Jiulong Weather Records (CHM00056462)

Record envelope, standing records and threshold days for Jiulong (CHM00056462), China, with 75 years of record.

Key Facts for Jiulong

Jiulong (CHM00056462) is a weather station in China at 29.00 latitude and 101.50 longitude, 2,994 m (9,823 ft) above sea level.
The station reports from 1952 to 2026, 75 years of record.
1,464 records set at Jiulong still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Jiulong set a daily record high minimum temperature of 13.5 C (56.3 F) on 8 September 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

Location: China, 29.00 latitude, 101.50 longitude.
Elevation: 2,994 m (9,823 ft).
Period of record: 1952 to 2026, 75 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 Jiulong. 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 Jiulong, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	23.5 C (74.3 F)	-15.6 C (3.9 F)	18.0 C (64.4 F)	-5.8 C (21.6 F)
Feb	25.8 C (78.4 F)	-13.1 C (8.4 F)	18.0 C (64.4 F)	-3.5 C (25.7 F)
Mar	27.5 C (81.5 F)	-9.7 C (14.5 F)	20.4 C (68.7 F)	-0.1 C (31.8 F)
Apr	31.8 C (89.2 F)	-7.5 C (18.5 F)	22.5 C (72.5 F)	1.6 C (34.9 F)
May	33.4 C (92.1 F)	-2.0 C (28.4 F)	28.3 C (82.9 F)	2.1 C (35.8 F)
Jun	33.4 C (92.1 F)	0.0 C (32.0 F)	26.2 C (79.2 F)	7.5 C (45.5 F)
Jul	30.2 C (86.4 F)	3.5 C (38.3 F)	27.0 C (80.6 F)	9.6 C (49.3 F)
Aug	30.1 C (86.2 F)	0.0 C (32.0 F)	25.2 C (77.4 F)	6.4 C (43.5 F)
Sep	29.2 C (84.6 F)	-0.1 C (31.8 F)	25.6 C (78.1 F)	9.1 C (48.4 F)
Oct	26.5 C (79.7 F)	-6.0 C (21.2 F)	16.0 C (60.8 F)	8.4 C (47.1 F)
Nov	24.0 C (75.2 F)	-11.3 C (11.7 F)	n/a	n/a
Dec	22.2 C (72.0 F)	-14.4 C (6.1 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Jiulong still stand. 1952 holds the most, with 206.

Standing records at Jiulong by the year they were set
Year set	Standing records
1952	206
1953	27
1954	14
1955	6
1956	22
1957	20
1958	20
1959	21
1960	10
1961	20
1962	16
1963	21
1964	13
1965	24
1966	23
1967	25
1968	26
1969	17
1970	21
1971	26
1972	28
1973	18
1974	24
1975	12
1976	11
1977	20
1978	12
1979	12
1980	11
1981	15
1982	23
1983	28
1984	13
1985	20
1986	11
1987	19
1988	13
1989	15
1990	17
1991	13
1992	19
1993	14
1994	20
1995	10
1996	9
1997	19
1998	24
1999	20
2000	8
2001	9
2002	15
2003	17
2004	14
2005	14
2006	26
2007	15
2008	10
2009	36
2010	13
2011	15
2012	14
2013	16
2014	7
2015	10
2016	6
2017	3
2018	6
2019	5
2020	2
2021	8
2022	32
2023	34
2024	21
2025	45
2026	15

All-Time Record Progression

6 new records

6 all-time records were set at Jiulong between 5 January 1983 and 3 July 2023. Each dot is a new record.

When Jiulong set new all-time records
Date	Kind	Detail
1983-01-05	Record low minimum temperature	Record low minimum temperature -15.6 C (3.9 F)
1983-12-28	Record low maximum temperature	Record low maximum temperature -2.7 C (27.1 F)
1987-09-25	Record daily precipitation	Record daily precipitation 54.0 mm (2.1 in)
1998-07-20	Record daily precipitation	Record daily precipitation 55.4 mm (2.2 in)
2023-05-31	Record high maximum temperature	Record high maximum temperature 33.4 C (92.1 F)
2023-07-03	Record daily precipitation	Record daily precipitation 65.0 mm (2.6 in)

Wettest Day of Each Month

Jul: 65.0 mm (2.6 in)

The wettest day on record for each calendar month at Jiulong. The most was 65.0 mm (2.6 in) on 3 July 2023.

Record daily precipitation for each month at Jiulong
Month	Record daily precipitation (mm)	Date
Jan	7.7 mm (0.30 in)	11 January 1965
Feb	16.0 mm (0.6 in)	25 February 2016
Mar	21.7 mm (0.9 in)	3 March 1963
Apr	37.4 mm (1.5 in)	15 April 1986
May	44.5 mm (1.8 in)	8 May 1952
Jun	53.2 mm (2.1 in)	26 June 1952
Jul	65.0 mm (2.6 in)	3 July 2023
Aug	51.4 mm (2.0 in)	12 August 2009
Sep	54.0 mm (2.1 in)	25 September 1987
Oct	46.2 mm (1.8 in)	2 October 2001
Nov	22.1 mm (0.9 in)	4 November 2010
Dec	7.7 mm (0.30 in)	12 December 1958

Period of Record Coverage

1952 to 2026

75 years of record at Jiulong, 1952 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 2013, 2015, 2016, 2017, 2018, 2019, 2020, 2021 and others.

Days with data per year at Jiulong
Year	Days with data	Share of year	Complete
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	365	100%	Yes
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	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	365	100%	Yes
1987	365	100%	Yes
1988	366	100%	Yes
1989	365	100%	Yes
1990	365	100%	Yes
1991	365	100%	Yes
1992	366	100%	Yes
1993	365	100%	Yes
1994	365	100%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	365	100%	Yes
1999	365	100%	Yes
2000	366	100%	Yes
2001	365	100%	Yes
2002	365	100%	Yes
2003	365	100%	Yes
2004	366	100%	Yes
2005	365	100%	Yes
2006	365	100%	Yes
2007	365	100%	Yes
2008	366	100%	Yes
2009	365	100%	Yes
2010	365	100%	Yes
2011	365	100%	Yes
2012	366	100%	Yes
2013	195	53%	No
2014	360	99%	Yes
2015	100	27%	No
2016	11	3%	No
2017	4	1%	No
2018	34	9%	No
2019	85	23%	No
2020	97	27%	No
2021	120	33%	No
2022	361	99%	Yes
2023	343	94%	Yes
2024	344	94%	Yes
2025	359	98%	Yes
2026	235	64%	No

Latest Records

Latest records at Jiulong
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 September 2026	Jiulong, CN	daily high min (Provisional)	13.5 C (56.3 F)	0.1 C (0.2 F)	41 years	19 of 100 (Routine)
6 September 2026	Jiulong, CN	monthly high min (Provisional)	14.9 C (58.8 F)	0.4 C (0.7 F)	8 years	20 of 100 (Routine)
29 August 2026	Jiulong, CN	daily high min (Provisional)	14.3 C (57.7 F)	0.1 C (0.2 F)	23 years	13 of 100 (Routine)
26 August 2026	Jiulong, CN	daily high min (Provisional)	14.4 C (57.9 F)	0.5 C (0.9 F)	8 years	11 of 100 (Routine)
23 August 2026	Jiulong, CN	daily high min (Provisional)	14.4 C (57.9 F)	0.9 C (1.6 F)	21 years	17 of 100 (Routine)
22 August 2026	Jiulong, CN	daily high min (Tie, Provisional)	13.8 C (56.8 F)	tie	0 years	1 of 100 (Routine)
28 July 2026	Jiulong, CN	daily high min	14.4 C (57.9 F)	0.4 C (0.7 F)	1 year	8 of 100 (Routine)
16 July 2026	Jiulong, CN	daily high min	15.1 C (59.2 F)	0.1 C (0.2 F)	72 years	28 of 100 (Routine)
14 July 2026	Jiulong, CN	daily high min	15.4 C (59.7 F)	0.9 C (1.6 F)	63 years	29 of 100 (Routine)
10 July 2026	Jiulong, CN	daily high min	14.0 C (57.2 F)	0.1 C (0.2 F)	1 year	7 of 100 (Routine)
10 June 2026	Jiulong, CN	daily low max	11.3 C (52.3 F)	0.5 C (0.9 F)	44 years	21 of 100 (Routine)
11 May 2026	Jiulong, CN	daily low max	11.4 C (52.5 F)	1.0 C (1.8 F)	29 years	17 of 100 (Routine)
7 May 2026	Jiulong, CN	daily low max	12.1 C (53.8 F)	0.1 C (0.2 F)	12 years	10 of 100 (Routine)
3 May 2026	Jiulong, CN	monthly low max (Tie)	7.8 C (46.0 F)	tie	34 years	6 of 100 (Routine)
28 April 2026	Jiulong, CN	daily low max	9.0 C (48.2 F)	0.9 C (1.6 F)	17 years	14 of 100 (Routine)
21 April 2026	Jiulong, CN	daily high min	9.5 C (49.1 F)	0.8 C (1.4 F)	0 years	9 of 100 (Routine)
12 March 2026	Jiulong, CN	daily high min	7.1 C (44.8 F)	0.2 C (0.4 F)	73 years	29 of 100 (Routine)
9 March 2026	Jiulong, CN	daily low max	6.4 C (43.5 F)	1.2 C (2.2 F)	44 years	23 of 100 (Routine)
7 March 2026	Jiulong, CN	daily high min	6.5 C (43.7 F)	2.0 C (3.6 F)	73 years	36 of 100 (Notable)
7 January 2026	Jiulong, CN	daily low max	4.8 C (40.6 F)	1.4 C (2.5 F)	43 years	23 of 100 (Routine)

Climate Trend

65 complete years, 1952 to 2025

One stripe for each of 65 complete years at Jiulong, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 10.3 C (50.6 F); red stripes are warmer. The coolest year was 1965, at 8.9 C (48.1 F), and the warmest was 1952, at 13.8 C (56.9 F). The strongest colour marks a difference of 3.6 C (6.5 F).

Annual mean temperature at Jiulong as warming stripes, 1952 to 2025
Year	Annual mean temperature	Difference from the station mean
1952	13.8 C	+3.53 C
1953	11.1 C	+0.75 C
1954	10.9 C	+0.59 C
1955	10.3 C	-0.02 C
1956	9.7 C	-0.59 C
1957	9.4 C	-0.87 C
1958	10.3 C	0.00 C
1959	9.8 C	-0.49 C
1960	10.2 C	-0.13 C
1961	9.9 C	-0.39 C
1962	9.4 C	-0.89 C
1963	9.3 C	-1.03 C
1964	10.1 C	-0.22 C
1965	8.9 C	-1.39 C
1966	9.9 C	-0.46 C
1967	9.3 C	-1.01 C
1968	9.2 C	-1.11 C
1969	10.0 C	-0.34 C
1970	9.5 C	-0.83 C
1971	9.3 C	-1.01 C
1972	9.6 C	-0.73 C
1973	10.2 C	-0.10 C
1974	9.9 C	-0.37 C
1975	10.4 C	+0.07 C
1976	10.0 C	-0.27 C
1977	9.8 C	-0.56 C
1978	9.3 C	-1.00 C
1979	10.0 C	-0.33 C
1980	10.1 C	-0.17 C
1981	10.5 C	+0.18 C
1982	9.7 C	-0.60 C
1983	9.5 C	-0.80 C
1984	10.3 C	0.00 C
1985	10.1 C	-0.23 C
1986	9.9 C	-0.39 C
1987	10.3 C	+0.03 C
1988	10.6 C	+0.28 C
1989	9.8 C	-0.50 C
1990	9.7 C	-0.57 C
1991	10.4 C	+0.05 C
1992	9.5 C	-0.86 C
1993	10.3 C	+0.02 C
1994	10.8 C	+0.44 C
1995	10.7 C	+0.35 C
1996	10.6 C	+0.30 C
1997	9.8 C	-0.48 C
1998	10.9 C	+0.59 C
1999	11.2 C	+0.89 C
2000	10.2 C	-0.09 C
2001	10.5 C	+0.19 C
2002	10.3 C	-0.01 C
2003	10.8 C	+0.46 C
2004	10.2 C	-0.07 C
2005	11.1 C	+0.81 C
2006	11.2 C	+0.84 C
2007	10.8 C	+0.48 C
2008	10.7 C	+0.42 C
2009	11.5 C	+1.18 C
2010	11.2 C	+0.85 C
2011	10.6 C	+0.30 C
2012	11.2 C	+0.84 C
2022	11.1 C	+0.79 C
2023	12.1 C	+1.75 C
2024	11.9 C	+1.57 C
2025	10.9 C	+0.57 C

The annual mean temperature here has risen by 0.2 C (0.1 to 0.3) per decade over 1952 to 2025. In Fahrenheit: 0.3 F (0.1 to 0.5) per decade. The slope is a straight line fitted to 65 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Jiulong
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.2 C (0.1 to 0.3) per decade	0.3 F (0.1 to 0.5) per decade	1952 to 2025	65	Rise
Mean daily maximum	0.13 C (0.02 to 0.23) per decade	0.23 F (0.04 to 0.41) per decade	1952 to 2025	65	Rise
Mean daily minimum	0.2 C (0.1 to 0.3) per decade	0.4 F (0.2 to 0.6) per decade	1952 to 2025	65	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

1952 to 2026

Yearly extremes at Jiulong: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.4 C (92.1 F)	2023	28.3 C (82.9 F)	75
Coldest night (TNn)	-15.6 C (3.9 F)	1983	-11.1 C (12.0 F)	75
Wettest day (Rx1day)	65.0 mm (2.6 in)	2023	36.8 mm (1.4 in)	74
Wettest five days (Rx5day)	129.9 mm (5.1 in)	1999	87.9 mm (3.5 in)	74
Longest dry spell (CDD)	93 days	1999	47 days	74

Hottest day (TXx)

The hottest day of the year at Jiulong, 1952 to 2026. The record is 33.4 C (92.1 F) in 2023, marked on the chart; the median year is 28.3 C (82.9 F).

Hottest day (TXx) at Jiulong by year
Year	Hottest day (TXx)
1952	33.1 C (91.6 F)
1953	31.0 C (87.8 F)
1954	30.2 C (86.4 F)
1955	28.7 C (83.7 F)
1956	29.0 C (84.2 F)
1957	27.7 C (81.9 F)
1958	29.1 C (84.4 F)
1959	27.9 C (82.2 F)
1960	27.6 C (81.7 F)
1961	26.4 C (79.5 F)
1962	27.0 C (80.6 F)
1963	28.1 C (82.6 F)
1964	29.4 C (84.9 F)
1965	27.8 C (82.0 F)
1966	27.2 C (81.0 F)
1967	30.0 C (86.0 F)
1968	28.1 C (82.6 F)
1969	30.1 C (86.2 F)
1970	29.2 C (84.6 F)
1971	27.3 C (81.1 F)
1972	27.7 C (81.9 F)
1973	27.5 C (81.5 F)
1974	26.3 C (79.3 F)
1975	29.1 C (84.4 F)
1976	27.5 C (81.5 F)
1977	27.8 C (82.0 F)
1978	26.9 C (80.4 F)
1979	28.3 C (82.9 F)
1980	27.4 C (81.3 F)
1981	27.5 C (81.5 F)
1982	29.4 C (84.9 F)
1983	30.2 C (86.4 F)
1984	28.8 C (83.8 F)
1985	27.5 C (81.5 F)
1986	29.6 C (85.3 F)
1987	31.7 C (89.1 F)
1988	30.3 C (86.5 F)
1989	29.1 C (84.4 F)
1990	26.4 C (79.5 F)
1991	31.2 C (88.2 F)
1992	27.7 C (81.9 F)
1993	28.3 C (82.9 F)
1994	29.3 C (84.7 F)
1995	29.5 C (85.1 F)
1996	28.9 C (84.0 F)
1997	28.8 C (83.8 F)
1998	30.3 C (86.5 F)
1999	28.3 C (82.9 F)
2000	28.9 C (84.0 F)
2001	27.0 C (80.6 F)
2002	27.6 C (81.7 F)
2003	27.6 C (81.7 F)
2004	27.1 C (80.8 F)
2005	28.4 C (83.1 F)
2006	29.4 C (84.9 F)
2007	29.5 C (85.1 F)
2008	26.8 C (80.2 F)
2009	29.7 C (85.5 F)
2010	28.8 C (83.8 F)
2011	27.9 C (82.2 F)
2012	31.5 C (88.7 F)
2013	29.5 C (85.1 F)
2014	31.0 C (87.8 F)
2015	29.8 C (85.6 F)
2016	23.1 C (73.6 F)
2017	23.8 C (74.8 F)
2018	25.9 C (78.6 F)
2019	24.2 C (75.6 F)
2020	25.4 C (77.7 F)
2021	28.1 C (82.6 F)
2022	28.8 C (83.8 F)
2023	33.4 C (92.1 F)
2024	29.1 C (84.4 F)
2025	28.1 C (82.6 F)
2026	28.3 C (82.9 F)

Coldest night (TNn)

The coldest night of the year at Jiulong, 1952 to 2026. The record is -15.6 C (3.9 F) in 1983, marked on the chart; the median year is -11.1 C (12.0 F).

Coldest night (TNn) at Jiulong by year
Year	Coldest night (TNn)
1952	-11.9 C (10.6 F)
1953	-11.7 C (10.9 F)
1954	-10.5 C (13.1 F)
1955	-11.5 C (11.3 F)
1956	-13.0 C (8.6 F)
1957	-10.9 C (12.4 F)
1958	-12.1 C (10.2 F)
1959	-11.7 C (10.9 F)
1960	-12.6 C (9.3 F)
1961	-13.9 C (7.0 F)
1962	-14.4 C (6.1 F)
1963	-13.1 C (8.4 F)
1964	-14.4 C (6.1 F)
1965	-14.0 C (6.8 F)
1966	-11.5 C (11.3 F)
1967	-11.8 C (10.8 F)
1968	-12.6 C (9.3 F)
1969	-13.1 C (8.4 F)
1970	-11.6 C (11.1 F)
1971	-13.6 C (7.5 F)
1972	-12.0 C (10.4 F)
1973	-13.1 C (8.4 F)
1974	-14.9 C (5.2 F)
1975	-10.6 C (12.9 F)
1976	-9.8 C (14.4 F)
1977	-13.1 C (8.4 F)
1978	-12.5 C (9.5 F)
1979	-11.6 C (11.1 F)
1980	-12.3 C (9.9 F)
1981	-10.8 C (12.6 F)
1982	-14.1 C (6.6 F)
1983	-15.6 C (3.9 F)
1984	-11.6 C (11.1 F)
1985	-11.3 C (11.7 F)
1986	-10.9 C (12.4 F)
1987	-11.6 C (11.1 F)
1988	-9.6 C (14.7 F)
1989	-13.2 C (8.2 F)
1990	-10.1 C (13.8 F)
1991	-9.1 C (15.6 F)
1992	-11.1 C (12.0 F)
1993	-10.3 C (13.5 F)
1994	-10.5 C (13.1 F)
1995	-10.3 C (13.5 F)
1996	-11.3 C (11.7 F)
1997	-11.9 C (10.6 F)
1998	-11.0 C (12.2 F)
1999	-11.4 C (11.5 F)
2000	-11.5 C (11.3 F)
2001	-10.5 C (13.1 F)
2002	-10.0 C (14.0 F)
2003	-10.5 C (13.1 F)
2004	-9.7 C (14.5 F)
2005	-10.1 C (13.8 F)
2006	-9.5 C (14.9 F)
2007	-10.3 C (13.5 F)
2008	-9.1 C (15.6 F)
2009	-9.9 C (14.2 F)
2010	-8.9 C (16.0 F)
2011	-10.6 C (12.9 F)
2012	-11.1 C (12.0 F)
2013	-12.6 C (9.3 F)
2014	-10.6 C (12.9 F)
2015	-11.5 C (11.3 F)
2016	-10.8 C (12.6 F)
2017	-8.1 C (17.4 F)
2018	-9.4 C (15.1 F)
2019	-9.9 C (14.2 F)
2020	-11.1 C (12.0 F)
2021	-6.6 C (20.1 F)
2022	-10.7 C (12.7 F)
2023	-8.7 C (16.3 F)
2024	-7.7 C (18.1 F)
2025	-6.7 C (19.9 F)
2026	-5.8 C (21.6 F)

Wettest day (Rx1day)

The wettest day of the year at Jiulong, 1952 to 2026. The record is 65.0 mm (2.6 in) in 2023, marked on the chart; the median year is 36.8 mm (1.4 in).

Wettest day (Rx1day) at Jiulong by year
Year	Wettest day (Rx1day)
1952	53.2 mm (2.1 in)
1953	37.4 mm (1.5 in)
1954	33.9 mm (1.3 in)
1955	25.8 mm (1.0 in)
1956	33.3 mm (1.3 in)
1957	33.8 mm (1.3 in)
1958	46.9 mm (1.8 in)
1959	45.4 mm (1.8 in)
1960	46.1 mm (1.8 in)
1961	32.5 mm (1.3 in)
1962	25.9 mm (1.0 in)
1963	37.6 mm (1.5 in)
1964	32.8 mm (1.3 in)
1965	51.2 mm (2.0 in)
1966	43.3 mm (1.7 in)
1967	40.0 mm (1.6 in)
1968	36.9 mm (1.5 in)
1969	53.0 mm (2.1 in)
1970	35.3 mm (1.4 in)
1971	29.1 mm (1.1 in)
1972	39.3 mm (1.5 in)
1973	39.6 mm (1.6 in)
1974	37.6 mm (1.5 in)
1975	26.3 mm (1.0 in)
1976	31.2 mm (1.2 in)
1977	30.1 mm (1.2 in)
1978	35.2 mm (1.4 in)
1979	29.9 mm (1.2 in)
1980	38.3 mm (1.5 in)
1981	43.6 mm (1.7 in)
1982	39.0 mm (1.5 in)
1983	36.2 mm (1.4 in)
1984	36.0 mm (1.4 in)
1985	34.1 mm (1.3 in)
1986	37.4 mm (1.5 in)
1987	54.0 mm (2.1 in)
1988	30.8 mm (1.2 in)
1989	46.7 mm (1.8 in)
1990	26.6 mm (1.0 in)
1991	37.3 mm (1.5 in)
1992	39.2 mm (1.5 in)
1993	44.2 mm (1.7 in)
1994	24.9 mm (1.0 in)
1995	32.7 mm (1.3 in)
1996	32.4 mm (1.3 in)
1997	35.3 mm (1.4 in)
1998	55.4 mm (2.2 in)
1999	45.8 mm (1.8 in)
2000	37.0 mm (1.5 in)
2001	46.2 mm (1.8 in)
2002	27.8 mm (1.1 in)
2003	34.7 mm (1.4 in)
2004	40.3 mm (1.6 in)
2005	32.5 mm (1.3 in)
2006	30.8 mm (1.2 in)
2007	35.5 mm (1.4 in)
2008	30.5 mm (1.2 in)
2009	51.4 mm (2.0 in)
2010	36.2 mm (1.4 in)
2011	36.6 mm (1.4 in)
2012	39.5 mm (1.6 in)
2013	39.1 mm (1.5 in)
2014	34.3 mm (1.4 in)
2015	37.8 mm (1.5 in)
2016	32.5 mm (1.3 in)
2017	39.1 mm (1.5 in)
2018	50.5 mm (2.0 in)
2019	33.8 mm (1.3 in)
2020	21.8 mm (0.9 in)
2021	50.8 mm (2.0 in)
2022	38.6 mm (1.5 in)
2023	65.0 mm (2.6 in)
2024	29.7 mm (1.2 in)
2025	n/a
2026	23.9 mm (0.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Jiulong, 1952 to 2026. The record is 129.9 mm (5.1 in) in 1999, marked on the chart; the median year is 87.9 mm (3.5 in).

Wettest five days (Rx5day) at Jiulong by year
Year	Wettest five days (Rx5day)
1952	118.7 mm (4.7 in)
1953	81.4 mm (3.2 in)
1954	107.0 mm (4.2 in)
1955	75.8 mm (3.0 in)
1956	76.4 mm (3.0 in)
1957	69.3 mm (2.7 in)
1958	89.9 mm (3.5 in)
1959	94.8 mm (3.7 in)
1960	109.1 mm (4.3 in)
1961	65.0 mm (2.6 in)
1962	71.4 mm (2.8 in)
1963	90.4 mm (3.6 in)
1964	65.3 mm (2.6 in)
1965	117.7 mm (4.6 in)
1966	90.0 mm (3.5 in)
1967	69.1 mm (2.7 in)
1968	82.2 mm (3.2 in)
1969	100.4 mm (4.0 in)
1970	103.9 mm (4.1 in)
1971	92.4 mm (3.6 in)
1972	77.2 mm (3.0 in)
1973	99.2 mm (3.9 in)
1974	89.4 mm (3.5 in)
1975	74.1 mm (2.9 in)
1976	78.8 mm (3.1 in)
1977	93.7 mm (3.7 in)
1978	87.4 mm (3.4 in)
1979	98.1 mm (3.9 in)
1980	114.3 mm (4.5 in)
1981	84.5 mm (3.3 in)
1982	94.6 mm (3.7 in)
1983	75.8 mm (3.0 in)
1984	71.1 mm (2.8 in)
1985	86.8 mm (3.4 in)
1986	90.8 mm (3.6 in)
1987	87.9 mm (3.5 in)
1988	77.1 mm (3.0 in)
1989	97.2 mm (3.8 in)
1990	73.0 mm (2.9 in)
1991	101.0 mm (4.0 in)
1992	89.7 mm (3.5 in)
1993	99.1 mm (3.9 in)
1994	61.8 mm (2.4 in)
1995	72.0 mm (2.8 in)
1996	88.7 mm (3.5 in)
1997	77.5 mm (3.1 in)
1998	88.3 mm (3.5 in)
1999	129.9 mm (5.1 in)
2000	87.1 mm (3.4 in)
2001	91.3 mm (3.6 in)
2002	104.5 mm (4.1 in)
2003	92.4 mm (3.6 in)
2004	81.2 mm (3.2 in)
2005	77.6 mm (3.1 in)
2006	87.6 mm (3.4 in)
2007	92.2 mm (3.6 in)
2008	80.0 mm (3.1 in)
2009	99.9 mm (3.9 in)
2010	77.3 mm (3.0 in)
2011	82.6 mm (3.3 in)
2012	93.1 mm (3.7 in)
2013	104.8 mm (4.1 in)
2014	87.9 mm (3.5 in)
2015	79.9 mm (3.1 in)
2016	98.6 mm (3.9 in)
2017	115.5 mm (4.5 in)
2018	84.5 mm (3.3 in)
2019	85.7 mm (3.4 in)
2020	8.4 mm (0.33 in)
2021	61.2 mm (2.4 in)
2022	98.8 mm (3.9 in)
2023	96.5 mm (3.8 in)
2024	75.4 mm (3.0 in)
2025	n/a
2026	49.4 mm (1.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Jiulong, 1952 to 2026. The record is 93 days in 1999, marked on the chart; the median year is 47 days.

Longest dry spell (CDD) at Jiulong by year
Year	Longest dry spell (CDD)
1952	65 days
1953	50 days
1954	43 days
1955	71 days
1956	66 days
1957	80 days
1958	43 days
1959	40 days
1960	52 days
1961	55 days
1962	47 days
1963	26 days
1964	72 days
1965	31 days
1966	61 days
1967	49 days
1968	75 days
1969	66 days
1970	45 days
1971	50 days
1972	81 days
1973	43 days
1974	64 days
1975	56 days
1976	62 days
1977	29 days
1978	53 days
1979	45 days
1980	47 days
1981	42 days
1982	40 days
1983	41 days
1984	70 days
1985	38 days
1986	42 days
1987	36 days
1988	74 days
1989	50 days
1990	34 days
1991	70 days
1992	25 days
1993	32 days
1994	57 days
1995	41 days
1996	60 days
1997	36 days
1998	48 days
1999	93 days
2000	41 days
2001	51 days
2002	54 days
2003	43 days
2004	38 days
2005	43 days
2006	47 days
2007	53 days
2008	63 days
2009	83 days
2010	49 days
2011	68 days
2012	82 days
2013	6 days
2014	5 days
2015	3 days
2016	4 days
2017	4 days
2018	3 days
2019	3 days
2020	6 days
2021	6 days
2022	29 days
2023	49 days
2024	43 days
2025	n/a
2026	9 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

65 years with a frost

Across 65 years with a frost, the median last spring frost at Jiulong falls on 24 April and the median first autumn frost on 25 October, which leaves a median of 183 days between them.

In 1987 to 2025 the median growing season was 190 days. That is 16 days more than in 1952 to 1981.

Fitted over all years, the growing season changes by +3.0 days per decade at this station.

Frost dates and growing season at Jiulong
Measure	Median, all years	Earliest period (1952 to 1981)	Recent period (1987 to 2025)	Recent against earliest	Fitted trend
Last spring frost	24 April	27 April	22 April	5 days earlier	-1.3 days per decade
First autumn frost	25 October	20 October	29 October	9 days later	+1.6 days per decade
Growing days	183 days	174 days	190 days	16 days more	+3.0 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

64 years, 1952 to 2024

A day with at least 36.5 mm (1.4 in) of rain is expected about once in 2 years. A day with at least 64.0 mm (2.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Jiulong: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	36.5 mm (1.4 in)
5 years	43.9 mm (1.7 in)
10 years	48.7 mm (1.9 in)
25 years	54.9 mm (2.2 in)
50 years	59.5 mm (2.3 in)
100 years	64.0 mm (2.5 in)	Longer than the 64 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, 64 years of values from 1952 to 2024.

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: 65.0 mm (2.6 in) in 2023; 55.4 mm (2.2 in) in 1998; 54.0 mm (2.1 in) in 1987.

Climate Twins

2002 to 2025 against 1961 to 1990

Over 2002 to 2025, Jiulong had a mean temperature of 11.0 C (51.9 F) and 898.6 mm (35.4 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Beaverton 2 SSW (United States, 10,604 km away), Seattle Tacoma AP (United States, 10,452 km away) and Tacoma City Hall (United States, 10,464 km away).

Climate twins of Jiulong: stations whose 1961 to 1990 climate is closest to its 2002 to 2025 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Beaverton 2 SSW	United States	10,604 km (6,589 mi)	11.3 C (52.4 F)	962.5 mm (37.9 in)	0.97
Seattle Tacoma AP	United States	10,452 km (6,495 mi)	11.1 C (52.0 F)	945.3 mm (37.2 in)	0.98
Tacoma City Hall	United States	10,464 km (6,502 mi)	11.4 C (52.4 F)	941.9 mm (37.1 in)	0.99

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

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