South Slocan Weather Records (CA001147620)

Record envelope, standing records and threshold days for South Slocan (CA001147620), British Columbia, Canada, with 69 years of record.

Key Facts for South Slocan

South Slocan (CA001147620) is a weather station in British Columbia, Canada at 49.47 latitude and -117.52 longitude, 457 m (1,499 ft) above sea level.
The station reports from 1940 to 2008, 69 years of record.
1,464 records set at South Slocan still stand.
Records are tracked for tmax, tmin, prcp, snow: an element needs 30 years of data to be eligible.
South Slocan set a daily record low minimum temperature of -25.5 C (-13.9 F) on 24 December 1983.

About the Station

Location: British Columbia, Canada, 49.47 latitude, -117.52 longitude.
Elevation: 457 m (1,499 ft).
Period of record: 1940 to 2008, 69 years.
Eligible elements: tmax, tmin, 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 South Slocan. 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 South Slocan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	9.4 C (48.9 F)	-31.7 C (-25.1 F)	n/a	n/a
Feb	12.2 C (54.0 F)	-30.6 C (-23.1 F)	n/a	n/a
Mar	20.0 C (68.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Apr	30.0 C (86.0 F)	-7.8 C (18.0 F)	n/a	n/a
May	33.9 C (93.0 F)	-6.1 C (21.0 F)	n/a	n/a
Jun	35.6 C (96.1 F)	0.0 C (32.0 F)	n/a	n/a
Jul	40.0 C (104.0 F)	2.8 C (37.0 F)	n/a	n/a
Aug	39.4 C (102.9 F)	2.2 C (36.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	26.1 C (79.0 F)	-8.9 C (16.0 F)	n/a	n/a
Nov	17.2 C (63.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Dec	11.7 C (53.1 F)	-35.0 C (-31.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at South Slocan still stand. 1941 holds the most, with 68.

Standing records at South Slocan by the year they were set
Year set	Standing records
1940	8
1941	68
1942	34
1943	43
1944	40
1945	40
1946	26
1947	39
1948	22
1949	51
1950	59
1951	33
1952	36
1953	33
1954	51
1955	57
1956	40
1957	33
1958	52
1959	21
1960	38
1961	39
1962	30
1963	25
1964	22
1965	36
1966	19
1967	32
1968	19
1969	20
1970	16
1971	36
1972	39
1973	24
1974	30
1975	26
1976	13
1977	30
1978	25
1979	31
1980	32
1981	31
1982	26
1983	39

All-Time Record Progression

2 new records

2 all-time records were set at South Slocan between 7 January 1982 and 29 June 1982. Each dot is a new record.

When South Slocan set new all-time records
Date	Kind	Detail
1982-01-07	Record daily snowfall	Record daily snowfall 45.0 cm (17.7 in)
1982-06-29	Record daily precipitation	Record daily precipitation 73.1 mm (2.9 in)

Wettest Day of Each Month

Jun: 73.1 mm (2.9 in)

The wettest day on record for each calendar month at South Slocan. The most was 73.1 mm (2.9 in) on 29 June 1982.

Record daily precipitation for each month at South Slocan
Month	Record daily precipitation (mm)	Date
Jan	45.0 mm (1.8 in)	7 January 1982
Feb	35.8 mm (1.4 in)	13 February 1982
Mar	27.4 mm (1.1 in)	29 March 1960
Apr	28.6 mm (1.1 in)	28 April 1980
May	31.8 mm (1.3 in)	29 May 1969
Jun	73.1 mm (2.9 in)	29 June 1982
Jul	35.3 mm (1.4 in)	12 July 1972
Aug	36.8 mm (1.4 in)	19 August 1956
Sep	56.4 mm (2.2 in)	4 September 1945
Oct	42.7 mm (1.7 in)	10 October 1940
Nov	36.6 mm (1.4 in)	18 November 1946
Dec	40.0 mm (1.6 in)	3 December 1980

Period of Record Coverage

1940 to 1983

44 years of record at South Slocan, 1940 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1940, 1953.

Days with data per year at South Slocan
Year	Days with data	Share of year	Complete
1940	92	25%	No
1941	364	100%	Yes
1942	364	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	364	100%	Yes
1947	364	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	364	100%	Yes
1951	359	98%	Yes
1952	355	97%	Yes
1953	326	89%	No
1954	359	98%	Yes
1955	351	96%	Yes
1956	347	95%	Yes
1957	360	99%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	362	99%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	364	100%	Yes
1964	366	100%	Yes
1965	362	99%	Yes
1966	363	99%	Yes
1967	363	99%	Yes
1968	365	100%	Yes
1969	365	100%	Yes
1970	356	98%	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	364	100%	Yes
1978	364	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	364	100%	Yes
1982	364	100%	Yes
1983	363	99%	Yes

Latest Records

Latest records at South Slocan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 December 1983	South Slocan, CA	daily low min	-25.5 C (-13.9 F)	5.5 C (9.9 F)	34 years	24 of 100 (Routine)
24 December 1983	South Slocan, CA	daily low max	-10.0 C (14.0 F)	2.8 C (5.0 F)	34 years	21 of 100 (Routine)
23 December 1983	South Slocan, CA	daily low min	-26.0 C (-14.8 F)	5.4 C (9.7 F)	34 years	23 of 100 (Routine)
23 December 1983	South Slocan, CA	daily low max	-17.0 C (1.4 F)	3.1 C (5.6 F)	32 years	21 of 100 (Routine)
22 December 1983	South Slocan, CA	daily low max	-14.0 C (6.8 F)	5.7 C (10.3 F)	12 years	22 of 100 (Routine)
22 December 1983	South Slocan, CA	daily low min	-22.5 C (-8.5 F)	3.1 C (5.6 F)	12 years	12 of 100 (Routine)
21 December 1983	South Slocan, CA	daily low max	-11.0 C (12.2 F)	2.1 C (3.8 F)	32 years	18 of 100 (Routine)
21 December 1983	South Slocan, CA	daily low min	-19.0 C (-2.2 F)	2.9 C (5.2 F)	32 years	18 of 100 (Routine)
20 December 1983	South Slocan, CA	daily low min	-17.0 C (1.4 F)	2.0 C (3.6 F)	16 years	11 of 100 (Routine)
2 December 1983	South Slocan, CA	daily low min	-10.0 C (14.0 F)	0.6 C (1.1 F)	28 years	13 of 100 (Routine)
2 December 1983	South Slocan, CA	daily low max	-2.0 C (28.4 F)	1.4 C (2.5 F)	12 years	10 of 100 (Routine)
10 November 1983	South Slocan, CA	daily rain	17.4 mm (0.7 in)	0.9 mm (0.04 in)	37 years	16 of 100 (Routine)
5 November 1983	South Slocan, CA	daily rain	7.2 mm (0.28 in)	0.1 mm (0.00 in)	38 years	15 of 100 (Routine)
4 November 1983	South Slocan, CA	daily high min	6.0 C (42.8 F)	0.4 C (0.7 F)	20 years	10 of 100 (Routine)
3 November 1983	South Slocan, CA	daily high min	7.5 C (45.5 F)	1.4 C (2.5 F)	24 years	14 of 100 (Routine)
3 November 1983	South Slocan, CA	daily rain	24.4 mm (1.0 in)	0.1 mm (0.00 in)	4 years	5 of 100 (Routine)
30 October 1983	South Slocan, CA	daily rain	14.2 mm (0.6 in)	1.0 mm (0.04 in)	29 years	13 of 100 (Routine)
27 October 1983	South Slocan, CA	daily high max	17.5 C (63.5 F)	1.9 C (3.4 F)	41 years	20 of 100 (Routine)
17 October 1983	South Slocan, CA	daily low max	7.5 C (45.5 F)	0.3 C (0.5 F)	32 years	13 of 100 (Routine)
12 October 1983	South Slocan, CA	daily low min	-3.0 C (26.6 F)	2.0 C (3.6 F)	5 years	10 of 100 (Routine)

Climate Trend

42 complete years, 1941 to 1983

One stripe for each of 42 complete years at South Slocan, 1941 to 1983. Blue stripes are years cooler than the station's own mean of 7.8 C (46.0 F); red stripes are warmer. The coolest year was 1955, at 6.1 C (42.9 F), and the warmest was 1941, at 9.6 C (49.3 F). The strongest colour marks a difference of 1.9 C (3.4 F).

Annual mean temperature at South Slocan as warming stripes, 1941 to 1983
Year	Annual mean temperature	Difference from the station mean
1941	9.6 C	+1.84 C
1942	8.6 C	+0.80 C
1943	7.6 C	-0.24 C
1944	8.7 C	+0.87 C
1945	8.4 C	+0.64 C
1946	8.2 C	+0.36 C
1947	8.6 C	+0.83 C
1948	7.3 C	-0.54 C
1949	7.4 C	-0.41 C
1950	7.3 C	-0.50 C
1951	7.6 C	-0.24 C
1952	8.6 C	+0.77 C
1954	7.8 C	+0.05 C
1955	6.1 C	-1.71 C
1956	7.4 C	-0.36 C
1957	7.4 C	-0.38 C
1958	9.4 C	+1.56 C
1959	7.0 C	-0.76 C
1960	6.9 C	-0.87 C
1961	8.2 C	+0.45 C
1962	7.7 C	-0.09 C
1963	8.4 C	+0.64 C
1964	6.8 C	-0.96 C
1965	7.6 C	-0.23 C
1966	8.0 C	+0.16 C
1967	8.5 C	+0.67 C
1968	7.4 C	-0.38 C
1969	7.7 C	-0.13 C
1970	7.7 C	-0.09 C
1971	7.1 C	-0.70 C
1972	6.8 C	-0.99 C
1973	8.0 C	+0.21 C
1974	8.1 C	+0.30 C
1975	7.0 C	-0.78 C
1976	7.6 C	-0.17 C
1977	7.7 C	-0.07 C
1978	7.4 C	-0.40 C
1979	7.7 C	-0.07 C
1980	8.0 C	+0.20 C
1981	8.4 C	+0.64 C
1982	7.4 C	-0.43 C
1983	8.2 C	+0.45 C

The fitted trend in annual mean temperature here over 1941 to 1983 is -0.13 C (-0.30 to 0.04) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.2 F (-0.5 to 0.1) per decade. The slope is a straight line fitted to 42 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at South Slocan
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.13 C (-0.30 to 0.04) per decade	-0.2 F (-0.5 to 0.1) per decade	1941 to 1983	42	Not clearly different from zero
Mean daily maximum	-0.18 C (-0.39 to 0.02) per decade	-0.33 F (-0.70 to 0.04) per decade	1941 to 1983	42	Not clearly different from zero
Mean daily minimum	-0.1 C (-0.3 to 0.1) per decade	-0.1 F (-0.5 to 0.2) per decade	1941 to 1983	42	Not 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

1940 to 1983

Yearly extremes at South Slocan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1941	36.7 C (98.1 F)	44
Coldest night (TNn)	-35.0 C (-31.0 F)	1968	-21.8 C (-7.3 F)	44
Wettest day (Rx1day)	73.1 mm (2.9 in)	1982	29.0 mm (1.1 in)	44
Wettest five days (Rx5day)	107.9 mm (4.2 in)	1982	60.5 mm (2.4 in)	44
Longest dry spell (CDD)	52 days	1958	22 days	44

Hottest day (TXx)

The hottest day of the year at South Slocan, 1940 to 1983. The record is 40.0 C (104.0 F) in 1941, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at South Slocan by year
Year	Hottest day (TXx)
1940	17.8 C (64.0 F)
1941	40.0 C (104.0 F)
1942	37.8 C (100.0 F)
1943	36.7 C (98.1 F)
1944	40.0 C (104.0 F)
1945	38.3 C (100.9 F)
1946	38.3 C (100.9 F)
1947	35.6 C (96.1 F)
1948	34.4 C (93.9 F)
1949	37.8 C (100.0 F)
1950	37.8 C (100.0 F)
1951	38.9 C (102.0 F)
1952	37.8 C (100.0 F)
1953	35.6 C (96.1 F)
1954	33.9 C (93.0 F)
1955	33.3 C (91.9 F)
1956	36.1 C (97.0 F)
1957	33.3 C (91.9 F)
1958	37.8 C (100.0 F)
1959	36.7 C (98.1 F)
1960	38.3 C (100.9 F)
1961	39.4 C (102.9 F)
1962	35.6 C (96.1 F)
1963	34.4 C (93.9 F)
1964	33.3 C (91.9 F)
1965	36.1 C (97.0 F)
1966	35.6 C (96.1 F)
1967	39.4 C (102.9 F)
1968	36.1 C (97.0 F)
1969	35.6 C (96.1 F)
1970	38.3 C (100.9 F)
1971	37.8 C (100.0 F)
1972	35.6 C (96.1 F)
1973	37.8 C (100.0 F)
1974	36.7 C (98.1 F)
1975	37.8 C (100.0 F)
1976	35.0 C (95.0 F)
1977	37.8 C (100.0 F)
1978	38.0 C (100.4 F)
1979	38.5 C (101.3 F)
1980	34.0 C (93.2 F)
1981	36.5 C (97.7 F)
1982	34.5 C (94.1 F)
1983	36.0 C (96.8 F)

Coldest night (TNn)

The coldest night of the year at South Slocan, 1940 to 1983. The record is -35.0 C (-31.0 F) in 1968, marked on the chart; the median year is -21.8 C (-7.3 F).

Coldest night (TNn) at South Slocan by year
Year	Coldest night (TNn)
1940	-12.8 C (9.0 F)
1941	-11.1 C (12.0 F)
1942	-19.4 C (-2.9 F)
1943	-28.9 C (-20.0 F)
1944	-17.2 C (1.0 F)
1945	-16.7 C (1.9 F)
1946	-17.8 C (0.0 F)
1947	-21.7 C (-7.1 F)
1948	-21.7 C (-7.1 F)
1949	-23.3 C (-9.9 F)
1950	-31.7 C (-25.1 F)
1951	-25.0 C (-13.0 F)
1952	-25.6 C (-14.1 F)
1953	-11.1 C (12.0 F)
1954	-26.7 C (-16.1 F)
1955	-22.2 C (-8.0 F)
1956	-23.3 C (-9.9 F)
1957	-25.6 C (-14.1 F)
1958	-16.7 C (1.9 F)
1959	-23.9 C (-11.0 F)
1960	-20.6 C (-5.1 F)
1961	-19.4 C (-2.9 F)
1962	-28.3 C (-18.9 F)
1963	-22.2 C (-8.0 F)
1964	-26.7 C (-16.1 F)
1965	-15.6 C (3.9 F)
1966	-20.0 C (-4.0 F)
1967	-17.8 C (0.0 F)
1968	-35.0 C (-31.0 F)
1969	-22.8 C (-9.0 F)
1970	-19.4 C (-2.9 F)
1971	-18.9 C (-2.0 F)
1972	-22.8 C (-9.0 F)
1973	-20.0 C (-4.0 F)
1974	-20.6 C (-5.1 F)
1975	-25.6 C (-14.1 F)
1976	-18.9 C (-2.0 F)
1977	-20.0 C (-4.0 F)
1978	-30.0 C (-22.0 F)
1979	-27.0 C (-16.6 F)
1980	-24.5 C (-12.1 F)
1981	-17.5 C (0.5 F)
1982	-22.0 C (-7.6 F)
1983	-26.0 C (-14.8 F)

Wettest day (Rx1day)

The wettest day of the year at South Slocan, 1940 to 1983. The record is 73.1 mm (2.9 in) in 1982, marked on the chart; the median year is 29.0 mm (1.1 in).

Wettest day (Rx1day) at South Slocan by year
Year	Wettest day (Rx1day)
1940	42.7 mm (1.7 in)
1941	22.9 mm (0.9 in)
1942	26.2 mm (1.0 in)
1943	43.2 mm (1.7 in)
1944	19.8 mm (0.8 in)
1945	56.4 mm (2.2 in)
1946	36.6 mm (1.4 in)
1947	27.4 mm (1.1 in)
1948	34.0 mm (1.3 in)
1949	38.4 mm (1.5 in)
1950	25.4 mm (1.0 in)
1951	31.0 mm (1.2 in)
1952	19.8 mm (0.8 in)
1953	24.1 mm (0.9 in)
1954	27.9 mm (1.1 in)
1955	27.4 mm (1.1 in)
1956	36.8 mm (1.4 in)
1957	31.2 mm (1.2 in)
1958	27.2 mm (1.1 in)
1959	36.1 mm (1.4 in)
1960	32.3 mm (1.3 in)
1961	27.2 mm (1.1 in)
1962	26.9 mm (1.1 in)
1963	24.9 mm (1.0 in)
1964	30.5 mm (1.2 in)
1965	43.2 mm (1.7 in)
1966	24.4 mm (1.0 in)
1967	34.8 mm (1.4 in)
1968	26.7 mm (1.1 in)
1969	31.8 mm (1.3 in)
1970	29.2 mm (1.1 in)
1971	30.7 mm (1.2 in)
1972	35.3 mm (1.4 in)
1973	32.0 mm (1.3 in)
1974	28.7 mm (1.1 in)
1975	31.8 mm (1.3 in)
1976	27.9 mm (1.1 in)
1977	28.4 mm (1.1 in)
1978	24.3 mm (1.0 in)
1979	26.0 mm (1.0 in)
1980	40.0 mm (1.6 in)
1981	24.0 mm (0.9 in)
1982	73.1 mm (2.9 in)
1983	25.0 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at South Slocan, 1940 to 1983. The record is 107.9 mm (4.2 in) in 1982, marked on the chart; the median year is 60.5 mm (2.4 in).

Wettest five days (Rx5day) at South Slocan by year
Year	Wettest five days (Rx5day)
1940	53.6 mm (2.1 in)
1941	65.5 mm (2.6 in)
1942	55.2 mm (2.2 in)
1943	66.1 mm (2.6 in)
1944	41.7 mm (1.6 in)
1945	65.5 mm (2.6 in)
1946	66.8 mm (2.6 in)
1947	55.4 mm (2.2 in)
1948	55.5 mm (2.2 in)
1949	58.1 mm (2.3 in)
1950	60.9 mm (2.4 in)
1951	63.8 mm (2.5 in)
1952	55.7 mm (2.2 in)
1953	66.1 mm (2.6 in)
1954	59.8 mm (2.4 in)
1955	58.9 mm (2.3 in)
1956	53.7 mm (2.1 in)
1957	53.3 mm (2.1 in)
1958	52.1 mm (2.1 in)
1959	56.9 mm (2.2 in)
1960	69.9 mm (2.8 in)
1961	49.0 mm (1.9 in)
1962	80.0 mm (3.1 in)
1963	71.1 mm (2.8 in)
1964	77.2 mm (3.0 in)
1965	91.5 mm (3.6 in)
1966	62.5 mm (2.5 in)
1967	58.9 mm (2.3 in)
1968	54.4 mm (2.1 in)
1969	62.6 mm (2.5 in)
1970	60.0 mm (2.4 in)
1971	61.0 mm (2.4 in)
1972	85.7 mm (3.4 in)
1973	59.2 mm (2.3 in)
1974	83.0 mm (3.3 in)
1975	62.9 mm (2.5 in)
1976	47.0 mm (1.9 in)
1977	65.0 mm (2.6 in)
1978	47.4 mm (1.9 in)
1979	51.3 mm (2.0 in)
1980	68.0 mm (2.7 in)
1981	56.8 mm (2.2 in)
1982	107.9 mm (4.2 in)
1983	68.7 mm (2.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at South Slocan, 1940 to 1983. The record is 52 days in 1958, marked on the chart; the median year is 22 days.

Longest dry spell (CDD) at South Slocan by year
Year	Longest dry spell (CDD)
1940	10 days
1941	21 days
1942	18 days
1943	28 days
1944	27 days
1945	38 days
1946	22 days
1947	18 days
1948	29 days
1949	20 days
1950	30 days
1951	34 days
1952	41 days
1953	25 days
1954	24 days
1955	40 days
1956	30 days
1957	34 days
1958	52 days
1959	36 days
1960	29 days
1961	17 days
1962	17 days
1963	17 days
1964	22 days
1965	18 days
1966	21 days
1967	29 days
1968	21 days
1969	33 days
1970	25 days
1971	40 days
1972	17 days
1973	31 days
1974	38 days
1975	16 days
1976	19 days
1977	21 days
1978	16 days
1979	17 days
1980	14 days
1981	20 days
1982	12 days
1983	19 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

42 years with a frost

Across 42 years with a frost, the median last spring frost at South Slocan falls on 12 May and the median first autumn frost on 30 September, which leaves a median of 145 days between them.

Fitted over all years, the growing season changes by -0.1 days per decade at this station.

Frost dates and growing season at South Slocan
Measure	Median, all years	Earliest period	Recent period (1954 to 1983)	Recent against earliest	Fitted trend
Last spring frost	12 May	n/a	12 May	n/a	-1.4 days per decade
First autumn frost	30 September	n/a	1 October	n/a	-1.5 days per decade
Growing days	145 days	n/a	145 days	n/a	-0.1 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

43 years, 1941 to 1983

A day with at least 28.9 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 68.6 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at South Slocan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.9 mm (1.1 in)
5 years	35.9 mm (1.4 in)
10 years	41.7 mm (1.6 in)
25 years	50.8 mm (2.0 in)
50 years	59.0 mm (2.3 in)	Longer than the 43 years of record
100 years	68.6 mm (2.7 in)	Longer than the 43 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, 43 years of values from 1941 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: 73.1 mm (2.9 in) in 1982; 56.4 mm (2.2 in) in 1945; 43.2 mm (1.7 in) in 1943.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of South Slocan, at 1955. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1955 ran 0.4 C (0.7 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at South Slocan, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1955	-0.4	-0.7	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Download the Data

Data for South Slocan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for South Slocan 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 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-17. Last revised 17 October 2026 (2026-10-17).