Wellington Research Centre Weather Records (ASN00065035)

Record envelope, standing records and threshold days for Wellington Research Centre (ASN00065035), Australia, with 60 years of record.

Key Facts for Wellington Research Centre

Wellington Research Centre (ASN00065035) is a weather station in Australia at -32.51 latitude and 148.97 longitude, 390 m (1,280 ft) above sea level.
The station reports from 1946 to 2005, 60 years of record.
1,464 records set at Wellington Research Centre still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Wellington Research Centre set a daily record low minimum temperature of 8.1 C (46.6 F) on 18 February 2005.

About the Station

Location: Australia, -32.51 latitude, 148.97 longitude.
Elevation: 390 m (1,280 ft).
Period of record: 1946 to 2005, 60 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 Wellington Research Centre. 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 Wellington Research Centre, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	42.0 C (107.6 F)	6.6 C (43.9 F)	n/a	n/a
Feb	44.3 C (111.7 F)	7.1 C (44.8 F)	n/a	n/a
Mar	38.8 C (101.8 F)	2.5 C (36.5 F)	n/a	n/a
Apr	34.0 C (93.2 F)	0.4 C (32.7 F)	n/a	n/a
May	26.1 C (79.0 F)	-3.2 C (26.2 F)	n/a	n/a
Jun	22.6 C (72.7 F)	-4.1 C (24.6 F)	n/a	n/a
Jul	21.5 C (70.7 F)	-4.2 C (24.4 F)	n/a	n/a
Aug	26.6 C (79.9 F)	-7.4 C (18.7 F)	n/a	n/a
Sep	34.0 C (93.2 F)	-2.7 C (27.1 F)	n/a	n/a
Oct	39.6 C (103.3 F)	0.5 C (32.9 F)	n/a	n/a
Nov	41.9 C (107.4 F)	1.4 C (34.5 F)	n/a	n/a
Dec	41.7 C (107.1 F)	5.4 C (41.7 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Wellington Research Centre still stand. 1965 holds the most, with 66.

Standing records at Wellington Research Centre by the year they were set
Year set	Standing records
1965	66
1966	43
1967	30
1968	56
1969	45
1970	42
1971	25
1972	41
1973	38
1974	49
1975	45
1976	29
1977	17
1978	29
1979	29
1980	40
1981	25
1982	45
1983	43
1984	35
1985	23
1986	33
1987	28
1988	37
1989	27
1990	30
1991	26
1992	23
1993	27
1994	41
1995	41
1996	29
1997	29
1998	48
1999	20
2000	30
2001	43
2002	46
2003	42
2004	58
2005	11

All-Time Record Progression

3 new records

3 all-time records were set at Wellington Research Centre between 15 January 2001 and 15 February 2004. Each dot is a new record.

When Wellington Research Centre set new all-time records
Date	Kind	Detail
2001-01-15	Record high maximum temperature	Record high maximum temperature 42.0 C (107.6 F)
2001-01-24	Record high minimum temperature	Record high minimum temperature 29.1 C (84.4 F)
2004-02-15	Record high maximum temperature	Record high maximum temperature 44.3 C (111.7 F)

Wettest Day of Each Month

Feb: 179.8 mm (7.1 in)

The wettest day on record for each calendar month at Wellington Research Centre. The most was 179.8 mm (7.1 in) on 24 February 1955.

Record daily precipitation for each month at Wellington Research Centre
Month	Record daily precipitation (mm)	Date
Jan	89.9 mm (3.5 in)	19 January 1950
Feb	179.8 mm (7.1 in)	24 February 1955
Mar	95.0 mm (3.7 in)	11 March 2000
Apr	96.0 mm (3.8 in)	20 April 1990
May	41.2 mm (1.6 in)	14 May 1995
Jun	51.4 mm (2.0 in)	10 June 1991
Jul	61.0 mm (2.4 in)	25 July 1990
Aug	55.2 mm (2.2 in)	24 August 2003
Sep	43.0 mm (1.7 in)	11 September 1979
Oct	47.2 mm (1.9 in)	3 October 1973
Nov	67.1 mm (2.6 in)	6 November 1969
Dec	47.8 mm (1.9 in)	31 December 1957

Period of Record Coverage

1965 to 2005

41 years of record at Wellington Research Centre, 1965 to 2005. 1 years have data for under 90 percent of days and are left out of rankings: 2005.

Days with data per year at Wellington Research Centre
Year	Days with data	Share of year	Complete
1965	331	91%	Yes
1966	365	100%	Yes
1967	335	92%	Yes
1968	357	98%	Yes
1969	360	99%	Yes
1970	363	99%	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	365	100%	Yes
1979	365	100%	Yes
1980	366	100%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	365	100%	Yes
1984	366	100%	Yes
1985	365	100%	Yes
1986	364	100%	Yes
1987	364	100%	Yes
1988	363	99%	Yes
1989	359	98%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	362	99%	Yes
1993	365	100%	Yes
1994	364	100%	Yes
1995	362	99%	Yes
1996	366	100%	Yes
1997	362	99%	Yes
1998	365	100%	Yes
1999	364	100%	Yes
2000	361	99%	Yes
2001	364	100%	Yes
2002	362	99%	Yes
2003	361	99%	Yes
2004	356	97%	Yes
2005	48	13%	No

Latest Records

Latest records at Wellington Research Centre
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 February 2005	Wellington Research Centre, AU	daily low min	8.1 C (46.6 F)	2.5 C (4.5 F)	35 years	22 of 100 (Routine)
6 February 2005	Wellington Research Centre, AU	daily low min	11.3 C (52.3 F)	0.6 C (1.1 F)	27 years	13 of 100 (Routine)
5 February 2005	Wellington Research Centre, AU	daily low min	11.4 C (52.5 F)	2.9 C (5.2 F)	21 years	19 of 100 (Routine)
5 February 2005	Wellington Research Centre, AU	daily low max (Tie)	25.7 C (78.3 F)	tie	3 years	1 of 100 (Routine)
4 February 2005	Wellington Research Centre, AU	daily low min	9.1 C (48.4 F)	4.0 C (7.2 F)	18 years	21 of 100 (Routine)
3 February 2005	Wellington Research Centre, AU	daily low min	7.6 C (45.7 F)	4.1 C (7.4 F)	1 year	17 of 100 (Routine)
3 February 2005	Wellington Research Centre, AU	daily low max	22.6 C (72.7 F)	0.4 C (0.7 F)	15 years	8 of 100 (Routine)
1 February 2005	Wellington Research Centre, AU	daily high max	39.2 C (102.6 F)	0.2 C (0.4 F)	18 years	9 of 100 (Routine)
15 January 2005	Wellington Research Centre, AU	daily high min	25.7 C (78.3 F)	1.7 C (3.1 F)	20 years	14 of 100 (Routine)
14 January 2005	Wellington Research Centre, AU	daily high max	40.4 C (104.7 F)	1.9 C (3.4 F)	20 years	14 of 100 (Routine)
11 January 2005	Wellington Research Centre, AU	daily low min	10.3 C (50.5 F)	0.4 C (0.7 F)	30 years	14 of 100 (Routine)
7 January 2005	Wellington Research Centre, AU	daily low min	9.7 C (49.5 F)	0.7 C (1.3 F)	14 years	10 of 100 (Routine)
29 December 2004	Wellington Research Centre, AU	daily low min	7.7 C (45.9 F)	2.3 C (4.1 F)	4 years	11 of 100 (Routine)
1 December 2004	Wellington Research Centre, AU	daily high min	25.0 C (77.0 F)	3.7 C (6.7 F)	38 years	25 of 100 (Routine)
30 November 2004	Wellington Research Centre, AU	monthly high max	41.9 C (107.4 F)	0.8 C (1.4 F)	7 years	17 of 100 (Routine)
30 November 2004	Wellington Research Centre, AU	daily high min	22.7 C (72.9 F)	0.1 C (0.2 F)	7 years	6 of 100 (Routine)
29 November 2004	Wellington Research Centre, AU	daily high min	21.5 C (70.7 F)	0.2 C (0.4 F)	27 years	12 of 100 (Routine)
10 November 2004	Wellington Research Centre, AU	daily rain	24.4 mm (1.0 in)	3.6 mm (0.14 in)	23 years	14 of 100 (Routine)
27 October 2004	Wellington Research Centre, AU	monthly high min	19.9 C (67.8 F)	0.1 C (0.2 F)	36 years	24 of 100 (Routine)
16 October 2004	Wellington Research Centre, AU	daily low min	2.2 C (36.0 F)	0.1 C (0.2 F)	34 years	14 of 100 (Routine)

Climate Trend

35 complete years, 1966 to 2004

One stripe for each of 35 complete years at Wellington Research Centre, 1966 to 2004. Blue stripes are years cooler than the station's own mean of 16.7 C (62.0 F); red stripes are warmer. The coolest year was 1970, at 15.6 C (60.1 F), and the warmest was 2002, at 17.7 C (63.9 F). The strongest colour marks a difference of 1.1 C (2.0 F).

Annual mean temperature at Wellington Research Centre as warming stripes, 1966 to 2004
Year	Annual mean temperature	Difference from the station mean
1966	15.9 C	-0.74 C
1968	16.5 C	-0.15 C
1969	16.2 C	-0.47 C
1970	15.6 C	-1.07 C
1971	15.7 C	-1.00 C
1972	16.6 C	-0.07 C
1973	17.1 C	+0.40 C
1974	15.7 C	-0.96 C
1975	16.0 C	-0.65 C
1976	15.7 C	-1.02 C
1979	17.0 C	+0.28 C
1980	17.5 C	+0.83 C
1981	17.2 C	+0.55 C
1982	17.3 C	+0.57 C
1983	16.9 C	+0.23 C
1984	15.8 C	-0.89 C
1985	16.8 C	+0.09 C
1986	16.5 C	-0.14 C
1987	16.7 C	-0.01 C
1988	16.9 C	+0.20 C
1989	16.5 C	-0.19 C
1990	17.0 C	+0.28 C
1992	16.0 C	-0.70 C
1993	16.9 C	+0.26 C
1994	17.0 C	+0.35 C
1995	16.8 C	+0.08 C
1996	16.4 C	-0.29 C
1997	17.6 C	+0.92 C
1998	17.3 C	+0.60 C
1999	17.1 C	+0.37 C
2000	16.6 C	-0.13 C
2001	17.2 C	+0.47 C
2002	17.7 C	+1.03 C
2003	17.1 C	+0.44 C
2004	17.4 C	+0.68 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.5) per decade over 1966 to 2004. In Fahrenheit: 0.5 F (0.3 to 0.8) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Wellington Research Centre
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.2 to 0.5) per decade	0.5 F (0.3 to 0.8) per decade	1966 to 2004	35	Rise
Mean daily maximum	0.4 C (0.2 to 0.6) per decade	0.7 F (0.3 to 1.1) per decade	1966 to 2004	35	Rise
Mean daily minimum	0.22 C (0.04 to 0.39) per decade	0.4 F (0.1 to 0.7) per decade	1966 to 2004	35	Rise

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

1946 to 2005

Yearly extremes at Wellington Research Centre: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	44.3 C (111.7 F)	2004	39.6 C (103.3 F)	41
Coldest night (TNn)	-7.4 C (18.7 F)	1974	-2.2 C (28.0 F)	41
Wettest day (Rx1day)	179.8 mm (7.1 in)	1955	45.6 mm (1.8 in)	60
Wettest five days (Rx5day)	219.7 mm (8.6 in)	1955	72.5 mm (2.9 in)	60
Longest dry spell (CDD)	63 days	1998	31 days	60

Hottest day (TXx)

The hottest day of the year at Wellington Research Centre, 1946 to 2005. The record is 44.3 C (111.7 F) in 2004, marked on the chart; the median year is 39.6 C (103.3 F).

Hottest day (TXx) at Wellington Research Centre by year
Year	Hottest day (TXx)
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	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	41.7 C (107.1 F)
1966	40.1 C (104.2 F)
1967	39.0 C (102.2 F)
1968	40.4 C (104.7 F)
1969	38.8 C (101.8 F)
1970	37.2 C (99.0 F)
1971	37.9 C (100.2 F)
1972	40.0 C (104.0 F)
1973	41.4 C (106.5 F)
1974	36.0 C (96.8 F)
1975	38.6 C (101.5 F)
1976	37.1 C (98.8 F)
1977	39.4 C (102.9 F)
1978	38.2 C (100.8 F)
1979	40.4 C (104.7 F)
1980	38.0 C (100.4 F)
1981	40.3 C (104.5 F)
1982	40.7 C (105.3 F)
1983	40.9 C (105.6 F)
1984	37.5 C (99.5 F)
1985	38.8 C (101.8 F)
1986	38.5 C (101.3 F)
1987	40.5 C (104.9 F)
1988	39.6 C (103.3 F)
1989	37.0 C (98.6 F)
1990	41.1 C (106.0 F)
1991	38.5 C (101.3 F)
1992	40.2 C (104.4 F)
1993	38.0 C (100.4 F)
1994	40.3 C (104.5 F)
1995	38.0 C (100.4 F)
1996	41.2 C (106.2 F)
1997	41.1 C (106.0 F)
1998	40.3 C (104.5 F)
1999	37.8 C (100.0 F)
2000	39.6 C (103.3 F)
2001	42.0 C (107.6 F)
2002	39.4 C (102.9 F)
2003	41.5 C (106.7 F)
2004	44.3 C (111.7 F)
2005	41.2 C (106.2 F)

Coldest night (TNn)

The coldest night of the year at Wellington Research Centre, 1946 to 2005. The record is -7.4 C (18.7 F) in 1974, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Wellington Research Centre by year
Year	Coldest night (TNn)
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	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-4.1 C (24.6 F)
1966	-2.3 C (27.9 F)
1967	-2.2 C (28.0 F)
1968	-3.6 C (25.5 F)
1969	-2.7 C (27.1 F)
1970	-3.7 C (25.3 F)
1971	-4.1 C (24.6 F)
1972	-2.8 C (27.0 F)
1973	-0.7 C (30.7 F)
1974	-7.4 C (18.7 F)
1975	-1.6 C (29.1 F)
1976	-2.4 C (27.7 F)
1977	-1.6 C (29.1 F)
1978	-2.5 C (27.5 F)
1979	-2.3 C (27.9 F)
1980	-1.2 C (29.8 F)
1981	-1.5 C (29.3 F)
1982	-2.5 C (27.5 F)
1983	-3.5 C (25.7 F)
1984	-1.9 C (28.6 F)
1985	-1.7 C (28.9 F)
1986	-4.2 C (24.4 F)
1987	-4.0 C (24.8 F)
1988	-2.3 C (27.9 F)
1989	-2.2 C (28.0 F)
1990	-1.1 C (30.0 F)
1991	-0.9 C (30.4 F)
1992	-2.9 C (26.8 F)
1993	-0.4 C (31.3 F)
1994	-2.7 C (27.1 F)
1995	-2.1 C (28.2 F)
1996	-0.7 C (30.7 F)
1997	-1.9 C (28.6 F)
1998	-1.8 C (28.8 F)
1999	-0.3 C (31.5 F)
2000	-1.8 C (28.8 F)
2001	-1.5 C (29.3 F)
2002	-4.0 C (24.8 F)
2003	-2.6 C (27.3 F)
2004	-1.6 C (29.1 F)
2005	7.6 C (45.7 F)

Wettest day (Rx1day)

The wettest day of the year at Wellington Research Centre, 1946 to 2005. The record is 179.8 mm (7.1 in) in 1955, marked on the chart; the median year is 45.6 mm (1.8 in).

Wettest day (Rx1day) at Wellington Research Centre by year
Year	Wettest day (Rx1day)
1946	37.8 mm (1.5 in)
1947	54.4 mm (2.1 in)
1948	36.8 mm (1.4 in)
1949	36.1 mm (1.4 in)
1950	89.9 mm (3.5 in)
1951	31.0 mm (1.2 in)
1952	42.2 mm (1.7 in)
1953	42.2 mm (1.7 in)
1954	64.5 mm (2.5 in)
1955	179.8 mm (7.1 in)
1956	66.3 mm (2.6 in)
1957	47.8 mm (1.9 in)
1958	44.2 mm (1.7 in)
1959	52.1 mm (2.1 in)
1960	47.0 mm (1.9 in)
1961	52.3 mm (2.1 in)
1962	53.6 mm (2.1 in)
1963	36.6 mm (1.4 in)
1964	33.8 mm (1.3 in)
1965	36.3 mm (1.4 in)
1966	46.7 mm (1.8 in)
1967	26.4 mm (1.0 in)
1968	41.7 mm (1.6 in)
1969	67.1 mm (2.6 in)
1970	32.3 mm (1.3 in)
1971	73.7 mm (2.9 in)
1972	52.3 mm (2.1 in)
1973	47.2 mm (1.9 in)
1974	46.4 mm (1.8 in)
1975	38.0 mm (1.5 in)
1976	59.4 mm (2.3 in)
1977	25.8 mm (1.0 in)
1978	36.4 mm (1.4 in)
1979	63.0 mm (2.5 in)
1980	32.4 mm (1.3 in)
1981	40.6 mm (1.6 in)
1982	69.8 mm (2.7 in)
1983	38.4 mm (1.5 in)
1984	60.2 mm (2.4 in)
1985	36.0 mm (1.4 in)
1986	44.0 mm (1.7 in)
1987	44.0 mm (1.7 in)
1988	50.2 mm (2.0 in)
1989	34.0 mm (1.3 in)
1990	96.0 mm (3.8 in)
1991	51.4 mm (2.0 in)
1992	45.0 mm (1.8 in)
1993	53.6 mm (2.1 in)
1994	39.0 mm (1.5 in)
1995	43.0 mm (1.7 in)
1996	58.4 mm (2.3 in)
1997	59.8 mm (2.4 in)
1998	55.8 mm (2.2 in)
1999	43.8 mm (1.7 in)
2000	95.0 mm (3.7 in)
2001	31.4 mm (1.2 in)
2002	40.8 mm (1.6 in)
2003	55.2 mm (2.2 in)
2004	46.1 mm (1.8 in)
2005	24.4 mm (1.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wellington Research Centre, 1946 to 2005. The record is 219.7 mm (8.6 in) in 1955, marked on the chart; the median year is 72.5 mm (2.9 in).

Wettest five days (Rx5day) at Wellington Research Centre by year
Year	Wettest five days (Rx5day)
1946	40.3 mm (1.6 in)
1947	72.2 mm (2.8 in)
1948	42.2 mm (1.7 in)
1949	65.8 mm (2.6 in)
1950	140.2 mm (5.5 in)
1951	48.2 mm (1.9 in)
1952	72.7 mm (2.9 in)
1953	44.2 mm (1.7 in)
1954	84.9 mm (3.3 in)
1955	219.7 mm (8.6 in)
1956	114.8 mm (4.5 in)
1957	52.2 mm (2.1 in)
1958	73.1 mm (2.9 in)
1959	122.8 mm (4.8 in)
1960	73.7 mm (2.9 in)
1961	76.2 mm (3.0 in)
1962	67.3 mm (2.6 in)
1963	77.0 mm (3.0 in)
1964	69.7 mm (2.7 in)
1965	73.9 mm (2.9 in)
1966	59.7 mm (2.4 in)
1967	52.8 mm (2.1 in)
1968	68.9 mm (2.7 in)
1969	93.3 mm (3.7 in)
1970	64.3 mm (2.5 in)
1971	161.3 mm (6.4 in)
1972	75.2 mm (3.0 in)
1973	146.3 mm (5.8 in)
1974	61.6 mm (2.4 in)
1975	52.0 mm (2.0 in)
1976	136.2 mm (5.4 in)
1977	54.6 mm (2.1 in)
1978	80.6 mm (3.2 in)
1979	106.0 mm (4.2 in)
1980	69.2 mm (2.7 in)
1981	59.2 mm (2.3 in)
1982	85.0 mm (3.3 in)
1983	73.6 mm (2.9 in)
1984	102.6 mm (4.0 in)
1985	50.8 mm (2.0 in)
1986	58.6 mm (2.3 in)
1987	82.4 mm (3.2 in)
1988	61.2 mm (2.4 in)
1989	84.0 mm (3.3 in)
1990	125.4 mm (4.9 in)
1991	80.6 mm (3.2 in)
1992	96.8 mm (3.8 in)
1993	82.6 mm (3.3 in)
1994	60.2 mm (2.4 in)
1995	89.6 mm (3.5 in)
1996	90.0 mm (3.5 in)
1997	71.2 mm (2.8 in)
1998	70.7 mm (2.8 in)
1999	61.8 mm (2.4 in)
2000	133.2 mm (5.2 in)
2001	53.6 mm (2.1 in)
2002	54.8 mm (2.2 in)
2003	71.4 mm (2.8 in)
2004	68.9 mm (2.7 in)
2005	24.4 mm (1.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wellington Research Centre, 1946 to 2005. The record is 63 days in 1998, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Wellington Research Centre by year
Year	Longest dry spell (CDD)
1946	27 days
1947	30 days
1948	45 days
1949	22 days
1950	32 days
1951	30 days
1952	27 days
1953	23 days
1954	43 days
1955	47 days
1956	28 days
1957	48 days
1958	19 days
1959	45 days
1960	26 days
1961	32 days
1962	46 days
1963	30 days
1964	31 days
1965	30 days
1966	21 days
1967	57 days
1968	21 days
1969	28 days
1970	49 days
1971	38 days
1972	41 days
1973	31 days
1974	33 days
1975	23 days
1976	21 days
1977	26 days
1978	39 days
1979	27 days
1980	44 days
1981	41 days
1982	55 days
1983	22 days
1984	36 days
1985	28 days
1986	44 days
1987	30 days
1988	30 days
1989	31 days
1990	27 days
1991	34 days
1992	16 days
1993	34 days
1994	20 days
1995	48 days
1996	44 days
1997	48 days
1998	63 days
1999	30 days
2000	21 days
2001	23 days
2002	46 days
2003	39 days
2004	25 days
2005	17 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

34 years with a frost

Across 34 years with a frost, the median last spring frost at Wellington Research Centre falls on 17 August and the median first autumn frost on 13 June, which leaves a median of 298 days between them.

Fitted over all years, the growing season changes by +8.7 days per decade at this station.

Frost dates and growing season at Wellington Research Centre
Measure	Median, all years	Earliest period	Recent period (1971 to 2003)	Recent against earliest	Fitted trend
Last spring frost	17 August	n/a	16 August	n/a	-3.8 days per decade
First autumn frost	13 June	n/a	13 June	n/a	+4.9 days per decade
Growing days	298 days	n/a	302 days	n/a	+8.7 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

59 years, 1946 to 2004

A day with at least 45.1 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 137.3 mm (5.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Wellington Research Centre: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	45.1 mm (1.8 in)
5 years	60.6 mm (2.4 in)
10 years	73.8 mm (2.9 in)
25 years	94.8 mm (3.7 in)
50 years	114.1 mm (4.5 in)
100 years	137.3 mm (5.4 in)	Longer than the 59 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, 59 years of values from 1946 to 2004.

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: 179.8 mm (7.1 in) in 1955; 96.0 mm (3.8 in) in 1990; 95.0 mm (3.7 in) in 2000.

Download the Data

Data for Wellington Research Centre standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wellington Research Centre 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).