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Indiana Dunes Np Weather Records (USC00124244)

Record envelope, standing records and threshold days for Indiana Dunes Np (USC00124244), Indiana, United States, with 38 years of record.

Key Facts for Indiana Dunes Np

  • Indiana Dunes Np (USC00124244) is a weather station in Indiana, United States at 41.63 latitude and -87.09 longitude, 208 m (683 ft) above sea level.
  • The station reports from 1989 to 2026, 38 years of record.
  • 1,464 records set at Indiana Dunes Np still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Indiana Dunes Np set a daily record high maximum temperature of 32.2 C (90.0 F) on 13 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Indiana, United States, 41.63 latitude, -87.09 longitude.
  • Elevation: 208 m (683 ft).
  • Period of record: 1989 to 2026, 38 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

22 days at or beyond a record
Daily record high and record low at Indiana Dunes Np, with 2026 drawn through them The band shows the record high and record low for each calendar day at Indiana Dunes Np. The lines show the 2026 daily maximum and minimum. 22 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 Indiana Dunes Np. The lines show the 2026 daily maximum and minimum. 22 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Indiana Dunes Np, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan18.9 C (66.0 F)-30.0 C (-22.0 F)18.9 C (66.0 F)-17.8 C (0.0 F)
Feb23.3 C (73.9 F)-26.1 C (-15.0 F)20.6 C (69.1 F)-10.0 C (14.0 F)
Mar29.4 C (84.9 F)-20.0 C (-4.0 F)28.9 C (84.0 F)-6.7 C (19.9 F)
Apr31.1 C (88.0 F)-7.8 C (18.0 F)29.4 C (84.9 F)0.6 C (33.1 F)
May35.0 C (95.0 F)-1.1 C (30.0 F)31.1 C (88.0 F)0.0 C (32.0 F)
Jun36.7 C (98.1 F)2.8 C (37.0 F)33.9 C (93.0 F)10.6 C (51.1 F)
Jul38.9 C (102.0 F)7.2 C (45.0 F)36.1 C (97.0 F)13.3 C (55.9 F)
Aug36.7 C (98.1 F)7.2 C (45.0 F)31.1 C (88.0 F)11.1 C (52.0 F)
Sep35.6 C (96.1 F)1.7 C (35.1 F)34.4 C (93.9 F)3.9 C (39.0 F)
Oct31.7 C (89.1 F)-5.0 C (23.0 F)20.0 C (68.0 F)16.7 C (62.1 F)
Nov25.0 C (77.0 F)-13.9 C (7.0 F)n/an/a
Dec20.6 C (69.1 F)-28.3 C (-18.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Indiana Dunes Np by the year they were set 1,464 records at Indiana Dunes Np still stand. 1991 holds the most, with 70. 0204060801989: 411990: 631991: 701992: 481993: 381994: 411995: 411996: 591997: 441998: 361999: 392000: 422001: 322002: 452003: 192004: 312005: 392006: 342007: 382008: 252009: 312010: 302011: 312012: 482013: 332014: 612015: 472016: 262017: 462018: 342019: 182020: 92021: 112022: 482023: 322024: 512025: 502026: 331989199319972001200520092013201720212025
1,464 records at Indiana Dunes Np still stand. 1991 holds the most, with 70.
Standing records at Indiana Dunes Np by the year they were set
Year setStanding records
198941
199063
199170
199248
199338
199441
199541
199659
199744
199836
199939
200042
200132
200245
200319
200431
200539
200634
200738
200825
200931
201030
201131
201248
201333
201461
201547
201626
201746
201834
201918
20209
202111
202248
202332
202451
202550
202633

All-Time Record Progression

1 new records
When Indiana Dunes Np set new all-time records 1 all-time records were set at Indiana Dunes Np between 31 January 2019 and 31 January 2019. Each dot is a new record. Record low minimum temperature31 January 2019: Record low minimum temperature -30.0 C (-22.0 F)2020
1 all-time records were set at Indiana Dunes Np between 31 January 2019 and 31 January 2019. Each dot is a new record.
When Indiana Dunes Np set new all-time records
DateKindDetail
2019-01-31Record low minimum temperatureRecord low minimum temperature -30.0 C (-22.0 F)

Wettest Day of Each Month

Aug: 197.1 mm (7.8 in)
Record daily precipitation for each month at Indiana Dunes Np The wettest day on record for each calendar month at Indiana Dunes Np. The most was 197.1 mm (7.8 in) on 18 August 1990. 050100150200 Jan: 84.3 mm (3.3 in), 8 January 2008 Jan Feb: 46.7 mm (1.8 in), 21 February 1997 Feb Mar: 67.1 mm (2.6 in), 1 March 2017 Mar Apr: 51.8 mm (2.0 in), 25 April 2007 Apr May: 145.0 mm (5.7 in), 10 May 1996 May Jun: 138.4 mm (5.4 in), 14 June 1994 Jun Jul: 106.7 mm (4.2 in), 18 July 1996 Jul Aug: 197.1 mm (7.8 in), 18 August 1990 Aug Sep: 120.7 mm (4.8 in), 13 September 2008 Sep Oct: 94.0 mm (3.7 in), 26 October 2022 Oct Nov: 98.3 mm (3.9 in), 28 November 1990 Nov Dec: 41.1 mm (1.6 in), 7 December 1998 Dec
The wettest day on record for each calendar month at Indiana Dunes Np. The most was 197.1 mm (7.8 in) on 18 August 1990.
Record daily precipitation for each month at Indiana Dunes Np
MonthRecord daily precipitation (mm)Date
Jan84.3 mm (3.3 in)8 January 2008
Feb46.7 mm (1.8 in)21 February 1997
Mar67.1 mm (2.6 in)1 March 2017
Apr51.8 mm (2.0 in)25 April 2007
May145.0 mm (5.7 in)10 May 1996
Jun138.4 mm (5.4 in)14 June 1994
Jul106.7 mm (4.2 in)18 July 1996
Aug197.1 mm (7.8 in)18 August 1990
Sep120.7 mm (4.8 in)13 September 2008
Oct94.0 mm (3.7 in)26 October 2022
Nov98.3 mm (3.9 in)28 November 1990
Dec41.1 mm (1.6 in)7 December 1998

Period of Record Coverage

1989 to 2026
Days with data per year at Indiana Dunes Np 38 years of record at Indiana Dunes Np, 1989 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1989, 2003, 2018, 2019, 2020, 2021, 2026. 1989: 214 of 365 days1990: 365 of 365 days1991: 364 of 365 days1992: 365 of 366 days1993: 362 of 365 days1994: 364 of 365 days1995: 364 of 365 days1996: 365 of 366 days1997: 365 of 365 days1998: 364 of 365 days1999: 365 of 365 days2000: 363 of 366 days2001: 361 of 365 days2002: 362 of 365 days2003: 303 of 365 days2004: 364 of 366 days2005: 365 of 365 days2006: 364 of 365 days2007: 365 of 365 days2008: 361 of 366 days2009: 363 of 365 days2010: 363 of 365 days2011: 363 of 365 days2012: 366 of 366 days2013: 363 of 365 days2014: 362 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 256 of 365 days2019: 179 of 365 days2020: 184 of 366 days2021: 203 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 366 of 366 days2025: 356 of 365 days2026: 240 of 365 days19901995200020052010201520202025
38 years of record at Indiana Dunes Np, 1989 to 2026. 7 years have data for under 90 percent of days and are left out of rankings: 1989, 2003, 2018, 2019, 2020, 2021, 2026.
Days with data per year at Indiana Dunes Np
YearDays with dataShare of yearComplete
198921459%No
1990365100%Yes
1991364100%Yes
1992365100%Yes
199336299%Yes
1994364100%Yes
1995364100%Yes
1996365100%Yes
1997365100%Yes
1998364100%Yes
1999365100%Yes
200036399%Yes
200136199%Yes
200236299%Yes
200330383%No
200436499%Yes
2005365100%Yes
2006364100%Yes
2007365100%Yes
200836199%Yes
200936399%Yes
201036399%Yes
201136399%Yes
2012366100%Yes
201336399%Yes
201436299%Yes
2015365100%Yes
2016366100%Yes
2017364100%Yes
201825670%No
201917949%No
202018450%No
202120356%No
2022364100%Yes
2023365100%Yes
2024366100%Yes
202535698%Yes
202624066%No

Latest Records

20
Latest records at Indiana Dunes Np
DateStationRecordValueBeat old record byOld record stoodSignificance
13 September 2026Indiana Dunes Np, USdaily high max (Provisional)32.2 C (90.0 F)0.5 C (0.9 F)28 years12 of 100 (Routine)
13 September 2026Indiana Dunes Np, USdaily high min (Provisional)21.1 C (70.0 F)0.5 C (0.9 F)7 years6 of 100 (Routine)
6 September 2026Indiana Dunes Np, USdaily high min (Tie, Provisional)21.7 C (71.1 F)tie21 years2 of 100 (Routine)
1 September 2026Indiana Dunes Np, USdaily high max (Provisional)34.4 C (93.9 F)1.6 C (2.9 F)25 years13 of 100 (Routine)
28 July 2026Indiana Dunes Np, USdaily high max (Tie)32.2 C (90.0 F)tie36 years3 of 100 (Routine)
27 July 2026Indiana Dunes Np, USdaily high min25.0 C (77.0 F)1.7 C (3.1 F)0 years8 of 100 (Routine)
3 July 2026Indiana Dunes Np, USdaily high max36.1 C (97.0 F)2.8 C (5.0 F)15 years14 of 100 (Routine)
2 July 2026Indiana Dunes Np, USdaily high min24.4 C (75.9 F)2.2 C (4.0 F)28 years17 of 100 (Routine)
2 July 2026Indiana Dunes Np, USdaily high max35.6 C (96.1 F)1.2 C (2.2 F)35 years16 of 100 (Routine)
1 July 2026Indiana Dunes Np, USdaily high min25.6 C (78.1 F)3.9 C (7.0 F)24 years21 of 100 (Routine)
1 July 2026Indiana Dunes Np, USdaily high max35.6 C (96.1 F)2.8 C (5.0 F)20 years16 of 100 (Routine)
30 June 2026Indiana Dunes Np, USdaily high min25.6 C (78.1 F)1.7 C (3.1 F)35 years17 of 100 (Routine)
29 June 2026Indiana Dunes Np, USdaily high min24.4 C (75.9 F)2.2 C (4.0 F)13 years12 of 100 (Routine)
22 June 2026Indiana Dunes Np, USdaily rain71.1 mm (2.8 in)47.0 mm (1.9 in)12 years38 of 100 (Notable)
12 June 2026Indiana Dunes Np, USdaily rain46.5 mm (1.8 in)14.0 mm (0.6 in)21 years18 of 100 (Routine)
11 June 2026Indiana Dunes Np, USdaily high max33.9 C (93.0 F)1.1 C (2.0 F)11 years8 of 100 (Routine)
10 June 2026Indiana Dunes Np, USdaily high max32.8 C (91.0 F)1.7 C (3.1 F)27 years14 of 100 (Routine)
9 June 2026Indiana Dunes Np, USdaily high min (Tie)22.2 C (72.0 F)tie21 years2 of 100 (Routine)
5 June 2026Indiana Dunes Np, USdaily high min20.6 C (69.1 F)0.6 C (1.1 F)20 years10 of 100 (Routine)
5 June 2026Indiana Dunes Np, USdaily high max31.1 C (88.0 F)0.5 C (0.9 F)15 years7 of 100 (Routine)

Climate Trend

31 complete years, 1990 to 2025
Annual mean temperature at Indiana Dunes Np as warming stripes, 1990 to 2025 One stripe for each of 31 complete years at Indiana Dunes Np, 1990 to 2025. Blue stripes are years cooler than the station's own mean of 10.3 C (50.5 F); red stripes are warmer. The coolest year was 2014, at 8.1 C (46.5 F), and the warmest was 2025, at 12.3 C (54.2 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1990: 10.6 C, +0.3 C from the station mean1991: 10.6 C, +0.4 C from the station mean1992: 9.1 C, -1.1 C from the station mean1993: 9.2 C, -1.1 C from the station mean1994: 9.5 C, -0.7 C from the station mean1995: 9.6 C, -0.6 C from the station mean1996: 8.6 C, -1.6 C from the station mean1997: 9.1 C, -1.1 C from the station mean1998: 11.8 C, +1.5 C from the station mean1999: 10.9 C, +0.6 C from the station mean2000: 10.1 C, -0.2 C from the station mean2001: 10.7 C, +0.4 C from the station mean2002: 10.5 C, +0.2 C from the station mean2004: 9.9 C, -0.3 C from the station mean2005: 10.6 C, +0.3 C from the station mean2006: 10.9 C, +0.6 C from the station mean2007: 10.6 C, +0.4 C from the station mean2008: 9.5 C, -0.8 C from the station mean2009: 9.4 C, -0.9 C from the station mean2010: 10.6 C, +0.4 C from the station mean2011: 10.1 C, -0.1 C from the station mean2012: 11.5 C, +1.2 C from the station mean2013: 9.3 C, -1.0 C from the station mean2014: 8.1 C, -2.2 C from the station mean2015: 10.1 C, -0.1 C from the station mean2016: 11.3 C, +1.1 C from the station mean2017: 10.9 C, +0.7 C from the station mean2022: 9.5 C, -0.7 C from the station mean2023: 10.8 C, +0.5 C from the station mean2024: 12.1 C, +1.8 C from the station mean2025: 12.3 C, +2.1 C from the station mean19901995200020052010201520202025
One stripe for each of 31 complete years at Indiana Dunes Np, 1990 to 2025. Blue stripes are years cooler than the station's own mean of 10.3 C (50.5 F); red stripes are warmer. The coolest year was 2014, at 8.1 C (46.5 F), and the warmest was 2025, at 12.3 C (54.2 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Indiana Dunes Np as warming stripes, 1990 to 2025
YearAnnual mean temperatureDifference from the station mean
199010.6 C+0.30 C
199110.6 C+0.38 C
19929.1 C-1.13 C
19939.2 C-1.05 C
19949.5 C-0.72 C
19959.6 C-0.64 C
19968.6 C-1.62 C
19979.1 C-1.12 C
199811.8 C+1.55 C
199910.9 C+0.60 C
200010.1 C-0.20 C
200110.7 C+0.43 C
200210.5 C+0.22 C
20049.9 C-0.33 C
200510.6 C+0.35 C
200610.9 C+0.63 C
200710.6 C+0.39 C
20089.5 C-0.76 C
20099.4 C-0.86 C
201010.6 C+0.36 C
201110.1 C-0.14 C
201211.5 C+1.22 C
20139.3 C-0.98 C
20148.1 C-2.18 C
201510.1 C-0.12 C
201611.3 C+1.07 C
201710.9 C+0.69 C
20229.5 C-0.71 C
202310.8 C+0.52 C
202412.1 C+1.83 C
202512.3 C+2.06 C

The fitted trend in annual mean temperature here over 1990 to 2025 is 0.34 C (0.00 to 0.68) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.61 F (0.00 to 1.23) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Indiana Dunes Np
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.34 C (0.00 to 0.68) per decade0.61 F (0.00 to 1.23) per decade1990 to 202531Not clearly different from zero
Mean daily maximum0.5 C (0.1 to 0.8) per decade0.8 F (0.2 to 1.5) per decade1990 to 202531Rise
Mean daily minimum0.2 C (-0.1 to 0.6) per decade0.4 F (-0.2 to 1.0) per decade1990 to 202531Not clearly different from zero

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

1989 to 2026
Yearly extremes at Indiana Dunes Np: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)199934.4 C (93.9 F)38
Coldest night (TNn)-30.0 C (-22.0 F)2019-21.4 C (-6.5 F)38
Wettest day (Rx1day)197.1 mm (7.8 in)199067.6 mm (2.7 in)38
Wettest five days (Rx5day)273.6 mm (10.8 in)200895.5 mm (3.8 in)38
Longest dry spell (CDD)25 days199917 days38

Hottest day (TXx)

Hottest day (TXx) at Indiana Dunes Np by year The hottest day of the year at Indiana Dunes Np, 1989 to 2026. The record is 38.9 C (102.0 F) in 1999, marked on the chart; the median year is 34.4 C (93.9 F). 32343638401990200020102020Record: 38.9 C (102.0 F) in 1999
The hottest day of the year at Indiana Dunes Np, 1989 to 2026. The record is 38.9 C (102.0 F) in 1999, marked on the chart; the median year is 34.4 C (93.9 F).
Hottest day (TXx) at Indiana Dunes Np by year
YearHottest day (TXx)
198935.6 C (96.1 F)
199035.6 C (96.1 F)
199137.8 C (100.0 F)
199233.9 C (93.0 F)
199333.3 C (91.9 F)
199432.8 C (91.0 F)
199537.8 C (100.0 F)
199633.3 C (91.9 F)
199735.6 C (96.1 F)
199834.4 C (93.9 F)
199938.9 C (102.0 F)
200033.9 C (93.0 F)
200134.4 C (93.9 F)
200236.1 C (97.0 F)
200334.4 C (93.9 F)
200432.2 C (90.0 F)
200536.7 C (98.1 F)
200634.4 C (93.9 F)
200733.9 C (93.0 F)
200832.8 C (91.0 F)
200933.3 C (91.9 F)
201033.9 C (93.0 F)
201136.1 C (97.0 F)
201237.8 C (100.0 F)
201335.6 C (96.1 F)
201432.2 C (90.0 F)
201533.3 C (91.9 F)
201633.3 C (91.9 F)
201733.9 C (93.0 F)
201835.0 C (95.0 F)
201933.9 C (93.0 F)
202034.4 C (93.9 F)
202135.6 C (96.1 F)
202235.6 C (96.1 F)
202335.6 C (96.1 F)
202435.0 C (95.0 F)
202535.6 C (96.1 F)
202636.1 C (97.0 F)

Coldest night (TNn)

Coldest night (TNn) at Indiana Dunes Np by year The coldest night of the year at Indiana Dunes Np, 1989 to 2026. The record is -30.0 C (-22.0 F) in 2019, marked on the chart; the median year is -21.4 C (-6.5 F). -30-25-20-15-101990200020102020Record: -30.0 C (-22.0 F) in 2019
The coldest night of the year at Indiana Dunes Np, 1989 to 2026. The record is -30.0 C (-22.0 F) in 2019, marked on the chart; the median year is -21.4 C (-6.5 F).
Coldest night (TNn) at Indiana Dunes Np by year
YearColdest night (TNn)
1989-28.3 C (-18.9 F)
1990-20.0 C (-4.0 F)
1991-20.0 C (-4.0 F)
1992-23.3 C (-9.9 F)
1993-18.9 C (-2.0 F)
1994-29.4 C (-20.9 F)
1995-20.0 C (-4.0 F)
1996-26.1 C (-15.0 F)
1997-22.8 C (-9.0 F)
1998-15.0 C (5.0 F)
1999-28.3 C (-18.9 F)
2000-22.8 C (-9.0 F)
2001-17.2 C (1.0 F)
2002-20.0 C (-4.0 F)
2003-20.0 C (-4.0 F)
2004-22.8 C (-9.0 F)
2005-21.1 C (-6.0 F)
2006-17.2 C (1.0 F)
2007-22.8 C (-9.0 F)
2008-21.7 C (-7.1 F)
2009-28.3 C (-18.9 F)
2010-17.8 C (0.0 F)
2011-23.9 C (-11.0 F)
2012-14.4 C (6.1 F)
2013-20.6 C (-5.1 F)
2014-26.1 C (-15.0 F)
2015-23.9 C (-11.0 F)
2016-23.9 C (-11.0 F)
2017-18.9 C (-2.0 F)
2018-25.0 C (-13.0 F)
2019-30.0 C (-22.0 F)
2020-12.2 C (10.0 F)
2021-15.6 C (3.9 F)
2022-26.7 C (-16.1 F)
2023-20.0 C (-4.0 F)
2024-26.7 C (-16.1 F)
2025-19.4 C (-2.9 F)
2026-17.8 C (0.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Indiana Dunes Np by year The wettest day of the year at Indiana Dunes Np, 1989 to 2026. The record is 197.1 mm (7.8 in) in 1990, marked on the chart; the median year is 67.6 mm (2.7 in). 0501001502001990200020102020Record: 197.1 mm (7.8 in) in 1990
The wettest day of the year at Indiana Dunes Np, 1989 to 2026. The record is 197.1 mm (7.8 in) in 1990, marked on the chart; the median year is 67.6 mm (2.7 in).
Wettest day (Rx1day) at Indiana Dunes Np by year
YearWettest day (Rx1day)
198969.3 mm (2.7 in)
1990197.1 mm (7.8 in)
199157.2 mm (2.3 in)
199285.1 mm (3.4 in)
199398.0 mm (3.9 in)
1994138.4 mm (5.4 in)
199566.0 mm (2.6 in)
1996145.0 mm (5.7 in)
199747.8 mm (1.9 in)
199867.6 mm (2.7 in)
199942.7 mm (1.7 in)
200075.4 mm (3.0 in)
200166.5 mm (2.6 in)
200257.9 mm (2.3 in)
200340.9 mm (1.6 in)
200459.4 mm (2.3 in)
200532.8 mm (1.3 in)
200664.5 mm (2.5 in)
200787.9 mm (3.5 in)
2008120.7 mm (4.8 in)
200963.0 mm (2.5 in)
201087.6 mm (3.4 in)
201188.9 mm (3.5 in)
201268.6 mm (2.7 in)
201367.6 mm (2.7 in)
201493.7 mm (3.7 in)
201567.8 mm (2.7 in)
201652.6 mm (2.1 in)
201767.1 mm (2.6 in)
201876.5 mm (3.0 in)
201993.2 mm (3.7 in)
202031.5 mm (1.2 in)
202160.7 mm (2.4 in)
202294.0 mm (3.7 in)
202338.9 mm (1.5 in)
202452.3 mm (2.1 in)
202529.0 mm (1.1 in)
202671.1 mm (2.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Indiana Dunes Np by year The wettest five days of the year at Indiana Dunes Np, 1989 to 2026. The record is 273.6 mm (10.8 in) in 2008, marked on the chart; the median year is 95.5 mm (3.8 in). 01002003001990200020102020Record: 273.6 mm (10.8 in) in 2008
The wettest five days of the year at Indiana Dunes Np, 1989 to 2026. The record is 273.6 mm (10.8 in) in 2008, marked on the chart; the median year is 95.5 mm (3.8 in).
Wettest five days (Rx5day) at Indiana Dunes Np by year
YearWettest five days (Rx5day)
198991.4 mm (3.6 in)
1990224.5 mm (8.8 in)
1991101.2 mm (4.0 in)
199292.2 mm (3.6 in)
1993176.2 mm (6.9 in)
1994154.4 mm (6.1 in)
199577.8 mm (3.1 in)
1996157.4 mm (6.2 in)
199773.3 mm (2.9 in)
199881.3 mm (3.2 in)
199959.0 mm (2.3 in)
2000155.9 mm (6.1 in)
2001119.4 mm (4.7 in)
2002109.5 mm (4.3 in)
200377.7 mm (3.1 in)
200497.8 mm (3.9 in)
200554.7 mm (2.2 in)
200683.1 mm (3.3 in)
2007130.6 mm (5.1 in)
2008273.6 mm (10.8 in)
200997.0 mm (3.8 in)
2010101.8 mm (4.0 in)
2011105.6 mm (4.2 in)
2012104.7 mm (4.1 in)
201390.0 mm (3.5 in)
2014104.9 mm (4.1 in)
201597.3 mm (3.8 in)
2016113.3 mm (4.5 in)
201792.5 mm (3.6 in)
201828.7 mm (1.1 in)
201993.2 mm (3.7 in)
202010.4 mm (0.4 in)
202126.4 mm (1.0 in)
202294.0 mm (3.7 in)
202341.4 mm (1.6 in)
202476.2 mm (3.0 in)
202551.1 mm (2.0 in)
2026117.4 mm (4.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Indiana Dunes Np by year The longest dry spell of the year at Indiana Dunes Np, 1989 to 2026. The record is 25 days in 1999, marked on the chart; the median year is 17 days. 5101520251990200020102020Record: 25 days in 1999
The longest dry spell of the year at Indiana Dunes Np, 1989 to 2026. The record is 25 days in 1999, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Indiana Dunes Np by year
YearLongest dry spell (CDD)
198916 days
199017 days
199123 days
199215 days
199320 days
199413 days
199517 days
199623 days
199723 days
199820 days
199925 days
200018 days
200119 days
200214 days
200325 days
200417 days
200524 days
200616 days
200714 days
200814 days
200922 days
201012 days
201112 days
201215 days
201316 days
201413 days
201520 days
201617 days
201718 days
201813 days
201911 days
202017 days
20219 days
202210 days
202318 days
202422 days
202519 days
202612 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

31 years with a frost

Across 31 years with a frost, the median last spring frost at Indiana Dunes Np falls on 22 April and the median first autumn frost on 25 October, which leaves a median of 188 days between them.

Fitted over all years, the growing season changes by +5.3 days per decade at this station.

Frost dates and growing season at Indiana Dunes Np
MeasureMedian, all yearsEarliest periodRecent period (1991 to 2025)Recent against earliestFitted trend
Last spring frost22 Apriln/a23 Apriln/a-1.5 days per decade
First autumn frost25 Octobern/a26 Octobern/a+3.8 days per decade
Growing days188 daysn/a187 daysn/a+5.3 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.

Download the Data

  • Data for Indiana Dunes Np standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Indiana Dunes Np 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-13).