Deer Park Weather Records (CA001142400)

Record envelope, standing records and threshold days for Deer Park (CA001142400), British Columbia, Canada, with 72 years of record.

Key Facts for Deer Park

Deer Park (CA001142400) is a weather station in British Columbia, Canada at 49.42 latitude and -118.05 longitude, 485 m (1,591 ft) above sea level.
The station reports from 1924 to 1995, 72 years of record.
1,464 records set at Deer Park still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Deer Park set a daily record snowfall of 9.8 cm (3.9 in) on 9 December 1983.

About the Station

Location: British Columbia, Canada, 49.42 latitude, -118.05 longitude.
Elevation: 485 m (1,591 ft).
Period of record: 1924 to 1995, 72 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 Deer Park. 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 Deer Park, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	10.0 C (50.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Feb	13.3 C (55.9 F)	-20.6 C (-5.1 F)	n/a	n/a
Mar	20.0 C (68.0 F)	-17.8 C (0.0 F)	n/a	n/a
Apr	27.8 C (82.0 F)	-6.7 C (19.9 F)	n/a	n/a
May	32.8 C (91.0 F)	-1.1 C (30.0 F)	n/a	n/a
Jun	35.0 C (95.0 F)	2.2 C (36.0 F)	n/a	n/a
Jul	38.3 C (100.9 F)	3.9 C (39.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	4.4 C (39.9 F)	n/a	n/a
Sep	33.9 C (93.0 F)	-1.7 C (28.9 F)	n/a	n/a
Oct	23.0 C (73.4 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	17.8 C (64.0 F)	-17.2 C (1.0 F)	n/a	n/a
Dec	13.5 C (56.3 F)	-27.8 C (-18.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Deer Park still stand. 1958 holds the most, with 76.

Standing records at Deer Park by the year they were set
Year set	Standing records
1955	47
1956	63
1957	57
1958	76
1959	55
1960	59
1961	61
1962	74
1963	59
1964	44
1965	71
1966	49
1967	54
1968	47
1969	50
1970	47
1971	48
1972	75
1973	45
1974	30
1975	46
1976	32
1977	34
1978	21
1979	36
1980	48
1981	35
1982	48
1983	53

Wettest Day of Each Month

Oct: 47.0 mm (1.9 in)

The wettest day on record for each calendar month at Deer Park. The most was 47.0 mm (1.9 in) on 7 October 1930.

Record daily precipitation for each month at Deer Park
Month	Record daily precipitation (mm)	Date
Jan	35.6 mm (1.4 in)	20 January 1943
Feb	25.4 mm (1.0 in)	1 February 1937
Mar	22.9 mm (0.9 in)	6 March 1934
Apr	23.1 mm (0.9 in)	14 April 1976
May	30.5 mm (1.2 in)	30 May 1934
Jun	45.5 mm (1.8 in)	5 June 1924
Jul	25.2 mm (1.0 in)	6 July 1981
Aug	30.5 mm (1.2 in)	22 August 1954
Sep	29.2 mm (1.1 in)	19 September 1973
Oct	47.0 mm (1.9 in)	7 October 1930
Nov	21.6 mm (0.9 in)	12 November 1973
Dec	43.2 mm (1.7 in)	19 December 1932

Period of Record Coverage

1955 to 1983

29 years of record at Deer Park, 1955 to 1983. 1 years have data for under 90 percent of days and are left out of rankings: 1955.

Days with data per year at Deer Park
Year	Days with data	Share of year	Complete
1955	214	59%	No
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	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	365	100%	Yes
1979	364	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes

Latest Records

Latest records at Deer Park
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 December 1983	Deer Park, CA	daily snowfall	9.8 cm (3.9 in)	2.2 cm (0.9 in)	53 years	26 of 100 (Routine)
10 August 1983	Deer Park, CA	daily rain	21.0 mm (0.8 in)	17.6 mm (0.7 in)	0 years	20 of 100 (Routine)
25 July 1983	Deer Park, CA	daily rain	14.6 mm (0.6 in)	9.3 mm (0.37 in)	41 years	20 of 100 (Routine)
7 May 1983	Deer Park, CA	daily rain (Tie)	8.4 mm (0.33 in)	tie	8 years	2 of 100 (Routine)
10 April 1983	Deer Park, CA	daily rain	9.6 mm (0.38 in)	0.2 mm (0.01 in)	34 years	16 of 100 (Routine)
9 April 1983	Deer Park, CA	daily snowfall	0.4 cm (0.2 in)	0.4 cm (0.2 in)	58 years	20 of 100 (Routine)
26 January 1983	Deer Park, CA	daily rain	21.0 mm (0.8 in)	8.3 mm (0.33 in)	40 years	20 of 100 (Routine)
9 January 1983	Deer Park, CA	daily rain	13.8 mm (0.5 in)	3.6 mm (0.14 in)	32 years	20 of 100 (Routine)
20 December 1982	Deer Park, CA	daily snowfall	8.0 cm (3.1 in)	3.9 cm (1.5 in)	12 years	15 of 100 (Routine)
20 November 1982	Deer Park, CA	daily snowfall	10.2 cm (4.0 in)	6.4 cm (2.5 in)	41 years	30 of 100 (Routine)
20 November 1982	Deer Park, CA	daily rain	11.0 mm (0.4 in)	0.8 mm (0.03 in)	21 years	13 of 100 (Routine)
18 November 1982	Deer Park, CA	daily rain	11.4 mm (0.4 in)	0.2 mm (0.01 in)	56 years	20 of 100 (Routine)
16 November 1982	Deer Park, CA	daily rain	11.9 mm (0.5 in)	4.5 mm (0.18 in)	40 years	20 of 100 (Routine)
25 September 1982	Deer Park, CA	daily rain	8.7 mm (0.34 in)	1.1 mm (0.04 in)	32 years	16 of 100 (Routine)
3 September 1982	Deer Park, CA	daily rain (Tie)	10.2 mm (0.4 in)	tie	21 years	2 of 100 (Routine)
13 August 1982	Deer Park, CA	daily rain	12.6 mm (0.5 in)	1.2 mm (0.05 in)	31 years	16 of 100 (Routine)
10 August 1982	Deer Park, CA	daily rain	3.4 mm (0.13 in)	0.4 mm (0.02 in)	29 years	13 of 100 (Routine)
1 August 1982	Deer Park, CA	daily rain	9.8 mm (0.39 in)	1.7 mm (0.07 in)	5 years	9 of 100 (Routine)
11 March 1982	Deer Park, CA	daily rain	8.8 mm (0.35 in)	0.9 mm (0.04 in)	4 years	8 of 100 (Routine)
7 January 1982	Deer Park, CA	daily rain	17.0 mm (0.7 in)	0.5 mm (0.02 in)	4 years	7 of 100 (Routine)

Climate Trend

28 complete years, 1956 to 1983

One stripe for each of 28 complete years at Deer Park, 1956 to 1983. Blue stripes are years cooler than the station's own mean of 8.2 C (46.7 F); red stripes are warmer. The coolest year was 1972, at 7.4 C (45.2 F), and the warmest was 1958, at 9.8 C (49.6 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Deer Park as warming stripes, 1956 to 1983
Year	Annual mean temperature	Difference from the station mean
1956	8.0 C	-0.13 C
1957	7.8 C	-0.39 C
1958	9.8 C	+1.59 C
1959	7.6 C	-0.56 C
1960	8.0 C	-0.13 C
1961	8.8 C	+0.65 C
1962	8.3 C	+0.10 C
1963	8.9 C	+0.70 C
1964	7.8 C	-0.41 C
1965	8.6 C	+0.43 C
1966	8.6 C	+0.44 C
1967	9.3 C	+1.18 C
1968	8.0 C	-0.12 C
1969	8.2 C	-0.01 C
1970	8.2 C	+0.04 C
1971	7.8 C	-0.36 C
1972	7.4 C	-0.81 C
1973	8.4 C	+0.27 C
1974	8.6 C	+0.39 C
1975	7.6 C	-0.52 C
1976	7.7 C	-0.44 C
1977	7.8 C	-0.36 C
1978	7.4 C	-0.78 C
1979	8.0 C	-0.20 C
1980	8.0 C	-0.13 C
1981	8.2 C	+0.00 C
1982	7.4 C	-0.72 C
1983	8.4 C	+0.21 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

1924 to 1983

Yearly extremes at Deer Park: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.9 C (102.0 F)	1971	35.0 C (95.0 F)	29
Coldest night (TNn)	-27.8 C (-18.0 F)	1968	-17.2 C (1.0 F)	29
Wettest day (Rx1day)	47.0 mm (1.9 in)	1930	22.9 mm (0.9 in)	60
Wettest five days (Rx5day)	71.1 mm (2.8 in)	1965	42.7 mm (1.7 in)	60
Longest dry spell (CDD)	51 days	1939	27 days	60

Hottest day (TXx)

The hottest day of the year at Deer Park, 1924 to 1983. The record is 38.9 C (102.0 F) in 1971, marked on the chart; the median year is 35.0 C (95.0 F).

Hottest day (TXx) at Deer Park by year
Year	Hottest day (TXx)
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	33.3 C (91.9 F)
1956	34.4 C (93.9 F)
1957	32.2 C (90.0 F)
1958	36.1 C (97.0 F)
1959	35.6 C (96.1 F)
1960	38.3 C (100.9 F)
1961	35.6 C (96.1 F)
1962	36.1 C (97.0 F)
1963	33.3 C (91.9 F)
1964	35.0 C (95.0 F)
1965	36.1 C (97.0 F)
1966	34.4 C (93.9 F)
1967	37.8 C (100.0 F)
1968	35.6 C (96.1 F)
1969	34.4 C (93.9 F)
1970	37.2 C (99.0 F)
1971	38.9 C (102.0 F)
1972	34.4 C (93.9 F)
1973	37.8 C (100.0 F)
1974	36.7 C (98.1 F)
1975	38.3 C (100.9 F)
1976	33.9 C (93.0 F)
1977	35.0 C (95.0 F)
1978	35.6 C (96.1 F)
1979	35.0 C (95.0 F)
1980	33.5 C (92.3 F)
1981	32.0 C (89.6 F)
1982	32.5 C (90.5 F)
1983	35.0 C (95.0 F)

Coldest night (TNn)

The coldest night of the year at Deer Park, 1924 to 1983. The record is -27.8 C (-18.0 F) in 1968, marked on the chart; the median year is -17.2 C (1.0 F).

Coldest night (TNn) at Deer Park by year
Year	Coldest night (TNn)
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	-17.2 C (1.0 F)
1956	-20.6 C (-5.1 F)
1957	-18.9 C (-2.0 F)
1958	-11.1 C (12.0 F)
1959	-20.6 C (-5.1 F)
1960	-17.8 C (0.0 F)
1961	-13.9 C (7.0 F)
1962	-20.6 C (-5.1 F)
1963	-17.2 C (1.0 F)
1964	-23.3 C (-9.9 F)
1965	-12.2 C (10.0 F)
1966	-13.9 C (7.0 F)
1967	-11.1 C (12.0 F)
1968	-27.8 C (-18.0 F)
1969	-20.0 C (-4.0 F)
1970	-13.9 C (7.0 F)
1971	-13.3 C (8.1 F)
1972	-17.8 C (0.0 F)
1973	-15.0 C (5.0 F)
1974	-13.3 C (8.1 F)
1975	-17.8 C (0.0 F)
1976	-13.9 C (7.0 F)
1977	-15.0 C (5.0 F)
1978	-21.7 C (-7.1 F)
1979	-17.8 C (0.0 F)
1980	-17.0 C (1.4 F)
1981	-15.5 C (4.1 F)
1982	-19.0 C (-2.2 F)
1983	-20.5 C (-4.9 F)

Wettest day (Rx1day)

The wettest day of the year at Deer Park, 1924 to 1983. The record is 47.0 mm (1.9 in) in 1930, marked on the chart; the median year is 22.9 mm (0.9 in).

Wettest day (Rx1day) at Deer Park by year
Year	Wettest day (Rx1day)
1924	45.5 mm (1.8 in)
1925	10.2 mm (0.4 in)
1926	25.4 mm (1.0 in)
1927	36.3 mm (1.4 in)
1928	18.5 mm (0.7 in)
1929	15.0 mm (0.6 in)
1930	47.0 mm (1.9 in)
1931	28.4 mm (1.1 in)
1932	43.2 mm (1.7 in)
1933	23.6 mm (0.9 in)
1934	30.5 mm (1.2 in)
1935	19.1 mm (0.8 in)
1936	14.5 mm (0.6 in)
1937	25.4 mm (1.0 in)
1938	23.9 mm (0.9 in)
1939	23.1 mm (0.9 in)
1940	23.1 mm (0.9 in)
1941	25.4 mm (1.0 in)
1942	21.6 mm (0.9 in)
1943	35.6 mm (1.4 in)
1944	24.1 mm (0.9 in)
1945	23.4 mm (0.9 in)
1946	30.5 mm (1.2 in)
1947	22.9 mm (0.9 in)
1948	27.9 mm (1.1 in)
1949	17.8 mm (0.7 in)
1950	19.1 mm (0.8 in)
1951	29.2 mm (1.1 in)
1952	16.5 mm (0.6 in)
1953	21.6 mm (0.9 in)
1954	30.5 mm (1.2 in)
1955	17.8 mm (0.7 in)
1956	15.2 mm (0.6 in)
1957	20.3 mm (0.8 in)
1958	26.4 mm (1.0 in)
1959	23.6 mm (0.9 in)
1960	23.6 mm (0.9 in)
1961	22.9 mm (0.9 in)
1962	26.2 mm (1.0 in)
1963	19.6 mm (0.8 in)
1964	22.1 mm (0.9 in)
1965	25.4 mm (1.0 in)
1966	21.6 mm (0.9 in)
1967	17.8 mm (0.7 in)
1968	20.3 mm (0.8 in)
1969	30.5 mm (1.2 in)
1970	21.3 mm (0.8 in)
1971	20.6 mm (0.8 in)
1972	19.1 mm (0.8 in)
1973	29.2 mm (1.1 in)
1974	16.5 mm (0.6 in)
1975	20.8 mm (0.8 in)
1976	23.1 mm (0.9 in)
1977	19.6 mm (0.8 in)
1978	22.4 mm (0.9 in)
1979	22.6 mm (0.9 in)
1980	21.6 mm (0.9 in)
1981	25.2 mm (1.0 in)
1982	18.0 mm (0.7 in)
1983	21.0 mm (0.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Deer Park, 1924 to 1983. The record is 71.1 mm (2.8 in) in 1965, marked on the chart; the median year is 42.7 mm (1.7 in).

Wettest five days (Rx5day) at Deer Park by year
Year	Wettest five days (Rx5day)
1924	45.5 mm (1.8 in)
1925	18.0 mm (0.7 in)
1926	44.0 mm (1.7 in)
1927	40.1 mm (1.6 in)
1928	51.0 mm (2.0 in)
1929	33.8 mm (1.3 in)
1930	52.3 mm (2.1 in)
1931	51.3 mm (2.0 in)
1932	47.8 mm (1.9 in)
1933	43.7 mm (1.7 in)
1934	33.8 mm (1.3 in)
1935	42.7 mm (1.7 in)
1936	30.8 mm (1.2 in)
1937	63.5 mm (2.5 in)
1938	45.0 mm (1.8 in)
1939	35.6 mm (1.4 in)
1940	32.2 mm (1.3 in)
1941	44.5 mm (1.8 in)
1942	50.0 mm (2.0 in)
1943	45.2 mm (1.8 in)
1944	29.2 mm (1.1 in)
1945	59.2 mm (2.3 in)
1946	41.3 mm (1.6 in)
1947	54.6 mm (2.1 in)
1948	54.4 mm (2.1 in)
1949	29.2 mm (1.1 in)
1950	31.8 mm (1.3 in)
1951	58.4 mm (2.3 in)
1952	27.9 mm (1.1 in)
1953	59.7 mm (2.4 in)
1954	69.9 mm (2.8 in)
1955	37.3 mm (1.5 in)
1956	26.6 mm (1.0 in)
1957	37.4 mm (1.5 in)
1958	46.7 mm (1.8 in)
1959	41.7 mm (1.6 in)
1960	35.1 mm (1.4 in)
1961	39.6 mm (1.6 in)
1962	43.9 mm (1.7 in)
1963	31.7 mm (1.2 in)
1964	52.0 mm (2.0 in)
1965	71.1 mm (2.8 in)
1966	37.6 mm (1.5 in)
1967	28.9 mm (1.1 in)
1968	48.6 mm (1.9 in)
1969	45.0 mm (1.8 in)
1970	38.9 mm (1.5 in)
1971	44.0 mm (1.7 in)
1972	45.7 mm (1.8 in)
1973	61.0 mm (2.4 in)
1974	33.5 mm (1.3 in)
1975	35.1 mm (1.4 in)
1976	39.2 mm (1.5 in)
1977	43.8 mm (1.7 in)
1978	43.0 mm (1.7 in)
1979	36.6 mm (1.4 in)
1980	42.6 mm (1.7 in)
1981	42.6 mm (1.7 in)
1982	39.0 mm (1.5 in)
1983	33.0 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Deer Park, 1924 to 1983. The record is 51 days in 1939, marked on the chart; the median year is 27 days.

Longest dry spell (CDD) at Deer Park by year
Year	Longest dry spell (CDD)
1924	36 days
1925	36 days
1926	46 days
1927	31 days
1928	48 days
1929	20 days
1930	27 days
1931	28 days
1932	27 days
1933	25 days
1934	37 days
1935	28 days
1936	37 days
1937	31 days
1938	22 days
1939	51 days
1940	35 days
1941	23 days
1942	28 days
1943	36 days
1944	17 days
1945	40 days
1946	41 days
1947	18 days
1948	23 days
1949	23 days
1950	31 days
1951	46 days
1952	47 days
1953	16 days
1954	21 days
1955	41 days
1956	22 days
1957	19 days
1958	27 days
1959	23 days
1960	29 days
1961	20 days
1962	19 days
1963	20 days
1964	16 days
1965	25 days
1966	21 days
1967	29 days
1968	24 days
1969	27 days
1970	27 days
1971	49 days
1972	17 days
1973	48 days
1974	51 days
1975	32 days
1976	26 days
1977	25 days
1978	19 days
1979	34 days
1980	14 days
1981	21 days
1982	18 days
1983	33 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

28 years with a frost

Across 28 years with a frost, the median last spring frost at Deer Park falls on 5 May and the median first autumn frost on 14 October, which leaves a median of 162 days between them.

Fitted over all years, the growing season changes by +2.1 days per decade at this station.

Frost dates and growing season at Deer Park
Measure	Median, all years	Earliest period	Recent period (1956 to 1983)	Recent against earliest	Fitted trend
Last spring frost	5 May	n/a	5 May	n/a	-4.6 days per decade
First autumn frost	14 October	n/a	14 October	n/a	-2.5 days per decade
Growing days	162 days	n/a	162 days	n/a	+2.1 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

58 years, 1924 to 1983

A day with at least 22.6 mm (0.9 in) of rain is expected about once in 2 years. A day with at least 48.0 mm (1.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Deer Park: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	22.6 mm (0.9 in)
5 years	28.5 mm (1.1 in)
10 years	32.8 mm (1.3 in)
25 years	38.5 mm (1.5 in)
50 years	43.1 mm (1.7 in)
100 years	48.0 mm (1.9 in)	Longer than the 58 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, 58 years of values from 1924 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: 47.0 mm (1.9 in) in 1930; 45.5 mm (1.8 in) in 1924; 43.2 mm (1.7 in) in 1932.

Download the Data

Data for Deer Park standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Deer Park 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).