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Built 2026-10-18 (18 October 2026)

Chicago Heights Weather Records (USC00111527)

Record envelope, standing records and threshold days for Chicago Heights (USC00111527), Illinois, United States, with 52 years of record.

Key Facts for Chicago Heights

  • Chicago Heights (USC00111527) is a weather station in Illinois, United States at 41.50 latitude and -87.63 longitude, 192 m (630 ft) above sea level.
  • The station reports from 1901 to 1952, 52 years of record.
  • 1,464 records set at Chicago Heights still stand.
  • Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

  • Location: Illinois, United States, 41.50 latitude, -87.63 longitude.
  • Elevation: 192 m (630 ft).
  • Period of record: 1901 to 1952, 52 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Chicago Heights, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chicago Heights. 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 Chicago Heights. 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 Chicago Heights, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan15.6 C (60.1 F)-28.3 C (-18.9 F)n/an/a
Feb13.3 C (55.9 F)-27.2 C (-17.0 F)n/an/a
Mar24.4 C (75.9 F)-17.8 C (0.0 F)n/an/a
Apr31.7 C (89.1 F)-6.7 C (19.9 F)n/an/a
May33.9 C (93.0 F)-2.2 C (28.0 F)n/an/a
Jun35.6 C (96.1 F)1.1 C (34.0 F)n/an/a
Jul37.8 C (100.0 F)6.7 C (44.1 F)n/an/a
Aug40.0 C (104.0 F)5.6 C (42.1 F)n/an/a
Sep39.4 C (102.9 F)0.0 C (32.0 F)n/an/a
Oct31.7 C (89.1 F)-3.3 C (26.1 F)n/an/a
Nov26.7 C (80.1 F)-21.7 C (-7.1 F)n/an/a
Dec17.2 C (63.0 F)-16.7 C (1.9 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chicago Heights by the year they were set 1,464 records at Chicago Heights still stand. 1947 holds the most, with 237. 01002003001939: 1131940: 1211941: 51943: 731945: 841946: 1941947: 2371948: 1381949: 611950: 1341951: 2221952: 82193919411945194719491951
1,464 records at Chicago Heights still stand. 1947 holds the most, with 237.
Standing records at Chicago Heights by the year they were set
Year setStanding records
1939113
1940121
19415
194373
194584
1946194
1947237
1948138
194961
1950134
1951222
195282

Wettest Day of Each Month

Jun: 105.2 mm (4.1 in)
Record daily precipitation for each month at Chicago Heights The wettest day on record for each calendar month at Chicago Heights. The most was 105.2 mm (4.1 in) on 3 June 1902. 050100150 Jan: 63.0 mm (2.5 in), 25 January 1950 Jan Feb: 64.0 mm (2.5 in), 6 February 1942 Feb Mar: 68.8 mm (2.7 in), 19 March 1948 Mar Apr: 102.1 mm (4.0 in), 5 April 1947 Apr May: 83.8 mm (3.3 in), 10 May 1951 May Jun: 105.2 mm (4.1 in), 3 June 1902 Jun Jul: 59.2 mm (2.3 in), 27 July 1951 Jul Aug: 90.7 mm (3.6 in), 17 August 1946 Aug Sep: 72.4 mm (2.9 in), 14 September 1903 Sep Oct: 46.5 mm (1.8 in), 6 October 1941 Oct Nov: 36.6 mm (1.4 in), 5 November 1902 Nov Dec: 68.8 mm (2.7 in), 27 December 1949 Dec
The wettest day on record for each calendar month at Chicago Heights. The most was 105.2 mm (4.1 in) on 3 June 1902.
Record daily precipitation for each month at Chicago Heights
MonthRecord daily precipitation (mm)Date
Jan63.0 mm (2.5 in)25 January 1950
Feb64.0 mm (2.5 in)6 February 1942
Mar68.8 mm (2.7 in)19 March 1948
Apr102.1 mm (4.0 in)5 April 1947
May83.8 mm (3.3 in)10 May 1951
Jun105.2 mm (4.1 in)3 June 1902
Jul59.2 mm (2.3 in)27 July 1951
Aug90.7 mm (3.6 in)17 August 1946
Sep72.4 mm (2.9 in)14 September 1903
Oct46.5 mm (1.8 in)6 October 1941
Nov36.6 mm (1.4 in)5 November 1902
Dec68.8 mm (2.7 in)27 December 1949

Period of Record Coverage

1939 to 1952
Days with data per year at Chicago Heights 12 years of record at Chicago Heights, 1939 to 1952. 12 years have data for under 90 percent of days and are left out of rankings: 1939, 1940, 1941, 1943, 1945, 1946, 1947, 1948 and others. 1939: 148 of 365 days1940: 181 of 366 days1941: 5 of 365 days1943: 118 of 365 days1945: 169 of 365 days1946: 325 of 365 days1947: 326 of 365 days1948: 244 of 366 days1949: 111 of 365 days1950: 256 of 365 days1951: 327 of 365 days1952: 140 of 366 days194019451950
12 years of record at Chicago Heights, 1939 to 1952. 12 years have data for under 90 percent of days and are left out of rankings: 1939, 1940, 1941, 1943, 1945, 1946, 1947, 1948 and others.
Days with data per year at Chicago Heights
YearDays with dataShare of yearComplete
193914841%No
194018149%No
194151%No
194311832%No
194516946%No
194632589%No
194732689%No
194824467%No
194911130%No
195025670%No
195132790%No
195214038%No

Latest Records

0

No records were set at this station in the latest data.

Extremes by Year

1901 to 1952
Yearly extremes at Chicago Heights: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.0 C (104.0 F)194736.2 C (97.1 F)12
Coldest night (TNn)-28.3 C (-18.9 F)1951-20.2 C (-4.5 F)12
Wettest day (Rx1day)105.2 mm (4.1 in)190263.5 mm (2.5 in)18
Wettest five days (Rx5day)136.2 mm (5.4 in)190288.1 mm (3.5 in)18
Longest dry spell (CDD)42 days194820 days18

Hottest day (TXx)

Hottest day (TXx) at Chicago Heights by year The hottest day of the year at Chicago Heights, 1901 to 1952. The record is 40.0 C (104.0 F) in 1947, marked on the chart; the median year is 36.2 C (97.1 F). 3032.53537.54019101920193019401950Record: 40.0 C (104.0 F) in 1947
The hottest day of the year at Chicago Heights, 1901 to 1952. The record is 40.0 C (104.0 F) in 1947, marked on the chart; the median year is 36.2 C (97.1 F).
Hottest day (TXx) at Chicago Heights by year
YearHottest day (TXx)
1901n/a
1902n/a
1903n/a
1904n/a
193939.4 C (102.9 F)
194034.4 C (93.9 F)
194136.7 C (98.1 F)
1942n/a
194335.6 C (96.1 F)
1944n/a
194538.3 C (100.9 F)
194637.8 C (100.0 F)
194740.0 C (104.0 F)
194838.3 C (100.9 F)
194930.6 C (87.1 F)
195033.9 C (93.0 F)
195133.9 C (93.0 F)
195232.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Chicago Heights by year The coldest night of the year at Chicago Heights, 1901 to 1952. The record is -28.3 C (-18.9 F) in 1951, marked on the chart; the median year is -20.2 C (-4.5 F). -30-20-1001019101920193019401950Record: -28.3 C (-18.9 F) in 1951
The coldest night of the year at Chicago Heights, 1901 to 1952. The record is -28.3 C (-18.9 F) in 1951, marked on the chart; the median year is -20.2 C (-4.5 F).
Coldest night (TNn) at Chicago Heights by year
YearColdest night (TNn)
1901n/a
1902n/a
1903n/a
1904n/a
1939-16.1 C (3.0 F)
1940-26.1 C (-15.0 F)
19418.9 C (48.0 F)
1942n/a
19432.8 C (37.0 F)
1944n/a
1945-8.3 C (17.1 F)
1946-19.4 C (-2.9 F)
1947-21.1 C (-6.0 F)
1948-22.2 C (-8.0 F)
1949-16.1 C (3.0 F)
1950-21.7 C (-7.1 F)
1951-28.3 C (-18.9 F)
1952-21.1 C (-6.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chicago Heights by year The wettest day of the year at Chicago Heights, 1901 to 1952. The record is 105.2 mm (4.1 in) in 1902, marked on the chart; the median year is 63.5 mm (2.5 in). 025507510012519101920193019401950Record: 105.2 mm (4.1 in) in 1902
The wettest day of the year at Chicago Heights, 1901 to 1952. The record is 105.2 mm (4.1 in) in 1902, marked on the chart; the median year is 63.5 mm (2.5 in).
Wettest day (Rx1day) at Chicago Heights by year
YearWettest day (Rx1day)
190145.5 mm (1.8 in)
1902105.2 mm (4.1 in)
190372.4 mm (2.9 in)
190426.2 mm (1.0 in)
193940.6 mm (1.6 in)
194049.5 mm (1.9 in)
194165.5 mm (2.6 in)
194264.0 mm (2.5 in)
194361.0 mm (2.4 in)
194456.1 mm (2.2 in)
194548.3 mm (1.9 in)
194690.7 mm (3.6 in)
1947102.1 mm (4.0 in)
194875.9 mm (3.0 in)
194968.8 mm (2.7 in)
195063.0 mm (2.5 in)
195183.8 mm (3.3 in)
195221.3 mm (0.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chicago Heights by year The wettest five days of the year at Chicago Heights, 1901 to 1952. The record is 136.2 mm (5.4 in) in 1902, marked on the chart; the median year is 88.1 mm (3.5 in). 05010015019101920193019401950Record: 136.2 mm (5.4 in) in 1902
The wettest five days of the year at Chicago Heights, 1901 to 1952. The record is 136.2 mm (5.4 in) in 1902, marked on the chart; the median year is 88.1 mm (3.5 in).
Wettest five days (Rx5day) at Chicago Heights by year
YearWettest five days (Rx5day)
190155.7 mm (2.2 in)
1902136.2 mm (5.4 in)
190386.4 mm (3.4 in)
190444.0 mm (1.7 in)
193954.2 mm (2.1 in)
194075.1 mm (3.0 in)
1941124.5 mm (4.9 in)
194276.8 mm (3.0 in)
194397.9 mm (3.9 in)
194484.3 mm (3.3 in)
194576.2 mm (3.0 in)
194693.0 mm (3.7 in)
1947119.4 mm (4.7 in)
1948115.6 mm (4.6 in)
194989.7 mm (3.5 in)
195092.2 mm (3.6 in)
1951101.6 mm (4.0 in)
195235.8 mm (1.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chicago Heights by year The longest dry spell of the year at Chicago Heights, 1901 to 1952. The record is 42 days in 1948, marked on the chart; the median year is 20 days. 0102030405019101920193019401950Record: 42 days in 1948
The longest dry spell of the year at Chicago Heights, 1901 to 1952. The record is 42 days in 1948, marked on the chart; the median year is 20 days.
Longest dry spell (CDD) at Chicago Heights by year
YearLongest dry spell (CDD)
190118 days
190222 days
190319 days
19049 days
193935 days
194017 days
194115 days
194227 days
194327 days
194429 days
194516 days
194625 days
194723 days
194842 days
194920 days
195017 days
195117 days
195212 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.

Download the Data

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