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Truman Dam & Rsvr Weather Records (USC00238466)

Record envelope, standing records and threshold days for Truman Dam & Rsvr (USC00238466), Missouri, United States, with 47 years of record.

Key Facts for Truman Dam & Rsvr

  • Truman Dam & Rsvr (USC00238466) is a weather station in Missouri, United States at 38.26 latitude and -93.41 longitude, 230 m (754 ft) above sea level.
  • The station reports from 1980 to 2026, 47 years of record.
  • 1,464 records set at Truman Dam & Rsvr still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Truman Dam & Rsvr set a daily record high minimum temperature of 18.9 C (66.0 F) on 13 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Missouri, United States, 38.26 latitude, -93.41 longitude.
  • Elevation: 230 m (754 ft).
  • Period of record: 1980 to 2026, 47 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

31 days at or beyond a record
Daily record high and record low at Truman Dam & Rsvr, with 2026 drawn through them The band shows the record high and record low for each calendar day at Truman Dam & Rsvr. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Truman Dam & Rsvr. The lines show the 2026 daily maximum and minimum. 31 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Truman Dam & Rsvr, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan22.8 C (73.0 F)-24.4 C (-11.9 F)20.6 C (69.1 F)-20.0 C (-4.0 F)
Feb27.2 C (81.0 F)-27.2 C (-17.0 F)25.0 C (77.0 F)-14.4 C (6.1 F)
Mar33.9 C (93.0 F)-16.7 C (1.9 F)33.9 C (93.0 F)-10.6 C (12.9 F)
Apr33.3 C (91.9 F)-6.1 C (21.0 F)29.4 C (84.9 F)3.3 C (37.9 F)
May35.0 C (95.0 F)0.0 C (32.0 F)30.0 C (86.0 F)4.4 C (39.9 F)
Jun40.0 C (104.0 F)6.7 C (44.1 F)33.3 C (91.9 F)14.4 C (57.9 F)
Jul42.2 C (108.0 F)11.7 C (53.1 F)37.8 C (100.0 F)18.3 C (64.9 F)
Aug42.2 C (108.0 F)6.7 C (44.1 F)37.8 C (100.0 F)16.1 C (61.0 F)
Sep40.6 C (105.1 F)-1.7 C (28.9 F)40.0 C (104.0 F)12.8 C (55.0 F)
Oct34.4 C (93.9 F)-5.6 C (21.9 F)33.3 C (91.9 F)8.9 C (48.0 F)
Nov28.9 C (84.0 F)-15.0 C (5.0 F)n/an/a
Dec25.6 C (78.1 F)-28.9 C (-20.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Truman Dam & Rsvr by the year they were set 1,464 records at Truman Dam & Rsvr still stand. 1989 holds the most, with 66. 0204060801980: 11981: 321982: 361983: 551984: 411985: 501986: 311987: 361988: 361989: 661990: 461991: 431992: 551993: 221994: 131995: 251996: 501997: 261998: 361999: 302000: 352001: 272002: 302003: 232004: 242005: 162006: 392007: 292008: 142009: 142010: 102011: 292012: 292013: 212014: 342015: 262016: 312017: 312018: 332019: 232020: 182021: 282022: 322023: 402024: 292025: 362026: 331980198519901995200020052010201520202025
1,464 records at Truman Dam & Rsvr still stand. 1989 holds the most, with 66.
Standing records at Truman Dam & Rsvr by the year they were set
Year setStanding records
19801
198132
198236
198355
198441
198550
198631
198736
198836
198966
199046
199143
199255
199322
199413
199525
199650
199726
199836
199930
200035
200127
200230
200323
200424
200516
200639
200729
200814
200914
201010
201129
201229
201321
201434
201526
201631
201731
201833
201923
202018
202128
202232
202340
202429
202536
202633

All-Time Record Progression

1 new records
When Truman Dam & Rsvr set new all-time records 1 all-time records were set at Truman Dam & Rsvr between 18 July 2018 and 18 July 2018. Each dot is a new record. Record daily precipitation18 July 2018: Record daily precipitation 160.8 mm (6.3 in)
1 all-time records were set at Truman Dam & Rsvr between 18 July 2018 and 18 July 2018. Each dot is a new record.
When Truman Dam & Rsvr set new all-time records
DateKindDetail
2018-07-18Record daily precipitationRecord daily precipitation 160.8 mm (6.3 in)

Wettest Day of Each Month

Jul: 160.8 mm (6.3 in)
Record daily precipitation for each month at Truman Dam & Rsvr The wettest day on record for each calendar month at Truman Dam & Rsvr. The most was 160.8 mm (6.3 in) on 18 July 2018. 050100150200 Jan: 76.7 mm (3.0 in), 5 January 2005 Jan Feb: 103.4 mm (4.1 in), 21 February 1997 Feb Mar: 56.4 mm (2.2 in), 8 March 1998 Mar Apr: 149.9 mm (5.9 in), 11 April 1994 Apr May: 117.3 mm (4.6 in), 18 May 1995 May Jun: 94.0 mm (3.7 in), 25 June 1993 Jun Jul: 160.8 mm (6.3 in), 18 July 2018 Jul Aug: 124.5 mm (4.9 in), 6 August 2017 Aug Sep: 110.2 mm (4.3 in), 14 September 2008 Sep Oct: 157.7 mm (6.2 in), 3 October 1986 Oct Nov: 96.0 mm (3.8 in), 20 November 1994 Nov Dec: 48.5 mm (1.9 in), 1 December 1997 Dec
The wettest day on record for each calendar month at Truman Dam & Rsvr. The most was 160.8 mm (6.3 in) on 18 July 2018.
Record daily precipitation for each month at Truman Dam & Rsvr
MonthRecord daily precipitation (mm)Date
Jan76.7 mm (3.0 in)5 January 2005
Feb103.4 mm (4.1 in)21 February 1997
Mar56.4 mm (2.2 in)8 March 1998
Apr149.9 mm (5.9 in)11 April 1994
May117.3 mm (4.6 in)18 May 1995
Jun94.0 mm (3.7 in)25 June 1993
Jul160.8 mm (6.3 in)18 July 2018
Aug124.5 mm (4.9 in)6 August 2017
Sep110.2 mm (4.3 in)14 September 2008
Oct157.7 mm (6.2 in)3 October 1986
Nov96.0 mm (3.8 in)20 November 1994
Dec48.5 mm (1.9 in)1 December 1997

Period of Record Coverage

1980 to 2026
Days with data per year at Truman Dam & Rsvr 47 years of record at Truman Dam & Rsvr, 1980 to 2026. 18 years have data for under 90 percent of days and are left out of rankings: 1980, 1981, 1984, 2003, 2004, 2005, 2006, 2007 and others. 1980: 19 of 366 days1981: 319 of 365 days1982: 352 of 365 days1983: 329 of 365 days1984: 327 of 366 days1985: 341 of 365 days1986: 362 of 365 days1987: 365 of 365 days1988: 364 of 366 days1989: 358 of 365 days1990: 362 of 365 days1991: 363 of 365 days1992: 363 of 366 days1993: 361 of 365 days1994: 334 of 365 days1995: 355 of 365 days1996: 349 of 366 days1997: 343 of 365 days1998: 345 of 365 days1999: 345 of 365 days2000: 343 of 366 days2001: 343 of 365 days2002: 347 of 365 days2003: 327 of 365 days2004: 286 of 366 days2005: 300 of 365 days2006: 308 of 365 days2007: 297 of 365 days2008: 277 of 366 days2009: 305 of 365 days2010: 315 of 365 days2011: 226 of 365 days2012: 324 of 366 days2013: 289 of 365 days2014: 313 of 365 days2015: 314 of 365 days2016: 340 of 366 days2017: 342 of 365 days2018: 341 of 365 days2019: 318 of 365 days2020: 338 of 366 days2021: 336 of 365 days2022: 340 of 365 days2023: 363 of 365 days2024: 366 of 366 days2025: 361 of 365 days2026: 280 of 365 days19801990200020102020
47 years of record at Truman Dam & Rsvr, 1980 to 2026. 18 years have data for under 90 percent of days and are left out of rankings: 1980, 1981, 1984, 2003, 2004, 2005, 2006, 2007 and others.
Days with data per year at Truman Dam & Rsvr
YearDays with dataShare of yearComplete
1980195%No
198131987%No
198235296%Yes
198332990%Yes
198432789%No
198534193%Yes
198636299%Yes
1987365100%Yes
198836499%Yes
198935898%Yes
199036299%Yes
199136399%Yes
199236399%Yes
199336199%Yes
199433492%Yes
199535597%Yes
199634995%Yes
199734394%Yes
199834595%Yes
199934595%Yes
200034394%Yes
200134394%Yes
200234795%Yes
200332790%No
200428678%No
200530082%No
200630884%No
200729781%No
200827776%No
200930584%No
201031586%No
201122662%No
201232489%No
201328979%No
201431386%No
201531486%No
201634093%Yes
201734294%Yes
201834193%Yes
201931887%No
202033892%Yes
202133692%Yes
202234093%Yes
202336399%Yes
2024366100%Yes
202536199%Yes
202628077%No

Latest Records

20
Latest records at Truman Dam & Rsvr
DateStationRecordValueBeat old record byOld record stoodSignificance
13 October 2026Truman Dam & Rsvr, USdaily high min (Provisional)18.9 C (66.0 F)1.7 C (3.1 F)17 years12 of 100 (Routine)
13 October 2026Truman Dam & Rsvr, USdaily high max (Provisional)33.3 C (91.9 F)0.5 C (0.9 F)1 year4 of 100 (Routine)
8 October 2026Truman Dam & Rsvr, USdaily high max (Tie, Provisional)31.7 C (89.1 F)tie19 years2 of 100 (Routine)
20 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)22.2 C (72.0 F)1.6 C (2.9 F)40 years19 of 100 (Routine)
19 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)37.2 C (99.0 F)2.2 C (4.0 F)43 years20 of 100 (Routine)
19 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)22.8 C (73.0 F)0.6 C (1.1 F)43 years17 of 100 (Routine)
18 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)22.2 C (72.0 F)1.6 C (2.9 F)24 years14 of 100 (Routine)
16 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)22.2 C (72.0 F)1.6 C (2.9 F)33 years17 of 100 (Routine)
16 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)37.8 C (100.0 F)2.8 C (5.0 F)0 years9 of 100 (Routine)
15 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)36.1 C (97.0 F)1.1 C (2.0 F)8 years8 of 100 (Routine)
10 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)38.3 C (100.9 F)2.2 C (4.0 F)36 years18 of 100 (Routine)
9 September 2026Truman Dam & Rsvr, USmonthly high min (Provisional)26.7 C (80.1 F)1.1 C (2.0 F)43 years28 of 100 (Routine)
9 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)38.9 C (102.0 F)2.2 C (4.0 F)43 years20 of 100 (Routine)
7 September 2026Truman Dam & Rsvr, USdaily high max (Tie, Provisional)38.3 C (100.9 F)tie36 years3 of 100 (Routine)
7 September 2026Truman Dam & Rsvr, USdaily high min (Tie, Provisional)23.3 C (73.9 F)tie9 years1 of 100 (Routine)
6 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)40.0 C (104.0 F)2.8 C (5.0 F)36 years19 of 100 (Routine)
5 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)38.9 C (102.0 F)2.2 C (4.0 F)36 years18 of 100 (Routine)
4 September 2026Truman Dam & Rsvr, USdaily high max (Provisional)38.3 C (100.9 F)1.6 C (2.9 F)36 years17 of 100 (Routine)
4 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)24.4 C (75.9 F)2.2 C (4.0 F)24 years15 of 100 (Routine)
3 September 2026Truman Dam & Rsvr, USdaily high min (Provisional)24.4 C (75.9 F)2.2 C (4.0 F)35 years18 of 100 (Routine)

Climate Trend

23 complete years, 1982 to 2025
Annual mean temperature at Truman Dam & Rsvr as warming stripes, 1982 to 2025 One stripe for each of 23 complete years at Truman Dam & Rsvr, 1982 to 2025. Blue stripes are years cooler than the station's own mean of 13.5 C (56.2 F); red stripes are warmer. The coolest year was 1989, at 11.7 C (53.1 F), and the warmest was 2016, at 15.3 C (59.6 F). The strongest colour marks a difference of 1.9 C (3.4 F). 1982: 13.3 C, -0.2 C from the station mean1986: 13.3 C, -0.1 C from the station mean1987: 13.0 C, -0.4 C from the station mean1989: 11.7 C, -1.7 C from the station mean1990: 13.6 C, +0.2 C from the station mean1991: 13.8 C, +0.3 C from the station mean1992: 12.9 C, -0.6 C from the station mean1993: 12.1 C, -1.4 C from the station mean1995: 12.7 C, -0.8 C from the station mean1996: 12.1 C, -1.4 C from the station mean1997: 12.3 C, -1.1 C from the station mean1998: 14.3 C, +0.8 C from the station mean1999: 14.0 C, +0.6 C from the station mean2000: 13.4 C, -0.1 C from the station mean2001: 13.6 C, +0.1 C from the station mean2002: 13.4 C, 0.0 C from the station mean2016: 15.3 C, +1.9 C from the station mean2017: 14.8 C, +1.3 C from the station mean2018: 13.6 C, +0.2 C from the station mean2022: 13.4 C, -0.1 C from the station mean2023: 14.5 C, +1.0 C from the station mean2024: 14.7 C, +1.3 C from the station mean2025: 13.8 C, +0.3 C from the station mean1982198519901995200020052010201520202025
One stripe for each of 23 complete years at Truman Dam & Rsvr, 1982 to 2025. Blue stripes are years cooler than the station's own mean of 13.5 C (56.2 F); red stripes are warmer. The coolest year was 1989, at 11.7 C (53.1 F), and the warmest was 2016, at 15.3 C (59.6 F). The strongest colour marks a difference of 1.9 C (3.4 F).
Annual mean temperature at Truman Dam & Rsvr as warming stripes, 1982 to 2025
YearAnnual mean temperatureDifference from the station mean
198213.3 C-0.18 C
198613.3 C-0.11 C
198713.0 C-0.44 C
198911.7 C-1.73 C
199013.6 C+0.16 C
199113.8 C+0.35 C
199212.9 C-0.59 C
199312.1 C-1.38 C
199512.7 C-0.77 C
199612.1 C-1.39 C
199712.3 C-1.13 C
199814.3 C+0.81 C
199914.0 C+0.59 C
200013.4 C-0.05 C
200113.6 C+0.11 C
200213.4 C-0.01 C
201615.3 C+1.86 C
201714.8 C+1.31 C
201813.6 C+0.17 C
202213.4 C-0.09 C
202314.5 C+1.00 C
202414.7 C+1.28 C
202513.8 C+0.34 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1980 to 2026
Yearly extremes at Truman Dam & Rsvr: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)42.2 C (108.0 F)198637.8 C (100.0 F)47
Coldest night (TNn)-28.9 C (-20.0 F)1989-17.2 C (1.0 F)47
Wettest day (Rx1day)160.8 mm (6.3 in)201877.7 mm (3.1 in)47
Wettest five days (Rx5day)356.1 mm (14.0 in)1986122.4 mm (4.8 in)47
Longest dry spell (CDD)45 days198922 days47

Hottest day (TXx)

Hottest day (TXx) at Truman Dam & Rsvr by year The hottest day of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 42.2 C (108.0 F) in 1986, marked on the chart; the median year is 37.8 C (100.0 F). 102030405019801990200020102020Record: 42.2 C (108.0 F) in 1986
The hottest day of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 42.2 C (108.0 F) in 1986, marked on the chart; the median year is 37.8 C (100.0 F).
Hottest day (TXx) at Truman Dam & Rsvr by year
YearHottest day (TXx)
198016.1 C (61.0 F)
198136.1 C (97.0 F)
198240.0 C (104.0 F)
198341.1 C (106.0 F)
198440.6 C (105.1 F)
198537.2 C (99.0 F)
198642.2 C (108.0 F)
198739.4 C (102.9 F)
198840.0 C (104.0 F)
198936.1 C (97.0 F)
199038.3 C (100.9 F)
199139.4 C (102.9 F)
199234.4 C (93.9 F)
199336.7 C (98.1 F)
199436.7 C (98.1 F)
199537.2 C (99.0 F)
199635.0 C (95.0 F)
199737.8 C (100.0 F)
199837.8 C (100.0 F)
199940.0 C (104.0 F)
200040.6 C (105.1 F)
200136.1 C (97.0 F)
200237.2 C (99.0 F)
200340.6 C (105.1 F)
200435.0 C (95.0 F)
200540.0 C (104.0 F)
200640.6 C (105.1 F)
200739.4 C (102.9 F)
200837.8 C (100.0 F)
200935.6 C (96.1 F)
201037.2 C (99.0 F)
201142.2 C (108.0 F)
201240.6 C (105.1 F)
201337.8 C (100.0 F)
201438.3 C (100.9 F)
201537.8 C (100.0 F)
201637.2 C (99.0 F)
201738.3 C (100.9 F)
201838.3 C (100.9 F)
201935.6 C (96.1 F)
202035.6 C (96.1 F)
202136.1 C (97.0 F)
202238.3 C (100.9 F)
202339.4 C (102.9 F)
202438.3 C (100.9 F)
202537.8 C (100.0 F)
202640.0 C (104.0 F)

Coldest night (TNn)

Coldest night (TNn) at Truman Dam & Rsvr by year The coldest night of the year at Truman Dam & Rsvr, 1980 to 2026. The record is -28.9 C (-20.0 F) in 1989, marked on the chart; the median year is -17.2 C (1.0 F). -30-25-20-15-1019801990200020102020Record: -28.9 C (-20.0 F) in 1989
The coldest night of the year at Truman Dam & Rsvr, 1980 to 2026. The record is -28.9 C (-20.0 F) in 1989, marked on the chart; the median year is -17.2 C (1.0 F).
Coldest night (TNn) at Truman Dam & Rsvr by year
YearColdest night (TNn)
1980-17.8 C (0.0 F)
1981-23.3 C (-9.9 F)
1982-24.4 C (-11.9 F)
1983-25.6 C (-14.1 F)
1984-24.4 C (-11.9 F)
1985-24.4 C (-11.9 F)
1986-16.7 C (1.9 F)
1987-15.6 C (3.9 F)
1988-23.3 C (-9.9 F)
1989-28.9 C (-20.0 F)
1990-17.2 C (1.0 F)
1991-15.6 C (3.9 F)
1992-11.7 C (10.9 F)
1993-16.7 C (1.9 F)
1994-16.7 C (1.9 F)
1995-16.7 C (1.9 F)
1996-23.9 C (-11.0 F)
1997-18.9 C (-2.0 F)
1998-15.0 C (5.0 F)
1999-17.2 C (1.0 F)
2000-17.2 C (1.0 F)
2001-22.2 C (-8.0 F)
2002-16.1 C (3.0 F)
2003-18.3 C (-0.9 F)
2004-16.1 C (3.0 F)
2005-14.4 C (6.1 F)
2006-15.0 C (5.0 F)
2007-13.3 C (8.1 F)
2008-16.1 C (3.0 F)
2009-16.7 C (1.9 F)
2010-22.2 C (-8.0 F)
2011-27.2 C (-17.0 F)
2012-11.7 C (10.9 F)
2013-13.9 C (7.0 F)
2014-19.4 C (-2.9 F)
2015-15.6 C (3.9 F)
2016-16.7 C (1.9 F)
2017-17.2 C (1.0 F)
2018-21.1 C (-6.0 F)
2019-16.7 C (1.9 F)
2020-13.9 C (7.0 F)
2021-21.7 C (-7.1 F)
2022-19.4 C (-2.9 F)
2023-10.6 C (12.9 F)
2024-21.7 C (-7.1 F)
2025-20.0 C (-4.0 F)
2026-20.0 C (-4.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Truman Dam & Rsvr by year The wettest day of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 160.8 mm (6.3 in) in 2018, marked on the chart; the median year is 77.7 mm (3.1 in). 05010015020019801990200020102020Record: 160.8 mm (6.3 in) in 2018
The wettest day of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 160.8 mm (6.3 in) in 2018, marked on the chart; the median year is 77.7 mm (3.1 in).
Wettest day (Rx1day) at Truman Dam & Rsvr by year
YearWettest day (Rx1day)
198033.0 mm (1.3 in)
198166.5 mm (2.6 in)
1982100.3 mm (3.9 in)
198342.7 mm (1.7 in)
1984101.6 mm (4.0 in)
198554.6 mm (2.1 in)
1986157.7 mm (6.2 in)
198740.6 mm (1.6 in)
198891.7 mm (3.6 in)
198997.8 mm (3.9 in)
199054.6 mm (2.1 in)
199157.4 mm (2.3 in)
199250.3 mm (2.0 in)
199394.0 mm (3.7 in)
1994149.9 mm (5.9 in)
1995117.3 mm (4.6 in)
199676.2 mm (3.0 in)
1997103.4 mm (4.1 in)
199866.5 mm (2.6 in)
199989.4 mm (3.5 in)
200051.6 mm (2.0 in)
200187.1 mm (3.4 in)
200270.6 mm (2.8 in)
200382.8 mm (3.3 in)
200465.0 mm (2.6 in)
2005115.6 mm (4.6 in)
200659.2 mm (2.3 in)
200787.1 mm (3.4 in)
2008110.2 mm (4.3 in)
200987.9 mm (3.5 in)
201059.2 mm (2.3 in)
201148.3 mm (1.9 in)
201277.5 mm (3.1 in)
201357.4 mm (2.3 in)
201473.7 mm (2.9 in)
2015124.5 mm (4.9 in)
201687.6 mm (3.4 in)
2017124.5 mm (4.9 in)
2018160.8 mm (6.3 in)
2019102.1 mm (4.0 in)
202071.1 mm (2.8 in)
202171.6 mm (2.8 in)
202297.5 mm (3.8 in)
202346.0 mm (1.8 in)
202473.2 mm (2.9 in)
202577.7 mm (3.1 in)
2026102.6 mm (4.0 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Truman Dam & Rsvr by year The wettest five days of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 356.1 mm (14.0 in) in 1986, marked on the chart; the median year is 122.4 mm (4.8 in). 010020030040019801990200020102020Record: 356.1 mm (14.0 in) in 1986
The wettest five days of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 356.1 mm (14.0 in) in 1986, marked on the chart; the median year is 122.4 mm (4.8 in).
Wettest five days (Rx5day) at Truman Dam & Rsvr by year
YearWettest five days (Rx5day)
198037.4 mm (1.5 in)
1981120.0 mm (4.7 in)
1982120.1 mm (4.7 in)
198392.7 mm (3.6 in)
1984126.6 mm (5.0 in)
1985113.6 mm (4.5 in)
1986356.1 mm (14.0 in)
198769.6 mm (2.7 in)
1988133.6 mm (5.3 in)
1989169.9 mm (6.7 in)
1990122.7 mm (4.8 in)
199173.6 mm (2.9 in)
1992115.0 mm (4.5 in)
1993133.1 mm (5.2 in)
1994244.5 mm (9.6 in)
1995244.2 mm (9.6 in)
1996122.4 mm (4.8 in)
1997108.5 mm (4.3 in)
1998124.7 mm (4.9 in)
1999114.0 mm (4.5 in)
200099.6 mm (3.9 in)
2001122.7 mm (4.8 in)
2002125.0 mm (4.9 in)
2003136.2 mm (5.4 in)
200484.5 mm (3.3 in)
2005148.1 mm (5.8 in)
200683.1 mm (3.3 in)
2007245.3 mm (9.7 in)
2008142.1 mm (5.6 in)
2009127.0 mm (5.0 in)
2010114.9 mm (4.5 in)
201144.5 mm (1.8 in)
201294.3 mm (3.7 in)
201379.6 mm (3.1 in)
201483.9 mm (3.3 in)
2015218.5 mm (8.6 in)
2016122.9 mm (4.8 in)
2017161.3 mm (6.4 in)
2018213.9 mm (8.4 in)
2019125.2 mm (4.9 in)
2020108.7 mm (4.3 in)
202193.5 mm (3.7 in)
2022112.4 mm (4.4 in)
2023100.4 mm (4.0 in)
2024151.2 mm (6.0 in)
2025105.6 mm (4.2 in)
2026133.4 mm (5.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Truman Dam & Rsvr by year The longest dry spell of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 45 days in 1989, marked on the chart; the median year is 22 days. 0102030405019801990200020102020Record: 45 days in 1989
The longest dry spell of the year at Truman Dam & Rsvr, 1980 to 2026. The record is 45 days in 1989, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Truman Dam & Rsvr by year
YearLongest dry spell (CDD)
198022 days
198127 days
198219 days
198326 days
198422 days
198521 days
198625 days
198717 days
198823 days
198945 days
199021 days
199120 days
199221 days
199321 days
199423 days
199531 days
199625 days
199716 days
199823 days
199921 days
200018 days
200116 days
200227 days
200316 days
200424 days
200520 days
200634 days
200737 days
200830 days
200927 days
201029 days
20115 days
201215 days
201327 days
201429 days
201520 days
201618 days
201734 days
201818 days
201915 days
202020 days
202123 days
202221 days
202320 days
202430 days
202529 days
202621 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

23 years with a frost

Across 23 years with a frost, the median last spring frost at Truman Dam & Rsvr falls on 12 April and the median first autumn frost on 21 October, which leaves a median of 191 days between them.

Frost dates and growing season at Truman Dam & Rsvr
MeasureMedian, all yearsEarliest periodRecent period (1982 to 2025)Recent against earliestFitted trend
Last spring frost12 Apriln/a12 Apriln/an/a
First autumn frost21 Octobern/a21 Octobern/an/a
Growing days191 daysn/a191 daysn/an/a

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

37 years, 1981 to 2025

A day with at least 81.4 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 181.7 mm (7.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Truman Dam & Rsvr: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years81.4 mm (3.2 in)
5 years108.6 mm (4.3 in)
10 years126.5 mm (5.0 in)
25 years148.9 mm (5.9 in)
50 years165.4 mm (6.5 in)Longer than the 37 years of record
100 years181.7 mm (7.2 in)Longer than the 37 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, 37 years of values from 1981 to 2025.

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: 160.8 mm (6.3 in) in 2018; 157.7 mm (6.2 in) in 1986; 149.9 mm (5.9 in) in 1994.

Download the Data

  • Data for Truman Dam & Rsvr standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Truman Dam & Rsvr 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 . Last revised (2026-10-15).