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Kankakee Wwtp Weather Records (USC00114603)

Record envelope, standing records and threshold days for Kankakee Wwtp (USC00114603), Illinois, United States, with 79 years of record.

Key Facts for Kankakee Wwtp

  • Kankakee Wwtp (USC00114603) is a weather station in Illinois, United States at 41.13 latitude and -87.89 longitude, 183 m (600 ft) above sea level.
  • The station reports from 1948 to 2026, 79 years of record.
  • 1,464 records set at Kankakee Wwtp still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Kankakee Wwtp set a daily record high minimum temperature of 18.3 C (64.9 F) on 14 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, 41.13 latitude, -87.89 longitude.
  • Elevation: 183 m (600 ft).
  • Period of record: 1948 to 2026, 79 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

10 days at or beyond a record
Daily record high and record low at Kankakee Wwtp, with 2026 drawn through them The band shows the record high and record low for each calendar day at Kankakee Wwtp. The lines show the 2026 daily maximum and minimum. 10 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 Kankakee Wwtp. The lines show the 2026 daily maximum and minimum. 10 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kankakee Wwtp, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-33.9 C (-29.0 F)16.7 C (62.1 F)-22.2 C (-8.0 F)
Feb23.3 C (73.9 F)-29.4 C (-20.9 F)18.9 C (66.0 F)-16.1 C (3.0 F)
Mar29.4 C (84.9 F)-21.7 C (-7.1 F)27.2 C (81.0 F)-9.4 C (15.1 F)
Apr32.8 C (91.0 F)-13.3 C (8.1 F)27.8 C (82.0 F)-1.1 C (30.0 F)
May37.2 C (99.0 F)-2.8 C (27.0 F)31.7 C (89.1 F)1.1 C (34.0 F)
Jun39.4 C (102.9 F)3.3 C (37.9 F)33.3 C (91.9 F)11.1 C (52.0 F)
Jul39.4 C (102.9 F)7.8 C (46.0 F)34.4 C (93.9 F)11.7 C (53.1 F)
Aug41.7 C (107.1 F)3.9 C (39.0 F)31.7 C (89.1 F)12.8 C (55.0 F)
Sep37.2 C (99.0 F)-1.1 C (30.0 F)35.0 C (95.0 F)9.4 C (48.9 F)
Oct32.2 C (90.0 F)-7.8 C (18.0 F)31.7 C (89.1 F)7.8 C (46.0 F)
Nov26.1 C (79.0 F)-17.2 C (1.0 F)n/an/a
Dec21.7 C (71.1 F)-32.2 C (-26.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Kankakee Wwtp by the year they were set 1,464 records at Kankakee Wwtp still stand. 1977 holds the most, with 54. 02040601973: 161974: 381975: 301976: 301977: 541978: 241979: 411980: 261981: 221982: 331983: 411984: 321985: 281986: 361987: 231988: 521989: 451990: 401991: 461992: 231993: 211994: 281995: 261996: 251997: 211998: 241999: 312000: 322001: 192002: 412003: 172004: 232005: 262006: 202007: 262008: 112009: 162010: 162011: 192012: 392013: 202014: 362015: 342016: 112017: 312018: 322019: 182020: 172021: 172022: 132023: 142024: 192025: 212026: 20197319791985199119972003200920152021
1,464 records at Kankakee Wwtp still stand. 1977 holds the most, with 54.
Standing records at Kankakee Wwtp by the year they were set
Year setStanding records
197316
197438
197530
197630
197754
197824
197941
198026
198122
198233
198341
198432
198528
198636
198723
198852
198945
199040
199146
199223
199321
199428
199526
199625
199721
199824
199931
200032
200119
200241
200317
200423
200526
200620
200726
200811
200916
201016
201119
201239
201320
201436
201534
201611
201731
201832
201918
202017
202117
202213
202314
202419
202521
202620

All-Time Record Progression

3 new records
When Kankakee Wwtp set new all-time records 3 all-time records were set at Kankakee Wwtp between 23 July 2010 and 17 June 2012. Each dot is a new record. Record high minimum temperatureRecord daily precipitation23 July 2010: Record high minimum temperature 25.6 C (78.1 F)22 July 2011: Record high minimum temperature 26.1 C (79.0 F)17 June 2012: Record daily precipitation 148.6 mm (5.9 in)2010
3 all-time records were set at Kankakee Wwtp between 23 July 2010 and 17 June 2012. Each dot is a new record.
When Kankakee Wwtp set new all-time records
DateKindDetail
2010-07-23Record high minimum temperatureRecord high minimum temperature 25.6 C (78.1 F)
2011-07-22Record high minimum temperatureRecord high minimum temperature 26.1 C (79.0 F)
2012-06-17Record daily precipitationRecord daily precipitation 148.6 mm (5.9 in)

Wettest Day of Each Month

Jun: 148.6 mm (5.9 in)
Record daily precipitation for each month at Kankakee Wwtp The wettest day on record for each calendar month at Kankakee Wwtp. The most was 148.6 mm (5.9 in) on 17 June 2012. 050100150 Jan: 70.6 mm (2.8 in), 8 January 2008 Jan Feb: 49.0 mm (1.9 in), 25 February 2001 Feb Mar: 76.2 mm (3.0 in), 9 March 2009 Mar Apr: 118.1 mm (4.6 in), 19 April 1975 Apr May: 100.3 mm (3.9 in), 25 May 2006 May Jun: 148.6 mm (5.9 in), 17 June 2012 Jun Jul: 110.7 mm (4.4 in), 10 July 2000 Jul Aug: 83.8 mm (3.3 in), 31 August 1980 Aug Sep: 87.4 mm (3.4 in), 1 September 1989 Sep Oct: 77.5 mm (3.1 in), 25 October 2021 Oct Nov: 85.3 mm (3.4 in), 28 November 1990 Nov Dec: 92.7 mm (3.6 in), 3 December 1982 Dec
The wettest day on record for each calendar month at Kankakee Wwtp. The most was 148.6 mm (5.9 in) on 17 June 2012.
Record daily precipitation for each month at Kankakee Wwtp
MonthRecord daily precipitation (mm)Date
Jan70.6 mm (2.8 in)8 January 2008
Feb49.0 mm (1.9 in)25 February 2001
Mar76.2 mm (3.0 in)9 March 2009
Apr118.1 mm (4.6 in)19 April 1975
May100.3 mm (3.9 in)25 May 2006
Jun148.6 mm (5.9 in)17 June 2012
Jul110.7 mm (4.4 in)10 July 2000
Aug83.8 mm (3.3 in)31 August 1980
Sep87.4 mm (3.4 in)1 September 1989
Oct77.5 mm (3.1 in)25 October 2021
Nov85.3 mm (3.4 in)28 November 1990
Dec92.7 mm (3.6 in)3 December 1982

Period of Record Coverage

1973 to 2026
Days with data per year at Kankakee Wwtp 54 years of record at Kankakee Wwtp, 1973 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1973, 2007, 2008, 2009, 2010, 2026. 1973: 291 of 365 days1974: 364 of 365 days1975: 364 of 365 days1976: 364 of 366 days1977: 361 of 365 days1978: 358 of 365 days1979: 361 of 365 days1980: 362 of 366 days1981: 363 of 365 days1982: 360 of 365 days1983: 359 of 365 days1984: 335 of 366 days1985: 355 of 365 days1986: 360 of 365 days1987: 362 of 365 days1988: 364 of 366 days1989: 363 of 365 days1990: 363 of 365 days1991: 356 of 365 days1992: 363 of 366 days1993: 361 of 365 days1994: 356 of 365 days1995: 361 of 365 days1996: 364 of 366 days1997: 361 of 365 days1998: 365 of 365 days1999: 364 of 365 days2000: 366 of 366 days2001: 360 of 365 days2002: 358 of 365 days2003: 365 of 365 days2004: 365 of 366 days2005: 332 of 365 days2006: 365 of 365 days2007: 298 of 365 days2008: 294 of 366 days2009: 310 of 365 days2010: 308 of 365 days2011: 362 of 365 days2012: 366 of 366 days2013: 358 of 365 days2014: 362 of 365 days2015: 363 of 365 days2016: 361 of 366 days2017: 351 of 365 days2018: 358 of 365 days2019: 352 of 365 days2020: 354 of 366 days2021: 348 of 365 days2022: 361 of 365 days2023: 363 of 365 days2024: 362 of 366 days2025: 362 of 365 days2026: 286 of 365 days19801990200020102020
54 years of record at Kankakee Wwtp, 1973 to 2026. 6 years have data for under 90 percent of days and are left out of rankings: 1973, 2007, 2008, 2009, 2010, 2026.
Days with data per year at Kankakee Wwtp
YearDays with dataShare of yearComplete
197329180%No
1974364100%Yes
1975364100%Yes
197636499%Yes
197736199%Yes
197835898%Yes
197936199%Yes
198036299%Yes
198136399%Yes
198236099%Yes
198335998%Yes
198433592%Yes
198535597%Yes
198636099%Yes
198736299%Yes
198836499%Yes
198936399%Yes
199036399%Yes
199135698%Yes
199236399%Yes
199336199%Yes
199435698%Yes
199536199%Yes
199636499%Yes
199736199%Yes
1998365100%Yes
1999364100%Yes
2000366100%Yes
200136099%Yes
200235898%Yes
2003365100%Yes
2004365100%Yes
200533291%Yes
2006365100%Yes
200729882%No
200829480%No
200931085%No
201030884%No
201136299%Yes
2012366100%Yes
201335898%Yes
201436299%Yes
201536399%Yes
201636199%Yes
201735196%Yes
201835898%Yes
201935296%Yes
202035497%Yes
202134895%Yes
202236199%Yes
202336399%Yes
202436299%Yes
202536299%Yes
202628678%No

Latest Records

20
Latest records at Kankakee Wwtp
DateStationRecordValueBeat old record byOld record stoodSignificance
14 October 2026Kankakee Wwtp, USdaily high min (Provisional)18.3 C (64.9 F)3.9 C (7.0 F)17 years17 of 100 (Routine)
13 October 2026Kankakee Wwtp, USdaily high max (Provisional)31.7 C (89.1 F)2.3 C (4.1 F)17 years13 of 100 (Routine)
2 October 2026Kankakee Wwtp, USdaily rain (Provisional)24.4 mm (1.0 in)3.6 mm (0.14 in)47 years20 of 100 (Routine)
18 September 2026Kankakee Wwtp, USdaily high min (Tie, Provisional)18.9 C (66.0 F)tie8 years1 of 100 (Routine)
17 September 2026Kankakee Wwtp, USdaily high min (Provisional)20.6 C (69.1 F)1.2 C (2.2 F)8 years9 of 100 (Routine)
16 September 2026Kankakee Wwtp, USdaily high max (Provisional)33.9 C (93.0 F)0.6 C (1.1 F)35 years16 of 100 (Routine)
6 September 2026Kankakee Wwtp, USdaily high min (Tie, Provisional)21.1 C (70.0 F)tie36 years3 of 100 (Routine)
5 September 2026Kankakee Wwtp, USmonthly high min (Tie, Provisional)23.3 C (73.9 F)tie53 years7 of 100 (Routine)
5 September 2026Kankakee Wwtp, USdaily high max (Tie, Provisional)34.4 C (93.9 F)tie27 years3 of 100 (Routine)
4 September 2026Kankakee Wwtp, USdaily high min (Provisional)22.8 C (73.0 F)0.6 C (1.1 F)52 years21 of 100 (Routine)
4 September 2026Kankakee Wwtp, USdaily high max (Tie, Provisional)35.0 C (95.0 F)tie25 years3 of 100 (Routine)
3 September 2026Kankakee Wwtp, USdaily high min (Tie, Provisional)22.8 C (73.0 F)tie52 years5 of 100 (Routine)
1 September 2026Kankakee Wwtp, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie52 years5 of 100 (Routine)
2 August 2026Kankakee Wwtp, USdaily low max21.1 C (70.0 F)1.1 C (2.0 F)52 years23 of 100 (Routine)
2 August 2026Kankakee Wwtp, USdaily rain30.7 mm (1.2 in)1.5 mm (0.06 in)32 years17 of 100 (Routine)
1 August 2026Kankakee Wwtp, USdaily rain22.6 mm (0.9 in)8.4 mm (0.33 in)13 years17 of 100 (Routine)
28 July 2026Kankakee Wwtp, USdaily rain48.8 mm (1.9 in)3.1 mm (0.12 in)44 years22 of 100 (Routine)
26 July 2026Kankakee Wwtp, USdaily low max22.8 C (73.0 F)0.5 C (0.9 F)41 years18 of 100 (Routine)
18 July 2026Kankakee Wwtp, USdaily high min (Tie)24.4 C (75.9 F)tie13 years2 of 100 (Routine)
17 July 2026Kankakee Wwtp, USdaily high min (Tie)23.3 C (73.9 F)tie13 years2 of 100 (Routine)

Climate Trend

46 complete years, 1974 to 2025
Annual mean temperature at Kankakee Wwtp as warming stripes, 1974 to 2025 One stripe for each of 46 complete years at Kankakee Wwtp, 1974 to 2025. Blue stripes are years cooler than the station's own mean of 10.4 C (50.6 F); red stripes are warmer. The coolest year was 1979, at 8.4 C (47.1 F), and the warmest was 2012, at 12.4 C (54.2 F). The strongest colour marks a difference of 2.1 C (3.8 F). 1974: 10.3 C, -0.1 C from the station mean1975: 10.6 C, +0.3 C from the station mean1976: 9.5 C, -0.8 C from the station mean1977: 10.2 C, -0.2 C from the station mean1978: 8.7 C, -1.7 C from the station mean1979: 8.4 C, -2.0 C from the station mean1980: 9.8 C, -0.6 C from the station mean1981: 9.7 C, -0.7 C from the station mean1982: 9.2 C, -1.2 C from the station mean1983: 10.2 C, -0.2 C from the station mean1985: 9.2 C, -1.2 C from the station mean1986: 10.0 C, -0.4 C from the station mean1987: 11.1 C, +0.8 C from the station mean1988: 10.5 C, +0.1 C from the station mean1989: 9.1 C, -1.2 C from the station mean1990: 11.0 C, +0.6 C from the station mean1991: 10.5 C, +0.1 C from the station mean1992: 9.7 C, -0.7 C from the station mean1993: 9.6 C, -0.7 C from the station mean1994: 9.7 C, -0.7 C from the station mean1995: 10.0 C, -0.4 C from the station mean1996: 9.4 C, -0.9 C from the station mean1997: 9.6 C, -0.8 C from the station mean1998: 12.0 C, +1.6 C from the station mean1999: 11.1 C, +0.8 C from the station mean2000: 10.3 C, 0.0 C from the station mean2001: 11.0 C, +0.6 C from the station mean2002: 10.8 C, +0.4 C from the station mean2003: 10.2 C, -0.1 C from the station mean2004: 10.6 C, +0.3 C from the station mean2006: 11.5 C, +1.1 C from the station mean2011: 10.8 C, +0.4 C from the station mean2012: 12.4 C, +2.0 C from the station mean2013: 9.8 C, -0.5 C from the station mean2014: 8.4 C, -1.9 C from the station mean2015: 10.6 C, +0.2 C from the station mean2016: 11.7 C, +1.3 C from the station mean2017: 11.5 C, +1.1 C from the station mean2018: 10.6 C, +0.3 C from the station mean2019: 10.3 C, -0.1 C from the station mean2020: 11.3 C, +0.9 C from the station mean2021: 11.3 C, +0.9 C from the station mean2022: 10.2 C, -0.1 C from the station mean2023: 11.5 C, +1.1 C from the station mean2024: 12.0 C, +1.7 C from the station mean2025: 10.8 C, +0.5 C from the station mean19741980198519901995200020052010201520202025
One stripe for each of 46 complete years at Kankakee Wwtp, 1974 to 2025. Blue stripes are years cooler than the station's own mean of 10.4 C (50.6 F); red stripes are warmer. The coolest year was 1979, at 8.4 C (47.1 F), and the warmest was 2012, at 12.4 C (54.2 F). The strongest colour marks a difference of 2.1 C (3.8 F).
Annual mean temperature at Kankakee Wwtp as warming stripes, 1974 to 2025
YearAnnual mean temperatureDifference from the station mean
197410.3 C-0.06 C
197510.6 C+0.29 C
19769.5 C-0.84 C
197710.2 C-0.18 C
19788.7 C-1.65 C
19798.4 C-1.97 C
19809.8 C-0.59 C
19819.7 C-0.67 C
19829.2 C-1.17 C
198310.2 C-0.16 C
19859.2 C-1.16 C
198610.0 C-0.40 C
198711.1 C+0.79 C
198810.5 C+0.12 C
19899.1 C-1.21 C
199011.0 C+0.64 C
199110.5 C+0.11 C
19929.7 C-0.69 C
19939.6 C-0.73 C
19949.7 C-0.65 C
199510.0 C-0.35 C
19969.4 C-0.94 C
19979.6 C-0.79 C
199812.0 C+1.62 C
199911.1 C+0.76 C
200010.3 C-0.03 C
200111.0 C+0.62 C
200210.8 C+0.43 C
200310.2 C-0.13 C
200410.6 C+0.28 C
200611.5 C+1.11 C
201110.8 C+0.43 C
201212.4 C+2.01 C
20139.8 C-0.54 C
20148.4 C-1.93 C
201510.6 C+0.21 C
201611.7 C+1.32 C
201711.5 C+1.11 C
201810.6 C+0.28 C
201910.3 C-0.07 C
202011.3 C+0.93 C
202111.3 C+0.90 C
202210.2 C-0.13 C
202311.5 C+1.15 C
202412.0 C+1.66 C
202510.8 C+0.47 C

The annual mean temperature here has risen by 0.3 C (0.2 to 0.5) per decade over 1974 to 2025. In Fahrenheit: 0.6 F (0.3 to 0.8) per decade. The slope is a straight line fitted to 46 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kankakee Wwtp
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.3 C (0.2 to 0.5) per decade0.6 F (0.3 to 0.8) per decade1974 to 202546Rise
Mean daily maximum0.17 C (-0.01 to 0.35) per decade0.31 F (-0.01 to 0.62) per decade1974 to 202546Not clearly different from zero
Mean daily minimum0.4 C (0.3 to 0.6) per decade0.8 F (0.5 to 1.1) per decade1974 to 202546Rise

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

1948 to 2026
Yearly extremes at Kankakee Wwtp: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)41.7 C (107.1 F)198835.6 C (96.1 F)54
Coldest night (TNn)-33.9 C (-29.0 F)1985-22.8 C (-9.0 F)54
Wettest day (Rx1day)148.6 mm (5.9 in)201271.0 mm (2.8 in)58
Wettest five days (Rx5day)168.6 mm (6.6 in)1996100.7 mm (4.0 in)58
Longest dry spell (CDD)33 days197918 days58

Hottest day (TXx)

Hottest day (TXx) at Kankakee Wwtp by year The hottest day of the year at Kankakee Wwtp, 1948 to 2026. The record is 41.7 C (107.1 F) in 1988, marked on the chart; the median year is 35.6 C (96.1 F). 303540451960198020002020Record: 41.7 C (107.1 F) in 1988
The hottest day of the year at Kankakee Wwtp, 1948 to 2026. The record is 41.7 C (107.1 F) in 1988, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Kankakee Wwtp by year
YearHottest day (TXx)
1948n/a
1949n/a
1950n/a
1951n/a
197335.0 C (95.0 F)
197437.2 C (99.0 F)
197534.4 C (93.9 F)
197636.1 C (97.0 F)
197737.2 C (99.0 F)
197835.6 C (96.1 F)
197933.3 C (91.9 F)
198038.3 C (100.9 F)
198134.4 C (93.9 F)
198233.9 C (93.0 F)
198337.2 C (99.0 F)
198436.1 C (97.0 F)
198534.4 C (93.9 F)
198635.6 C (96.1 F)
198739.4 C (102.9 F)
198841.7 C (107.1 F)
198936.7 C (98.1 F)
199037.2 C (99.0 F)
199137.8 C (100.0 F)
199233.9 C (93.0 F)
199333.9 C (93.0 F)
199435.6 C (96.1 F)
199538.9 C (102.0 F)
199635.0 C (95.0 F)
199736.7 C (98.1 F)
199837.2 C (99.0 F)
199938.9 C (102.0 F)
200035.6 C (96.1 F)
200135.0 C (95.0 F)
200236.7 C (98.1 F)
200336.1 C (97.0 F)
200433.3 C (91.9 F)
200536.1 C (97.0 F)
200634.4 C (93.9 F)
200734.4 C (93.9 F)
200831.1 C (88.0 F)
200933.9 C (93.0 F)
201034.4 C (93.9 F)
201137.8 C (100.0 F)
201238.3 C (100.9 F)
201335.6 C (96.1 F)
201432.8 C (91.0 F)
201533.3 C (91.9 F)
201634.4 C (93.9 F)
201736.7 C (98.1 F)
201837.2 C (99.0 F)
201934.4 C (93.9 F)
202034.4 C (93.9 F)
202134.4 C (93.9 F)
202236.7 C (98.1 F)
202335.0 C (95.0 F)
202435.6 C (96.1 F)
202533.9 C (93.0 F)
202635.0 C (95.0 F)

Coldest night (TNn)

Coldest night (TNn) at Kankakee Wwtp by year The coldest night of the year at Kankakee Wwtp, 1948 to 2026. The record is -33.9 C (-29.0 F) in 1985, marked on the chart; the median year is -22.8 C (-9.0 F). -35-30-25-20-151960198020002020Record: -33.9 C (-29.0 F) in 1985
The coldest night of the year at Kankakee Wwtp, 1948 to 2026. The record is -33.9 C (-29.0 F) in 1985, marked on the chart; the median year is -22.8 C (-9.0 F).
Coldest night (TNn) at Kankakee Wwtp by year
YearColdest night (TNn)
1948n/a
1949n/a
1950n/a
1951n/a
1973-21.7 C (-7.1 F)
1974-23.9 C (-11.0 F)
1975-17.8 C (0.0 F)
1976-23.9 C (-11.0 F)
1977-28.3 C (-18.9 F)
1978-21.7 C (-7.1 F)
1979-29.4 C (-20.9 F)
1980-20.0 C (-4.0 F)
1981-23.3 C (-9.9 F)
1982-31.7 C (-25.1 F)
1983-32.2 C (-26.0 F)
1984-30.0 C (-22.0 F)
1985-33.9 C (-29.0 F)
1986-22.2 C (-8.0 F)
1987-23.3 C (-9.9 F)
1988-24.4 C (-11.9 F)
1989-28.3 C (-18.9 F)
1990-20.6 C (-5.1 F)
1991-19.4 C (-2.9 F)
1992-25.6 C (-14.1 F)
1993-21.7 C (-7.1 F)
1994-30.0 C (-22.0 F)
1995-21.7 C (-7.1 F)
1996-27.2 C (-17.0 F)
1997-23.9 C (-11.0 F)
1998-17.2 C (1.0 F)
1999-30.0 C (-22.0 F)
2000-25.0 C (-13.0 F)
2001-20.6 C (-5.1 F)
2002-21.7 C (-7.1 F)
2003-21.7 C (-7.1 F)
2004-22.8 C (-9.0 F)
2005-19.4 C (-2.9 F)
2006-19.4 C (-2.9 F)
2007-22.8 C (-9.0 F)
2008-21.7 C (-7.1 F)
2009-28.3 C (-18.9 F)
2010-17.2 C (1.0 F)
2011-24.4 C (-11.9 F)
2012-15.6 C (3.9 F)
2013-20.0 C (-4.0 F)
2014-26.7 C (-16.1 F)
2015-22.8 C (-9.0 F)
2016-21.7 C (-7.1 F)
2017-21.7 C (-7.1 F)
2018-27.2 C (-17.0 F)
2019-30.0 C (-22.0 F)
2020-21.7 C (-7.1 F)
2021-22.8 C (-9.0 F)
2022-22.8 C (-9.0 F)
2023-16.7 C (1.9 F)
2024-25.0 C (-13.0 F)
2025-22.2 C (-8.0 F)
2026-22.2 C (-8.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Kankakee Wwtp by year The wettest day of the year at Kankakee Wwtp, 1948 to 2026. The record is 148.6 mm (5.9 in) in 2012, marked on the chart; the median year is 71.0 mm (2.8 in). 0501001501960198020002020Record: 148.6 mm (5.9 in) in 2012
The wettest day of the year at Kankakee Wwtp, 1948 to 2026. The record is 148.6 mm (5.9 in) in 2012, marked on the chart; the median year is 71.0 mm (2.8 in).
Wettest day (Rx1day) at Kankakee Wwtp by year
YearWettest day (Rx1day)
194825.7 mm (1.0 in)
194979.2 mm (3.1 in)
195051.8 mm (2.0 in)
195178.7 mm (3.1 in)
197384.8 mm (3.3 in)
197490.2 mm (3.6 in)
1975118.1 mm (4.6 in)
197653.8 mm (2.1 in)
197771.4 mm (2.8 in)
1978135.9 mm (5.4 in)
197951.1 mm (2.0 in)
198098.6 mm (3.9 in)
198173.7 mm (2.9 in)
198292.7 mm (3.6 in)
198375.7 mm (3.0 in)
198443.2 mm (1.7 in)
198557.9 mm (2.3 in)
198657.7 mm (2.3 in)
198781.3 mm (3.2 in)
198833.0 mm (1.3 in)
198987.4 mm (3.4 in)
199085.3 mm (3.4 in)
199150.8 mm (2.0 in)
199281.3 mm (3.2 in)
199361.0 mm (2.4 in)
1994109.2 mm (4.3 in)
199567.1 mm (2.6 in)
199674.9 mm (2.9 in)
199767.1 mm (2.6 in)
199862.2 mm (2.4 in)
199951.3 mm (2.0 in)
2000110.7 mm (4.4 in)
200149.0 mm (1.9 in)
200249.0 mm (1.9 in)
200371.6 mm (2.8 in)
200482.0 mm (3.2 in)
200551.3 mm (2.0 in)
2006100.3 mm (3.9 in)
200753.3 mm (2.1 in)
200870.6 mm (2.8 in)
200981.3 mm (3.2 in)
201076.2 mm (3.0 in)
201166.0 mm (2.6 in)
2012148.6 mm (5.9 in)
201386.4 mm (3.4 in)
201464.5 mm (2.5 in)
201587.4 mm (3.4 in)
201678.2 mm (3.1 in)
201765.8 mm (2.6 in)
201855.4 mm (2.2 in)
201969.3 mm (2.7 in)
202099.3 mm (3.9 in)
202177.5 mm (3.1 in)
202256.4 mm (2.2 in)
202365.5 mm (2.6 in)
202443.7 mm (1.7 in)
202545.7 mm (1.8 in)
202649.3 mm (1.9 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Kankakee Wwtp by year The wettest five days of the year at Kankakee Wwtp, 1948 to 2026. The record is 168.6 mm (6.6 in) in 1996, marked on the chart; the median year is 100.7 mm (4.0 in). 0501001502001960198020002020Record: 168.6 mm (6.6 in) in 1996
The wettest five days of the year at Kankakee Wwtp, 1948 to 2026. The record is 168.6 mm (6.6 in) in 1996, marked on the chart; the median year is 100.7 mm (4.0 in).
Wettest five days (Rx5day) at Kankakee Wwtp by year
YearWettest five days (Rx5day)
194841.9 mm (1.6 in)
1949104.7 mm (4.1 in)
195067.1 mm (2.6 in)
195180.2 mm (3.2 in)
1973127.0 mm (5.0 in)
1974112.6 mm (4.4 in)
1975120.1 mm (4.7 in)
1976103.0 mm (4.1 in)
1977146.8 mm (5.8 in)
1978141.2 mm (5.6 in)
1979103.9 mm (4.1 in)
1980120.2 mm (4.7 in)
198191.0 mm (3.6 in)
1982111.5 mm (4.4 in)
198399.1 mm (3.9 in)
198485.3 mm (3.4 in)
1985107.4 mm (4.2 in)
1986114.6 mm (4.5 in)
1987101.1 mm (4.0 in)
198855.2 mm (2.2 in)
1989105.7 mm (4.2 in)
1990104.1 mm (4.1 in)
199187.7 mm (3.5 in)
1992112.5 mm (4.4 in)
199394.3 mm (3.7 in)
1994113.0 mm (4.4 in)
199599.6 mm (3.9 in)
1996168.6 mm (6.6 in)
199773.2 mm (2.9 in)
1998114.3 mm (4.5 in)
1999100.6 mm (4.0 in)
2000117.6 mm (4.6 in)
200172.1 mm (2.8 in)
2002100.8 mm (4.0 in)
2003128.3 mm (5.1 in)
2004107.4 mm (4.2 in)
200557.9 mm (2.3 in)
2006102.6 mm (4.0 in)
200778.0 mm (3.1 in)
200883.5 mm (3.3 in)
2009128.5 mm (5.1 in)
201091.2 mm (3.6 in)
201178.5 mm (3.1 in)
2012148.6 mm (5.9 in)
201394.8 mm (3.7 in)
201470.1 mm (2.8 in)
201587.1 mm (3.4 in)
201677.5 mm (3.1 in)
201772.9 mm (2.9 in)
201864.6 mm (2.5 in)
2019121.9 mm (4.8 in)
2020103.1 mm (4.1 in)
202198.8 mm (3.9 in)
202267.8 mm (2.7 in)
202367.8 mm (2.7 in)
202469.1 mm (2.7 in)
202570.6 mm (2.8 in)
2026134.2 mm (5.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Kankakee Wwtp by year The longest dry spell of the year at Kankakee Wwtp, 1948 to 2026. The record is 33 days in 1979, marked on the chart; the median year is 18 days. 102030401960198020002020Record: 33 days in 1979
The longest dry spell of the year at Kankakee Wwtp, 1948 to 2026. The record is 33 days in 1979, marked on the chart; the median year is 18 days.
Longest dry spell (CDD) at Kankakee Wwtp by year
YearLongest dry spell (CDD)
194825 days
194921 days
195030 days
195111 days
197314 days
197417 days
197514 days
197625 days
197712 days
197816 days
197933 days
198023 days
198125 days
198218 days
198327 days
198415 days
198513 days
198625 days
198729 days
198822 days
198924 days
199017 days
199131 days
199215 days
199320 days
199417 days
199529 days
199619 days
199717 days
199818 days
199925 days
200019 days
200119 days
200218 days
200315 days
200420 days
200520 days
200616 days
200719 days
200824 days
200916 days
201022 days
201116 days
201215 days
201316 days
201412 days
201518 days
201613 days
201732 days
201818 days
201911 days
202013 days
202114 days
202222 days
202321 days
202425 days
202517 days
202614 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

46 years with a frost

Across 46 years with a frost, the median last spring frost at Kankakee Wwtp falls on 20 April and the median first autumn frost on 15 October, which leaves a median of 178 days between them.

Fitted over all years, the growing season changes by +3.8 days per decade at this station.

Frost dates and growing season at Kankakee Wwtp
MeasureMedian, all yearsEarliest periodRecent period (1991 to 2025)Recent against earliestFitted trend
Last spring frost20 Apriln/a20 Apriln/a-0.4 days per decade
First autumn frost15 Octobern/a16 Octobern/a+3.4 days per decade
Growing days178 daysn/a179 daysn/a+3.8 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

41 years, 1949 to 2025

A day with at least 68.4 mm (2.7 in) of rain is expected about once in 2 years. A day with at least 162.2 mm (6.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Kankakee Wwtp: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years68.4 mm (2.7 in)
5 years91.5 mm (3.6 in)
10 years107.5 mm (4.2 in)
25 years128.7 mm (5.1 in)
50 years145.2 mm (5.7 in)Longer than the 41 years of record
100 years162.2 mm (6.4 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 1949 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: 148.6 mm (5.9 in) in 2012; 135.9 mm (5.4 in) in 1978; 118.1 mm (4.6 in) in 1975.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

  • Data for Kankakee Wwtp standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Kankakee Wwtp 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 (2026-10-17).