	23.9 C (75.0 F)
1977	28.5 C (83.3 F)
1978	29.9 C (85.8 F)
1979	27.8 C (82.0 F)
1980	25.1 C (77.2 F)
1981	28.5 C (83.3 F)
1982	28.2 C (82.8 F)
1983	28.4 C (83.1 F)

Coldest night (TNn)

The coldest night of the year at Merry Island Lightstation, 1957 to 1983. The record is -11.7 C (10.9 F) in 1968, marked on the chart; the median year is -3.6 C (25.5 F).

Coldest night (TNn) at Merry Island Lightstation by year
Year	Coldest night (TNn)
1957	n/a
1958	n/a
1959	n/a
1960	-2.2 C (28.0 F)
1961	-2.2 C (28.0 F)
1962	-3.9 C (25.0 F)
1963	-3.9 C (25.0 F)
1964	-9.4 C (15.1 F)
1965	-0.6 C (30.9 F)
1966	-1.1 C (30.0 F)
1967	-2.2 C (28.0 F)
1968	-11.7 C (10.9 F)
1969	-7.2 C (19.0 F)
1970	-3.3 C (26.1 F)
1971	-5.0 C (23.0 F)
1972	-5.6 C (21.9 F)
1973	-3.3 C (26.1 F)
1974	-2.8 C (27.0 F)
1975	-2.8 C (27.0 F)
1976	-3.3 C (26.1 F)
1977	-2.3 C (27.9 F)
1978	-5.9 C (21.4 F)
1979	-5.5 C (22.1 F)
1980	-4.2 C (24.4 F)
1981	-1.0 C (30.2 F)
1982	-5.1 C (22.8 F)
1983	-6.9 C (19.6 F)

Wettest day (Rx1day)

The wettest day of the year at Merry Island Lightstation, 1957 to 1983. The record is 78.2 mm (3.1 in) in 1968, marked on the chart; the median year is 40.6 mm (1.6 in).

Wettest day (Rx1day) at Merry Island Lightstation by year
Year	Wettest day (Rx1day)
1957	15.7 mm (0.6 in)
1958	32.3 mm (1.3 in)
1959	25.7 mm (1.0 in)
1960	39.6 mm (1.6 in)
1961	40.9 mm (1.6 in)
1962	42.4 mm (1.7 in)
1963	62.2 mm (2.4 in)
1964	52.6 mm (2.1 in)
1965	40.1 mm (1.6 in)
1966	45.7 mm (1.8 in)
1967	29.0 mm (1.1 in)
1968	78.2 mm (3.1 in)
1969	51.6 mm (2.0 in)
1970	19.1 mm (0.8 in)
1971	57.2 mm (2.3 in)
1972	66.0 mm (2.6 in)
1973	49.5 mm (1.9 in)
1974	40.6 mm (1.6 in)
1975	33.0 mm (1.3 in)
1976	38.1 mm (1.5 in)
1977	34.8 mm (1.4 in)
1978	27.1 mm (1.1 in)
1979	57.2 mm (2.3 in)
1980	45.2 mm (1.8 in)
1981	27.4 mm (1.1 in)
1982	35.4 mm (1.4 in)
1983	69.4 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Merry Island Lightstation, 1957 to 1983. The record is 134.3 mm (5.3 in) in 1979, marked on the chart; the median year is 82.4 mm (3.2 in).

Wettest five days (Rx5day) at Merry Island Lightstation by year
Year	Wettest five days (Rx5day)
1957	38.6 mm (1.5 in)
1958	75.4 mm (3.0 in)
1959	52.6 mm (2.1 in)
1960	76.2 mm (3.0 in)
1961	86.1 mm (3.4 in)
1962	76.2 mm (3.0 in)
1963	93.6 mm (3.7 in)
1964	98.3 mm (3.9 in)
1965	83.1 mm (3.3 in)
1966	95.5 mm (3.8 in)
1967	67.4 mm (2.7 in)
1968	110.4 mm (4.3 in)
1969	88.2 mm (3.5 in)
1970	57.7 mm (2.3 in)
1971	80.8 mm (3.2 in)
1972	90.5 mm (3.6 in)
1973	105.7 mm (4.2 in)
1974	79.3 mm (3.1 in)
1975	83.7 mm (3.3 in)
1976	53.8 mm (2.1 in)
1977	68.4 mm (2.7 in)
1978	77.7 mm (3.1 in)
1979	134.3 mm (5.3 in)
1980	95.2 mm (3.7 in)
1981	77.8 mm (3.1 in)
1982	82.4 mm (3.2 in)
1983	109.0 mm (4.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Merry Island Lightstation, 1957 to 1983. The record is 50 days in 1960, marked on the chart; the median year is 25 days.

Longest dry spell (CDD) at Merry Island Lightstation by year
Year	Longest dry spell (CDD)
1957	8 days
1958	34 days
1959	29 days
1960	50 days
1961	39 days
1962	16 days
1963	19 days
1964	10 days
1965	28 days
1966	13 days
1967	30 days
1968	17 days
1969	29 days
1970	26 days
1971	22 days
1972	34 days
1973	21 days
1974	47 days
1975	33 days
1976	16 days
1977	35 days
1978	15 days
1979	33 days
1980	14 days
1981	24 days
1982	23 days
1983	25 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 Merry Island Lightstation standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Merry Island Lightstation 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-13. Last revised 13 October 2026 (2026-10-13).