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Marseilles Lock/Dam Weather Records (USC00115372)

Record envelope, standing records and threshold days for Marseilles Lock/Dam (USC00115372), Illinois, United States, with 86 years of record.

Key Facts for Marseilles Lock/Dam

  • Marseilles Lock/Dam (USC00115372) is a weather station in Illinois, United States at 41.33 latitude and -88.75 longitude, 148 m (487 ft) above sea level.
  • The station reports from 1941 to 2026, 86 years of record.
  • 1,464 records set at Marseilles Lock/Dam still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Marseilles Lock/Dam set a daily record precipitation of 33.0 mm (1.3 in) on 2 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Illinois, United States, 41.33 latitude, -88.75 longitude.
  • Elevation: 148 m (487 ft).
  • Period of record: 1941 to 2026, 86 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

19 days at or beyond a record
Daily record high and record low at Marseilles Lock/Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Marseilles Lock/Dam. The lines show the 2026 daily maximum and minimum. 19 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 Marseilles Lock/Dam. The lines show the 2026 daily maximum and minimum. 19 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Marseilles Lock/Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.3 C (64.9 F)-32.8 C (-27.0 F)16.1 C (61.0 F)-22.2 C (-8.0 F)
Feb22.8 C (73.0 F)-27.8 C (-18.0 F)20.0 C (68.0 F)-15.6 C (3.9 F)
Mar28.3 C (82.9 F)-21.7 C (-7.1 F)27.8 C (82.0 F)-10.6 C (12.9 F)
Apr32.2 C (90.0 F)-9.4 C (15.1 F)29.4 C (84.9 F)0.6 C (33.1 F)
May35.6 C (96.1 F)-3.3 C (26.1 F)31.7 C (89.1 F)1.7 C (35.1 F)
Jun36.7 C (98.1 F)3.3 C (37.9 F)32.2 C (90.0 F)10.6 C (51.1 F)
Jul38.9 C (102.0 F)7.2 C (45.0 F)35.0 C (95.0 F)12.8 C (55.0 F)
Aug36.7 C (98.1 F)7.2 C (45.0 F)32.2 C (90.0 F)10.6 C (51.1 F)
Sep36.1 C (97.0 F)-0.6 C (30.9 F)34.4 C (93.9 F)7.2 C (45.0 F)
Oct32.2 C (90.0 F)-5.6 C (21.9 F)27.2 C (81.0 F)5.0 C (41.0 F)
Nov26.1 C (79.0 F)-17.8 C (0.0 F)n/an/a
Dec21.7 C (71.1 F)-26.7 C (-16.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Marseilles Lock/Dam by the year they were set 1,464 records at Marseilles Lock/Dam still stand. 2000 holds the most, with 81. 02550751001949: 41967: 11971: 11976: 221977: 531997: 561998: 451999: 462000: 812001: 502002: 632003: 462004: 382005: 492006: 512007: 462008: 342009: 402010: 412011: 382012: 762013: 452014: 532015: 482016: 282017: 652018: 542019: 332020: 292021: 322022: 382023: 392024: 442025: 382026: 37194919772000200420082012201620202024
1,464 records at Marseilles Lock/Dam still stand. 2000 holds the most, with 81.
Standing records at Marseilles Lock/Dam by the year they were set
Year setStanding records
19494
19671
19711
197622
197753
199756
199845
199946
200081
200150
200263
200346
200438
200549
200651
200746
200834
200940
201041
201138
201276
201345
201453
201548
201628
201765
201854
201933
202029
202132
202238
202339
202444
202538
202637

All-Time Record Progression

3 new records
When Marseilles Lock/Dam set new all-time records 3 all-time records were set at Marseilles Lock/Dam between 14 January 1979 and 17 January 1979. Each dot is a new record. Record snow depth14 January 1979: Record snow depth 71.1 cm (28.0 in)16 January 1979: Record snow depth 73.7 cm (29.0 in)17 January 1979: Record snow depth 78.7 cm (31.0 in)1980
3 all-time records were set at Marseilles Lock/Dam between 14 January 1979 and 17 January 1979. Each dot is a new record.
When Marseilles Lock/Dam set new all-time records
DateKindDetail
1979-01-14Record snow depthRecord snow depth 71.1 cm (28.0 in)
1979-01-16Record snow depthRecord snow depth 73.7 cm (29.0 in)
1979-01-17Record snow depthRecord snow depth 78.7 cm (31.0 in)

Wettest Day of Each Month

Jul: 172.7 mm (6.8 in)
Record daily precipitation for each month at Marseilles Lock/Dam The wettest day on record for each calendar month at Marseilles Lock/Dam. The most was 172.7 mm (6.8 in) on 14 July 1958. 050100150200 Jan: 73.9 mm (2.9 in), 11 January 2020 Jan Feb: 63.5 mm (2.5 in), 21 February 1997 Feb Mar: 77.2 mm (3.0 in), 25 March 1954 Mar Apr: 105.7 mm (4.2 in), 18 April 2013 Apr May: 112.5 mm (4.4 in), 7 May 2012 May Jun: 88.4 mm (3.5 in), 14 June 2015 Jun Jul: 172.7 mm (6.8 in), 14 July 1958 Jul Aug: 152.4 mm (6.0 in), 24 August 2007 Aug Sep: 141.0 mm (5.6 in), 28 September 2019 Sep Oct: 92.5 mm (3.6 in), 3 October 1941 Oct Nov: 66.5 mm (2.6 in), 28 November 1990 Nov Dec: 99.8 mm (3.9 in), 3 December 1982 Dec
The wettest day on record for each calendar month at Marseilles Lock/Dam. The most was 172.7 mm (6.8 in) on 14 July 1958.
Record daily precipitation for each month at Marseilles Lock/Dam
MonthRecord daily precipitation (mm)Date
Jan73.9 mm (2.9 in)11 January 2020
Feb63.5 mm (2.5 in)21 February 1997
Mar77.2 mm (3.0 in)25 March 1954
Apr105.7 mm (4.2 in)18 April 2013
May112.5 mm (4.4 in)7 May 2012
Jun88.4 mm (3.5 in)14 June 2015
Jul172.7 mm (6.8 in)14 July 1958
Aug152.4 mm (6.0 in)24 August 2007
Sep141.0 mm (5.6 in)28 September 2019
Oct92.5 mm (3.6 in)3 October 1941
Nov66.5 mm (2.6 in)28 November 1990
Dec99.8 mm (3.9 in)3 December 1982

Period of Record Coverage

1949 to 2026
Days with data per year at Marseilles Lock/Dam 35 years of record at Marseilles Lock/Dam, 1949 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1949, 1967, 1971, 1976, 1977, 1997, 2015, 2021 and others. 1949: 31 of 365 days1967: 27 of 365 days1971: 10 of 365 days1976: 60 of 366 days1977: 212 of 365 days1997: 305 of 365 days1998: 363 of 365 days1999: 364 of 365 days2000: 365 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 363 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 359 of 366 days2013: 363 of 365 days2014: 364 of 365 days2015: 311 of 365 days2016: 364 of 366 days2017: 362 of 365 days2018: 349 of 365 days2019: 340 of 365 days2020: 345 of 366 days2021: 275 of 365 days2022: 340 of 365 days2023: 365 of 365 days2024: 364 of 366 days2025: 363 of 365 days2026: 273 of 365 days200020052010201520202025
35 years of record at Marseilles Lock/Dam, 1949 to 2026. 9 years have data for under 90 percent of days and are left out of rankings: 1949, 1967, 1971, 1976, 1977, 1997, 2015, 2021 and others.
Days with data per year at Marseilles Lock/Dam
YearDays with dataShare of yearComplete
1949318%No
1967277%No
1971103%No
19766016%No
197721258%No
199730584%No
199836399%Yes
1999364100%Yes
2000365100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
200736399%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
201235998%Yes
201336399%Yes
2014364100%Yes
201531185%No
201636499%Yes
201736299%Yes
201834996%Yes
201934093%Yes
202034594%Yes
202127575%No
202234093%Yes
2023365100%Yes
202436499%Yes
202536399%Yes
202627375%No

Latest Records

20
Latest records at Marseilles Lock/Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
2 October 2026Marseilles Lock/Dam, USdaily rain (Provisional)33.0 mm (1.3 in)8.1 mm (0.32 in)47 years29 of 100 (Routine)
20 September 2026Marseilles Lock/Dam, USdaily rain (Provisional)47.0 mm (1.9 in)5.9 mm (0.23 in)40 years23 of 100 (Routine)
16 September 2026Marseilles Lock/Dam, USdaily high min (Provisional)17.2 C (63.0 F)0.5 C (0.9 F)21 years14 of 100 (Routine)
5 September 2026Marseilles Lock/Dam, USdaily high min (Provisional)21.7 C (71.1 F)0.6 C (1.1 F)12 years11 of 100 (Routine)
5 September 2026Marseilles Lock/Dam, USdaily high max (Tie, Provisional)33.9 C (93.0 F)tie27 years3 of 100 (Routine)
4 September 2026Marseilles Lock/Dam, USdaily high max (Provisional)34.4 C (93.9 F)1.1 C (2.0 F)25 years16 of 100 (Routine)
4 September 2026Marseilles Lock/Dam, USdaily high min (Provisional)21.7 C (71.1 F)1.1 C (2.0 F)13 years13 of 100 (Routine)
2 September 2026Marseilles Lock/Dam, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie15 years2 of 100 (Routine)
1 September 2026Marseilles Lock/Dam, USdaily high min (Provisional)21.7 C (71.1 F)1.1 C (2.0 F)12 years12 of 100 (Routine)
16 August 2026Marseilles Lock/Dam, USdaily high min (Provisional)21.1 C (70.0 F)0.5 C (0.9 F)28 years16 of 100 (Routine)
15 August 2026Marseilles Lock/Dam, USdaily high min21.1 C (70.0 F)0.5 C (0.9 F)16 years12 of 100 (Routine)
13 August 2026Marseilles Lock/Dam, USdaily high min22.8 C (73.0 F)0.6 C (1.1 F)9 years10 of 100 (Routine)
12 August 2026Marseilles Lock/Dam, USdaily high min23.3 C (73.9 F)1.1 C (2.0 F)9 years12 of 100 (Routine)
11 August 2026Marseilles Lock/Dam, USdaily high min (Tie)22.2 C (72.0 F)tie0 years1 of 100 (Routine)
7 August 2026Marseilles Lock/Dam, USdaily high min (Tie)22.2 C (72.0 F)tie19 years3 of 100 (Routine)
2 August 2026Marseilles Lock/Dam, USdaily low max23.9 C (75.0 F)1.1 C (2.0 F)5 years11 of 100 (Routine)
1 August 2026Marseilles Lock/Dam, USdaily rain39.4 mm (1.6 in)6.4 mm (0.25 in)84 years37 of 100 (Notable)
26 July 2026Marseilles Lock/Dam, USdaily low max23.9 C (75.0 F)0.5 C (0.9 F)21 years14 of 100 (Routine)
23 July 2026Marseilles Lock/Dam, USdaily low max22.2 C (72.0 F)0.6 C (1.1 F)28 years16 of 100 (Routine)
17 July 2026Marseilles Lock/Dam, USdaily high min22.2 C (72.0 F)0.5 C (0.9 F)20 years14 of 100 (Routine)

Climate Trend

26 complete years, 1998 to 2025
Annual mean temperature at Marseilles Lock/Dam as warming stripes, 1998 to 2025 One stripe for each of 26 complete years at Marseilles Lock/Dam, 1998 to 2025. Blue stripes are years cooler than the station's own mean of 10.0 C (50.0 F); red stripes are warmer. The coolest year was 2014, at 8.0 C (46.3 F), and the warmest was 2024, at 11.6 C (53.0 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1998: 11.5 C, +1.5 C from the station mean1999: 10.2 C, +0.2 C from the station mean2000: 9.6 C, -0.4 C from the station mean2001: 10.3 C, +0.3 C from the station mean2002: 10.0 C, 0.0 C from the station mean2003: 9.2 C, -0.8 C from the station mean2004: 9.8 C, -0.2 C from the station mean2005: 10.4 C, +0.4 C from the station mean2006: 10.5 C, +0.5 C from the station mean2007: 10.0 C, 0.0 C from the station mean2008: 8.6 C, -1.4 C from the station mean2009: 8.7 C, -1.3 C from the station mean2010: 9.7 C, -0.3 C from the station mean2011: 9.7 C, -0.3 C from the station mean2012: 11.5 C, +1.4 C from the station mean2013: 8.8 C, -1.2 C from the station mean2014: 8.0 C, -2.1 C from the station mean2016: 11.0 C, +1.0 C from the station mean2017: 10.4 C, +0.4 C from the station mean2018: 9.5 C, -0.5 C from the station mean2019: 9.4 C, -0.6 C from the station mean2020: 10.8 C, +0.8 C from the station mean2022: 9.7 C, -0.3 C from the station mean2023: 10.8 C, +0.8 C from the station mean2024: 11.6 C, +1.6 C from the station mean2025: 10.7 C, +0.7 C from the station mean1998200020052010201520202025
One stripe for each of 26 complete years at Marseilles Lock/Dam, 1998 to 2025. Blue stripes are years cooler than the station's own mean of 10.0 C (50.0 F); red stripes are warmer. The coolest year was 2014, at 8.0 C (46.3 F), and the warmest was 2024, at 11.6 C (53.0 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Marseilles Lock/Dam as warming stripes, 1998 to 2025
YearAnnual mean temperatureDifference from the station mean
199811.5 C+1.47 C
199910.2 C+0.20 C
20009.6 C-0.44 C
200110.3 C+0.33 C
200210.0 C+0.01 C
20039.2 C-0.80 C
20049.8 C-0.21 C
200510.4 C+0.38 C
200610.5 C+0.47 C
200710.0 C-0.03 C
20088.6 C-1.39 C
20098.7 C-1.30 C
20109.7 C-0.30 C
20119.7 C-0.28 C
201211.5 C+1.44 C
20138.8 C-1.24 C
20148.0 C-2.06 C
201611.0 C+1.02 C
201710.4 C+0.37 C
20189.5 C-0.53 C
20199.4 C-0.58 C
202010.8 C+0.79 C
20229.7 C-0.30 C
202310.8 C+0.76 C
202411.6 C+1.63 C
202510.7 C+0.71 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

1941 to 2026
Yearly extremes at Marseilles Lock/Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)200535.0 C (95.0 F)35
Coldest night (TNn)-32.8 C (-27.0 F)1999-23.3 C (-10.0 F)34
Wettest day (Rx1day)172.7 mm (6.8 in)195863.5 mm (2.5 in)86
Wettest five days (Rx5day)279.4 mm (11.0 in)200796.2 mm (3.8 in)86
Longest dry spell (CDD)41 days196921 days86

Hottest day (TXx)

Hottest day (TXx) at Marseilles Lock/Dam by year The hottest day of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 38.9 C (102.0 F) in 2005, marked on the chart; the median year is 35.0 C (95.0 F). 0102030401960198020002020Record: 38.9 C (102.0 F) in 2005
The hottest day of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 38.9 C (102.0 F) in 2005, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Marseilles Lock/Dam by year
YearHottest day (TXx)
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
194916.1 C (61.0 F)
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
196710.0 C (50.0 F)
1968n/a
1969n/a
1970n/a
19717.2 C (45.0 F)
1972n/a
1973n/a
1974n/a
1975n/a
197617.2 C (63.0 F)
197736.7 C (98.1 F)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
199735.6 C (96.1 F)
199834.4 C (93.9 F)
199937.2 C (99.0 F)
200036.1 C (97.0 F)
200133.9 C (93.0 F)
200235.6 C (96.1 F)
200335.0 C (95.0 F)
200432.8 C (91.0 F)
200538.9 C (102.0 F)
200636.7 C (98.1 F)
200736.1 C (97.0 F)
200832.8 C (91.0 F)
200934.4 C (93.9 F)
201033.9 C (93.0 F)
201135.6 C (96.1 F)
201238.9 C (102.0 F)
201333.9 C (93.0 F)
201432.8 C (91.0 F)
201532.8 C (91.0 F)
201633.3 C (91.9 F)
201735.0 C (95.0 F)
201835.6 C (96.1 F)
201933.9 C (93.0 F)
202035.6 C (96.1 F)
202133.9 C (93.0 F)
202235.6 C (96.1 F)
202336.1 C (97.0 F)
202435.0 C (95.0 F)
202534.4 C (93.9 F)
202635.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at Marseilles Lock/Dam by year The coldest night of the year at Marseilles Lock/Dam, 1941 to 2026. The record is -32.8 C (-27.0 F) in 1999, marked on the chart; the median year is -23.3 C (-10.0 F). -40-30-20-101960198020002020Record: -32.8 C (-27.0 F) in 1999
The coldest night of the year at Marseilles Lock/Dam, 1941 to 2026. The record is -32.8 C (-27.0 F) in 1999, marked on the chart; the median year is -23.3 C (-10.0 F).
Coldest night (TNn) at Marseilles Lock/Dam by year
YearColdest night (TNn)
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949-20.0 C (-4.0 F)
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
1955n/a
1956n/a
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971-21.1 C (-6.0 F)
1972n/a
1973n/a
1974n/a
1975n/a
1976-25.0 C (-13.0 F)
1977-29.4 C (-20.9 F)
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997-11.1 C (12.0 F)
1998-17.8 C (0.0 F)
1999-32.8 C (-27.0 F)
2000-26.7 C (-16.1 F)
2001-22.8 C (-9.0 F)
2002-21.7 C (-7.1 F)
2003-25.0 C (-13.0 F)
2004-22.8 C (-9.0 F)
2005-21.7 C (-7.1 F)
2006-21.1 C (-6.0 F)
2007-22.2 C (-8.0 F)
2008-24.4 C (-11.9 F)
2009-31.1 C (-24.0 F)
2010-25.0 C (-13.0 F)
2011-27.8 C (-18.0 F)
2012-17.2 C (1.0 F)
2013-21.7 C (-7.1 F)
2014-27.2 C (-17.0 F)
2015-25.0 C (-13.0 F)
2016-25.0 C (-13.0 F)
2017-23.9 C (-11.0 F)
2018-28.3 C (-18.9 F)
2019-30.0 C (-22.0 F)
2020-20.0 C (-4.0 F)
2021-24.4 C (-11.9 F)
2022-22.2 C (-8.0 F)
2023-18.9 C (-2.0 F)
2024-24.4 C (-11.9 F)
2025-21.7 C (-7.1 F)
2026-22.2 C (-8.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Marseilles Lock/Dam by year The wettest day of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 172.7 mm (6.8 in) in 1958, marked on the chart; the median year is 63.5 mm (2.5 in). 0501001502001960198020002020Record: 172.7 mm (6.8 in) in 1958
The wettest day of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 172.7 mm (6.8 in) in 1958, marked on the chart; the median year is 63.5 mm (2.5 in).
Wettest day (Rx1day) at Marseilles Lock/Dam by year
YearWettest day (Rx1day)
194194.0 mm (3.7 in)
194291.4 mm (3.6 in)
194352.8 mm (2.1 in)
194458.7 mm (2.3 in)
194550.0 mm (2.0 in)
194646.2 mm (1.8 in)
194753.8 mm (2.1 in)
194865.3 mm (2.6 in)
1949132.8 mm (5.2 in)
195076.7 mm (3.0 in)
195156.1 mm (2.2 in)
195267.6 mm (2.7 in)
195343.2 mm (1.7 in)
195477.2 mm (3.0 in)
195557.9 mm (2.3 in)
195667.1 mm (2.6 in)
195771.1 mm (2.8 in)
1958172.7 mm (6.8 in)
195938.6 mm (1.5 in)
196057.4 mm (2.3 in)
196173.7 mm (2.9 in)
196234.0 mm (1.3 in)
196350.0 mm (2.0 in)
196450.8 mm (2.0 in)
196559.7 mm (2.4 in)
196679.8 mm (3.1 in)
196746.2 mm (1.8 in)
196863.5 mm (2.5 in)
196944.7 mm (1.8 in)
197056.9 mm (2.2 in)
197135.8 mm (1.4 in)
197263.5 mm (2.5 in)
197372.4 mm (2.9 in)
197456.1 mm (2.2 in)
197564.5 mm (2.5 in)
197642.2 mm (1.7 in)
1977121.7 mm (4.8 in)
197879.0 mm (3.1 in)
197988.9 mm (3.5 in)
198069.9 mm (2.8 in)
198175.4 mm (3.0 in)
198299.8 mm (3.9 in)
198355.1 mm (2.2 in)
198457.2 mm (2.3 in)
198572.1 mm (2.8 in)
198686.9 mm (3.4 in)
198777.5 mm (3.1 in)
198845.0 mm (1.8 in)
198995.3 mm (3.8 in)
199087.4 mm (3.4 in)
199169.9 mm (2.8 in)
199292.2 mm (3.6 in)
199367.3 mm (2.6 in)
199470.6 mm (2.8 in)
199549.0 mm (1.9 in)
199657.2 mm (2.3 in)
199763.5 mm (2.5 in)
199850.0 mm (2.0 in)
199957.2 mm (2.3 in)
200064.5 mm (2.5 in)
200173.2 mm (2.9 in)
200271.1 mm (2.8 in)
200338.4 mm (1.5 in)
200457.7 mm (2.3 in)
200542.2 mm (1.7 in)
200654.9 mm (2.2 in)
2007152.4 mm (6.0 in)
200862.5 mm (2.5 in)
200957.2 mm (2.3 in)
201037.3 mm (1.5 in)
201161.0 mm (2.4 in)
2012112.5 mm (4.4 in)
2013105.7 mm (4.2 in)
2014104.6 mm (4.1 in)
201588.4 mm (3.5 in)
201666.3 mm (2.6 in)
201781.3 mm (3.2 in)
201843.7 mm (1.7 in)
2019141.0 mm (5.6 in)
202073.9 mm (2.9 in)
202155.9 mm (2.2 in)
202238.1 mm (1.5 in)
202350.3 mm (2.0 in)
202453.3 mm (2.1 in)
202538.1 mm (1.5 in)
202647.0 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Marseilles Lock/Dam by year The wettest five days of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 279.4 mm (11.0 in) in 2007, marked on the chart; the median year is 96.2 mm (3.8 in). 01002003001960198020002020Record: 279.4 mm (11.0 in) in 2007
The wettest five days of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 279.4 mm (11.0 in) in 2007, marked on the chart; the median year is 96.2 mm (3.8 in).
Wettest five days (Rx5day) at Marseilles Lock/Dam by year
YearWettest five days (Rx5day)
1941195.3 mm (7.7 in)
194293.2 mm (3.7 in)
194375.5 mm (3.0 in)
194485.1 mm (3.4 in)
194576.7 mm (3.0 in)
194667.9 mm (2.7 in)
194772.6 mm (2.9 in)
194858.3 mm (2.3 in)
1949143.0 mm (5.6 in)
1950129.5 mm (5.1 in)
195188.1 mm (3.5 in)
195285.9 mm (3.4 in)
195373.7 mm (2.9 in)
195495.2 mm (3.7 in)
195567.3 mm (2.6 in)
195696.6 mm (3.8 in)
195783.1 mm (3.3 in)
1958200.1 mm (7.9 in)
195976.0 mm (3.0 in)
196072.1 mm (2.8 in)
1961135.7 mm (5.3 in)
196268.0 mm (2.7 in)
196369.8 mm (2.7 in)
196471.9 mm (2.8 in)
1965121.9 mm (4.8 in)
1966117.9 mm (4.6 in)
196775.8 mm (3.0 in)
196898.3 mm (3.9 in)
196974.7 mm (2.9 in)
1970114.3 mm (4.5 in)
197152.2 mm (2.1 in)
197295.8 mm (3.8 in)
197378.8 mm (3.1 in)
1974104.4 mm (4.1 in)
1975100.9 mm (4.0 in)
197699.1 mm (3.9 in)
1977134.4 mm (5.3 in)
1978112.2 mm (4.4 in)
1979146.8 mm (5.8 in)
1980127.0 mm (5.0 in)
1981117.6 mm (4.6 in)
1982117.9 mm (4.6 in)
198386.4 mm (3.4 in)
198487.4 mm (3.4 in)
198591.5 mm (3.6 in)
1986161.1 mm (6.3 in)
1987106.2 mm (4.2 in)
198855.2 mm (2.2 in)
1989168.9 mm (6.6 in)
1990119.3 mm (4.7 in)
1991110.2 mm (4.3 in)
1992110.5 mm (4.4 in)
199390.1 mm (3.5 in)
199483.5 mm (3.3 in)
1995100.4 mm (4.0 in)
1996110.8 mm (4.4 in)
199776.2 mm (3.0 in)
1998117.9 mm (4.6 in)
199973.3 mm (2.9 in)
2000103.7 mm (4.1 in)
2001102.4 mm (4.0 in)
200291.7 mm (3.6 in)
200383.8 mm (3.3 in)
2004105.4 mm (4.1 in)
200565.8 mm (2.6 in)
200690.9 mm (3.6 in)
2007279.4 mm (11.0 in)
2008119.6 mm (4.7 in)
2009123.9 mm (4.9 in)
201067.5 mm (2.7 in)
2011117.1 mm (4.6 in)
2012148.6 mm (5.9 in)
2013114.3 mm (4.5 in)
2014148.5 mm (5.8 in)
2015155.5 mm (6.1 in)
201667.8 mm (2.7 in)
2017117.7 mm (4.6 in)
201883.8 mm (3.3 in)
2019157.5 mm (6.2 in)
2020117.4 mm (4.6 in)
202159.7 mm (2.4 in)
202253.1 mm (2.1 in)
202380.0 mm (3.1 in)
202474.0 mm (2.9 in)
202550.3 mm (2.0 in)
2026131.8 mm (5.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Marseilles Lock/Dam by year The longest dry spell of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 41 days in 1969, marked on the chart; the median year is 21 days. 10203040501960198020002020Record: 41 days in 1969
The longest dry spell of the year at Marseilles Lock/Dam, 1941 to 2026. The record is 41 days in 1969, marked on the chart; the median year is 21 days.
Longest dry spell (CDD) at Marseilles Lock/Dam by year
YearLongest dry spell (CDD)
194119 days
194227 days
194327 days
194431 days
194522 days
194622 days
194726 days
194820 days
194921 days
195021 days
195116 days
195233 days
195323 days
195423 days
195527 days
195625 days
195728 days
195828 days
195919 days
196018 days
196115 days
196218 days
196316 days
196436 days
196520 days
196625 days
196723 days
196819 days
196941 days
197017 days
197123 days
197213 days
197315 days
197416 days
197515 days
197626 days
197718 days
197820 days
197931 days
198020 days
198129 days
198218 days
198321 days
198417 days
198517 days
198622 days
198729 days
198822 days
198924 days
199016 days
199141 days
199225 days
199321 days
199423 days
199534 days
199625 days
199719 days
199817 days
199930 days
200020 days
200119 days
200222 days
200321 days
200423 days
200517 days
200618 days
200717 days
200815 days
200915 days
201017 days
201114 days
201221 days
201314 days
201418 days
201520 days
201619 days
201716 days
201825 days
201913 days
202015 days
202132 days
202214 days
202321 days
202425 days
202519 days
202616 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

26 years with a frost

Across 26 years with a frost, the median last spring frost at Marseilles Lock/Dam falls on 30 April and the median first autumn frost on 17 October, which leaves a median of 171 days between them.

Fitted over all years, the growing season changes by +1.2 days per decade at this station.

Frost dates and growing season at Marseilles Lock/Dam
MeasureMedian, all yearsEarliest periodRecent period (1998 to 2025)Recent against earliestFitted trend
Last spring frost30 Apriln/a30 Apriln/a+2.2 days per decade
First autumn frost17 Octobern/a17 Octobern/a+3.4 days per decade
Growing days171 daysn/a171 daysn/a+1.2 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

84 years, 1941 to 2025

A day with at least 62.8 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 165.0 mm (6.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Marseilles Lock/Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years62.8 mm (2.5 in)
5 years84.6 mm (3.3 in)
10 years101.1 mm (4.0 in)
25 years124.4 mm (4.9 in)
50 years143.8 mm (5.7 in)
100 years165.0 mm (6.5 in)Longer than the 84 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, 84 years of values from 1941 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: 172.7 mm (6.8 in) in 1958; 152.4 mm (6.0 in) in 2007; 141.0 mm (5.6 in) in 2019.

Download the Data

  • Data for Marseilles Lock/Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Marseilles Lock/Dam 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.

Data as of . Last revised (2026-10-14).