Duvan Weather Records (RSM00028537)

Record envelope, standing records and threshold days for Duvan (RSM00028537), Russia, with 84 years of record.

Key Facts for Duvan

Duvan (RSM00028537) is a weather station in Russia at 55.70 latitude and 57.90 longitude, 338 m (1,109 ft) above sea level.
The station reports from 1936 to 2019, 84 years of record.
1,464 records set at Duvan still stand.
Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
Duvan tied a daily record high minimum temperature of 16.6 C (61.9 F) on 31 May 2019.

About the Station

Location: Russia, 55.70 latitude, 57.90 longitude.
Elevation: 338 m (1,109 ft).
Period of record: 1936 to 2019, 84 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 Duvan. 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 Duvan, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	4.6 C (40.3 F)	-49.9 C (-57.8 F)	n/a	n/a
Feb	8.4 C (47.1 F)	-43.5 C (-46.3 F)	n/a	n/a
Mar	13.8 C (56.8 F)	-34.7 C (-30.5 F)	n/a	n/a
Apr	28.4 C (83.1 F)	-24.8 C (-12.6 F)	n/a	n/a
May	35.2 C (95.4 F)	-13.4 C (7.9 F)	n/a	n/a
Jun	37.2 C (99.0 F)	-4.4 C (24.1 F)	n/a	n/a
Jul	38.4 C (101.1 F)	0.3 C (32.5 F)	n/a	n/a
Aug	35.0 C (95.0 F)	-3.0 C (26.6 F)	n/a	n/a
Sep	31.5 C (88.7 F)	-9.7 C (14.5 F)	n/a	n/a
Oct	22.8 C (73.0 F)	-21.8 C (-7.2 F)	n/a	n/a
Nov	14.0 C (57.2 F)	-41.5 C (-42.7 F)	n/a	n/a
Dec	5.5 C (41.9 F)	-48.8 C (-55.8 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Duvan still stand. 1969 holds the most, with 46.

Standing records at Duvan by the year they were set
Year set	Standing records
1936	15
1937	7
1938	20
1939	16
1940	33
1941	21
1942	14
1943	9
1944	12
1945	12
1946	13
1947	16
1948	18
1949	16
1950	21
1951	22
1952	29
1953	18
1954	20
1955	37
1956	15
1957	30
1958	29
1959	4
1960	21
1961	15
1962	17
1963	14
1964	11
1965	14
1966	19
1967	10
1968	31
1969	46
1970	13
1971	28
1972	17
1973	21
1974	6
1975	21
1976	27
1977	15
1978	21
1979	24
1980	5
1981	26
1982	19
1983	12
1984	15
1985	7
1986	4
1987	15
1988	13
1989	17
1990	12
1991	17
1992	12
1993	12
1994	11
1995	34
1996	13
1997	18
1998	17
1999	23
2000	12
2001	5
2002	19
2003	7
2004	15
2005	8
2006	27
2007	21
2008	20
2009	15
2010	39
2011	8
2012	32
2013	15
2014	23
2015	13
2016	26
2017	8
2018	6
2019	5

All-Time Record Progression

4 new records

4 all-time records were set at Duvan between 24 July 1971 and 26 June 1987. Each dot is a new record.

When Duvan set new all-time records
Date	Kind	Detail
1971-07-24	Record high minimum temperature	Record high minimum temperature 21.8 C (71.2 F)
1978-12-31	Record low minimum temperature	Record low minimum temperature -48.8 C (-55.8 F)
1979-01-01	Record low minimum temperature	Record low minimum temperature -49.9 C (-57.8 F)
1987-06-26	Record high minimum temperature	Record high minimum temperature 22.1 C (71.8 F)

Wettest Day of Each Month

Sep: 72.4 mm (2.9 in)

The wettest day on record for each calendar month at Duvan. The most was 72.4 mm (2.9 in) on 3 September 1953.

Record daily precipitation for each month at Duvan
Month	Record daily precipitation (mm)	Date
Jan	19.2 mm (0.8 in)	26 January 2007
Feb	18.6 mm (0.7 in)	21 February 2008
Mar	15.0 mm (0.6 in)	6 March 2005
Apr	22.5 mm (0.9 in)	28 April 1968
May	44.9 mm (1.8 in)	15 May 2007
Jun	58.3 mm (2.3 in)	10 June 2002
Jul	54.7 mm (2.2 in)	26 July 1985
Aug	49.5 mm (1.9 in)	18 August 1947
Sep	72.4 mm (2.9 in)	3 September 1953
Oct	35.9 mm (1.4 in)	4 October 1956
Nov	19.3 mm (0.8 in)	1 November 1960
Dec	19.5 mm (0.8 in)	11 December 1981

Period of Record Coverage

1936 to 2019

84 years of record at Duvan, 1936 to 2019. 3 years have data for under 90 percent of days and are left out of rankings: 1936, 1977, 2019.

Days with data per year at Duvan
Year	Days with data	Share of year	Complete
1936	165	45%	No
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	365	100%	Yes
1948	366	100%	Yes
1949	365	100%	Yes
1950	365	100%	Yes
1951	365	100%	Yes
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	363	99%	Yes
1966	332	91%	Yes
1967	364	100%	Yes
1968	362	99%	Yes
1969	361	99%	Yes
1970	356	98%	Yes
1971	364	100%	Yes
1972	362	99%	Yes
1973	356	98%	Yes
1974	361	99%	Yes
1975	355	97%	Yes
1976	354	97%	Yes
1977	291	80%	No
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	364	100%	Yes
2006	360	99%	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	365	100%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	365	100%	Yes
2018	365	100%	Yes
2019	181	50%	No

Latest Records

Latest records at Duvan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 2019	Duvan, RU	daily high min (Tie)	16.6 C (61.9 F)	tie	56 years	6 of 100 (Routine)
13 May 2019	Duvan, RU	daily high max	29.3 C (84.7 F)	0.8 C (1.4 F)	4 years	10 of 100 (Routine)
12 May 2019	Duvan, RU	daily high max	29.8 C (85.6 F)	2.2 C (4.0 F)	14 years	15 of 100 (Routine)
7 May 2019	Duvan, RU	daily high max (Tie)	28.0 C (82.4 F)	tie	22 years	3 of 100 (Routine)
29 April 2019	Duvan, RU	daily low max	-0.4 C (31.3 F)	1.6 C (2.9 F)	50 years	25 of 100 (Routine)
18 April 2019	Duvan, RU	daily low min	-12.2 C (10.0 F)	2.7 C (4.9 F)	72 years	34 of 100 (Routine)
12 March 2019	Duvan, RU	daily high min	0.4 C (32.7 F)	1.7 C (3.1 F)	9 years	12 of 100 (Routine)
3 February 2019	Duvan, RU	daily rain	3.4 mm (0.13 in)	0.3 mm (0.01 in)	36 years	19 of 100 (Routine)
26 October 2018	Duvan, RU	daily high max	17.0 C (62.6 F)	4.6 C (8.3 F)	36 years	26 of 100 (Routine)
26 October 2018	Duvan, RU	daily high min	8.0 C (46.4 F)	4.0 C (7.2 F)	12 years	19 of 100 (Routine)
25 October 2018	Duvan, RU	daily high max	14.5 C (58.1 F)	1.4 C (2.5 F)	27 years	18 of 100 (Routine)
25 September 2018	Duvan, RU	daily high max	21.9 C (71.4 F)	0.8 C (1.4 F)	68 years	29 of 100 (Routine)
29 July 2018	Duvan, RU	daily rain	30.6 mm (1.2 in)	13.9 mm (0.5 in)	13 years	32 of 100 (Routine)
10 July 2018	Duvan, RU	daily rain	36.9 mm (1.5 in)	8.9 mm (0.35 in)	49 years	35 of 100 (Notable)
1 June 2018	Duvan, RU	daily low max	6.7 C (44.1 F)	1.3 C (2.3 F)	59 years	27 of 100 (Routine)
28 May 2018	Duvan, RU	daily rain	16.8 mm (0.7 in)	1.8 mm (0.07 in)	1 year	11 of 100 (Routine)
24 May 2018	Duvan, RU	daily high min	16.4 C (61.5 F)	1.6 C (2.9 F)	47 years	25 of 100 (Routine)
27 February 2018	Duvan, RU	daily rain	12.3 mm (0.5 in)	5.7 mm (0.22 in)	32 years	20 of 100 (Routine)
29 December 2017	Duvan, RU	daily high min	-0.1 C (31.8 F)	1.3 C (2.3 F)	20 years	15 of 100 (Routine)
9 December 2017	Duvan, RU	daily rain	7.3 mm (0.29 in)	1.0 mm (0.04 in)	32 years	20 of 100 (Routine)

Climate Trend

79 complete years, 1937 to 2018

One stripe for each of 79 complete years at Duvan, 1937 to 2018. Blue stripes are years cooler than the station's own mean of 2.0 C (35.5 F); red stripes are warmer. The coolest year was 1941, at -1.1 C (29.9 F), and the warmest was 1995, at 4.5 C (40.0 F). The strongest colour marks a difference of 3.2 C (5.8 F).

Annual mean temperature at Duvan as warming stripes, 1937 to 2018
Year	Annual mean temperature	Difference from the station mean
1937	0.9 C	-1.05 C
1938	1.2 C	-0.79 C
1939	1.3 C	-0.63 C
1940	0.5 C	-1.42 C
1941	-1.1 C	-3.10 C
1942	0.1 C	-1.86 C
1943	1.6 C	-0.38 C
1945	-0.4 C	-2.35 C
1946	1.0 C	-0.98 C
1947	1.3 C	-0.67 C
1948	1.8 C	-0.12 C
1949	1.3 C	-0.62 C
1950	0.7 C	-1.26 C
1951	1.3 C	-0.63 C
1952	1.2 C	-0.74 C
1953	0.9 C	-1.07 C
1954	0.6 C	-1.40 C
1955	1.1 C	-0.84 C
1956	0.1 C	-1.83 C
1957	2.3 C	+0.38 C
1958	1.7 C	-0.27 C
1959	0.9 C	-1.05 C
1960	0.7 C	-1.26 C
1961	2.6 C	+0.59 C
1962	3.1 C	+1.18 C
1963	1.6 C	-0.39 C
1964	1.3 C	-0.68 C
1965	1.6 C	-0.34 C
1967	3.1 C	+1.10 C
1968	1.0 C	-1.00 C
1969	-1.1 C	-3.06 C
1970	1.6 C	-0.37 C
1971	2.0 C	+0.07 C
1972	0.9 C	-1.04 C
1973	1.8 C	-0.19 C
1974	2.5 C	+0.54 C
1975	3.4 C	+1.48 C
1976	0.5 C	-1.44 C
1978	1.5 C	-0.42 C
1979	1.8 C	-0.17 C
1980	1.4 C	-0.58 C
1981	3.8 C	+1.82 C
1982	2.7 C	+0.77 C
1983	3.8 C	+1.81 C
1984	1.5 C	-0.47 C
1985	1.6 C	-0.41 C
1986	1.2 C	-0.77 C
1987	1.5 C	-0.45 C
1988	3.1 C	+1.09 C
1989	3.2 C	+1.27 C
1990	3.0 C	+1.07 C
1991	3.6 C	+1.68 C
1992	2.2 C	+0.26 C
1993	1.1 C	-0.83 C
1994	1.9 C	-0.02 C
1995	4.5 C	+2.50 C
1996	1.8 C	-0.15 C
1997	2.8 C	+0.79 C
1998	2.1 C	+0.14 C
1999	2.6 C	+0.65 C
2000	3.2 C	+1.19 C
2001	2.4 C	+0.48 C
2002	2.2 C	+0.22 C
2003	2.8 C	+0.86 C
2004	3.4 C	+1.42 C
2005	3.1 C	+1.16 C
2006	2.6 C	+0.68 C
2007	3.0 C	+1.04 C
2008	4.0 C	+2.07 C
2009	2.7 C	+0.73 C
2010	3.1 C	+1.16 C
2011	2.3 C	+0.36 C
2012	3.7 C	+1.75 C
2013	3.5 C	+1.58 C
2014	1.9 C	-0.09 C
2015	3.3 C	+1.37 C
2016	3.3 C	+1.30 C
2017	2.8 C	+0.81 C
2018	2.0 C	+0.06 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.4) per decade over 1937 to 2018. In Fahrenheit: 0.6 F (0.4 to 0.7) per decade. The slope is a straight line fitted to 79 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Duvan
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.3 C (0.2 to 0.4) per decade	0.6 F (0.4 to 0.7) per decade	1937 to 2018	79	Rise
Mean daily maximum	0.3 C (0.2 to 0.4) per decade	0.5 F (0.4 to 0.7) per decade	1937 to 2018	79	Rise
Mean daily minimum	0.3 C (0.3 to 0.4) per decade	0.6 F (0.5 to 0.8) per decade	1937 to 2018	79	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

1936 to 2019

Yearly extremes at Duvan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	38.4 C (101.1 F)	1940	32.3 C (90.1 F)	84
Coldest night (TNn)	-49.9 C (-57.8 F)	1979	-35.3 C (-31.6 F)	84
Wettest day (Rx1day)	72.4 mm (2.9 in)	1953	28.2 mm (1.1 in)	84
Wettest five days (Rx5day)	137.9 mm (5.4 in)	2002	51.4 mm (2.0 in)	84
Longest dry spell (CDD)	56 days	1954	28 days	84

Hottest day (TXx)

The hottest day of the year at Duvan, 1936 to 2019. The record is 38.4 C (101.1 F) in 1940, marked on the chart; the median year is 32.3 C (90.1 F).

Hottest day (TXx) at Duvan by year
Year	Hottest day (TXx)
1936	35.2 C (95.4 F)
1937	29.2 C (84.6 F)
1938	31.9 C (89.4 F)
1939	31.7 C (89.1 F)
1940	38.4 C (101.1 F)
1941	30.1 C (86.2 F)
1942	30.7 C (87.3 F)
1943	30.8 C (87.4 F)
1944	32.2 C (90.0 F)
1945	30.5 C (86.9 F)
1946	30.0 C (86.0 F)
1947	32.4 C (90.3 F)
1948	33.3 C (91.9 F)
1949	32.6 C (90.7 F)
1950	30.4 C (86.7 F)
1951	33.5 C (92.3 F)
1952	36.2 C (97.2 F)
1953	34.0 C (93.2 F)
1954	37.2 C (99.0 F)
1955	32.3 C (90.1 F)
1956	32.3 C (90.1 F)
1957	33.0 C (91.4 F)
1958	32.7 C (90.9 F)
1959	29.4 C (84.9 F)
1960	32.9 C (91.2 F)
1961	30.4 C (86.7 F)
1962	33.9 C (93.0 F)
1963	32.5 C (90.5 F)
1964	27.8 C (82.0 F)
1965	33.4 C (92.1 F)
1966	31.0 C (87.8 F)
1967	29.1 C (84.4 F)
1968	30.4 C (86.7 F)
1969	30.8 C (87.4 F)
1970	29.0 C (84.2 F)
1971	33.8 C (92.8 F)
1972	32.0 C (89.6 F)
1973	30.6 C (87.1 F)
1974	30.6 C (87.1 F)
1975	36.1 C (97.0 F)
1976	30.0 C (86.0 F)
1977	30.6 C (87.1 F)
1978	31.0 C (87.8 F)
1979	29.4 C (84.9 F)
1980	29.2 C (84.6 F)
1981	32.8 C (91.0 F)
1982	33.6 C (92.5 F)
1983	31.9 C (89.4 F)
1984	30.4 C (86.7 F)
1985	32.5 C (90.5 F)
1986	29.0 C (84.2 F)
1987	35.0 C (95.0 F)
1988	32.9 C (91.2 F)
1989	34.8 C (94.6 F)
1990	33.1 C (91.6 F)
1991	35.6 C (96.1 F)
1992	29.9 C (85.8 F)
1993	32.4 C (90.3 F)
1994	32.2 C (90.0 F)
1995	34.6 C (94.3 F)
1996	32.8 C (91.0 F)
1997	32.3 C (90.1 F)
1998	34.1 C (93.4 F)
1999	31.5 C (88.7 F)
2000	32.9 C (91.2 F)
2001	33.5 C (92.3 F)
2002	31.6 C (88.9 F)
2003	32.3 C (90.1 F)
2004	34.1 C (93.4 F)
2005	31.2 C (88.2 F)
2006	33.0 C (91.4 F)
2007	30.1 C (86.2 F)
2008	31.2 C (88.2 F)
2009	32.6 C (90.7 F)
2010	35.0 C (95.0 F)
2011	32.9 C (91.2 F)
2012	36.0 C (96.8 F)
2013	33.9 C (93.0 F)
2014	30.4 C (86.7 F)
2015	32.2 C (90.0 F)
2016	34.4 C (93.9 F)
2017	30.2 C (86.4 F)
2018	29.4 C (84.9 F)
2019	29.8 C (85.6 F)

Coldest night (TNn)

The coldest night of the year at Duvan, 1936 to 2019. The record is -49.9 C (-57.8 F) in 1979, marked on the chart; the median year is -35.3 C (-31.6 F).

Coldest night (TNn) at Duvan by year
Year	Coldest night (TNn)
1936	-30.3 C (-22.5 F)
1937	-38.0 C (-36.4 F)
1938	-37.5 C (-35.5 F)
1939	-36.6 C (-33.9 F)
1940	-44.8 C (-48.6 F)
1941	-39.1 C (-38.4 F)
1942	-43.4 C (-46.1 F)
1943	-40.6 C (-41.1 F)
1944	-31.1 C (-24.0 F)
1945	-39.2 C (-38.6 F)
1946	-36.1 C (-33.0 F)
1947	-35.1 C (-31.2 F)
1948	-39.4 C (-38.9 F)
1949	-33.6 C (-28.5 F)
1950	-39.7 C (-39.5 F)
1951	-43.5 C (-46.3 F)
1952	-32.2 C (-26.0 F)
1953	-41.5 C (-42.7 F)
1954	-38.1 C (-36.6 F)
1955	-43.1 C (-45.6 F)
1956	-40.0 C (-40.0 F)
1957	-35.4 C (-31.7 F)
1958	-44.7 C (-48.5 F)
1959	-34.7 C (-30.5 F)
1960	-36.1 C (-33.0 F)
1961	-31.9 C (-25.4 F)
1962	-30.8 C (-23.4 F)
1963	-34.6 C (-30.3 F)
1964	-37.7 C (-35.9 F)
1965	-34.7 C (-30.5 F)
1966	-34.1 C (-29.4 F)
1967	-37.5 C (-35.5 F)
1968	-41.2 C (-42.2 F)
1969	-43.4 C (-46.1 F)
1970	-40.9 C (-41.6 F)
1971	-32.7 C (-26.9 F)
1972	-36.6 C (-33.9 F)
1973	-42.0 C (-43.6 F)
1974	-38.2 C (-36.8 F)
1975	-27.5 C (-17.5 F)
1976	-42.6 C (-44.7 F)
1977	-38.8 C (-37.8 F)
1978	-48.8 C (-55.8 F)
1979	-49.9 C (-57.8 F)
1980	-35.0 C (-31.0 F)
1981	-30.4 C (-22.7 F)
1982	-32.9 C (-27.2 F)
1983	-32.7 C (-26.9 F)
1984	-38.9 C (-38.0 F)
1985	-31.0 C (-23.8 F)
1986	-36.4 C (-33.5 F)
1987	-35.6 C (-32.1 F)
1988	-30.5 C (-22.9 F)
1989	-36.3 C (-33.3 F)
1990	-32.5 C (-26.5 F)
1991	-35.9 C (-32.6 F)
1992	-30.5 C (-22.9 F)
1993	-31.3 C (-24.3 F)
1994	-39.1 C (-38.4 F)
1995	-28.9 C (-20.0 F)
1996	-32.8 C (-27.0 F)
1997	-34.8 C (-30.6 F)
1998	-32.1 C (-25.8 F)
1999	-38.8 C (-37.8 F)
2000	-32.6 C (-26.7 F)
2001	-33.8 C (-28.8 F)
2002	-41.2 C (-42.2 F)
2003	-34.5 C (-30.1 F)
2004	-31.4 C (-24.5 F)
2005	-30.0 C (-22.0 F)
2006	-41.2 C (-42.2 F)
2007	-32.4 C (-26.3 F)
2008	-30.1 C (-22.2 F)
2009	-35.3 C (-31.5 F)
2010	-34.1 C (-29.4 F)
2011	-34.4 C (-29.9 F)
2012	-33.1 C (-27.6 F)
2013	-32.0 C (-25.6 F)
2014	-38.5 C (-37.3 F)
2015	-32.0 C (-25.6 F)
2016	-36.9 C (-34.4 F)
2017	-31.0 C (-23.8 F)
2018	-31.0 C (-23.8 F)
2019	-31.4 C (-24.5 F)

Wettest day (Rx1day)

The wettest day of the year at Duvan, 1936 to 2019. The record is 72.4 mm (2.9 in) in 1953, marked on the chart; the median year is 28.2 mm (1.1 in).

Wettest day (Rx1day) at Duvan by year
Year	Wettest day (Rx1day)
1936	29.8 mm (1.2 in)
1937	44.9 mm (1.8 in)
1938	26.4 mm (1.0 in)
1939	22.0 mm (0.9 in)
1940	20.3 mm (0.8 in)
1941	28.6 mm (1.1 in)
1942	31.5 mm (1.2 in)
1943	28.7 mm (1.1 in)
1944	53.7 mm (2.1 in)
1945	40.9 mm (1.6 in)
1946	28.8 mm (1.1 in)
1947	49.5 mm (1.9 in)
1948	24.6 mm (1.0 in)
1949	36.5 mm (1.4 in)
1950	43.5 mm (1.7 in)
1951	32.5 mm (1.3 in)
1952	20.4 mm (0.8 in)
1953	72.4 mm (2.9 in)
1954	29.0 mm (1.1 in)
1955	24.7 mm (1.0 in)
1956	35.9 mm (1.4 in)
1957	37.4 mm (1.5 in)
1958	18.7 mm (0.7 in)
1959	33.3 mm (1.3 in)
1960	34.3 mm (1.4 in)
1961	26.0 mm (1.0 in)
1962	30.3 mm (1.2 in)
1963	25.9 mm (1.0 in)
1964	26.0 mm (1.0 in)
1965	13.7 mm (0.5 in)
1966	25.2 mm (1.0 in)
1967	35.9 mm (1.4 in)
1968	28.0 mm (1.1 in)
1969	21.7 mm (0.9 in)
1970	18.7 mm (0.7 in)
1971	17.6 mm (0.7 in)
1972	29.4 mm (1.2 in)
1973	45.9 mm (1.8 in)
1974	20.3 mm (0.8 in)
1975	16.0 mm (0.6 in)
1976	20.7 mm (0.8 in)
1977	43.3 mm (1.7 in)
1978	25.5 mm (1.0 in)
1979	16.4 mm (0.6 in)
1980	35.1 mm (1.4 in)
1981	29.7 mm (1.2 in)
1982	22.8 mm (0.9 in)
1983	22.2 mm (0.9 in)
1984	25.2 mm (1.0 in)
1985	54.7 mm (2.2 in)
1986	42.4 mm (1.7 in)
1987	46.2 mm (1.8 in)
1988	31.3 mm (1.2 in)
1989	21.5 mm (0.8 in)
1990	24.1 mm (0.9 in)
1991	23.6 mm (0.9 in)
1992	17.2 mm (0.7 in)
1993	27.2 mm (1.1 in)
1994	48.4 mm (1.9 in)
1995	21.1 mm (0.8 in)
1996	13.6 mm (0.5 in)
1997	21.8 mm (0.9 in)
1998	29.8 mm (1.2 in)
1999	25.9 mm (1.0 in)
2000	29.5 mm (1.2 in)
2001	26.2 mm (1.0 in)
2002	58.3 mm (2.3 in)
2003	32.9 mm (1.3 in)
2004	24.4 mm (1.0 in)
2005	34.0 mm (1.3 in)
2006	19.7 mm (0.8 in)
2007	44.9 mm (1.8 in)
2008	31.4 mm (1.2 in)
2009	27.8 mm (1.1 in)
2010	17.2 mm (0.7 in)
2011	17.1 mm (0.7 in)
2012	26.5 mm (1.0 in)
2013	31.5 mm (1.2 in)
2014	24.9 mm (1.0 in)
2015	45.6 mm (1.8 in)
2016	34.4 mm (1.4 in)
2017	28.3 mm (1.1 in)
2018	36.9 mm (1.5 in)
2019	18.2 mm (0.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Duvan, 1936 to 2019. The record is 137.9 mm (5.4 in) in 2002, marked on the chart; the median year is 51.4 mm (2.0 in).

Wettest five days (Rx5day) at Duvan by year
Year	Wettest five days (Rx5day)
1936	49.0 mm (1.9 in)
1937	69.4 mm (2.7 in)
1938	60.8 mm (2.4 in)
1939	38.7 mm (1.5 in)
1940	34.4 mm (1.4 in)
1941	60.0 mm (2.4 in)
1942	50.8 mm (2.0 in)
1943	96.4 mm (3.8 in)
1944	61.2 mm (2.4 in)
1945	102.2 mm (4.0 in)
1946	40.7 mm (1.6 in)
1947	75.9 mm (3.0 in)
1948	41.8 mm (1.6 in)
1949	53.8 mm (2.1 in)
1950	57.8 mm (2.3 in)
1951	51.3 mm (2.0 in)
1952	40.3 mm (1.6 in)
1953	90.2 mm (3.6 in)
1954	46.0 mm (1.8 in)
1955	50.0 mm (2.0 in)
1956	52.3 mm (2.1 in)
1957	63.1 mm (2.5 in)
1958	30.1 mm (1.2 in)
1959	52.2 mm (2.1 in)
1960	57.2 mm (2.3 in)
1961	36.5 mm (1.4 in)
1962	62.9 mm (2.5 in)
1963	49.8 mm (2.0 in)
1964	52.6 mm (2.1 in)
1965	28.3 mm (1.1 in)
1966	46.3 mm (1.8 in)
1967	56.8 mm (2.2 in)
1968	47.3 mm (1.9 in)
1969	50.8 mm (2.0 in)
1970	47.0 mm (1.9 in)
1971	49.5 mm (1.9 in)
1972	30.8 mm (1.2 in)
1973	51.5 mm (2.0 in)
1974	27.9 mm (1.1 in)
1975	30.1 mm (1.2 in)
1976	51.6 mm (2.0 in)
1977	57.1 mm (2.2 in)
1978	54.2 mm (2.1 in)
1979	30.5 mm (1.2 in)
1980	44.6 mm (1.8 in)
1981	52.7 mm (2.1 in)
1982	33.1 mm (1.3 in)
1983	40.8 mm (1.6 in)
1984	38.8 mm (1.5 in)
1985	85.8 mm (3.4 in)
1986	72.4 mm (2.9 in)
1987	67.8 mm (2.7 in)
1988	55.8 mm (2.2 in)
1989	51.4 mm (2.0 in)
1990	56.3 mm (2.2 in)
1991	45.6 mm (1.8 in)
1992	39.5 mm (1.6 in)
1993	71.4 mm (2.8 in)
1994	75.7 mm (3.0 in)
1995	40.1 mm (1.6 in)
1996	24.7 mm (1.0 in)
1997	49.4 mm (1.9 in)
1998	44.0 mm (1.7 in)
1999	64.0 mm (2.5 in)
2000	53.8 mm (2.1 in)
2001	39.1 mm (1.5 in)
2002	137.9 mm (5.4 in)
2003	40.4 mm (1.6 in)
2004	70.8 mm (2.8 in)
2005	73.8 mm (2.9 in)
2006	37.1 mm (1.5 in)
2007	86.1 mm (3.4 in)
2008	62.2 mm (2.4 in)
2009	44.0 mm (1.7 in)
2010	38.6 mm (1.5 in)
2011	43.0 mm (1.7 in)
2012	28.3 mm (1.1 in)
2013	62.7 mm (2.5 in)
2014	68.8 mm (2.7 in)
2015	68.3 mm (2.7 in)
2016	68.8 mm (2.7 in)
2017	42.9 mm (1.7 in)
2018	78.2 mm (3.1 in)
2019	32.3 mm (1.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Duvan, 1936 to 2019. The record is 56 days in 1954, marked on the chart; the median year is 28 days.

Longest dry spell (CDD) at Duvan by year
Year	Longest dry spell (CDD)
1936	33 days
1937	36 days
1938	30 days
1939	31 days
1940	17 days
1941	42 days
1942	25 days
1943	25 days
1944	32 days
1945	43 days
1946	37 days
1947	24 days
1948	19 days
1949	48 days
1950	31 days
1951	37 days
1952	38 days
1953	37 days
1954	56 days
1955	32 days
1956	34 days
1957	34 days
1958	25 days
1959	37 days
1960	45 days
1961	20 days
1962	27 days
1963	23 days
1964	41 days
1965	23 days
1966	20 days
1967	35 days
1968	35 days
1969	31 days
1970	36 days
1971	33 days
1972	25 days
1973	28 days
1974	32 days
1975	24 days
1976	25 days
1977	18 days
1978	30 days
1979	22 days
1980	37 days
1981	28 days
1982	29 days
1983	21 days
1984	47 days
1985	22 days
1986	27 days
1987	35 days
1988	29 days
1989	22 days
1990	20 days
1991	23 days
1992	29 days
1993	47 days
1994	17 days
1995	26 days
1996	56 days
1997	10 days
1998	24 days
1999	20 days
2000	18 days
2001	30 days
2002	20 days
2003	26 days
2004	21 days
2005	35 days
2006	17 days
2007	28 days
2008	22 days
2009	23 days
2010	34 days
2011	29 days
2012	29 days
2013	17 days
2014	24 days
2015	21 days
2016	19 days
2017	25 days
2018	41 days
2019	12 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

79 years with a frost

Across 79 years with a frost, the median last spring frost at Duvan falls on 25 May and the median first autumn frost on 17 September, which leaves a median of 114 days between them.

In 1989 to 2018 the median growing season was 123 days. That is 20 days more than in 1937 to 1968.

Fitted over all years, the growing season changes by +2.9 days per decade at this station.

Frost dates and growing season at Duvan
Measure	Median, all years	Earliest period (1937 to 1968)	Recent period (1989 to 2018)	Recent against earliest	Fitted trend
Last spring frost	25 May	29 May	20 May	9 days earlier	-1.5 days per decade
First autumn frost	17 September	10 September	19 September	9 days later	+1.4 days per decade
Growing days	114 days	103 days	123 days	20 days more	+2.9 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

81 years, 1937 to 2018

A day with at least 28.2 mm (1.1 in) of rain is expected about once in 2 years. A day with at least 68.1 mm (2.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Duvan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	28.2 mm (1.1 in)
5 years	37.9 mm (1.5 in)
10 years	44.7 mm (1.8 in)
25 years	53.7 mm (2.1 in)
50 years	60.8 mm (2.4 in)
100 years	68.1 mm (2.7 in)	Longer than the 81 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, 81 years of values from 1937 to 2018.

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: 72.4 mm (2.9 in) in 1953; 58.3 mm (2.3 in) in 2002; 54.7 mm (2.2 in) in 1985.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Duvan, at 1960, 1981 and 1998. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1960 ran 0.3 C (0.6 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1981 ran 0.2 C (0.4 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 1998 ran 0.3 C (0.5 F) lower than in the years before (possible change).

Suspected changes in the annual mean temperature at Duvan, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1960	+0.3	+0.6	likely	5
1981	+0.2	+0.4	likely	5
1998	-0.3	-0.5	possible	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.

Climate Twins

2004 to 2018 against 1961 to 1990

Over 2004 to 2018, Duvan had a mean temperature of 3.0 C (37.4 F) and 512.4 mm (20.2 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Sarapul (Russia, 272 km away), Kilmez (Russia, 440 km away) and Izevsk (Russia, 302 km away).

Climate twins of Duvan: stations whose 1961 to 1990 climate is closest to its 2004 to 2018 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Sarapul	Russia	272 km (169 mi)	3.1 C (37.5 F)	555.8 mm (21.9 in)	0.54
Kilmez	Russia	440 km (273 mi)	3.1 C (37.5 F)	541.4 mm (21.3 in)	0.57
Izevsk	Russia	302 km (188 mi)	2.7 C (36.8 F)	530.4 mm (20.9 in)	0.57

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 Duvan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Duvan 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 2026-10-15 (15 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).