Chain Lake Weather Records (CA008200800)

Record envelope, standing records and threshold days for Chain Lake (CA008200800), Nova Scotia, Canada, with 33 years of record.

Key Facts for Chain Lake

Chain Lake (CA008200800) is a weather station in Nova Scotia, Canada at 44.63 latitude and -63.63 longitude, 59 m (194 ft) above sea level.
The station reports from 1945 to 1977, 33 years of record.
1,464 records set at Chain Lake still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Chain Lake set a daily record precipitation of 27.7 mm (1.1 in) on 3 April 1977.

About the Station

Location: Nova Scotia, Canada, 44.63 latitude, -63.63 longitude.
Elevation: 59 m (194 ft).
Period of record: 1945 to 1977, 33 years.
Eligible elements: prcp, snow.

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 Chain Lake. 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 Chain Lake, 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)	-28.3 C (-18.9 F)	n/a	n/a
Feb	12.2 C (54.0 F)	-31.7 C (-25.1 F)	n/a	n/a
Mar	16.7 C (62.1 F)	-26.1 C (-15.0 F)	n/a	n/a
Apr	24.4 C (75.9 F)	-11.1 C (12.0 F)	n/a	n/a
May	28.9 C (84.0 F)	-8.3 C (17.1 F)	n/a	n/a
Jun	33.3 C (91.9 F)	-0.6 C (30.9 F)	n/a	n/a
Jul	33.9 C (93.0 F)	4.4 C (39.9 F)	n/a	n/a
Aug	33.9 C (93.0 F)	2.2 C (36.0 F)	n/a	n/a
Sep	31.1 C (88.0 F)	-2.8 C (27.0 F)	n/a	n/a
Oct	25.0 C (77.0 F)	-7.8 C (18.0 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-15.6 C (3.9 F)	n/a	n/a
Dec	15.6 C (60.1 F)	-26.7 C (-16.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Chain Lake still stand. 1956 holds the most, with 116.

Standing records at Chain Lake by the year they were set
Year set	Standing records
1949	22
1950	75
1951	91
1952	38
1953	79
1954	86
1955	96
1956	116
1958	18
1965	68
1966	50
1967	78
1968	79
1969	64
1970	68
1971	63
1972	79
1973	63
1974	68
1975	66
1976	81
1977	16

Wettest Day of Each Month

Aug: 211.8 mm (8.3 in)

The wettest day on record for each calendar month at Chain Lake. The most was 211.8 mm (8.3 in) on 15 August 1971.

Record daily precipitation for each month at Chain Lake
Month	Record daily precipitation (mm)	Date
Jan	90.7 mm (3.6 in)	16 January 1958
Feb	117.9 mm (4.6 in)	8 February 1958
Mar	124.5 mm (4.9 in)	23 March 1972
Apr	95.8 mm (3.8 in)	8 April 1962
May	87.4 mm (3.4 in)	17 May 1971
Jun	61.0 mm (2.4 in)	19 June 1959
Jul	74.9 mm (2.9 in)	5 July 1951
Aug	211.8 mm (8.3 in)	15 August 1971
Sep	100.8 mm (4.0 in)	15 September 1946
Oct	102.6 mm (4.0 in)	29 October 1972
Nov	84.1 mm (3.3 in)	14 November 1945
Dec	95.3 mm (3.8 in)	10 December 1975

Period of Record Coverage

1949 to 1977

22 years of record at Chain Lake, 1949 to 1977. 4 years have data for under 90 percent of days and are left out of rankings: 1949, 1953, 1958, 1977.

Days with data per year at Chain Lake
Year	Days with data	Share of year	Complete
1949	122	33%	No
1950	365	100%	Yes
1951	364	100%	Yes
1952	365	100%	Yes
1953	304	83%	No
1954	335	92%	Yes
1955	365	100%	Yes
1956	335	92%	Yes
1958	61	17%	No
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	120	33%	No

Latest Records

Latest records at Chain Lake
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 April 1977	Chain Lake, CA	daily rain	27.7 mm (1.1 in)	5.1 mm (0.20 in)	18 years	12 of 100 (Routine)
19 March 1977	Chain Lake, CA	daily rain	15.7 mm (0.6 in)	0.5 mm (0.02 in)	12 years	6 of 100 (Routine)
5 March 1977	Chain Lake, CA	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	16 years	1 of 100 (Routine)
10 January 1977	Chain Lake, CA	daily rain	42.1 mm (1.7 in)	19.2 mm (0.8 in)	20 years	24 of 100 (Routine)
20 December 1976	Chain Lake, CA	daily rain	29.7 mm (1.2 in)	2.3 mm (0.09 in)	31 years	13 of 100 (Routine)
7 December 1976	Chain Lake, CA	daily rain	48.8 mm (1.9 in)	21.9 mm (0.9 in)	17 years	24 of 100 (Routine)
11 November 1976	Chain Lake, CA	daily snowfall	1.8 cm (0.7 in)	0.8 cm (0.3 in)	12 years	8 of 100 (Routine)
10 November 1976	Chain Lake, CA	daily snowfall	4.3 cm (1.7 in)	1.8 cm (0.7 in)	5 years	8 of 100 (Routine)
8 November 1976	Chain Lake, CA	daily snowfall	11.9 cm (4.7 in)	6.8 cm (2.7 in)	9 years	23 of 100 (Routine)
21 October 1976	Chain Lake, CA	daily rain	57.9 mm (2.3 in)	17.3 mm (0.7 in)	22 years	19 of 100 (Routine)
21 September 1976	Chain Lake, CA	daily rain	47.0 mm (1.9 in)	33.8 mm (1.3 in)	28 years	36 of 100 (Notable)
12 July 1976	Chain Lake, CA	daily rain	35.6 mm (1.4 in)	11.2 mm (0.4 in)	7 years	13 of 100 (Routine)
25 June 1976	Chain Lake, CA	daily rain	38.9 mm (1.5 in)	26.2 mm (1.0 in)	16 years	32 of 100 (Routine)
21 May 1976	Chain Lake, CA	daily rain	41.9 mm (1.6 in)	14.5 mm (0.6 in)	3 years	14 of 100 (Routine)
16 March 1976	Chain Lake, CA	daily snowfall (Tie)	15.2 cm (6.0 in)	tie	9 years	1 of 100 (Routine)
21 February 1976	Chain Lake, CA	daily rain (Tie)	7.6 mm (0.30 in)	tie	8 years	1 of 100 (Routine)
26 December 1975	Chain Lake, CA	daily rain	46.2 mm (1.8 in)	5.1 mm (0.20 in)	29 years	15 of 100 (Routine)
22 December 1975	Chain Lake, CA	daily rain	63.5 mm (2.5 in)	14.2 mm (0.6 in)	28 years	22 of 100 (Routine)
21 December 1975	Chain Lake, CA	daily snowfall	14.7 cm (5.8 in)	7.3 cm (2.9 in)	28 years	20 of 100 (Routine)
10 December 1975	Chain Lake, CA	monthly rain	95.3 mm (3.8 in)	11.2 mm (0.4 in)	8 years	24 of 100 (Routine)

Climate Trend

16 complete years, 1950 to 1976

One stripe for each of 16 complete years at Chain Lake, 1950 to 1976. Blue stripes are years cooler than the station's own mean of 6.3 C (43.4 F); red stripes are warmer. The coolest year was 1965, at 5.2 C (41.4 F), and the warmest was 1951, at 7.8 C (46.0 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Chain Lake as warming stripes, 1950 to 1976
Year	Annual mean temperature	Difference from the station mean
1950	6.5 C	+0.12 C
1951	7.8 C	+1.46 C
1952	7.2 C	+0.88 C
1955	6.4 C	+0.05 C
1965	5.2 C	-1.12 C
1966	6.7 C	+0.33 C
1967	5.5 C	-0.82 C
1968	6.2 C	-0.16 C
1969	7.1 C	+0.74 C
1970	5.8 C	-0.52 C
1971	6.1 C	-0.21 C
1972	5.5 C	-0.82 C
1973	6.7 C	+0.39 C
1974	5.6 C	-0.74 C
1975	6.3 C	-0.06 C
1976	6.8 C	+0.45 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

1945 to 1977

Yearly extremes at Chain Lake: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.9 C (93.0 F)	1956	30.0 C (86.0 F)	22
Coldest night (TNn)	-31.7 C (-25.1 F)	1954	-25.3 C (-13.5 F)	22
Wettest day (Rx1day)	211.8 mm (8.3 in)	1971	73.7 mm (2.9 in)	33
Wettest five days (Rx5day)	279.8 mm (11.0 in)	1971	110.8 mm (4.4 in)	33
Longest dry spell (CDD)	25 days	1947	14 days	33

Hottest day (TXx)

The hottest day of the year at Chain Lake, 1945 to 1977. The record is 33.9 C (93.0 F) in 1956, marked on the chart; the median year is 30.0 C (86.0 F).

Hottest day (TXx) at Chain Lake by year
Year	Hottest day (TXx)
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	25.6 C (78.1 F)
1950	30.0 C (86.0 F)
1951	29.4 C (84.9 F)
1952	30.6 C (87.1 F)
1953	31.1 C (88.0 F)
1954	32.2 C (90.0 F)
1955	33.3 C (91.9 F)
1956	33.9 C (93.0 F)
1957	n/a
1958	28.9 C (84.0 F)
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	28.9 C (84.0 F)
1966	28.3 C (82.9 F)
1967	28.9 C (84.0 F)
1968	31.7 C (89.1 F)
1969	31.1 C (88.0 F)
1970	30.0 C (86.0 F)
1971	28.9 C (84.0 F)
1972	28.3 C (82.9 F)
1973	31.7 C (89.1 F)
1974	28.9 C (84.0 F)
1975	31.1 C (88.0 F)
1976	33.9 C (93.0 F)
1977	21.7 C (71.1 F)

Coldest night (TNn)

The coldest night of the year at Chain Lake, 1945 to 1977. The record is -31.7 C (-25.1 F) in 1954, marked on the chart; the median year is -25.3 C (-13.5 F).

Coldest night (TNn) at Chain Lake by year
Year	Coldest night (TNn)
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	-13.9 C (7.0 F)
1950	-25.6 C (-14.1 F)
1951	-25.6 C (-14.1 F)
1952	-21.1 C (-6.0 F)
1953	-17.8 C (0.0 F)
1954	-31.7 C (-25.1 F)
1955	-26.7 C (-16.1 F)
1956	-25.6 C (-14.1 F)
1957	n/a
1958	-17.8 C (0.0 F)
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-23.3 C (-9.9 F)
1966	-26.1 C (-15.0 F)
1967	-28.3 C (-18.9 F)
1968	-25.6 C (-14.1 F)
1969	-17.8 C (0.0 F)
1970	-26.7 C (-16.1 F)
1971	-30.0 C (-22.0 F)
1972	-25.0 C (-13.0 F)
1973	-23.9 C (-11.0 F)
1974	-24.4 C (-11.9 F)
1975	-27.2 C (-17.0 F)
1976	-19.4 C (-2.9 F)
1977	-24.4 C (-11.9 F)

Wettest day (Rx1day)

The wettest day of the year at Chain Lake, 1945 to 1977. The record is 211.8 mm (8.3 in) in 1971, marked on the chart; the median year is 73.7 mm (2.9 in).

Wettest day (Rx1day) at Chain Lake by year
Year	Wettest day (Rx1day)
1945	84.1 mm (3.3 in)
1946	100.8 mm (4.0 in)
1947	77.0 mm (3.0 in)
1948	100.3 mm (3.9 in)
1949	115.1 mm (4.5 in)
1950	67.6 mm (2.7 in)
1951	74.9 mm (2.9 in)
1952	63.8 mm (2.5 in)
1953	96.5 mm (3.8 in)
1954	69.1 mm (2.7 in)
1955	62.2 mm (2.4 in)
1956	48.0 mm (1.9 in)
1957	55.9 mm (2.2 in)
1958	117.9 mm (4.6 in)
1959	73.7 mm (2.9 in)
1960	54.6 mm (2.1 in)
1961	91.4 mm (3.6 in)
1962	95.8 mm (3.8 in)
1963	73.9 mm (2.9 in)
1964	77.0 mm (3.0 in)
1965	68.3 mm (2.7 in)
1966	39.1 mm (1.5 in)
1967	84.1 mm (3.3 in)
1968	70.6 mm (2.8 in)
1969	62.2 mm (2.4 in)
1970	70.6 mm (2.8 in)
1971	211.8 mm (8.3 in)
1972	124.5 mm (4.9 in)
1973	59.7 mm (2.4 in)
1974	47.0 mm (1.9 in)
1975	95.3 mm (3.8 in)
1976	57.9 mm (2.3 in)
1977	44.2 mm (1.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Chain Lake, 1945 to 1977. The record is 279.8 mm (11.0 in) in 1971, marked on the chart; the median year is 110.8 mm (4.4 in).

Wettest five days (Rx5day) at Chain Lake by year
Year	Wettest five days (Rx5day)
1945	103.9 mm (4.1 in)
1946	107.5 mm (4.2 in)
1947	161.8 mm (6.4 in)
1948	110.8 mm (4.4 in)
1949	120.2 mm (4.7 in)
1950	126.2 mm (5.0 in)
1951	101.6 mm (4.0 in)
1952	86.1 mm (3.4 in)
1953	149.3 mm (5.9 in)
1954	118.3 mm (4.7 in)
1955	80.3 mm (3.2 in)
1956	151.4 mm (6.0 in)
1957	79.1 mm (3.1 in)
1958	161.3 mm (6.4 in)
1959	148.6 mm (5.9 in)
1960	152.4 mm (6.0 in)
1961	185.5 mm (7.3 in)
1962	103.6 mm (4.1 in)
1963	82.5 mm (3.2 in)
1964	117.9 mm (4.6 in)
1965	97.0 mm (3.8 in)
1966	68.2 mm (2.7 in)
1967	124.3 mm (4.9 in)
1968	102.4 mm (4.0 in)
1969	124.8 mm (4.9 in)
1970	98.3 mm (3.9 in)
1971	279.8 mm (11.0 in)
1972	137.9 mm (5.4 in)
1973	110.8 mm (4.4 in)
1974	82.3 mm (3.2 in)
1975	118.6 mm (4.7 in)
1976	87.6 mm (3.4 in)
1977	63.3 mm (2.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at Chain Lake, 1945 to 1977. The record is 25 days in 1947, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Chain Lake by year
Year	Longest dry spell (CDD)
1945	13 days
1946	13 days
1947	25 days
1948	12 days
1949	14 days
1950	15 days
1951	13 days
1952	20 days
1953	16 days
1954	16 days
1955	9 days
1956	15 days
1957	11 days
1958	17 days
1959	13 days
1960	10 days
1961	18 days
1962	11 days
1963	15 days
1964	15 days
1965	15 days
1966	12 days
1967	13 days
1968	15 days
1969	13 days
1970	14 days
1971	17 days
1972	10 days
1973	13 days
1974	9 days
1975	23 days
1976	14 days
1977	8 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

31 years, 1945 to 1976

A day with at least 72.5 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 202.4 mm (8.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Chain Lake: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	72.5 mm (2.9 in)
5 years	97.3 mm (3.8 in)
10 years	117.1 mm (4.6 in)
25 years	146.8 mm (5.8 in)
50 years	172.7 mm (6.8 in)	Longer than the 31 years of record
100 years	202.4 mm (8.0 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 1945 to 1976.

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: 211.8 mm (8.3 in) in 1971; 124.5 mm (4.9 in) in 1972; 117.9 mm (4.6 in) in 1958.

Download the Data

Data for Chain Lake standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Chain Lake 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).