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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Lanark Weather Records (USC00114879)

Record envelope, standing records and threshold days for Lanark (USC00114879), Illinois, United States, with 74 years of record.

Key Facts for Lanark

  • Lanark (USC00114879) is a weather station in Illinois, United States at 42.09 latitude and -89.84 longitude, 239 m (785 ft) above sea level.
  • The station reports from 1948 to 2021, 74 years of record.
  • 0 records set at Lanark 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, 42.09 latitude, -89.84 longitude.
  • Elevation: 239 m (785 ft).
  • Period of record: 1948 to 2021, 74 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Lanark, with 2026 drawn through them The band shows the record high and record low for each calendar day at Lanark. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Lanark. 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 Lanark, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jann/an/an/an/a
Febn/an/an/an/a
Marn/an/an/an/a
Aprn/an/an/an/a
Mayn/an/an/an/a
Junn/an/an/an/a
Juln/an/an/an/a
Augn/an/an/an/a
Sepn/an/an/an/a
Octn/an/an/an/a
Novn/an/an/an/a
Decn/an/an/an/a

Which Years Hold Standing Records

0 standing records
Standing records at Lanark by the year they were set 0 records at Lanark still stand. 00000000000
0 records at Lanark still stand.
Standing records at Lanark by the year they were set
Year setStanding records

Wettest Day of Each Month

Jul: 152.1 mm (6.0 in)
Record daily precipitation for each month at Lanark The wettest day on record for each calendar month at Lanark. The most was 152.1 mm (6.0 in) on 22 July 2010. 050100150200 Jan: 42.9 mm (1.7 in), 28 January 2006 Jan Feb: 76.7 mm (3.0 in), 2 February 2011 Feb Mar: 42.2 mm (1.7 in), 7 March 2009 Mar Apr: 111.5 mm (4.4 in), 18 April 2013 Apr May: 55.1 mm (2.2 in), 12 May 1999 May Jun: 136.1 mm (5.4 in), 3 June 2002 Jun Jul: 152.1 mm (6.0 in), 22 July 2010 Jul Aug: 84.1 mm (3.3 in), 19 August 2015 Aug Sep: 70.9 mm (2.8 in), 13 September 2019 Sep Oct: 61.7 mm (2.4 in), 6 October 2018 Oct Nov: 51.1 mm (2.0 in), 27 November 2015 Nov Dec: 53.6 mm (2.1 in), 9 December 2003 Dec
The wettest day on record for each calendar month at Lanark. The most was 152.1 mm (6.0 in) on 22 July 2010.
Record daily precipitation for each month at Lanark
MonthRecord daily precipitation (mm)Date
Jan42.9 mm (1.7 in)28 January 2006
Feb76.7 mm (3.0 in)2 February 2011
Mar42.2 mm (1.7 in)7 March 2009
Apr111.5 mm (4.4 in)18 April 2013
May55.1 mm (2.2 in)12 May 1999
Jun136.1 mm (5.4 in)3 June 2002
Jul152.1 mm (6.0 in)22 July 2010
Aug84.1 mm (3.3 in)19 August 2015
Sep70.9 mm (2.8 in)13 September 2019
Oct61.7 mm (2.4 in)6 October 2018
Nov51.1 mm (2.0 in)27 November 2015
Dec53.6 mm (2.1 in)9 December 2003

Latest Records

0

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

Extremes by Year

1948 to 2021
Yearly extremes at Lanark: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)152.1 mm (6.0 in)201061.2 mm (2.4 in)29
Wettest five days (Rx5day)282.1 mm (11.1 in)201088.1 mm (3.5 in)29
Longest dry spell (CDD)37 days199919 days29

Wettest day (Rx1day)

Wettest day (Rx1day) at Lanark by year The wettest day of the year at Lanark, 1948 to 2021. The record is 152.1 mm (6.0 in) in 2010, marked on the chart; the median year is 61.2 mm (2.4 in). 0501001502001960198020002020Record: 152.1 mm (6.0 in) in 2010
The wettest day of the year at Lanark, 1948 to 2021. The record is 152.1 mm (6.0 in) in 2010, marked on the chart; the median year is 61.2 mm (2.4 in).
Wettest day (Rx1day) at Lanark by year
YearWettest day (Rx1day)
194836.8 mm (1.4 in)
194954.6 mm (2.1 in)
195051.1 mm (2.0 in)
1951124.5 mm (4.9 in)
195350.8 mm (2.0 in)
195440.6 mm (1.6 in)
199955.1 mm (2.2 in)
200062.2 mm (2.4 in)
200161.2 mm (2.4 in)
2002136.1 mm (5.4 in)
200353.6 mm (2.1 in)
200447.5 mm (1.9 in)
200545.7 mm (1.8 in)
200642.9 mm (1.7 in)
200749.5 mm (1.9 in)
200843.7 mm (1.7 in)
200964.0 mm (2.5 in)
2010152.1 mm (6.0 in)
201193.5 mm (3.7 in)
201263.2 mm (2.5 in)
2013111.5 mm (4.4 in)
201456.6 mm (2.2 in)
201584.1 mm (3.3 in)
201662.7 mm (2.5 in)
2017102.1 mm (4.0 in)
201872.1 mm (2.8 in)
201970.9 mm (2.8 in)
202054.9 mm (2.2 in)
202164.8 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Lanark by year The wettest five days of the year at Lanark, 1948 to 2021. The record is 282.1 mm (11.1 in) in 2010, marked on the chart; the median year is 88.1 mm (3.5 in). 01002003001960198020002020Record: 282.1 mm (11.1 in) in 2010
The wettest five days of the year at Lanark, 1948 to 2021. The record is 282.1 mm (11.1 in) in 2010, marked on the chart; the median year is 88.1 mm (3.5 in).
Wettest five days (Rx5day) at Lanark by year
YearWettest five days (Rx5day)
194844.5 mm (1.8 in)
194967.6 mm (2.7 in)
195082.9 mm (3.3 in)
1951140.8 mm (5.5 in)
195367.1 mm (2.6 in)
195460.9 mm (2.4 in)
199978.3 mm (3.1 in)
2000127.5 mm (5.0 in)
200188.1 mm (3.5 in)
2002144.2 mm (5.7 in)
200379.2 mm (3.1 in)
200466.8 mm (2.6 in)
200557.4 mm (2.3 in)
200678.0 mm (3.1 in)
200789.9 mm (3.5 in)
2008113.3 mm (4.5 in)
200984.4 mm (3.3 in)
2010282.1 mm (11.1 in)
2011170.8 mm (6.7 in)
201275.1 mm (3.0 in)
2013135.4 mm (5.3 in)
2014114.1 mm (4.5 in)
2015132.5 mm (5.2 in)
201665.5 mm (2.6 in)
2017184.9 mm (7.3 in)
2018135.3 mm (5.3 in)
2019132.6 mm (5.2 in)
2020122.5 mm (4.8 in)
202179.0 mm (3.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Lanark by year The longest dry spell of the year at Lanark, 1948 to 2021. The record is 37 days in 1999, marked on the chart; the median year is 19 days. 102030401960198020002020Record: 37 days in 1999
The longest dry spell of the year at Lanark, 1948 to 2021. The record is 37 days in 1999, marked on the chart; the median year is 19 days.
Longest dry spell (CDD) at Lanark by year
YearLongest dry spell (CDD)
194813 days
194914 days
195030 days
195116 days
195323 days
195419 days
199937 days
200020 days
200119 days
200215 days
200323 days
200420 days
200516 days
200616 days
200729 days
200814 days
200923 days
201020 days
201113 days
201221 days
201318 days
201419 days
201524 days
201622 days
201720 days
201815 days
201919 days
202017 days
202121 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 Lanark standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Lanark 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).