York Post Office Weather Records (ASN00010144)

Record envelope, standing records and threshold days for York Post Office (ASN00010144), Australia, with 120 years of record.

Key Facts for York Post Office

York Post Office (ASN00010144) is a weather station in Australia at -31.88 latitude and 116.76 longitude, 174 m (571 ft) above sea level.
The station reports from 1877 to 1996, 120 years of record.
1,464 records set at York Post Office still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
York Post Office set a daily record high minimum temperature of 15.4 C (59.7 F) on 9 May 1996.

About the Station

Location: Australia, -31.88 latitude, 116.76 longitude.
Elevation: 174 m (571 ft).
Period of record: 1877 to 1996, 120 years.
Eligible elements: tmax, tmin, prcp.

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 York Post Office. 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 York Post Office, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	45.7 C (114.3 F)	7.4 C (45.3 F)	n/a	n/a
Feb	46.3 C (115.3 F)	7.8 C (46.0 F)	n/a	n/a
Mar	43.4 C (110.1 F)	5.7 C (42.3 F)	n/a	n/a
Apr	39.0 C (102.2 F)	0.6 C (33.1 F)	n/a	n/a
May	34.4 C (93.9 F)	-3.2 C (26.2 F)	n/a	n/a
Jun	25.6 C (78.1 F)	-4.0 C (24.8 F)	n/a	n/a
Jul	25.4 C (77.7 F)	-3.6 C (25.5 F)	n/a	n/a
Aug	27.9 C (82.2 F)	-1.7 C (28.9 F)	n/a	n/a
Sep	33.3 C (91.9 F)	-1.8 C (28.8 F)	n/a	n/a
Oct	38.6 C (101.5 F)	-0.8 C (30.6 F)	n/a	n/a
Nov	42.3 C (108.1 F)	3.3 C (37.9 F)	n/a	n/a
Dec	45.0 C (113.0 F)	5.0 C (41.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at York Post Office still stand. 1964 holds the most, with 43.

Standing records at York Post Office by the year they were set
Year set	Standing records
1934	22
1935	17
1936	24
1937	20
1938	31
1939	22
1940	27
1941	16
1942	18
1943	11
1944	29
1945	18
1946	20
1947	21
1948	19
1949	24
1950	27
1951	29
1952	27
1953	18
1954	31
1955	28
1956	20
1957	28
1958	23
1959	27
1960	28
1961	29
1962	19
1963	18
1964	43
1965	18
1966	20
1967	19
1968	43
1969	33
1970	26
1971	24
1972	38
1974	20
1975	14
1976	17
1977	37
1978	22
1979	18
1980	25
1981	31
1982	26
1983	25
1984	17
1985	25
1986	12
1987	27
1988	20
1989	14
1990	32
1991	27
1992	24
1993	26
1994	29
1995	13
1996	8

All-Time Record Progression

3 new records

3 all-time records were set at York Post Office between 1 June 1964 and 23 February 1991. Each dot is a new record.

When York Post Office set new all-time records
Date	Kind	Detail
1964-06-01	Record low minimum temperature	Record low minimum temperature -4.0 C (24.8 F)
1977-01-04	Record high maximum temperature	Record high maximum temperature 45.7 C (114.3 F)
1991-02-23	Record high maximum temperature	Record high maximum temperature 46.3 C (115.3 F)

Wettest Day of Each Month

Mar: 146.8 mm (5.8 in)

The wettest day on record for each calendar month at York Post Office. The most was 146.8 mm (5.8 in) on 9 March 1934.

Record daily precipitation for each month at York Post Office
Month	Record daily precipitation (mm)	Date
Jan	111.4 mm (4.4 in)	29 January 1990
Feb	112.8 mm (4.4 in)	16 February 1955
Mar	146.8 mm (5.8 in)	9 March 1934
Apr	49.8 mm (2.0 in)	4 April 1974
May	62.5 mm (2.5 in)	9 May 1950
Jun	56.6 mm (2.2 in)	18 June 1945
Jul	39.1 mm (1.5 in)	10 July 1952
Aug	34.8 mm (1.4 in)	22 August 1945
Sep	26.2 mm (1.0 in)	30 September 1971
Oct	71.0 mm (2.8 in)	18 October 1995
Nov	31.8 mm (1.3 in)	17 November 1983
Dec	47.2 mm (1.9 in)	25 December 1991

Period of Record Coverage

1934 to 1996

62 years of record at York Post Office, 1934 to 1996. 5 years have data for under 90 percent of days and are left out of rankings: 1955, 1968, 1975, 1976, 1996.

Days with data per year at York Post Office
Year	Days with data	Share of year	Complete
1934	365	100%	Yes
1935	365	100%	Yes
1936	366	100%	Yes
1937	365	100%	Yes
1938	365	100%	Yes
1939	365	100%	Yes
1940	366	100%	Yes
1941	365	100%	Yes
1942	365	100%	Yes
1943	365	100%	Yes
1944	366	100%	Yes
1945	365	100%	Yes
1946	365	100%	Yes
1947	364	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
1952	362	99%	Yes
1953	365	100%	Yes
1954	358	98%	Yes
1955	326	89%	No
1956	354	97%	Yes
1957	358	98%	Yes
1958	364	100%	Yes
1959	362	99%	Yes
1960	364	99%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	365	100%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	300	82%	No
1969	362	99%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1974	364	100%	Yes
1975	306	84%	No
1976	329	90%	No
1977	364	100%	Yes
1978	358	98%	Yes
1979	359	98%	Yes
1980	361	99%	Yes
1981	358	98%	Yes
1982	358	98%	Yes
1983	363	99%	Yes
1984	364	99%	Yes
1985	354	97%	Yes
1986	359	98%	Yes
1987	356	98%	Yes
1988	359	98%	Yes
1989	361	99%	Yes
1990	361	99%	Yes
1991	363	99%	Yes
1992	364	99%	Yes
1993	364	100%	Yes
1994	363	99%	Yes
1995	359	98%	Yes
1996	127	35%	No

Latest Records

Latest records at York Post Office
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1996	York Post Office, AU	daily high min	15.4 C (59.7 F)	0.4 C (0.7 F)	37 years	18 of 100 (Routine)
6 May 1996	York Post Office, AU	daily high max	30.6 C (87.1 F)	0.3 C (0.5 F)	27 years	14 of 100 (Routine)
19 April 1996	York Post Office, AU	daily high min	19.5 C (67.1 F)	2.0 C (3.6 F)	17 years	16 of 100 (Routine)
18 April 1996	York Post Office, AU	daily high max	35.0 C (95.0 F)	0.8 C (1.4 F)	51 years	22 of 100 (Routine)
10 April 1996	York Post Office, AU	daily high max	37.3 C (99.1 F)	1.6 C (2.9 F)	46 years	22 of 100 (Routine)
11 March 1996	York Post Office, AU	daily rain	0.4 mm (0.02 in)	0.4 mm (0.02 in)	118 years	20 of 100 (Routine)
9 March 1996	York Post Office, AU	daily high max	41.3 C (106.3 F)	0.3 C (0.5 F)	32 years	15 of 100 (Routine)
13 February 1996	York Post Office, AU	daily high min (Tie)	21.3 C (70.3 F)	tie	44 years	4 of 100 (Routine)
12 February 1996	York Post Office, AU	daily high max	43.0 C (109.4 F)	1.1 C (2.0 F)	56 years	25 of 100 (Routine)
8 January 1996	York Post Office, AU	daily high max	42.3 C (108.1 F)	1.3 C (2.3 F)	2 years	8 of 100 (Routine)
23 December 1995	York Post Office, AU	daily rain	3.6 mm (0.14 in)	3.3 mm (0.13 in)	24 years	20 of 100 (Routine)
10 November 1995	York Post Office, AU	daily low min (Tie)	6.7 C (44.1 F)	tie	29 years	3 of 100 (Routine)
18 October 1995	York Post Office, AU	monthly rain	71.0 mm (2.8 in)	8.8 mm (0.35 in)	15 years	39 of 100 (Notable)
16 October 1995	York Post Office, AU	daily high max	35.0 C (95.0 F)	1.6 C (2.9 F)	22 years	15 of 100 (Routine)
13 September 1995	York Post Office, AU	daily rain	11.6 mm (0.5 in)	0.4 mm (0.02 in)	44 years	20 of 100 (Routine)
30 August 1995	York Post Office, AU	daily low max	14.3 C (57.7 F)	0.1 C (0.2 F)	57 years	23 of 100 (Routine)
28 August 1995	York Post Office, AU	daily high max	26.2 C (79.2 F)	1.8 C (3.2 F)	36 years	23 of 100 (Routine)
13 August 1995	York Post Office, AU	daily rain	15.2 mm (0.6 in)	0.4 mm (0.02 in)	18 years	15 of 100 (Routine)
10 August 1995	York Post Office, AU	daily high min	12.3 C (54.1 F)	0.6 C (1.1 F)	36 years	17 of 100 (Routine)
20 July 1995	York Post Office, AU	daily rain	18.4 mm (0.7 in)	0.6 mm (0.02 in)	34 years	20 of 100 (Routine)

Climate Trend

58 complete years, 1934 to 1995

One stripe for each of 58 complete years at York Post Office, 1934 to 1995. Blue stripes are years cooler than the station's own mean of 17.8 C (64.0 F); red stripes are warmer. The coolest year was 1971, at 16.7 C (62.1 F), and the warmest was 1994, at 18.6 C (65.5 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at York Post Office as warming stripes, 1934 to 1995
Year	Annual mean temperature	Difference from the station mean
1934	17.3 C	-0.44 C
1935	17.1 C	-0.65 C
1936	18.0 C	+0.19 C
1937	17.7 C	-0.05 C
1938	17.7 C	-0.06 C
1939	17.8 C	+0.06 C
1940	18.0 C	+0.18 C
1941	17.7 C	-0.06 C
1942	17.3 C	-0.48 C
1943	17.3 C	-0.45 C
1944	17.7 C	-0.06 C
1945	18.2 C	+0.46 C
1946	17.6 C	-0.19 C
1947	17.5 C	-0.30 C
1948	17.9 C	+0.13 C
1949	18.1 C	+0.33 C
1950	17.9 C	+0.12 C
1951	17.5 C	-0.28 C
1952	17.3 C	-0.48 C
1953	17.6 C	-0.21 C
1954	17.5 C	-0.23 C
1955	17.0 C	-0.76 C
1956	17.3 C	-0.44 C
1957	18.1 C	+0.31 C
1958	18.1 C	+0.33 C
1959	18.3 C	+0.50 C
1960	16.9 C	-0.87 C
1961	18.2 C	+0.38 C
1962	18.2 C	+0.45 C
1963	18.3 C	+0.54 C
1964	17.3 C	-0.47 C
1965	17.9 C	+0.13 C
1966	17.2 C	-0.56 C
1967	18.1 C	+0.32 C
1969	17.7 C	-0.03 C
1970	17.9 C	+0.08 C
1971	16.7 C	-1.05 C
1972	18.5 C	+0.77 C
1974	17.6 C	-0.20 C
1977	18.2 C	+0.45 C
1978	18.1 C	+0.31 C
1979	17.5 C	-0.25 C
1980	17.8 C	+0.05 C
1981	17.4 C	-0.42 C
1982	17.7 C	-0.09 C
1983	18.6 C	+0.81 C
1984	17.5 C	-0.28 C
1985	18.2 C	+0.45 C
1986	17.1 C	-0.70 C
1987	18.0 C	+0.19 C
1988	18.2 C	+0.46 C
1989	17.7 C	-0.03 C
1990	17.5 C	-0.32 C
1991	18.5 C	+0.68 C
1992	18.0 C	+0.18 C
1993	17.8 C	+0.03 C
1994	18.6 C	+0.85 C
1995	18.2 C	+0.40 C

The annual mean temperature here has risen by 0.06 C (0.00 to 0.12) per decade over 1934 to 1995. In Fahrenheit: 0.12 F (0.01 to 0.22) per decade. The slope is a straight line fitted to 58 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at York Post Office
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.06 C (0.00 to 0.12) per decade	0.12 F (0.01 to 0.22) per decade	1934 to 1995	58	Rise
Mean daily maximum	0.09 C (0.01 to 0.17) per decade	0.16 F (0.01 to 0.31) per decade	1934 to 1995	58	Rise
Mean daily minimum	0.04 C (-0.03 to 0.10) per decade	0.1 F (-0.1 to 0.2) per decade	1934 to 1995	58	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

1877 to 1996

Yearly extremes at York Post Office: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.3 C (115.3 F)	1991	43.2 C (109.7 F)	62
Coldest night (TNn)	-4.0 C (24.8 F)	1964	-0.8 C (30.5 F)	62
Wettest day (Rx1day)	146.8 mm (5.8 in)	1934	29.6 mm (1.2 in)	92
Wettest five days (Rx5day)	183.7 mm (7.2 in)	1955	47.3 mm (1.9 in)	92
Longest dry spell (CDD)	140 days	1994	41 days	92

Hottest day (TXx)

The hottest day of the year at York Post Office, 1877 to 1996. The record is 46.3 C (115.3 F) in 1991, marked on the chart; the median year is 43.2 C (109.7 F).

Hottest day (TXx) at York Post Office by year
Year	Hottest day (TXx)
1877	n/a
1878	n/a
1879	n/a
1884	n/a
1886	n/a
1890	n/a
1891	n/a
1894	n/a
1895	n/a
1897	n/a
1899	n/a
1902	n/a
1903	n/a
1906	n/a
1907	n/a
1913	n/a
1914	n/a
1916	n/a
1917	n/a
1918	n/a
1920	n/a
1921	n/a
1923	n/a
1924	n/a
1926	n/a
1928	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	44.4 C (111.9 F)
1935	42.2 C (108.0 F)
1936	42.1 C (107.8 F)
1937	41.7 C (107.1 F)
1938	41.8 C (107.2 F)
1939	44.4 C (111.9 F)
1940	44.6 C (112.3 F)
1941	43.4 C (110.1 F)
1942	43.1 C (109.6 F)
1943	39.9 C (103.8 F)
1944	45.1 C (113.2 F)
1945	42.5 C (108.5 F)
1946	41.8 C (107.2 F)
1947	41.7 C (107.1 F)
1948	42.0 C (107.6 F)
1949	42.4 C (108.3 F)
1950	42.8 C (109.0 F)
1951	42.8 C (109.0 F)
1952	42.6 C (108.7 F)
1953	44.6 C (112.3 F)
1954	45.0 C (113.0 F)
1955	41.1 C (106.0 F)
1956	44.4 C (111.9 F)
1957	42.8 C (109.0 F)
1958	44.4 C (111.9 F)
1959	43.3 C (109.9 F)
1960	41.1 C (106.0 F)
1961	45.6 C (114.1 F)
1962	43.9 C (111.0 F)
1963	42.2 C (108.0 F)
1964	42.2 C (108.0 F)
1965	42.5 C (108.5 F)
1966	41.7 C (107.1 F)
1967	42.3 C (108.1 F)
1968	45.0 C (113.0 F)
1969	45.0 C (113.0 F)
1970	42.7 C (108.9 F)
1971	41.8 C (107.2 F)
1972	43.6 C (110.5 F)
1973	n/a
1974	43.6 C (110.5 F)
1975	45.4 C (113.7 F)
1976	43.1 C (109.6 F)
1977	45.7 C (114.3 F)
1978	44.1 C (111.4 F)
1979	43.5 C (110.3 F)
1980	45.6 C (114.1 F)
1981	43.4 C (110.1 F)
1982	43.7 C (110.7 F)
1983	42.9 C (109.2 F)
1984	44.2 C (111.6 F)
1985	45.2 C (113.4 F)
1986	43.3 C (109.9 F)
1987	43.1 C (109.6 F)
1988	43.1 C (109.6 F)
1989	44.7 C (112.5 F)
1990	42.4 C (108.3 F)
1991	46.3 C (115.3 F)
1992	40.7 C (105.3 F)
1993	44.3 C (111.7 F)
1994	44.3 C (111.7 F)
1995	43.2 C (109.8 F)
1996	43.0 C (109.4 F)

Coldest night (TNn)

The coldest night of the year at York Post Office, 1877 to 1996. The record is -4.0 C (24.8 F) in 1964, marked on the chart; the median year is -0.8 C (30.5 F).

Coldest night (TNn) at York Post Office by year
Year	Coldest night (TNn)
1877	n/a
1878	n/a
1879	n/a
1884	n/a
1886	n/a
1890	n/a
1891	n/a
1894	n/a
1895	n/a
1897	n/a
1899	n/a
1902	n/a
1903	n/a
1906	n/a
1907	n/a
1913	n/a
1914	n/a
1916	n/a
1917	n/a
1918	n/a
1920	n/a
1921	n/a
1923	n/a
1924	n/a
1926	n/a
1928	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	-0.8 C (30.6 F)
1935	0.0 C (32.0 F)
1936	-1.1 C (30.0 F)
1937	-2.2 C (28.0 F)
1938	-0.8 C (30.6 F)
1939	-0.6 C (30.9 F)
1940	-3.6 C (25.5 F)
1941	0.1 C (32.2 F)
1942	-1.9 C (28.6 F)
1943	-2.1 C (28.2 F)
1944	-0.7 C (30.7 F)
1945	1.6 C (34.9 F)
1946	0.0 C (32.0 F)
1947	-1.1 C (30.0 F)
1948	-1.1 C (30.0 F)
1949	0.0 C (32.0 F)
1950	-1.0 C (30.2 F)
1951	-2.7 C (27.1 F)
1952	-0.6 C (30.9 F)
1953	0.1 C (32.2 F)
1954	0.0 C (32.0 F)
1955	-1.7 C (28.9 F)
1956	-0.6 C (30.9 F)
1957	-1.1 C (30.0 F)
1958	0.6 C (33.1 F)
1959	0.0 C (32.0 F)
1960	-1.1 C (30.0 F)
1961	-3.9 C (25.0 F)
1962	-0.6 C (30.9 F)
1963	1.1 C (34.0 F)
1964	-4.0 C (24.8 F)
1965	0.2 C (32.4 F)
1966	-1.6 C (29.1 F)
1967	-0.6 C (30.9 F)
1968	-1.1 C (30.0 F)
1969	-1.7 C (28.9 F)
1970	-1.7 C (28.9 F)
1971	-2.6 C (27.3 F)
1972	-1.2 C (29.8 F)
1973	n/a
1974	-0.7 C (30.7 F)
1975	-0.7 C (30.7 F)
1976	-1.0 C (30.2 F)
1977	-1.8 C (28.8 F)
1978	-1.3 C (29.7 F)
1979	-1.5 C (29.3 F)
1980	-0.5 C (31.1 F)
1981	-1.7 C (28.9 F)
1982	-1.3 C (29.7 F)
1983	0.0 C (32.0 F)
1984	0.1 C (32.2 F)
1985	0.0 C (32.0 F)
1986	-0.7 C (30.7 F)
1987	-3.4 C (25.9 F)
1988	0.0 C (32.0 F)
1989	-1.0 C (30.2 F)
1990	-1.9 C (28.6 F)
1991	-0.9 C (30.4 F)
1992	0.0 C (32.0 F)
1993	-1.0 C (30.2 F)
1994	-0.7 C (30.7 F)
1995	1.0 C (33.8 F)
1996	6.2 C (43.2 F)

Wettest day (Rx1day)

The wettest day of the year at York Post Office, 1877 to 1996. The record is 146.8 mm (5.8 in) in 1934, marked on the chart; the median year is 29.6 mm (1.2 in).

Wettest day (Rx1day) at York Post Office by year
Year	Wettest day (Rx1day)
1877	0.0 mm (0.00 in)
1878	0.0 mm (0.00 in)
1879	0.0 mm (0.00 in)
1884	0.0 mm (0.00 in)
1886	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1891	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	0.0 mm (0.00 in)
1913	0.0 mm (0.00 in)
1914	0.0 mm (0.00 in)
1916	0.0 mm (0.00 in)
1917	0.0 mm (0.00 in)
1918	0.0 mm (0.00 in)
1920	0.0 mm (0.00 in)
1921	0.0 mm (0.00 in)
1923	0.0 mm (0.00 in)
1924	0.0 mm (0.00 in)
1926	0.0 mm (0.00 in)
1928	0.0 mm (0.00 in)
1930	0.0 mm (0.00 in)
1931	0.0 mm (0.00 in)
1932	0.0 mm (0.00 in)
1933	0.0 mm (0.00 in)
1934	146.8 mm (5.8 in)
1935	29.2 mm (1.1 in)
1936	39.6 mm (1.6 in)
1937	53.6 mm (2.1 in)
1938	31.2 mm (1.2 in)
1939	51.3 mm (2.0 in)
1940	37.1 mm (1.5 in)
1941	27.7 mm (1.1 in)
1942	26.2 mm (1.0 in)
1943	29.0 mm (1.1 in)
1944	33.5 mm (1.3 in)
1945	56.6 mm (2.2 in)
1946	34.8 mm (1.4 in)
1947	30.2 mm (1.2 in)
1948	33.3 mm (1.3 in)
1949	26.7 mm (1.1 in)
1950	62.5 mm (2.5 in)
1951	24.6 mm (1.0 in)
1952	46.5 mm (1.8 in)
1953	39.9 mm (1.6 in)
1954	30.5 mm (1.2 in)
1955	112.8 mm (4.4 in)
1956	25.4 mm (1.0 in)
1957	33.8 mm (1.3 in)
1958	28.7 mm (1.1 in)
1959	24.1 mm (0.9 in)
1960	54.4 mm (2.1 in)
1961	43.9 mm (1.7 in)
1962	38.6 mm (1.5 in)
1963	30.0 mm (1.2 in)
1964	44.2 mm (1.7 in)
1965	39.6 mm (1.6 in)
1966	35.3 mm (1.4 in)
1967	n/a
1968	45.5 mm (1.8 in)
1969	32.8 mm (1.3 in)
1970	37.1 mm (1.5 in)
1971	26.2 mm (1.0 in)
1972	31.2 mm (1.2 in)
1973	36.8 mm (1.4 in)
1974	49.8 mm (2.0 in)
1975	30.8 mm (1.2 in)
1976	48.8 mm (1.9 in)
1977	49.6 mm (2.0 in)
1978	38.4 mm (1.5 in)
1979	28.8 mm (1.1 in)
1980	62.2 mm (2.4 in)
1981	51.2 mm (2.0 in)
1982	40.6 mm (1.6 in)
1983	40.6 mm (1.6 in)
1984	28.0 mm (1.1 in)
1985	23.2 mm (0.9 in)
1986	77.2 mm (3.0 in)
1987	52.2 mm (2.1 in)
1988	29.2 mm (1.1 in)
1989	36.4 mm (1.4 in)
1990	111.4 mm (4.4 in)
1991	47.2 mm (1.9 in)
1992	31.4 mm (1.2 in)
1993	36.8 mm (1.4 in)
1994	25.2 mm (1.0 in)
1995	71.0 mm (2.8 in)
1996	7.4 mm (0.29 in)

Wettest five days (Rx5day)

The wettest five days of the year at York Post Office, 1877 to 1996. The record is 183.7 mm (7.2 in) in 1955, marked on the chart; the median year is 47.3 mm (1.9 in).

Wettest five days (Rx5day) at York Post Office by year
Year	Wettest five days (Rx5day)
1877	0.0 mm (0.00 in)
1878	0.0 mm (0.00 in)
1879	0.0 mm (0.00 in)
1884	0.0 mm (0.00 in)
1886	0.0 mm (0.00 in)
1890	0.0 mm (0.00 in)
1891	0.0 mm (0.00 in)
1894	0.0 mm (0.00 in)
1895	0.0 mm (0.00 in)
1897	0.0 mm (0.00 in)
1899	0.0 mm (0.00 in)
1902	0.0 mm (0.00 in)
1903	0.0 mm (0.00 in)
1906	0.0 mm (0.00 in)
1907	0.0 mm (0.00 in)
1913	0.0 mm (0.00 in)
1914	0.0 mm (0.00 in)
1916	0.0 mm (0.00 in)
1917	0.0 mm (0.00 in)
1918	0.0 mm (0.00 in)
1920	0.0 mm (0.00 in)
1921	0.0 mm (0.00 in)
1923	0.0 mm (0.00 in)
1924	0.0 mm (0.00 in)
1926	0.0 mm (0.00 in)
1928	0.0 mm (0.00 in)
1930	0.0 mm (0.00 in)
1931	0.0 mm (0.00 in)
1932	0.0 mm (0.00 in)
1933	0.0 mm (0.00 in)
1934	159.3 mm (6.3 in)
1935	42.7 mm (1.7 in)
1936	64.0 mm (2.5 in)
1937	77.0 mm (3.0 in)
1938	56.8 mm (2.2 in)
1939	87.3 mm (3.4 in)
1940	42.0 mm (1.7 in)
1941	41.4 mm (1.6 in)
1942	43.9 mm (1.7 in)
1943	70.9 mm (2.8 in)
1944	33.5 mm (1.3 in)
1945	116.3 mm (4.6 in)
1946	49.7 mm (2.0 in)
1947	49.0 mm (1.9 in)
1948	61.5 mm (2.4 in)
1949	35.1 mm (1.4 in)
1950	85.6 mm (3.4 in)
1951	40.4 mm (1.6 in)
1952	59.7 mm (2.4 in)
1953	73.4 mm (2.9 in)
1954	52.8 mm (2.1 in)
1955	183.7 mm (7.2 in)
1956	81.8 mm (3.2 in)
1957	78.2 mm (3.1 in)
1958	73.9 mm (2.9 in)
1959	63.5 mm (2.5 in)
1960	79.3 mm (3.1 in)
1961	85.3 mm (3.4 in)
1962	73.6 mm (2.9 in)
1963	77.7 mm (3.1 in)
1964	64.2 mm (2.5 in)
1965	82.5 mm (3.2 in)
1966	52.8 mm (2.1 in)
1967	n/a
1968	63.0 mm (2.5 in)
1969	41.0 mm (1.6 in)
1970	48.3 mm (1.9 in)
1971	51.3 mm (2.0 in)
1972	37.9 mm (1.5 in)
1973	60.6 mm (2.4 in)
1974	58.4 mm (2.3 in)
1975	71.0 mm (2.8 in)
1976	71.4 mm (2.8 in)
1977	62.6 mm (2.5 in)
1978	65.8 mm (2.6 in)
1979	48.8 mm (1.9 in)
1980	65.0 mm (2.6 in)
1981	73.6 mm (2.9 in)
1982	74.0 mm (2.9 in)
1983	88.2 mm (3.5 in)
1984	43.6 mm (1.7 in)
1985	34.4 mm (1.4 in)
1986	105.2 mm (4.1 in)
1987	65.2 mm (2.6 in)
1988	38.2 mm (1.5 in)
1989	54.4 mm (2.1 in)
1990	121.4 mm (4.8 in)
1991	60.8 mm (2.4 in)
1992	42.2 mm (1.7 in)
1993	46.2 mm (1.8 in)
1994	44.8 mm (1.8 in)
1995	78.8 mm (3.1 in)
1996	11.6 mm (0.5 in)

Longest dry spell (CDD)

The longest dry spell of the year at York Post Office, 1877 to 1996. The record is 140 days in 1994, marked on the chart; the median year is 41 days.

Longest dry spell (CDD) at York Post Office by year
Year	Longest dry spell (CDD)
1877	90 days
1878	59 days
1879	30 days
1884	31 days
1886	31 days
1890	31 days
1891	31 days
1894	31 days
1895	31 days
1897	31 days
1899	31 days
1902	61 days
1903	31 days
1906	28 days
1907	28 days
1913	31 days
1914	31 days
1916	31 days
1917	31 days
1918	31 days
1920	31 days
1921	31 days
1923	30 days
1924	31 days
1926	31 days
1928	29 days
1930	59 days
1931	59 days
1932	29 days
1933	31 days
1934	51 days
1935	33 days
1936	45 days
1937	41 days
1938	58 days
1939	52 days
1940	75 days
1941	56 days
1942	39 days
1943	35 days
1944	73 days
1945	57 days
1946	63 days
1947	56 days
1948	79 days
1949	47 days
1950	70 days
1951	35 days
1952	40 days
1953	45 days
1954	80 days
1955	36 days
1956	59 days
1957	69 days
1958	61 days
1959	39 days
1960	77 days
1961	56 days
1962	80 days
1963	36 days
1964	86 days
1965	35 days
1966	50 days
1967	n/a
1968	32 days
1969	62 days
1970	58 days
1971	38 days
1972	64 days
1973	80 days
1974	62 days
1975	58 days
1976	44 days
1977	33 days
1978	28 days
1979	44 days
1980	51 days
1981	47 days
1982	40 days
1983	45 days
1984	52 days
1985	33 days
1986	48 days
1987	75 days
1988	60 days
1989	47 days
1990	26 days
1991	38 days
1992	32 days
1993	40 days
1994	140 days
1995	34 days
1996	37 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

35 years with a frost

Across 35 years with a frost, the median last spring frost at York Post Office falls on 17 August and the median first autumn frost on 24 June, which leaves a median of 317 days between them.

Fitted over all years, the growing season changes by +3.9 days per decade at this station.

Frost dates and growing season at York Post Office
Measure	Median, all years	Earliest period	Recent period (1943 to 1993)	Recent against earliest	Fitted trend
Last spring frost	17 August	n/a	17 August	n/a	+0.1 days per decade
First autumn frost	24 June	n/a	27 June	n/a	+4.0 days per decade
Growing days	317 days	n/a	316 days	n/a	+3.9 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

61 years, 1934 to 1995

A day with at least 36.3 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 139.6 mm (5.5 in) of rain is expected about once in 100 years.

Rainfall return levels at York Post Office: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	36.3 mm (1.4 in)
5 years	50.8 mm (2.0 in)
10 years	64.2 mm (2.5 in)
25 years	87.2 mm (3.4 in)
50 years	110.2 mm (4.3 in)
100 years	139.6 mm (5.5 in)	Longer than the 61 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, 61 years of values from 1934 to 1995.

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: 146.8 mm (5.8 in) in 1934; 112.8 mm (4.4 in) in 1955; 111.4 mm (4.4 in) in 1990.

Station Changes

1 suspected

One change was suspected in the annual mean temperature of York Post Office, at 1990. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1990 ran 0.2 C (0.4 F) higher than in the years before (likely change).

Suspected changes in the annual mean temperature at York Post Office, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1990	+0.2	+0.4	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 York Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
Data for York Post Office 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).