Record highRecord low2026 daily maximum2026 daily minimum
The band shows the record high and record low for each calendar day at Lanzhou. 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 Lanzhou, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
17.1 C (62.8 F)
-22.0 C (-7.6 F)
n/a
n/a
Feb
21.0 C (69.8 F)
-19.5 C (-3.1 F)
n/a
n/a
Mar
28.4 C (83.1 F)
-16.3 C (2.7 F)
n/a
n/a
Apr
34.6 C (94.3 F)
-8.6 C (16.5 F)
n/a
n/a
May
34.7 C (94.5 F)
-1.2 C (29.8 F)
n/a
n/a
Jun
36.8 C (98.2 F)
4.6 C (40.3 F)
n/a
n/a
Jul
39.8 C (103.6 F)
7.6 C (45.7 F)
n/a
n/a
Aug
38.3 C (100.9 F)
5.4 C (41.7 F)
n/a
n/a
Sep
34.4 C (93.9 F)
0.4 C (32.7 F)
n/a
n/a
Oct
27.6 C (81.7 F)
-7.1 C (19.2 F)
n/a
n/a
Nov
20.3 C (68.5 F)
-16.5 C (2.3 F)
n/a
n/a
Dec
16.2 C (61.2 F)
-22.8 C (-9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Lanzhou still stand. 2004 holds the most, with 83.
Standing records at Lanzhou by the year they were set
Year set
Standing records
1951
58
1952
40
1953
23
1954
38
1955
29
1956
35
1957
26
1958
17
1959
20
1960
24
1961
14
1962
22
1963
11
1964
21
1965
15
1966
18
1967
17
1968
19
1969
25
1970
18
1971
10
1972
24
1973
11
1974
11
1975
21
1976
19
1977
18
1978
19
1979
27
1980
13
1981
19
1982
8
1983
14
1984
19
1985
12
1986
13
1987
31
1988
14
1989
18
1990
16
1991
18
1992
15
1993
21
1994
25
1995
13
1996
16
1997
38
1998
50
1999
34
2000
47
2001
34
2002
48
2003
36
2004
83
2005
39
2006
38
2007
48
2008
34
All-Time Record Progression
7 new records
7 all-time records were set at Lanzhou between 27 December 1991 and 31 December 2004. Each dot is a new record.
When Lanzhou set new all-time records
Date
Kind
Detail
1991-12-27
Record low maximum temperature
Record low maximum temperature -11.4 C (11.5 F)
2000-07-19
Record high minimum temperature
Record high minimum temperature 24.7 C (76.5 F)
2000-07-23
Record high maximum temperature
Record high maximum temperature 39.7 C (103.5 F)
2000-07-24
Record high maximum temperature
Record high maximum temperature 39.8 C (103.6 F)
2000-07-24
Record high minimum temperature
Record high minimum temperature 25.1 C (77.2 F)
2004-12-30
Record low minimum temperature
Record low minimum temperature -22.4 C (-8.3 F)
2004-12-31
Record low minimum temperature
Record low minimum temperature -22.8 C (-9.0 F)
Wettest Day of Each Month
Aug: 96.8 mm (3.8 in)
The wettest day on record for each calendar month at Lanzhou. The most was 96.8 mm (3.8 in) on 7 August 1978.
Record daily precipitation for each month at Lanzhou
Month
Record daily precipitation (mm)
Date
Jan
4.4 mm (0.17 in)
30 January 1991
Feb
4.6 mm (0.18 in)
5 February 1974
Mar
15.0 mm (0.6 in)
28 March 1967
Apr
30.2 mm (1.2 in)
17 April 1970
May
45.0 mm (1.8 in)
25 May 1985
Jun
46.6 mm (1.8 in)
26 June 1986
Jul
50.3 mm (2.0 in)
15 July 1999
Aug
96.8 mm (3.8 in)
7 August 1978
Sep
39.6 mm (1.6 in)
6 September 1955
Oct
30.5 mm (1.2 in)
4 October 2000
Nov
14.2 mm (0.6 in)
5 November 1977
Dec
5.4 mm (0.21 in)
7 December 1975
Period of Record Coverage
1951 to 2015
Complete yearUnder 90 percent of days
59 years of record at Lanzhou, 1951 to 2015. 1 years have data for under 90 percent of days and are left out of rankings: 2015.
Cooler than the station meanWarmer than the station mean
One stripe for each of 58 complete years at Lanzhou, 1951 to 2008. 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 2005, at 8.6 C (47.4 F), and the warmest was 1998, at 12.3 C (54.1 F). The strongest colour marks a difference of 2.0 C (3.6 F).
Annual mean temperature at Lanzhou as warming stripes, 1951 to 2008
Year
Annual mean temperature
Difference from the station mean
1951
8.9 C
-1.42 C
1952
9.4 C
-0.93 C
1953
11.0 C
+0.67 C
1954
10.3 C
-0.05 C
1955
10.5 C
+0.17 C
1956
9.5 C
-0.81 C
1957
9.2 C
-1.10 C
1958
9.8 C
-0.53 C
1959
9.8 C
-0.49 C
1960
10.1 C
-0.26 C
1961
10.1 C
-0.26 C
1962
9.7 C
-0.60 C
1963
10.2 C
-0.09 C
1964
9.7 C
-0.57 C
1965
10.0 C
-0.31 C
1966
10.1 C
-0.24 C
1967
8.8 C
-1.52 C
1968
9.6 C
-0.67 C
1969
10.0 C
-0.28 C
1970
9.3 C
-1.05 C
1971
10.2 C
-0.15 C
1972
9.7 C
-0.65 C
1973
10.3 C
+0.02 C
1974
9.9 C
-0.42 C
1975
10.0 C
-0.34 C
1976
9.2 C
-1.10 C
1977
9.7 C
-0.59 C
1978
10.3 C
-0.04 C
1979
10.2 C
-0.16 C
1980
10.4 C
+0.13 C
1981
10.4 C
+0.10 C
1982
10.6 C
+0.28 C
1983
10.0 C
-0.33 C
1984
9.6 C
-0.69 C
1985
10.1 C
-0.23 C
1986
10.3 C
-0.02 C
1987
11.2 C
+0.88 C
1988
10.6 C
+0.28 C
1989
10.8 C
+0.44 C
1990
11.1 C
+0.83 C
1991
11.1 C
+0.83 C
1992
10.3 C
+0.01 C
1993
10.5 C
+0.21 C
1994
11.4 C
+1.08 C
1995
10.8 C
+0.48 C
1996
10.4 C
+0.11 C
1997
11.7 C
+1.41 C
1998
12.3 C
+1.98 C
1999
12.0 C
+1.64 C
2000
11.8 C
+1.46 C
2001
11.7 C
+1.43 C
2002
11.9 C
+1.61 C
2003
11.7 C
+1.38 C
2004
8.6 C
-1.70 C
2005
8.6 C
-1.75 C
2006
9.4 C
-0.90 C
2007
12.0 C
+1.69 C
2008
11.5 C
+1.16 C
The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1951 to 2008. In Fahrenheit: 0.5 F (0.3 to 0.7) 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 Lanzhou
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.2 to 0.4) per decade
0.5 F (0.3 to 0.7) per decade
1951 to 2008
58
Rise
Mean daily maximum
0.2 C (0.1 to 0.3) per decade
0.3 F (0.2 to 0.5) per decade
1951 to 2008
58
Rise
Mean daily minimum
0.4 C (0.2 to 0.5) per decade
0.7 F (0.3 to 1.0) per decade
1951 to 2008
58
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 2015
Yearly extremes at Lanzhou: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
39.8 C (103.6 F)
2000
35.2 C (95.4 F)
59
Coldest night (TNn)
-22.8 C (-9.0 F)
2004
-16.7 C (1.9 F)
58
Wettest day (Rx1day)
96.8 mm (3.8 in)
1978
33.7 mm (1.3 in)
59
Wettest five days (Rx5day)
137.7 mm (5.4 in)
1951
49.1 mm (1.9 in)
58
Longest dry spell (CDD)
113 days
1999
67 days
58
Hottest day (TXx)
The hottest day of the year at Lanzhou, 1951 to 2015. The record is 39.8 C (103.6 F) in 2000, marked on the chart; the median year is 35.2 C (95.4 F).
Hottest day (TXx) at Lanzhou by year
Year
Hottest day (TXx)
1951
35.0 C (95.0 F)
1952
36.9 C (98.4 F)
1953
39.1 C (102.4 F)
1954
36.2 C (97.2 F)
1955
36.4 C (97.5 F)
1956
34.4 C (93.9 F)
1957
34.6 C (94.3 F)
1958
33.8 C (92.8 F)
1959
35.2 C (95.4 F)
1960
34.3 C (93.7 F)
1961
35.7 C (96.3 F)
1962
34.1 C (93.4 F)
1963
34.8 C (94.6 F)
1964
34.0 C (93.2 F)
1965
34.7 C (94.5 F)
1966
36.7 C (98.1 F)
1967
34.4 C (93.9 F)
1968
32.6 C (90.7 F)
1969
35.7 C (96.3 F)
1970
34.7 C (94.5 F)
1971
36.0 C (96.8 F)
1972
36.6 C (97.9 F)
1973
34.4 C (93.9 F)
1974
34.6 C (94.3 F)
1975
36.8 C (98.2 F)
1976
35.3 C (95.5 F)
1977
33.7 C (92.7 F)
1978
35.5 C (95.9 F)
1979
32.7 C (90.9 F)
1980
35.9 C (96.6 F)
1981
35.7 C (96.3 F)
1982
35.6 C (96.1 F)
1983
34.4 C (93.9 F)
1984
33.5 C (92.3 F)
1985
35.0 C (95.0 F)
1986
35.1 C (95.2 F)
1987
34.5 C (94.1 F)
1988
36.8 C (98.2 F)
1989
34.3 C (93.7 F)
1990
35.3 C (95.5 F)
1991
36.1 C (97.0 F)
1992
33.2 C (91.8 F)
1993
34.0 C (93.2 F)
1994
35.6 C (96.1 F)
1995
35.3 C (95.5 F)
1996
33.7 C (92.7 F)
1997
38.0 C (100.4 F)
1998
36.6 C (97.9 F)
1999
38.0 C (100.4 F)
2000
39.8 C (103.6 F)
2001
36.9 C (98.4 F)
2002
38.0 C (100.4 F)
2003
34.3 C (93.7 F)
2004
33.7 C (92.7 F)
2005
35.8 C (96.4 F)
2006
36.6 C (97.9 F)
2007
34.3 C (93.7 F)
2008
35.9 C (96.6 F)
2015
-2.9 C (26.8 F)
Coldest night (TNn)
The coldest night of the year at Lanzhou, 1951 to 2015. The record is -22.8 C (-9.0 F) in 2004, marked on the chart; the median year is -16.7 C (1.9 F).
Coldest night (TNn) at Lanzhou by year
Year
Coldest night (TNn)
1951
-21.3 C (-6.3 F)
1952
-20.4 C (-4.7 F)
1953
-15.8 C (3.6 F)
1954
-19.9 C (-3.8 F)
1955
-21.3 C (-6.3 F)
1956
-19.5 C (-3.1 F)
1957
-17.1 C (1.2 F)
1958
-20.5 C (-4.9 F)
1959
-18.7 C (-1.7 F)
1960
-17.0 C (1.4 F)
1961
-19.0 C (-2.2 F)
1962
-17.3 C (0.9 F)
1963
-19.2 C (-2.6 F)
1964
-21.7 C (-7.1 F)
1965
-16.9 C (1.6 F)
1966
-16.2 C (2.8 F)
1967
-17.7 C (0.1 F)
1968
-16.5 C (2.3 F)
1969
-15.7 C (3.7 F)
1970
-16.1 C (3.0 F)
1971
-16.3 C (2.7 F)
1972
-17.6 C (0.3 F)
1973
-17.0 C (1.4 F)
1974
-16.6 C (2.1 F)
1975
-19.7 C (-3.5 F)
1976
-17.4 C (0.7 F)
1977
-17.7 C (0.1 F)
1978
-16.9 C (1.6 F)
1979
-14.6 C (5.7 F)
1980
-17.0 C (1.4 F)
1981
-16.8 C (1.8 F)
1982
-12.6 C (9.3 F)
1983
-15.8 C (3.6 F)
1984
-14.6 C (5.7 F)
1985
-14.2 C (6.4 F)
1986
-12.5 C (9.5 F)
1987
-14.0 C (6.8 F)
1988
-14.4 C (6.1 F)
1989
-16.2 C (2.8 F)
1990
-12.9 C (8.8 F)
1991
-19.3 C (-2.7 F)
1992
-14.9 C (5.2 F)
1993
-15.9 C (3.4 F)
1994
-14.2 C (6.4 F)
1995
-13.1 C (8.4 F)
1996
-12.3 C (9.9 F)
1997
-12.1 C (10.2 F)
1998
-16.8 C (1.8 F)
1999
-14.6 C (5.7 F)
2000
-12.8 C (9.0 F)
2001
-11.3 C (11.7 F)
2002
-14.3 C (6.3 F)
2003
-12.8 C (9.0 F)
2004
-22.8 C (-9.0 F)
2005
-21.0 C (-5.8 F)
2006
-22.0 C (-7.6 F)
2007
-11.9 C (10.6 F)
2008
-18.0 C (-0.4 F)
2015
n/a
Wettest day (Rx1day)
The wettest day of the year at Lanzhou, 1951 to 2015. The record is 96.8 mm (3.8 in) in 1978, marked on the chart; the median year is 33.7 mm (1.3 in).
Wettest day (Rx1day) at Lanzhou by year
Year
Wettest day (Rx1day)
1951
74.2 mm (2.9 in)
1952
24.4 mm (1.0 in)
1953
25.7 mm (1.0 in)
1954
38.6 mm (1.5 in)
1955
39.6 mm (1.6 in)
1956
35.8 mm (1.4 in)
1957
41.2 mm (1.6 in)
1958
40.0 mm (1.6 in)
1959
33.9 mm (1.3 in)
1960
39.0 mm (1.5 in)
1961
25.2 mm (1.0 in)
1962
21.8 mm (0.9 in)
1963
16.3 mm (0.6 in)
1964
50.0 mm (2.0 in)
1965
24.6 mm (1.0 in)
1966
42.1 mm (1.7 in)
1967
33.7 mm (1.3 in)
1968
27.6 mm (1.1 in)
1969
27.6 mm (1.1 in)
1970
42.1 mm (1.7 in)
1971
35.7 mm (1.4 in)
1972
19.6 mm (0.8 in)
1973
40.1 mm (1.6 in)
1974
14.6 mm (0.6 in)
1975
19.5 mm (0.8 in)
1976
48.7 mm (1.9 in)
1977
22.7 mm (0.9 in)
1978
96.8 mm (3.8 in)
1979
35.1 mm (1.4 in)
1980
14.6 mm (0.6 in)
1981
25.4 mm (1.0 in)
1982
22.6 mm (0.9 in)
1983
35.0 mm (1.4 in)
1984
20.9 mm (0.8 in)
1985
45.0 mm (1.8 in)
1986
46.6 mm (1.8 in)
1987
18.9 mm (0.7 in)
1988
22.6 mm (0.9 in)
1989
25.4 mm (1.0 in)
1990
56.9 mm (2.2 in)
1991
34.0 mm (1.3 in)
1992
38.2 mm (1.5 in)
1993
40.0 mm (1.6 in)
1994
24.3 mm (1.0 in)
1995
33.6 mm (1.3 in)
1996
50.0 mm (2.0 in)
1997
28.1 mm (1.1 in)
1998
32.0 mm (1.3 in)
1999
50.3 mm (2.0 in)
2000
31.9 mm (1.3 in)
2001
40.4 mm (1.6 in)
2002
34.9 mm (1.4 in)
2003
41.2 mm (1.6 in)
2004
22.4 mm (0.9 in)
2005
16.9 mm (0.7 in)
2006
23.5 mm (0.9 in)
2007
41.9 mm (1.6 in)
2008
29.7 mm (1.2 in)
2015
1.8 mm (0.07 in)
Wettest five days (Rx5day)
The wettest five days of the year at Lanzhou, 1951 to 2015. The record is 137.7 mm (5.4 in) in 1951, marked on the chart; the median year is 49.1 mm (1.9 in).
Wettest five days (Rx5day) at Lanzhou by year
Year
Wettest five days (Rx5day)
1951
137.7 mm (5.4 in)
1952
48.5 mm (1.9 in)
1953
42.2 mm (1.7 in)
1954
46.3 mm (1.8 in)
1955
74.1 mm (2.9 in)
1956
52.5 mm (2.1 in)
1957
41.9 mm (1.6 in)
1958
76.0 mm (3.0 in)
1959
90.2 mm (3.6 in)
1960
63.3 mm (2.5 in)
1961
40.4 mm (1.6 in)
1962
35.2 mm (1.4 in)
1963
34.3 mm (1.4 in)
1964
57.3 mm (2.3 in)
1965
28.6 mm (1.1 in)
1966
62.9 mm (2.5 in)
1967
53.9 mm (2.1 in)
1968
49.9 mm (2.0 in)
1969
47.3 mm (1.9 in)
1970
59.3 mm (2.3 in)
1971
39.0 mm (1.5 in)
1972
42.1 mm (1.7 in)
1973
63.7 mm (2.5 in)
1974
27.7 mm (1.1 in)
1975
23.9 mm (0.9 in)
1976
80.0 mm (3.1 in)
1977
36.9 mm (1.5 in)
1978
96.8 mm (3.8 in)
1979
81.0 mm (3.2 in)
1980
33.2 mm (1.3 in)
1981
43.2 mm (1.7 in)
1982
33.5 mm (1.3 in)
1983
60.1 mm (2.4 in)
1984
34.5 mm (1.4 in)
1985
68.5 mm (2.7 in)
1986
68.3 mm (2.7 in)
1987
46.8 mm (1.8 in)
1988
34.5 mm (1.4 in)
1989
30.1 mm (1.2 in)
1990
89.9 mm (3.5 in)
1991
67.6 mm (2.7 in)
1992
50.8 mm (2.0 in)
1993
47.2 mm (1.9 in)
1994
55.9 mm (2.2 in)
1995
71.3 mm (2.8 in)
1996
67.3 mm (2.6 in)
1997
42.3 mm (1.7 in)
1998
42.5 mm (1.7 in)
1999
68.9 mm (2.7 in)
2000
67.6 mm (2.7 in)
2001
47.2 mm (1.9 in)
2002
49.7 mm (2.0 in)
2003
56.3 mm (2.2 in)
2004
32.8 mm (1.3 in)
2005
40.4 mm (1.6 in)
2006
28.0 mm (1.1 in)
2007
88.1 mm (3.5 in)
2008
32.4 mm (1.3 in)
2015
n/a
Longest dry spell (CDD)
The longest dry spell of the year at Lanzhou, 1951 to 2015. The record is 113 days in 1999, marked on the chart; the median year is 67 days.
Longest dry spell (CDD) at Lanzhou by year
Year
Longest dry spell (CDD)
1951
38 days
1952
47 days
1953
59 days
1954
27 days
1955
104 days
1956
86 days
1957
66 days
1958
85 days
1959
69 days
1960
77 days
1961
34 days
1962
96 days
1963
70 days
1964
36 days
1965
92 days
1966
92 days
1967
44 days
1968
59 days
1969
68 days
1970
68 days
1971
54 days
1972
47 days
1973
70 days
1974
47 days
1975
59 days
1976
87 days
1977
43 days
1978
38 days
1979
80 days
1980
72 days
1981
89 days
1982
55 days
1983
73 days
1984
82 days
1985
82 days
1986
74 days
1987
71 days
1988
66 days
1989
44 days
1990
69 days
1991
61 days
1992
72 days
1993
51 days
1994
65 days
1995
69 days
1996
61 days
1997
99 days
1998
80 days
1999
113 days
2000
52 days
2001
56 days
2002
42 days
2003
62 days
2004
53 days
2005
81 days
2006
55 days
2007
69 days
2008
35 days
2015
n/a
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
58 years with a frost
Across 58 years with a frost, the median last spring frost at Lanzhou falls on 7 April and the median first autumn frost on 26 October, which leaves a median of 203 days between them.
Fitted over all years, the growing season changes by +3.2 days per decade at this station.
Frost dates and growing season at Lanzhou
Measure
Median, all years
Earliest period
Recent period (1979 to 2008)
Recent against earliest
Fitted trend
Last spring frost
7 April
n/a
29 March
n/a
-1.5 days per decade
First autumn frost
26 October
n/a
27 October
n/a
+1.7 days per decade
Growing days
203 days
n/a
210 days
n/a
+3.2 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, 1951 to 2008
A day with at least 31.7 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 78.6 mm (3.1 in) of rain is expected about once in 100 years.
Rainfall return levels at Lanzhou: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
31.7 mm (1.2 in)
5 years
43.8 mm (1.7 in)
10 years
51.9 mm (2.0 in)
25 years
62.5 mm (2.5 in)
50 years
70.5 mm (2.8 in)
100 years
78.6 mm (3.1 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 1951 to 2008.
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: 96.8 mm (3.8 in) in 1978; 74.2 mm (2.9 in) in 1951; 56.9 mm (2.2 in) in 1990.
Download the Data
Data for Lanzhou standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Lanzhou 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.