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Channahon Dresden Isl Dam Weather Records (USC00111420)

Record envelope, standing records and threshold days for Channahon Dresden Isl Dam (USC00111420), Illinois, United States, with 71 years of record.

Key Facts for Channahon Dresden Isl Dam

  • Channahon Dresden Isl Dam (USC00111420) is a weather station in Illinois, United States at 41.40 latitude and -88.28 longitude, 154 m (505 ft) above sea level.
  • The station reports from 1943 to 2013, 71 years of record.
  • 1,464 records set at Channahon Dresden Isl Dam still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Channahon Dresden Isl Dam tied a daily record snow depth of 12.7 cm (5.0 in) on 7 March 2013.

About the Station

  • Location: Illinois, United States, 41.40 latitude, -88.28 longitude.
  • Elevation: 154 m (505 ft).
  • Period of record: 1943 to 2013, 71 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Channahon Dresden Isl Dam, with 2026 drawn through them The band shows the record high and record low for each calendar day at Channahon Dresden Isl Dam. The lines show the 2026 daily maximum and minimum. 0 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 Channahon Dresden Isl Dam. 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 Channahon Dresden Isl Dam, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-31.1 C (-24.0 F)n/an/a
Feb22.8 C (73.0 F)-26.1 C (-15.0 F)n/an/a
Mar30.0 C (86.0 F)-22.8 C (-9.0 F)n/an/a
Apr33.9 C (93.0 F)-7.2 C (19.0 F)n/an/a
May36.1 C (97.0 F)-1.1 C (30.0 F)n/an/a
Jun37.2 C (99.0 F)4.4 C (39.9 F)n/an/a
Jul38.3 C (100.9 F)9.4 C (48.9 F)n/an/a
Aug36.7 C (98.1 F)7.2 C (45.0 F)n/an/a
Sep35.6 C (96.1 F)2.2 C (36.0 F)n/an/a
Oct32.8 C (91.0 F)-5.6 C (21.9 F)n/an/a
Nov25.6 C (78.1 F)-11.7 C (10.9 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 Channahon Dresden Isl Dam by the year they were set 1,464 records at Channahon Dresden Isl Dam still stand. 2000 holds the most, with 116. 0501001501976: 141977: 91979: 111997: 1091998: 891999: 992000: 1162001: 902002: 1032003: 852004: 832005: 862006: 912007: 862008: 852009: 702010: 562011: 722012: 1012013: 91976197919982000200220042006200820102012
1,464 records at Channahon Dresden Isl Dam still stand. 2000 holds the most, with 116.
Standing records at Channahon Dresden Isl Dam by the year they were set
Year setStanding records
197614
19779
197911
1997109
199889
199999
2000116
200190
2002103
200385
200483
200586
200691
200786
200885
200970
201056
201172
2012101
20139

All-Time Record Progression

8 new records
When Channahon Dresden Isl Dam set new all-time records 8 all-time records were set at Channahon Dresden Isl Dam between 26 June 1978 and 31 January 1979. Each dot is a new record. Record daily precipitationRecord snow depth26 June 1978: Record daily precipitation 189.5 mm (7.5 in)14 January 1979: Record snow depth 68.6 cm (27.0 in)16 January 1979: Record snow depth 71.1 cm (28.0 in)17 January 1979: Record snow depth 76.2 cm (30.0 in)24 January 1979: Record snow depth 81.3 cm (32.0 in)25 January 1979: Record snow depth 86.4 cm (34.0 in)28 January 1979: Record snow depth 94.0 cm (37.0 in)31 January 1979: Record snow depth 96.5 cm (38.0 in)1980
8 all-time records were set at Channahon Dresden Isl Dam between 26 June 1978 and 31 January 1979. Each dot is a new record.
When Channahon Dresden Isl Dam set new all-time records
DateKindDetail
1978-06-26Record daily precipitationRecord daily precipitation 189.5 mm (7.5 in)
1979-01-14Record snow depthRecord snow depth 68.6 cm (27.0 in)
1979-01-16Record snow depthRecord snow depth 71.1 cm (28.0 in)
1979-01-17Record snow depthRecord snow depth 76.2 cm (30.0 in)
1979-01-24Record snow depthRecord snow depth 81.3 cm (32.0 in)
1979-01-25Record snow depthRecord snow depth 86.4 cm (34.0 in)
1979-01-28Record snow depthRecord snow depth 94.0 cm (37.0 in)
1979-01-31Record snow depthRecord snow depth 96.5 cm (38.0 in)

Wettest Day of Each Month

Jun: 189.5 mm (7.5 in)
Record daily precipitation for each month at Channahon Dresden Isl Dam The wettest day on record for each calendar month at Channahon Dresden Isl Dam. The most was 189.5 mm (7.5 in) on 26 June 1978. 050100150200 Jan: 49.3 mm (1.9 in), 14 January 1995 Jan Feb: 67.8 mm (2.7 in), 21 February 1997 Feb Mar: 68.1 mm (2.7 in), 16 March 1984 Mar Apr: 75.9 mm (3.0 in), 5 April 1947 Apr May: 68.6 mm (2.7 in), 20 May 1949 May Jun: 189.5 mm (7.5 in), 26 June 1978 Jun Jul: 120.7 mm (4.8 in), 13 July 1957 Jul Aug: 104.6 mm (4.1 in), 24 August 2007 Aug Sep: 113.8 mm (4.5 in), 24 September 1961 Sep Oct: 71.4 mm (2.8 in), 11 October 1954 Oct Nov: 64.0 mm (2.5 in), 28 November 1990 Nov Dec: 86.4 mm (3.4 in), 3 December 1982 Dec
The wettest day on record for each calendar month at Channahon Dresden Isl Dam. The most was 189.5 mm (7.5 in) on 26 June 1978.
Record daily precipitation for each month at Channahon Dresden Isl Dam
MonthRecord daily precipitation (mm)Date
Jan49.3 mm (1.9 in)14 January 1995
Feb67.8 mm (2.7 in)21 February 1997
Mar68.1 mm (2.7 in)16 March 1984
Apr75.9 mm (3.0 in)5 April 1947
May68.6 mm (2.7 in)20 May 1949
Jun189.5 mm (7.5 in)26 June 1978
Jul120.7 mm (4.8 in)13 July 1957
Aug104.6 mm (4.1 in)24 August 2007
Sep113.8 mm (4.5 in)24 September 1961
Oct71.4 mm (2.8 in)11 October 1954
Nov64.0 mm (2.5 in)28 November 1990
Dec86.4 mm (3.4 in)3 December 1982

Period of Record Coverage

1976 to 2013
Days with data per year at Channahon Dresden Isl Dam 20 years of record at Channahon Dresden Isl Dam, 1976 to 2013. 6 years have data for under 90 percent of days and are left out of rankings: 1976, 1977, 1979, 1997, 2009, 2013. 1976: 30 of 366 days1977: 28 of 365 days1979: 31 of 365 days1997: 306 of 365 days1998: 360 of 365 days1999: 363 of 365 days2000: 363 of 366 days2001: 364 of 365 days2002: 363 of 365 days2003: 362 of 365 days2004: 366 of 366 days2005: 363 of 365 days2006: 364 of 365 days2007: 360 of 365 days2008: 350 of 366 days2009: 307 of 365 days2010: 346 of 365 days2011: 360 of 365 days2012: 362 of 366 days2013: 69 of 365 days200020052010
20 years of record at Channahon Dresden Isl Dam, 1976 to 2013. 6 years have data for under 90 percent of days and are left out of rankings: 1976, 1977, 1979, 1997, 2009, 2013.
Days with data per year at Channahon Dresden Isl Dam
YearDays with dataShare of yearComplete
1976308%No
1977288%No
1979318%No
199730684%No
199836099%Yes
199936399%Yes
200036399%Yes
2001364100%Yes
200236399%Yes
200336299%Yes
2004366100%Yes
200536399%Yes
2006364100%Yes
200736099%Yes
200835096%Yes
200930784%No
201034695%Yes
201136099%Yes
201236299%Yes
20136919%No

Latest Records

20
Latest records at Channahon Dresden Isl Dam
DateStationRecordValueBeat old record byOld record stoodSignificance
7 March 2013Channahon Dresden Isl Dam, USdaily snow depth (Tie)12.7 cm (5.0 in)tie34 years4 of 100 (Routine)
6 March 2013Channahon Dresden Isl Dam, USdaily snowfall13.5 cm (5.3 in)9.7 cm (3.8 in)7 years32 of 100 (Routine)
6 March 2013Channahon Dresden Isl Dam, USdaily snow depth (Tie)12.7 cm (5.0 in)tie34 years4 of 100 (Routine)
27 February 2013Channahon Dresden Isl Dam, USdaily snowfall6.6 cm (2.6 in)5.3 cm (2.1 in)36 years30 of 100 (Routine)
8 February 2013Channahon Dresden Isl Dam, USdaily rain17.5 mm (0.7 in)9.6 mm (0.38 in)68 years20 of 100 (Routine)
30 January 2013Channahon Dresden Isl Dam, USdaily rain41.9 mm (1.6 in)2.5 mm (0.10 in)66 years29 of 100 (Routine)
11 January 2013Channahon Dresden Isl Dam, USdaily rain22.9 mm (0.9 in)15.0 mm (0.6 in)19 years20 of 100 (Routine)
27 November 2011Channahon Dresden Isl Dam, USdaily rain (Tie)27.9 mm (1.1 in)tie26 years3 of 100 (Routine)
9 August 2011Channahon Dresden Isl Dam, USdaily rain53.3 mm (2.1 in)26.4 mm (1.0 in)42 years38 of 100 (Notable)
9 June 2011Channahon Dresden Isl Dam, USdaily rain41.1 mm (1.6 in)2.5 mm (0.10 in)52 years22 of 100 (Routine)
29 May 2011Channahon Dresden Isl Dam, USdaily rain39.4 mm (1.6 in)0.8 mm (0.03 in)30 years15 of 100 (Routine)
26 May 2011Channahon Dresden Isl Dam, USdaily rain57.9 mm (2.3 in)31.5 mm (1.2 in)20 years40 of 100 (Notable)
5 March 2011Channahon Dresden Isl Dam, USdaily rain39.1 mm (1.5 in)17.5 mm (0.7 in)46 years40 of 100 (Notable)
2 February 2011Channahon Dresden Isl Dam, USdaily rain19.8 mm (0.8 in)6.3 mm (0.25 in)20 years20 of 100 (Routine)
2 February 2011Channahon Dresden Isl Dam, USmonthly snowfall (Tie)17.8 cm (7.0 in)tie40 years7 of 100 (Routine)
12 January 2011Channahon Dresden Isl Dam, USdaily snowfall5.1 cm (2.0 in)1.3 cm (0.5 in)64 years27 of 100 (Routine)
25 December 2010Channahon Dresden Isl Dam, USdaily snowfall11.4 cm (4.5 in)2.5 cm (1.0 in)59 years29 of 100 (Routine)
10 December 2010Channahon Dresden Isl Dam, USdaily snowfall8.9 cm (3.5 in)2.5 cm (1.0 in)63 years30 of 100 (Routine)
4 December 2010Channahon Dresden Isl Dam, USdaily snowfall10.2 cm (4.0 in)2.6 cm (1.0 in)45 years25 of 100 (Routine)
3 September 2010Channahon Dresden Isl Dam, USdaily rain48.3 mm (1.9 in)31.3 mm (1.2 in)16 years33 of 100 (Routine)

Climate Trend

13 complete years, 1998 to 2012
Annual mean temperature at Channahon Dresden Isl Dam as warming stripes, 1998 to 2012 One stripe for each of 13 complete years at Channahon Dresden Isl Dam, 1998 to 2012. Blue stripes are years cooler than the station's own mean of 10.8 C (51.4 F); red stripes are warmer. The coolest year was 2000, at 9.7 C (49.5 F), and the warmest was 2012, at 12.5 C (54.6 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1998: 11.8 C, +1.0 C from the station mean1999: 10.4 C, -0.4 C from the station mean2000: 9.7 C, -1.0 C from the station mean2001: 10.6 C, -0.2 C from the station mean2002: 10.2 C, -0.6 C from the station mean2003: 9.7 C, -1.0 C from the station mean2004: 10.0 C, -0.8 C from the station mean2005: 11.0 C, +0.2 C from the station mean2006: 11.6 C, +0.8 C from the station mean2007: 11.1 C, +0.3 C from the station mean2010: 10.6 C, -0.2 C from the station mean2011: 11.0 C, +0.2 C from the station mean2012: 12.5 C, +1.8 C from the station mean19982000200220042006200820102012
One stripe for each of 13 complete years at Channahon Dresden Isl Dam, 1998 to 2012. Blue stripes are years cooler than the station's own mean of 10.8 C (51.4 F); red stripes are warmer. The coolest year was 2000, at 9.7 C (49.5 F), and the warmest was 2012, at 12.5 C (54.6 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Channahon Dresden Isl Dam as warming stripes, 1998 to 2012
YearAnnual mean temperatureDifference from the station mean
199811.8 C+0.97 C
199910.4 C-0.38 C
20009.7 C-1.05 C
200110.6 C-0.22 C
200210.2 C-0.56 C
20039.7 C-1.04 C
200410.0 C-0.78 C
200511.0 C+0.17 C
200611.6 C+0.80 C
200711.1 C+0.28 C
201010.6 C-0.23 C
201111.0 C+0.22 C
201212.5 C+1.76 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

1943 to 2013
Yearly extremes at Channahon Dresden Isl Dam: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.3 C (100.9 F)200535.6 C (96.1 F)20
Coldest night (TNn)-31.1 C (-24.0 F)1999-21.4 C (-6.5 F)20
Wettest day (Rx1day)189.5 mm (7.5 in)197859.2 mm (2.3 in)71
Wettest five days (Rx5day)215.8 mm (8.5 in)196196.8 mm (3.8 in)71
Longest dry spell (CDD)40 days196922 days71

Hottest day (TXx)

Hottest day (TXx) at Channahon Dresden Isl Dam by year The hottest day of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 38.3 C (100.9 F) in 2005, marked on the chart; the median year is 35.6 C (96.1 F). 10203040196019802000Record: 38.3 C (100.9 F) in 2005
The hottest day of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 38.3 C (100.9 F) in 2005, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Channahon Dresden Isl Dam by year
YearHottest day (TXx)
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
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
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
197633.9 C (93.0 F)
197736.1 C (97.0 F)
1978n/a
197932.2 C (90.0 F)
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
199736.7 C (98.1 F)
199835.6 C (96.1 F)
199937.8 C (100.0 F)
200035.6 C (96.1 F)
200135.0 C (95.0 F)
200236.7 C (98.1 F)
200335.6 C (96.1 F)
200432.8 C (91.0 F)
200538.3 C (100.9 F)
200636.7 C (98.1 F)
200735.0 C (95.0 F)
200835.6 C (96.1 F)
200933.9 C (93.0 F)
201034.4 C (93.9 F)
201137.2 C (99.0 F)
201238.3 C (100.9 F)
201316.7 C (62.1 F)

Coldest night (TNn)

Coldest night (TNn) at Channahon Dresden Isl Dam by year The coldest night of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is -31.1 C (-24.0 F) in 1999, marked on the chart; the median year is -21.4 C (-6.5 F). -40-20020196019802000Record: -31.1 C (-24.0 F) in 1999
The coldest night of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is -31.1 C (-24.0 F) in 1999, marked on the chart; the median year is -21.4 C (-6.5 F).
Coldest night (TNn) at Channahon Dresden Isl Dam by year
YearColdest night (TNn)
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
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
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976-6.7 C (19.9 F)
19779.4 C (48.9 F)
1978n/a
1979-1.1 C (30.0 F)
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)
1999-31.1 C (-24.0 F)
2000-26.7 C (-16.1 F)
2001-21.1 C (-6.0 F)
2002-22.8 C (-9.0 F)
2003-23.3 C (-9.9 F)
2004-22.2 C (-8.0 F)
2005-18.9 C (-2.0 F)
2006-20.0 C (-4.0 F)
2007-21.7 C (-7.1 F)
2008-23.9 C (-11.0 F)
2009-30.0 C (-22.0 F)
2010-22.8 C (-9.0 F)
2011-26.1 C (-15.0 F)
2012-13.9 C (7.0 F)
2013-17.2 C (1.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Channahon Dresden Isl Dam by year The wettest day of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 189.5 mm (7.5 in) in 1978, marked on the chart; the median year is 59.2 mm (2.3 in). 050100150200196019802000Record: 189.5 mm (7.5 in) in 1978
The wettest day of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 189.5 mm (7.5 in) in 1978, marked on the chart; the median year is 59.2 mm (2.3 in).
Wettest day (Rx1day) at Channahon Dresden Isl Dam by year
YearWettest day (Rx1day)
194342.4 mm (1.7 in)
194460.2 mm (2.4 in)
194535.3 mm (1.4 in)
194640.1 mm (1.6 in)
194775.9 mm (3.0 in)
194838.1 mm (1.5 in)
194968.6 mm (2.7 in)
195083.6 mm (3.3 in)
195166.3 mm (2.6 in)
195246.2 mm (1.8 in)
195363.5 mm (2.5 in)
195473.2 mm (2.9 in)
195565.5 mm (2.6 in)
195659.7 mm (2.4 in)
1957120.7 mm (4.8 in)
195847.2 mm (1.9 in)
195943.4 mm (1.7 in)
196037.1 mm (1.5 in)
1961113.8 mm (4.5 in)
196255.9 mm (2.2 in)
196327.2 mm (1.1 in)
196451.8 mm (2.0 in)
196561.7 mm (2.4 in)
196663.0 mm (2.5 in)
196756.4 mm (2.2 in)
196858.7 mm (2.3 in)
196952.8 mm (2.1 in)
197061.7 mm (2.4 in)
197134.3 mm (1.4 in)
197281.0 mm (3.2 in)
197350.3 mm (2.0 in)
197450.8 mm (2.0 in)
197547.5 mm (1.9 in)
197659.9 mm (2.4 in)
197769.6 mm (2.7 in)
1978189.5 mm (7.5 in)
197955.4 mm (2.2 in)
198060.5 mm (2.4 in)
198169.3 mm (2.7 in)
198286.4 mm (3.4 in)
198361.2 mm (2.4 in)
198468.1 mm (2.7 in)
198551.6 mm (2.0 in)
198651.1 mm (2.0 in)
198764.0 mm (2.5 in)
198836.3 mm (1.4 in)
198972.4 mm (2.9 in)
199066.5 mm (2.6 in)
199158.4 mm (2.3 in)
1992103.6 mm (4.1 in)
199351.3 mm (2.0 in)
199448.5 mm (1.9 in)
199566.3 mm (2.6 in)
199658.2 mm (2.3 in)
199767.8 mm (2.7 in)
199852.1 mm (2.1 in)
199949.8 mm (2.0 in)
200094.5 mm (3.7 in)
200155.6 mm (2.2 in)
200263.5 mm (2.5 in)
200344.2 mm (1.7 in)
200453.3 mm (2.1 in)
200573.7 mm (2.9 in)
200669.9 mm (2.8 in)
2007104.6 mm (4.1 in)
200865.3 mm (2.6 in)
200959.2 mm (2.3 in)
201051.8 mm (2.0 in)
201157.9 mm (2.3 in)
201250.0 mm (2.0 in)
201341.9 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Channahon Dresden Isl Dam by year The wettest five days of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 215.8 mm (8.5 in) in 1961, marked on the chart; the median year is 96.8 mm (3.8 in). 050100150200250196019802000Record: 215.8 mm (8.5 in) in 1961
The wettest five days of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 215.8 mm (8.5 in) in 1961, marked on the chart; the median year is 96.8 mm (3.8 in).
Wettest five days (Rx5day) at Channahon Dresden Isl Dam by year
YearWettest five days (Rx5day)
194367.1 mm (2.6 in)
194498.8 mm (3.9 in)
194579.3 mm (3.1 in)
194663.8 mm (2.5 in)
194792.7 mm (3.6 in)
194863.7 mm (2.5 in)
194985.4 mm (3.4 in)
1950145.0 mm (5.7 in)
195192.5 mm (3.6 in)
195298.0 mm (3.9 in)
1953135.6 mm (5.3 in)
1954106.2 mm (4.2 in)
195573.2 mm (2.9 in)
1956123.9 mm (4.9 in)
1957121.7 mm (4.8 in)
195897.6 mm (3.8 in)
195970.5 mm (2.8 in)
196067.6 mm (2.7 in)
1961215.8 mm (8.5 in)
196269.6 mm (2.7 in)
196341.7 mm (1.6 in)
196479.0 mm (3.1 in)
196583.9 mm (3.3 in)
196689.4 mm (3.5 in)
1967105.4 mm (4.1 in)
196896.8 mm (3.8 in)
196986.3 mm (3.4 in)
1970110.2 mm (4.3 in)
197163.0 mm (2.5 in)
1972136.6 mm (5.4 in)
197377.2 mm (3.0 in)
1974109.0 mm (4.3 in)
197581.6 mm (3.2 in)
1976105.2 mm (4.1 in)
1977115.3 mm (4.5 in)
1978195.3 mm (7.7 in)
197996.0 mm (3.8 in)
1980150.9 mm (5.9 in)
1981146.1 mm (5.8 in)
1982118.1 mm (4.6 in)
198369.4 mm (2.7 in)
198494.6 mm (3.7 in)
198577.2 mm (3.0 in)
1986132.1 mm (5.2 in)
198783.4 mm (3.3 in)
198861.5 mm (2.4 in)
198983.6 mm (3.3 in)
1990100.4 mm (4.0 in)
1991126.5 mm (5.0 in)
1992115.0 mm (4.5 in)
199385.4 mm (3.4 in)
1994101.1 mm (4.0 in)
199578.5 mm (3.1 in)
1996113.3 mm (4.5 in)
199775.7 mm (3.0 in)
1998119.3 mm (4.7 in)
1999105.1 mm (4.1 in)
2000118.6 mm (4.7 in)
200176.2 mm (3.0 in)
200294.5 mm (3.7 in)
200384.1 mm (3.3 in)
2004165.2 mm (6.5 in)
2005105.2 mm (4.1 in)
200695.5 mm (3.8 in)
2007194.2 mm (7.6 in)
2008175.4 mm (6.9 in)
2009129.1 mm (5.1 in)
2010119.7 mm (4.7 in)
2011116.6 mm (4.6 in)
201276.6 mm (3.0 in)
201362.9 mm (2.5 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Channahon Dresden Isl Dam by year The longest dry spell of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 40 days in 1969, marked on the chart; the median year is 22 days. 10203040196019802000Record: 40 days in 1969
The longest dry spell of the year at Channahon Dresden Isl Dam, 1943 to 2013. The record is 40 days in 1969, marked on the chart; the median year is 22 days.
Longest dry spell (CDD) at Channahon Dresden Isl Dam by year
YearLongest dry spell (CDD)
194324 days
194429 days
194516 days
194624 days
194726 days
194828 days
194921 days
195030 days
195117 days
195232 days
195323 days
195424 days
195524 days
195617 days
195722 days
195826 days
195923 days
196018 days
196126 days
196218 days
196319 days
196425 days
196515 days
196626 days
196722 days
196820 days
196940 days
197017 days
197127 days
197213 days
197314 days
197415 days
197512 days
197627 days
197714 days
197816 days
197933 days
198013 days
198131 days
198221 days
198321 days
198415 days
198519 days
198622 days
198729 days
198825 days
198924 days
199017 days
199130 days
199219 days
199321 days
199422 days
199534 days
199622 days
199721 days
199813 days
199937 days
200024 days
200114 days
200220 days
200319 days
200423 days
200524 days
200616 days
200715 days
200816 days
200936 days
201022 days
201124 days
201216 days
201311 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

69 years, 1944 to 2012

A day with at least 58.0 mm (2.3 in) of rain is expected about once in 2 years. A day with at least 143.2 mm (5.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Channahon Dresden Isl Dam: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years58.0 mm (2.3 in)
5 years75.6 mm (3.0 in)
10 years89.1 mm (3.5 in)
25 years108.6 mm (4.3 in)
50 years125.0 mm (4.9 in)
100 years143.2 mm (5.6 in)Longer than the 69 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, 69 years of values from 1944 to 2012.

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: 189.5 mm (7.5 in) in 1978; 120.7 mm (4.8 in) in 1957; 113.8 mm (4.5 in) in 1961.

Download the Data

  • Data for Channahon Dresden Isl Dam standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Channahon Dresden Isl 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 (2025-12-31).