Tianshui Weather Records (CHM00057006)

Record envelope, standing records and threshold days for Tianshui (CHM00057006), China, with 53 years of record.

Key Facts for Tianshui

Tianshui (CHM00057006) is a weather station in China at 34.58 latitude and 105.75 longitude, 1,143 m (3,750 ft) above sea level.
The station reports from 1951 to 2003, 53 years of record.
1,464 records set at Tianshui still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Tianshui set a daily record precipitation of 3.0 mm (0.12 in) on 4 December 2003.

About the Station

Location: China, 34.58 latitude, 105.75 longitude.
Elevation: 1,143 m (3,750 ft).
Period of record: 1951 to 2003, 53 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 Tianshui. 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 Tianshui, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	13.1 C (55.6 F)	-19.2 C (-2.6 F)	n/a	n/a
Feb	20.2 C (68.4 F)	-16.6 C (2.1 F)	n/a	n/a
Mar	27.9 C (82.2 F)	-10.0 C (14.0 F)	n/a	n/a
Apr	31.8 C (89.2 F)	-6.4 C (20.5 F)	n/a	n/a
May	33.9 C (93.0 F)	1.8 C (35.2 F)	n/a	n/a
Jun	37.2 C (99.0 F)	5.5 C (41.9 F)	n/a	n/a
Jul	38.2 C (100.8 F)	10.6 C (51.1 F)	n/a	n/a
Aug	36.2 C (97.2 F)	8.4 C (47.1 F)	n/a	n/a
Sep	36.2 C (97.2 F)	1.2 C (34.2 F)	n/a	n/a
Oct	28.5 C (83.3 F)	-5.1 C (22.8 F)	n/a	n/a
Nov	21.6 C (70.9 F)	-11.6 C (11.1 F)	n/a	n/a
Dec	26.0 C (78.8 F)	-17.4 C (0.7 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Tianshui still stand. 1990 holds the most, with 66.

Standing records at Tianshui by the year they were set
Year set	Standing records
1951	35
1952	47
1953	27
1954	42
1955	41
1956	32
1957	31
1958	33
1959	28
1960	33
1961	12
1962	34
1963	29
1964	34
1965	24
1966	31
1967	21
1968	30
1969	31
1970	19
1971	18
1972	34
1973	22
1974	16
1975	26
1976	30
1977	18
1978	21
1979	32
1980	22
1981	19
1982	17
1983	17
1984	17
1985	14
1986	21
1987	41
1988	29
1989	16
1990	66
1991	18
1992	19
1993	22
1994	31
1995	22
1996	37
1997	45
1998	32
1999	17
2000	29
2001	20
2002	42
2003	20

All-Time Record Progression

3 new records

3 all-time records were set at Tianshui between 20 July 1997 and 24 July 2000. Each dot is a new record.

When Tianshui set new all-time records
Date	Kind	Detail
1997-07-20	Record high maximum temperature	Record high maximum temperature 37.7 C (99.9 F)
1997-07-21	Record high maximum temperature	Record high maximum temperature 38.2 C (100.8 F)
2000-07-24	Record high minimum temperature	Record high minimum temperature 25.1 C (77.2 F)

Wettest Day of Each Month

Aug: 88.1 mm (3.5 in)

The wettest day on record for each calendar month at Tianshui. The most was 88.1 mm (3.5 in) on 29 August 1970.

Record daily precipitation for each month at Tianshui
Month	Record daily precipitation (mm)	Date
Jan	6.4 mm (0.25 in)	24 January 2003
Feb	12.0 mm (0.5 in)	23 February 1952
Mar	32.0 mm (1.3 in)	31 March 2003
Apr	39.9 mm (1.6 in)	28 April 1998
May	40.9 mm (1.6 in)	19 May 1987
Jun	81.7 mm (3.2 in)	30 June 1990
Jul	69.5 mm (2.7 in)	7 July 1965
Aug	88.1 mm (3.5 in)	29 August 1970
Sep	51.7 mm (2.0 in)	6 September 1951
Oct	38.0 mm (1.5 in)	5 October 1973
Nov	20.6 mm (0.8 in)	18 November 1961
Dec	7.5 mm (0.30 in)	20 December 1989

Period of Record Coverage

1951 to 2003

53 years of record at Tianshui, 1951 to 2003. Every year has data for at least 90 percent of its days.

Days with data per year at Tianshui
Year	Days with data	Share of year	Complete
1951	365	100%	Yes
1952	336	92%	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	364	100%	Yes
1991	365	100%	Yes
1992	365	100%	Yes
1993	365	100%	Yes
1994	362	99%	Yes
1995	365	100%	Yes
1996	366	100%	Yes
1997	365	100%	Yes
1998	346	95%	Yes
1999	343	94%	Yes
2000	356	97%	Yes
2001	361	99%	Yes
2002	343	94%	Yes
2003	336	92%	Yes

Latest Records

Latest records at Tianshui
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 December 2003	Tianshui, CN	daily rain	3.0 mm (0.12 in)	1.5 mm (0.06 in)	1 year	12 of 100 (Routine)
3 December 2003	Tianshui, CN	daily rain	2.8 mm (0.11 in)	0.8 mm (0.03 in)	28 years	17 of 100 (Routine)
25 November 2003	Tianshui, CN	daily rain	6.9 mm (0.27 in)	3.5 mm (0.14 in)	40 years	20 of 100 (Routine)
9 November 2003	Tianshui, CN	daily low max	1.9 C (35.4 F)	3.3 C (5.9 F)	44 years	25 of 100 (Routine)
8 November 2003	Tianshui, CN	daily rain	4.8 mm (0.19 in)	2.7 mm (0.11 in)	44 years	20 of 100 (Routine)
8 November 2003	Tianshui, CN	daily low max	1.7 C (35.1 F)	3.0 C (5.4 F)	21 years	17 of 100 (Routine)
30 September 2003	Tianshui, CN	daily rain	27.2 mm (1.1 in)	14.3 mm (0.6 in)	42 years	33 of 100 (Routine)
30 September 2003	Tianshui, CN	daily low max (Tie)	11.7 C (53.1 F)	tie	36 years	3 of 100 (Routine)
29 September 2003	Tianshui, CN	daily rain	21.1 mm (0.8 in)	5.8 mm (0.23 in)	33 years	20 of 100 (Routine)
18 September 2003	Tianshui, CN	daily rain	27.7 mm (1.1 in)	0.4 mm (0.02 in)	36 years	15 of 100 (Routine)
15 September 2003	Tianshui, CN	daily high max (Tie)	28.9 C (84.0 F)	tie	33 years	3 of 100 (Routine)
28 August 2003	Tianshui, CN	daily rain	38.6 mm (1.5 in)	17.6 mm (0.7 in)	41 years	33 of 100 (Routine)
24 August 2003	Tianshui, CN	daily high min	20.9 C (69.6 F)	0.4 C (0.7 F)	49 years	20 of 100 (Routine)
17 August 2003	Tianshui, CN	daily low min	12.4 C (54.3 F)	0.1 C (0.2 F)	50 years	20 of 100 (Routine)
2 August 2003	Tianshui, CN	daily low max	19.6 C (67.3 F)	1.6 C (2.9 F)	50 years	24 of 100 (Routine)
29 July 2003	Tianshui, CN	daily high min (Tie)	21.7 C (71.1 F)	tie	50 years	5 of 100 (Routine)
27 July 2003	Tianshui, CN	daily rain	46.7 mm (1.8 in)	8.7 mm (0.34 in)	49 years	27 of 100 (Routine)
22 July 2003	Tianshui, CN	daily rain	24.4 mm (1.0 in)	1.7 mm (0.07 in)	36 years	17 of 100 (Routine)
30 June 2003	Tianshui, CN	daily low min	13.2 C (55.8 F)	1.0 C (1.8 F)	26 years	16 of 100 (Routine)
24 June 2003	Tianshui, CN	daily high min	21.5 C (70.7 F)	1.4 C (2.5 F)	2 years	10 of 100 (Routine)

Climate Trend

45 complete years, 1951 to 1997

One stripe for each of 45 complete years at Tianshui, 1951 to 1997. Blue stripes are years cooler than the station's own mean of 11.5 C (52.7 F); red stripes are warmer. The coolest year was 1984, at 10.5 C (51.0 F), and the warmest was 1990, at 12.9 C (55.1 F). The strongest colour marks a difference of 1.4 C (2.5 F).

Annual mean temperature at Tianshui as warming stripes, 1951 to 1997
Year	Annual mean temperature	Difference from the station mean
1951	11.4 C	-0.10 C
1953	12.3 C	+0.80 C
1954	11.3 C	-0.18 C
1955	11.3 C	-0.19 C
1956	11.0 C	-0.47 C
1957	11.1 C	-0.41 C
1958	11.8 C	+0.28 C
1959	11.4 C	-0.10 C
1960	11.7 C	+0.22 C
1961	11.5 C	+0.06 C
1962	11.5 C	-0.03 C
1963	11.1 C	-0.35 C
1964	10.9 C	-0.56 C
1965	11.6 C	+0.09 C
1966	12.0 C	+0.54 C
1967	10.6 C	-0.84 C
1968	11.2 C	-0.31 C
1969	11.5 C	-0.02 C
1970	11.0 C	-0.44 C
1971	11.5 C	-0.03 C
1972	11.3 C	-0.18 C
1973	12.0 C	+0.47 C
1974	11.3 C	-0.15 C
1975	11.1 C	-0.34 C
1976	10.6 C	-0.87 C
1977	11.5 C	-0.03 C
1978	11.7 C	+0.23 C
1979	11.7 C	+0.26 C
1980	11.3 C	-0.16 C
1981	11.3 C	-0.14 C
1982	11.4 C	-0.08 C
1983	11.1 C	-0.39 C
1984	10.5 C	-0.94 C
1985	11.2 C	-0.27 C
1986	11.6 C	+0.11 C
1987	12.1 C	+0.66 C
1988	11.4 C	-0.08 C
1989	11.2 C	-0.25 C
1990	12.9 C	+1.37 C
1991	11.9 C	+0.37 C
1992	11.3 C	-0.20 C
1993	11.5 C	+0.06 C
1995	12.3 C	+0.81 C
1996	11.9 C	+0.37 C
1997	12.7 C	+1.26 C

The fitted trend in annual mean temperature here over 1951 to 1997 is 0.11 C (0.00 to 0.21) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.19 F (0.00 to 0.38) per decade. The slope is a straight line fitted to 45 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Tianshui
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.11 C (0.00 to 0.21) per decade	0.19 F (0.00 to 0.38) per decade	1951 to 1997	45	Not clearly different from zero
Mean daily maximum	0.1 C (-0.1 to 0.3) per decade	0.2 F (-0.1 to 0.5) per decade	1951 to 1997	45	Not clearly different from zero
Mean daily minimum	0.11 C (0.01 to 0.22) per decade	0.20 F (0.01 to 0.39) per decade	1951 to 1997	45	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

1951 to 2003

Yearly extremes at Tianshui: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.2 C (100.8 F)	1997	34.0 C (93.2 F)	53
Coldest night (TNn)	-19.2 C (-2.6 F)	1955	-12.4 C (9.7 F)	53
Wettest day (Rx1day)	88.1 mm (3.5 in)	1970	41.6 mm (1.6 in)	53
Wettest five days (Rx5day)	109.9 mm (4.3 in)	1990	66.6 mm (2.6 in)	53
Longest dry spell (CDD)	70 days	1957	39 days	53

Hottest day (TXx)

The hottest day of the year at Tianshui, 1951 to 2003. The record is 38.2 C (100.8 F) in 1997, marked on the chart; the median year is 34.0 C (93.2 F).

Hottest day (TXx) at Tianshui by year
Year	Hottest day (TXx)
1951	35.2 C (95.4 F)
1952	35.4 C (95.7 F)
1953	35.7 C (96.3 F)
1954	33.0 C (91.4 F)
1955	33.4 C (92.1 F)
1956	34.5 C (94.1 F)
1957	34.5 C (94.1 F)
1958	34.0 C (93.2 F)
1959	33.0 C (91.4 F)
1960	33.8 C (92.8 F)
1961	33.0 C (91.4 F)
1962	33.9 C (93.0 F)
1963	33.8 C (92.8 F)
1964	33.8 C (92.8 F)
1965	33.2 C (91.8 F)
1966	37.2 C (99.0 F)
1967	32.8 C (91.0 F)
1968	33.4 C (92.1 F)
1969	33.5 C (92.3 F)
1970	34.5 C (94.1 F)
1971	33.7 C (92.7 F)
1972	35.0 C (95.0 F)
1973	35.7 C (96.3 F)
1974	35.6 C (96.1 F)
1975	33.6 C (92.5 F)
1976	34.5 C (94.1 F)
1977	34.0 C (93.2 F)
1978	33.6 C (92.5 F)
1979	33.4 C (92.1 F)
1980	33.6 C (92.5 F)
1981	34.8 C (94.6 F)
1982	34.2 C (93.6 F)
1983	35.3 C (95.5 F)
1984	32.5 C (90.5 F)
1985	33.3 C (91.9 F)
1986	33.0 C (91.4 F)
1987	33.4 C (92.1 F)
1988	33.6 C (92.5 F)
1989	31.7 C (89.1 F)
1990	33.8 C (92.8 F)
1991	35.2 C (95.4 F)
1992	32.4 C (90.3 F)
1993	32.3 C (90.1 F)
1994	34.9 C (94.8 F)
1995	35.1 C (95.2 F)
1996	36.1 C (97.0 F)
1997	38.2 C (100.8 F)
1998	36.3 C (97.3 F)
1999	35.4 C (95.7 F)
2000	37.7 C (99.9 F)
2001	36.0 C (96.8 F)
2002	36.2 C (97.2 F)
2003	34.4 C (93.9 F)

Coldest night (TNn)

The coldest night of the year at Tianshui, 1951 to 2003. The record is -19.2 C (-2.6 F) in 1955, marked on the chart; the median year is -12.4 C (9.7 F).

Coldest night (TNn) at Tianshui by year
Year	Coldest night (TNn)
1951	-12.0 C (10.4 F)
1952	-12.9 C (8.8 F)
1953	-10.7 C (12.7 F)
1954	-16.2 C (2.8 F)
1955	-19.2 C (-2.6 F)
1956	-14.6 C (5.7 F)
1957	-11.1 C (12.0 F)
1958	-16.6 C (2.1 F)
1959	-12.8 C (9.0 F)
1960	-10.6 C (12.9 F)
1961	-13.3 C (8.1 F)
1962	-12.2 C (10.0 F)
1963	-14.8 C (5.4 F)
1964	-15.2 C (4.6 F)
1965	-16.5 C (2.3 F)
1966	-11.5 C (11.3 F)
1967	-12.9 C (8.8 F)
1968	-12.0 C (10.4 F)
1969	-12.8 C (9.0 F)
1970	-12.4 C (9.7 F)
1971	-14.1 C (6.6 F)
1972	-13.7 C (7.3 F)
1973	-12.0 C (10.4 F)
1974	-10.4 C (13.3 F)
1975	-15.6 C (3.9 F)
1976	-13.0 C (8.6 F)
1977	-13.9 C (7.0 F)
1978	-13.1 C (8.4 F)
1979	-13.6 C (7.5 F)
1980	-13.7 C (7.3 F)
1981	-13.1 C (8.4 F)
1982	-12.7 C (9.1 F)
1983	-13.9 C (7.0 F)
1984	-12.2 C (10.0 F)
1985	-12.0 C (10.4 F)
1986	-9.6 C (14.7 F)
1987	-11.6 C (11.1 F)
1988	-11.4 C (11.5 F)
1989	-12.4 C (9.7 F)
1990	-9.9 C (14.2 F)
1991	-17.4 C (0.7 F)
1992	-10.4 C (13.3 F)
1993	-12.9 C (8.8 F)
1994	-11.0 C (12.2 F)
1995	-10.0 C (14.0 F)
1996	-11.2 C (11.8 F)
1997	-11.2 C (11.8 F)
1998	-12.0 C (10.4 F)
1999	-11.9 C (10.6 F)
2000	-9.4 C (15.1 F)
2001	-9.0 C (15.8 F)
2002	-14.0 C (6.8 F)
2003	-10.5 C (13.1 F)

Wettest day (Rx1day)

The wettest day of the year at Tianshui, 1951 to 2003. The record is 88.1 mm (3.5 in) in 1970, marked on the chart; the median year is 41.6 mm (1.6 in).

Wettest day (Rx1day) at Tianshui by year
Year	Wettest day (Rx1day)
1951	55.7 mm (2.2 in)
1952	32.9 mm (1.3 in)
1953	58.5 mm (2.3 in)
1954	32.7 mm (1.3 in)
1955	40.7 mm (1.6 in)
1956	49.0 mm (1.9 in)
1957	36.7 mm (1.4 in)
1958	47.1 mm (1.9 in)
1959	41.3 mm (1.6 in)
1960	27.4 mm (1.1 in)
1961	42.7 mm (1.7 in)
1962	61.7 mm (2.4 in)
1963	52.0 mm (2.0 in)
1964	51.6 mm (2.0 in)
1965	69.5 mm (2.7 in)
1966	50.0 mm (2.0 in)
1967	46.2 mm (1.8 in)
1968	46.1 mm (1.8 in)
1969	23.4 mm (0.9 in)
1970	88.1 mm (3.5 in)
1971	44.4 mm (1.7 in)
1972	41.6 mm (1.6 in)
1973	38.0 mm (1.5 in)
1974	27.6 mm (1.1 in)
1975	42.9 mm (1.7 in)
1976	37.5 mm (1.5 in)
1977	25.8 mm (1.0 in)
1978	43.1 mm (1.7 in)
1979	27.7 mm (1.1 in)
1980	61.5 mm (2.4 in)
1981	44.8 mm (1.8 in)
1982	24.0 mm (0.9 in)
1983	50.7 mm (2.0 in)
1984	59.5 mm (2.3 in)
1985	35.7 mm (1.4 in)
1986	40.9 mm (1.6 in)
1987	40.9 mm (1.6 in)
1988	67.5 mm (2.7 in)
1989	35.6 mm (1.4 in)
1990	81.7 mm (3.2 in)
1991	36.0 mm (1.4 in)
1992	47.8 mm (1.9 in)
1993	54.8 mm (2.2 in)
1994	26.7 mm (1.1 in)
1995	37.5 mm (1.5 in)
1996	29.3 mm (1.2 in)
1997	49.8 mm (2.0 in)
1998	39.9 mm (1.6 in)
1999	15.5 mm (0.6 in)
2000	31.0 mm (1.2 in)
2001	41.1 mm (1.6 in)
2002	16.3 mm (0.6 in)
2003	46.7 mm (1.8 in)

Wettest five days (Rx5day)

The wettest five days of the year at Tianshui, 1951 to 2003. The record is 109.9 mm (4.3 in) in 1990, marked on the chart; the median year is 66.6 mm (2.6 in).

Wettest five days (Rx5day) at Tianshui by year
Year	Wettest five days (Rx5day)
1951	102.2 mm (4.0 in)
1952	58.1 mm (2.3 in)
1953	60.1 mm (2.4 in)
1954	49.6 mm (2.0 in)
1955	59.7 mm (2.4 in)
1956	92.5 mm (3.6 in)
1957	65.4 mm (2.6 in)
1958	66.6 mm (2.6 in)
1959	59.7 mm (2.4 in)
1960	39.6 mm (1.6 in)
1961	58.9 mm (2.3 in)
1962	66.8 mm (2.6 in)
1963	57.4 mm (2.3 in)
1964	78.2 mm (3.1 in)
1965	87.4 mm (3.4 in)
1966	107.5 mm (4.2 in)
1967	72.6 mm (2.9 in)
1968	103.4 mm (4.1 in)
1969	46.8 mm (1.8 in)
1970	89.7 mm (3.5 in)
1971	63.8 mm (2.5 in)
1972	73.3 mm (2.9 in)
1973	71.2 mm (2.8 in)
1974	67.2 mm (2.6 in)
1975	91.1 mm (3.6 in)
1976	91.8 mm (3.6 in)
1977	52.8 mm (2.1 in)
1978	57.5 mm (2.3 in)
1979	67.2 mm (2.6 in)
1980	65.9 mm (2.6 in)
1981	105.1 mm (4.1 in)
1982	38.9 mm (1.5 in)
1983	80.2 mm (3.2 in)
1984	80.8 mm (3.2 in)
1985	59.7 mm (2.4 in)
1986	62.3 mm (2.5 in)
1987	53.0 mm (2.1 in)
1988	87.9 mm (3.5 in)
1989	66.4 mm (2.6 in)
1990	109.9 mm (4.3 in)
1991	43.6 mm (1.7 in)
1992	69.0 mm (2.7 in)
1993	88.2 mm (3.5 in)
1994	49.3 mm (1.9 in)
1995	48.0 mm (1.9 in)
1996	32.2 mm (1.3 in)
1997	69.9 mm (2.8 in)
1998	74.5 mm (2.9 in)
1999	16.0 mm (0.6 in)
2000	55.9 mm (2.2 in)
2001	71.6 mm (2.8 in)
2002	36.4 mm (1.4 in)
2003	92.5 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Tianshui, 1951 to 2003. The record is 70 days in 1957, marked on the chart; the median year is 39 days.

Longest dry spell (CDD) at Tianshui by year
Year	Longest dry spell (CDD)
1951	40 days
1952	32 days
1953	44 days
1954	22 days
1955	47 days
1956	47 days
1957	70 days
1958	42 days
1959	31 days
1960	44 days
1961	51 days
1962	41 days
1963	48 days
1964	20 days
1965	51 days
1966	46 days
1967	28 days
1968	31 days
1969	46 days
1970	37 days
1971	53 days
1972	36 days
1973	58 days
1974	47 days
1975	24 days
1976	49 days
1977	33 days
1978	39 days
1979	40 days
1980	38 days
1981	47 days
1982	54 days
1983	29 days
1984	25 days
1985	54 days
1986	23 days
1987	66 days
1988	60 days
1989	29 days
1990	26 days
1991	25 days
1992	31 days
1993	44 days
1994	19 days
1995	33 days
1996	45 days
1997	49 days
1998	17 days
1999	15 days
2000	9 days
2001	5 days
2002	23 days
2003	16 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

45 years with a frost

Across 45 years with a frost, the median last spring frost at Tianshui falls on 28 March and the median first autumn frost on 1 November, which leaves a median of 219 days between them.

Fitted over all years, the growing season changes by +0.4 days per decade at this station.

Frost dates and growing season at Tianshui
Measure	Median, all years	Earliest period	Recent period (1967 to 1997)	Recent against earliest	Fitted trend
Last spring frost	28 March	n/a	27 March	n/a	-1.0 days per decade
First autumn frost	1 November	n/a	29 October	n/a	-0.7 days per decade
Growing days	219 days	n/a	219 days	n/a	+0.4 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

48 years, 1951 to 1998

A day with at least 42.5 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 88.3 mm (3.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Tianshui: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	42.5 mm (1.7 in)
5 years	55.2 mm (2.2 in)
10 years	63.4 mm (2.5 in)
25 years	73.6 mm (2.9 in)
50 years	81.0 mm (3.2 in)	Longer than the 48 years of record
100 years	88.3 mm (3.5 in)	Longer than the 48 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, 48 years of values from 1951 to 1998.

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: 88.1 mm (3.5 in) in 1970; 81.7 mm (3.2 in) in 1990; 69.5 mm (2.7 in) in 1965.

Station Changes

1 suspected

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

Relative to 4 neighbouring stations, the station's annual mean temperature from 1990 ran 0.3 C (0.5 F) higher than in the years before (possible change).

Suspected changes in the annual mean temperature at Tianshui, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1990	+0.3	+0.5	possible	4

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 Tianshui standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Tianshui 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).