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Built 2026-10-19 (19 October 2026)

Ostaskov Weather Records (RSM00026389)

Record envelope, standing records and threshold days for Ostaskov (RSM00026389), Russia, with 76 years of record.

Key Facts for Ostaskov

  • Ostaskov (RSM00026389) is a weather station in Russia at 57.13 latitude and 33.12 longitude, 218 m (715 ft) above sea level.
  • The station reports from 1950 to 2025, 76 years of record.
  • 1,464 records set at Ostaskov still stand.
  • Records are tracked for tmax, prcp: an element needs 30 years of data to be eligible.
  • Ostaskov set a daily record low maximum temperature of 0.8 C (33.4 F) on 10 April 2025.

About the Station

  • Location: Russia, 57.13 latitude, 33.12 longitude.
  • Elevation: 218 m (715 ft).
  • Period of record: 1950 to 2025, 76 years.
  • Eligible elements: tmax, prcp.

Daily Record Envelope and 2026

8 days at or beyond a record
Daily record high and record low at Ostaskov, with 2026 drawn through them The band shows the record high and record low for each calendar day at Ostaskov. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Ostaskov. The lines show the 2026 daily maximum and minimum. 8 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Ostaskov, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan7.4 C (45.3 F)-35.1 C (-31.2 F)7.4 C (45.3 F)-9.1 C (15.6 F)
Feb7.6 C (45.7 F)-35.8 C (-32.4 F)5.0 C (41.0 F)-19.6 C (-3.3 F)
Mar16.6 C (61.9 F)-33.9 C (-29.0 F)14.4 C (57.9 F)-8.4 C (16.9 F)
Apr25.5 C (77.9 F)-18.9 C (-2.0 F)3.4 C (38.1 F)-4.1 C (24.6 F)
May32.5 C (90.5 F)-5.6 C (21.9 F)n/an/a
Jun32.0 C (89.6 F)0.1 C (32.2 F)n/a9.6 C (49.3 F)
Jul37.6 C (99.7 F)2.5 C (36.5 F)n/a16.2 C (61.2 F)
Aug36.8 C (98.2 F)0.0 C (32.0 F)n/an/a
Sep28.9 C (84.0 F)-7.0 C (19.4 F)n/an/a
Oct23.7 C (74.7 F)-12.9 C (8.8 F)n/an/a
Nov12.1 C (53.8 F)-29.9 C (-21.8 F)n/an/a
Dec11.0 C (51.8 F)-33.5 C (-28.3 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Ostaskov by the year they were set 1,464 records at Ostaskov still stand. 2006 holds the most, with 82. 02550751001961: 21962: 31963: 51964: 241965: 321966: 231967: 341968: 441969: 311970: 181971: 181973: 261974: 191975: 231976: 441977: 41989: 11990: 31991: 311992: 271993: 481994: 371995: 51996: 101997: 431998: 731999: 712000: 312001: 502002: 372003: 282004: 212005: 312006: 822007: 582008: 382009: 232010: 802011: 302012: 392013: 292014: 292015: 182016: 82017: 112018: 122019: 192020: 252021: 82022: 82023: 132024: 182025: 19196119671974199119972003200920152021
1,464 records at Ostaskov still stand. 2006 holds the most, with 82.
Standing records at Ostaskov by the year they were set
Year setStanding records
19612
19623
19635
196424
196532
196623
196734
196844
196931
197018
197118
197326
197419
197523
197644
19774
19891
19903
199131
199227
199348
199437
19955
199610
199743
199873
199971
200031
200150
200237
200328
200421
200531
200682
200758
200838
200923
201080
201130
201239
201329
201429
201518
20168
201711
201812
201919
202025
20218
20228
202313
202418
202519

Wettest Day of Each Month

Jul: 91.7 mm (3.6 in)
Record daily precipitation for each month at Ostaskov The wettest day on record for each calendar month at Ostaskov. The most was 91.7 mm (3.6 in) on 29 July 1977. 0255075100 Jan: 15.0 mm (0.6 in), 1 January 2004 Jan Feb: 16.1 mm (0.6 in), 20 February 1974 Feb Mar: 17.9 mm (0.7 in), 27 March 1981 Mar Apr: 23.8 mm (0.9 in), 20 April 1953 Apr May: 64.0 mm (2.5 in), 22 May 2013 May Jun: 68.7 mm (2.7 in), 30 June 1962 Jun Jul: 91.7 mm (3.6 in), 29 July 1977 Jul Aug: 70.1 mm (2.8 in), 16 August 1999 Aug Sep: 57.4 mm (2.3 in), 2 September 2014 Sep Oct: 42.2 mm (1.7 in), 7 October 2003 Oct Nov: 29.0 mm (1.1 in), 14 November 2001 Nov Dec: 17.2 mm (0.7 in), 22 December 1971 Dec
The wettest day on record for each calendar month at Ostaskov. The most was 91.7 mm (3.6 in) on 29 July 1977.
Record daily precipitation for each month at Ostaskov
MonthRecord daily precipitation (mm)Date
Jan15.0 mm (0.6 in)1 January 2004
Feb16.1 mm (0.6 in)20 February 1974
Mar17.9 mm (0.7 in)27 March 1981
Apr23.8 mm (0.9 in)20 April 1953
May64.0 mm (2.5 in)22 May 2013
Jun68.7 mm (2.7 in)30 June 1962
Jul91.7 mm (3.6 in)29 July 1977
Aug70.1 mm (2.8 in)16 August 1999
Sep57.4 mm (2.3 in)2 September 2014
Oct42.2 mm (1.7 in)7 October 2003
Nov29.0 mm (1.1 in)14 November 2001
Dec17.2 mm (0.7 in)22 December 1971

Period of Record Coverage

1960 to 2025
Days with data per year at Ostaskov 54 years of record at Ostaskov, 1960 to 2025. 54 years have data for under 90 percent of days and are left out of rankings: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967 and others. 1960: 5 of 366 days1961: 44 of 365 days1962: 52 of 365 days1963: 20 of 365 days1964: 281 of 366 days1965: 212 of 365 days1966: 214 of 365 days1967: 263 of 365 days1968: 282 of 366 days1969: 208 of 365 days1970: 254 of 365 days1971: 121 of 365 days1973: 224 of 365 days1974: 220 of 365 days1975: 210 of 365 days1976: 243 of 366 days1977: 37 of 365 days1989: 1 of 365 days1990: 69 of 365 days1991: 303 of 365 days1992: 201 of 366 days1993: 314 of 365 days1994: 305 of 365 days1995: 53 of 365 days1996: 61 of 366 days1997: 268 of 365 days1998: 275 of 365 days1999: 289 of 365 days2000: 298 of 366 days2001: 283 of 365 days2002: 272 of 365 days2003: 298 of 365 days2004: 287 of 366 days2005: 295 of 365 days2006: 300 of 365 days2007: 309 of 365 days2008: 301 of 366 days2009: 317 of 365 days2010: 310 of 365 days2011: 302 of 365 days2012: 321 of 366 days2013: 105 of 365 days2014: 40 of 365 days2015: 115 of 365 days2016: 104 of 366 days2017: 122 of 365 days2018: 95 of 365 days2019: 103 of 365 days2020: 130 of 366 days2021: 89 of 365 days2022: 112 of 365 days2023: 118 of 365 days2024: 100 of 366 days2025: 71 of 365 days196019701990200020102020
54 years of record at Ostaskov, 1960 to 2025. 54 years have data for under 90 percent of days and are left out of rankings: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967 and others.
Days with data per year at Ostaskov
YearDays with dataShare of yearComplete
196051%No
19614412%No
19625214%No
1963205%No
196428177%No
196521258%No
196621459%No
196726372%No
196828277%No
196920857%No
197025470%No
197112133%No
197322461%No
197422060%No
197521058%No
197624366%No
19773710%No
198910%No
19906919%No
199130383%No
199220155%No
199331486%No
199430584%No
19955315%No
19966117%No
199726873%No
199827575%No
199928979%No
200029881%No
200128378%No
200227275%No
200329882%No
200428778%No
200529581%No
200630082%No
200730985%No
200830182%No
200931787%No
201031085%No
201130283%No
201232188%No
201310529%No
20144011%No
201511532%No
201610428%No
201712233%No
20189526%No
201910328%No
202013036%No
20218924%No
202211231%No
202311832%No
202410027%No
20257119%No

Latest Records

20
Latest records at Ostaskov
DateStationRecordValueBeat old record byOld record stoodSignificance
10 April 2025Ostaskov, RUdaily low max0.8 C (33.4 F)1.0 C (1.8 F)14 years11 of 100 (Routine)
14 March 2025Ostaskov, RUdaily rain14.0 mm (0.6 in)3.0 mm (0.12 in)32 years20 of 100 (Routine)
11 March 2025Ostaskov, RUdaily high max12.4 C (54.3 F)2.8 C (5.0 F)10 years14 of 100 (Routine)
8 March 2025Ostaskov, RUdaily high max11.9 C (53.4 F)2.6 C (4.7 F)8 years13 of 100 (Routine)
4 March 2025Ostaskov, RUdaily rain7.1 mm (0.28 in)1.1 mm (0.04 in)40 years20 of 100 (Routine)
1 February 2025Ostaskov, RUdaily high max4.0 C (39.2 F)2.6 C (4.7 F)9 years12 of 100 (Routine)
31 January 2025Ostaskov, RUmonthly high max7.4 C (45.3 F)1.4 C (2.5 F)0 years18 of 100 (Routine)
30 January 2025Ostaskov, RUmonthly high max6.0 C (42.8 F)0.3 C (0.5 F)18 years21 of 100 (Routine)
27 January 2025Ostaskov, RUdaily high max4.2 C (39.6 F)1.4 C (2.5 F)30 years17 of 100 (Routine)
26 January 2025Ostaskov, RUdaily high max2.7 C (36.9 F)0.5 C (0.9 F)54 years22 of 100 (Routine)
2 January 2025Ostaskov, RUdaily rain10.9 mm (0.4 in)2.1 mm (0.08 in)56 years20 of 100 (Routine)
2 January 2025Ostaskov, RUdaily high max3.3 C (37.9 F)0.5 C (0.9 F)5 years7 of 100 (Routine)
25 December 2024Ostaskov, RUdaily high max0.5 C (32.9 F)0.5 C (0.9 F)58 years23 of 100 (Routine)
20 December 2024Ostaskov, RUdaily high max3.4 C (38.1 F)1.0 C (1.8 F)17 years12 of 100 (Routine)
27 November 2024Ostaskov, RUdaily rain (Tie)8.9 mm (0.35 in)tie4 years2 of 100 (Routine)
1 November 2024Ostaskov, RUdaily rain20.1 mm (0.8 in)6.5 mm (0.26 in)57 years20 of 100 (Routine)
3 April 2024Ostaskov, RUdaily high max14.6 C (58.3 F)1.6 C (2.9 F)16 years12 of 100 (Routine)
16 March 2024Ostaskov, RUdaily high max11.1 C (52.0 F)0.4 C (0.7 F)9 years8 of 100 (Routine)
15 March 2024Ostaskov, RUdaily high max11.1 C (52.0 F)0.4 C (0.7 F)9 years8 of 100 (Routine)
3 March 2024Ostaskov, RUdaily high max8.6 C (47.5 F)4.6 C (8.3 F)27 years23 of 100 (Routine)

Extremes by Year

1950 to 2025
Yearly extremes at Ostaskov: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.6 C (99.7 F)201027.8 C (82.0 F)54
Coldest night (TNn)-35.8 C (-32.4 F)2006-28.9 C (-20.0 F)55
Wettest day (Rx1day)91.7 mm (3.6 in)197729.0 mm (1.1 in)76
Wettest five days (Rx5day)137.8 mm (5.4 in)197746.3 mm (1.8 in)76
Longest dry spell (CDD)33 days199317 days76

Hottest day (TXx)

Hottest day (TXx) at Ostaskov by year The hottest day of the year at Ostaskov, 1950 to 2025. The record is 37.6 C (99.7 F) in 2010, marked on the chart; the median year is 27.8 C (82.0 F). 0102030401960198020002020Record: 37.6 C (99.7 F) in 2010
The hottest day of the year at Ostaskov, 1950 to 2025. The record is 37.6 C (99.7 F) in 2010, marked on the chart; the median year is 27.8 C (82.0 F).
Hottest day (TXx) at Ostaskov by year
YearHottest day (TXx)
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
19603.9 C (39.0 F)
196130.0 C (86.0 F)
196223.9 C (75.0 F)
196327.8 C (82.0 F)
196428.9 C (84.0 F)
196525.0 C (77.0 F)
196627.2 C (81.0 F)
196727.8 C (82.0 F)
196828.9 C (84.0 F)
196930.0 C (86.0 F)
197032.2 C (90.0 F)
197127.2 C (81.0 F)
1972n/a
197329.0 C (84.2 F)
197431.0 C (87.8 F)
197528.0 C (82.4 F)
197627.0 C (80.6 F)
197711.0 C (51.8 F)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
19895.6 C (42.1 F)
199015.1 C (59.2 F)
199128.9 C (84.0 F)
199231.4 C (88.5 F)
199325.8 C (78.4 F)
199429.3 C (84.7 F)
199528.0 C (82.4 F)
199626.5 C (79.7 F)
199728.2 C (82.8 F)
199832.0 C (89.6 F)
199933.0 C (91.4 F)
200029.1 C (84.4 F)
200132.6 C (90.7 F)
200231.0 C (87.8 F)
200329.6 C (85.3 F)
200426.9 C (80.4 F)
200530.1 C (86.2 F)
200631.3 C (88.3 F)
200732.5 C (90.5 F)
200831.6 C (88.9 F)
200927.1 C (80.8 F)
201037.6 C (99.7 F)
201131.4 C (88.5 F)
201231.7 C (89.1 F)
201325.6 C (78.1 F)
201413.1 C (55.6 F)
201512.7 C (54.9 F)
201615.9 C (60.6 F)
201714.7 C (58.5 F)
20184.9 C (40.8 F)
201912.7 C (54.9 F)
202018.8 C (65.8 F)
202113.6 C (56.5 F)
202212.7 C (54.9 F)
202319.7 C (67.5 F)
202414.6 C (58.3 F)
202514.4 C (57.9 F)

Coldest night (TNn)

Coldest night (TNn) at Ostaskov by year The coldest night of the year at Ostaskov, 1950 to 2025. The record is -35.8 C (-32.4 F) in 2006, marked on the chart; the median year is -28.9 C (-20.0 F). -40-30-20-1001960198020002020Record: -35.8 C (-32.4 F) in 2006
The coldest night of the year at Ostaskov, 1950 to 2025. The record is -35.8 C (-32.4 F) in 2006, marked on the chart; the median year is -28.9 C (-20.0 F).
Coldest night (TNn) at Ostaskov by year
YearColdest night (TNn)
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960-17.8 C (0.0 F)
1961-12.2 C (10.0 F)
1962-20.0 C (-4.0 F)
1963-28.9 C (-20.0 F)
1964-33.9 C (-29.0 F)
1965-27.2 C (-17.0 F)
1966-32.8 C (-27.0 F)
1967-30.0 C (-22.0 F)
1968-33.9 C (-29.0 F)
1969-32.8 C (-27.0 F)
1970-35.0 C (-31.0 F)
1971-27.2 C (-17.0 F)
1972n/a
1973-29.0 C (-20.2 F)
1974-26.0 C (-14.8 F)
1975-24.0 C (-11.2 F)
1976-33.0 C (-27.4 F)
1977-30.0 C (-22.0 F)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988-6.2 C (20.8 F)
1989-11.9 C (10.6 F)
1990-13.2 C (8.2 F)
1991-34.6 C (-30.3 F)
1992-29.9 C (-21.8 F)
1993-29.4 C (-20.9 F)
1994-30.5 C (-22.9 F)
1995-22.3 C (-8.1 F)
1996-25.8 C (-14.4 F)
1997-33.5 C (-28.3 F)
1998-29.6 C (-21.3 F)
1999-28.5 C (-19.3 F)
2000-28.9 C (-20.0 F)
2001-32.9 C (-27.2 F)
2002-32.3 C (-26.1 F)
2003-33.7 C (-28.7 F)
2004-31.3 C (-24.3 F)
2005-23.8 C (-10.8 F)
2006-35.8 C (-32.4 F)
2007-27.2 C (-17.0 F)
2008-25.2 C (-13.4 F)
2009-27.7 C (-17.9 F)
2010-30.0 C (-22.0 F)
2011-32.7 C (-26.9 F)
2012-29.3 C (-20.7 F)
2013-28.7 C (-19.7 F)
2014-26.3 C (-15.3 F)
2015-23.9 C (-11.0 F)
2016-27.8 C (-18.0 F)
2017-34.4 C (-29.9 F)
2018-26.9 C (-16.4 F)
2019-26.5 C (-15.7 F)
2020-14.7 C (5.5 F)
2021-28.3 C (-18.9 F)
2022-23.7 C (-10.7 F)
2023-31.3 C (-24.3 F)
2024-33.0 C (-27.4 F)
2025-19.6 C (-3.3 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Ostaskov by year The wettest day of the year at Ostaskov, 1950 to 2025. The record is 91.7 mm (3.6 in) in 1977, marked on the chart; the median year is 29.0 mm (1.1 in). 02550751001960198020002020Record: 91.7 mm (3.6 in) in 1977
The wettest day of the year at Ostaskov, 1950 to 2025. The record is 91.7 mm (3.6 in) in 1977, marked on the chart; the median year is 29.0 mm (1.1 in).
Wettest day (Rx1day) at Ostaskov by year
YearWettest day (Rx1day)
195031.0 mm (1.2 in)
195134.1 mm (1.3 in)
195237.8 mm (1.5 in)
195341.2 mm (1.6 in)
195429.5 mm (1.2 in)
195519.2 mm (0.8 in)
195623.6 mm (0.9 in)
195742.2 mm (1.7 in)
195832.7 mm (1.3 in)
195922.2 mm (0.9 in)
196061.2 mm (2.4 in)
196122.4 mm (0.9 in)
196268.7 mm (2.7 in)
196318.7 mm (0.7 in)
196416.5 mm (0.6 in)
196532.9 mm (1.3 in)
196666.3 mm (2.6 in)
196721.3 mm (0.8 in)
196817.3 mm (0.7 in)
196927.4 mm (1.1 in)
197021.1 mm (0.8 in)
197154.8 mm (2.2 in)
197227.4 mm (1.1 in)
197337.7 mm (1.5 in)
197432.3 mm (1.3 in)
197543.5 mm (1.7 in)
197628.2 mm (1.1 in)
197791.7 mm (3.6 in)
197829.0 mm (1.1 in)
197935.1 mm (1.4 in)
198024.9 mm (1.0 in)
198130.7 mm (1.2 in)
198226.0 mm (1.0 in)
198351.3 mm (2.0 in)
198428.5 mm (1.1 in)
198534.5 mm (1.4 in)
198629.2 mm (1.1 in)
198743.6 mm (1.7 in)
198840.7 mm (1.6 in)
198935.4 mm (1.4 in)
199024.1 mm (0.9 in)
199132.7 mm (1.3 in)
199226.0 mm (1.0 in)
199325.0 mm (1.0 in)
199431.4 mm (1.2 in)
199521.6 mm (0.9 in)
199624.9 mm (1.0 in)
199724.1 mm (0.9 in)
199823.1 mm (0.9 in)
199970.1 mm (2.8 in)
200042.9 mm (1.7 in)
200129.0 mm (1.1 in)
200226.2 mm (1.0 in)
200342.2 mm (1.7 in)
200426.9 mm (1.1 in)
200522.9 mm (0.9 in)
200624.1 mm (0.9 in)
200732.0 mm (1.3 in)
200836.1 mm (1.4 in)
200949.0 mm (1.9 in)
201031.8 mm (1.3 in)
201154.9 mm (2.2 in)
201235.1 mm (1.4 in)
201364.0 mm (2.5 in)
201457.4 mm (2.3 in)
201510.7 mm (0.4 in)
201618.0 mm (0.7 in)
201711.7 mm (0.5 in)
201813.0 mm (0.5 in)
201920.1 mm (0.8 in)
202022.1 mm (0.9 in)
202119.1 mm (0.8 in)
20229.9 mm (0.39 in)
202322.1 mm (0.9 in)
202420.1 mm (0.8 in)
202514.0 mm (0.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Ostaskov by year The wettest five days of the year at Ostaskov, 1950 to 2025. The record is 137.8 mm (5.4 in) in 1977, marked on the chart; the median year is 46.3 mm (1.8 in). 0501001501960198020002020Record: 137.8 mm (5.4 in) in 1977
The wettest five days of the year at Ostaskov, 1950 to 2025. The record is 137.8 mm (5.4 in) in 1977, marked on the chart; the median year is 46.3 mm (1.8 in).
Wettest five days (Rx5day) at Ostaskov by year
YearWettest five days (Rx5day)
195060.3 mm (2.4 in)
195173.4 mm (2.9 in)
195248.1 mm (1.9 in)
1953100.0 mm (3.9 in)
195466.4 mm (2.6 in)
195537.8 mm (1.5 in)
195636.5 mm (1.4 in)
195772.0 mm (2.8 in)
195836.0 mm (1.4 in)
195937.1 mm (1.5 in)
196068.0 mm (2.7 in)
196137.7 mm (1.5 in)
196298.0 mm (3.9 in)
196323.8 mm (0.9 in)
196441.6 mm (1.6 in)
196546.2 mm (1.8 in)
196684.8 mm (3.3 in)
196742.8 mm (1.7 in)
196840.3 mm (1.6 in)
196946.5 mm (1.8 in)
197032.9 mm (1.3 in)
197158.5 mm (2.3 in)
197235.5 mm (1.4 in)
197383.8 mm (3.3 in)
197447.0 mm (1.9 in)
197547.6 mm (1.9 in)
197650.6 mm (2.0 in)
1977137.8 mm (5.4 in)
197860.9 mm (2.4 in)
197946.3 mm (1.8 in)
198058.0 mm (2.3 in)
198151.4 mm (2.0 in)
198244.5 mm (1.8 in)
198378.8 mm (3.1 in)
198453.5 mm (2.1 in)
198558.8 mm (2.3 in)
198682.8 mm (3.3 in)
1987101.6 mm (4.0 in)
198876.3 mm (3.0 in)
198980.9 mm (3.2 in)
199044.2 mm (1.7 in)
199148.5 mm (1.9 in)
199250.7 mm (2.0 in)
199355.3 mm (2.2 in)
199465.0 mm (2.6 in)
199561.7 mm (2.4 in)
199644.9 mm (1.8 in)
19975.8 mm (0.23 in)
199863.4 mm (2.5 in)
1999127.6 mm (5.0 in)
200015.0 mm (0.6 in)
200152.6 mm (2.1 in)
200215.7 mm (0.6 in)
200336.1 mm (1.4 in)
200416.2 mm (0.6 in)
200542.6 mm (1.7 in)
200626.4 mm (1.0 in)
200738.3 mm (1.5 in)
200831.9 mm (1.3 in)
200915.7 mm (0.6 in)
201016.7 mm (0.7 in)
201110.5 mm (0.4 in)
201263.0 mm (2.5 in)
2013111.8 mm (4.4 in)
201452.3 mm (2.1 in)
201529.2 mm (1.1 in)
201628.6 mm (1.1 in)
201723.1 mm (0.9 in)
201819.6 mm (0.8 in)
201932.8 mm (1.3 in)
202020.8 mm (0.8 in)
202130.5 mm (1.2 in)
202225.4 mm (1.0 in)
202337.1 mm (1.5 in)
202437.7 mm (1.5 in)
202524.4 mm (1.0 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Ostaskov by year The longest dry spell of the year at Ostaskov, 1950 to 2025. The record is 33 days in 1993, marked on the chart; the median year is 17 days. 0102030401960198020002020Record: 33 days in 1993
The longest dry spell of the year at Ostaskov, 1950 to 2025. The record is 33 days in 1993, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Ostaskov by year
YearLongest dry spell (CDD)
195022 days
195127 days
195220 days
195323 days
195415 days
195519 days
195617 days
195714 days
195816 days
195910 days
196012 days
196117 days
196223 days
196327 days
196423 days
196517 days
196619 days
196718 days
196819 days
196918 days
197013 days
197119 days
197217 days
197316 days
197426 days
197520 days
197626 days
197724 days
197818 days
197918 days
198016 days
198119 days
198216 days
198315 days
198424 days
198523 days
198627 days
198721 days
198830 days
198911 days
199023 days
199115 days
199221 days
199333 days
199419 days
199513 days
199624 days
19973 days
19981 day
199920 days
20002 days
20011 day
20023 days
20033 days
20042 days
20052 days
20062 days
20072 days
20082 days
20094 days
20102 days
20113 days
201210 days
201318 days
201428 days
201517 days
201616 days
201722 days
201818 days
201916 days
202012 days
20216 days
202230 days
20238 days
202416 days
202514 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.

Rainfall Return Levels

41 years, 1950 to 1995

A day with at least 29.4 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 87.0 mm (3.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Ostaskov: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years29.4 mm (1.2 in)
5 years40.1 mm (1.6 in)
10 years48.8 mm (1.9 in)
25 years61.9 mm (2.4 in)
50 years73.6 mm (2.9 in)Longer than the 41 years of record
100 years87.0 mm (3.4 in)Longer than the 41 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, 41 years of values from 1950 to 1995.

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: 91.7 mm (3.6 in) in 1977; 68.7 mm (2.7 in) in 1962; 54.8 mm (2.2 in) in 1971.

Download the Data

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