Crystal Lake 4NW Weather Records (USC00112048)

Record envelope, standing records and threshold days for Crystal Lake 4NW (USC00112048), Illinois, United States, with 36 years of record.

Key Facts for Crystal Lake 4NW

Crystal Lake 4NW (USC00112048) is a weather station in Illinois, United States at 42.26 latitude and -88.40 longitude, 284 m (931 ft) above sea level.
The station reports from 1991 to 2026, 36 years of record.
1,464 records set at Crystal Lake 4NW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Crystal Lake 4NW set a daily record precipitation of 19.8 mm (0.8 in) on 1 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, 42.26 latitude, -88.40 longitude.
Elevation: 284 m (931 ft).
Period of record: 1991 to 2026, 36 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

23 days at or beyond a record

The band shows the record high and record low for each calendar day at Crystal Lake 4NW. The lines show the 2026 daily maximum and minimum. 23 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Crystal Lake 4NW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.0 C (59.0 F)	-33.3 C (-27.9 F)	13.9 C (57.0 F)	-20.0 C (-4.0 F)
Feb	24.4 C (75.9 F)	-33.9 C (-29.0 F)	17.2 C (63.0 F)	-13.9 C (7.0 F)
Mar	29.4 C (84.9 F)	-22.2 C (-8.0 F)	26.1 C (79.0 F)	-13.9 C (7.0 F)
Apr	30.0 C (86.0 F)	-8.3 C (17.1 F)	28.3 C (82.9 F)	-3.9 C (25.0 F)
May	36.1 C (97.0 F)	-2.2 C (28.0 F)	30.0 C (86.0 F)	-0.6 C (30.9 F)
Jun	36.7 C (98.1 F)	5.0 C (41.0 F)	33.3 C (91.9 F)	10.0 C (50.0 F)
Jul	39.4 C (102.9 F)	9.4 C (48.9 F)	33.3 C (91.9 F)	14.4 C (57.9 F)
Aug	37.2 C (99.0 F)	9.4 C (48.9 F)	n/a	n/a
Sep	35.0 C (95.0 F)	3.3 C (37.9 F)	33.3 C (91.9 F)	8.9 C (48.0 F)
Oct	30.6 C (87.1 F)	-3.3 C (26.1 F)	n/a	n/a
Nov	23.3 C (73.9 F)	-15.6 C (3.9 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-23.3 C (-9.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Crystal Lake 4NW still stand. 2012 holds the most, with 157.

Wettest Day of Each Month

Aug: 128.0 mm (5.0 in)

The wettest day on record for each calendar month at Crystal Lake 4NW. The most was 128.0 mm (5.0 in) on 22 August 2002.

Record daily precipitation for each month at Crystal Lake 4NW
Month	Record daily precipitation (mm)	Date
Jan	39.9 mm (1.6 in)	30 January 2013
Feb	52.8 mm (2.1 in)	25 February 2018
Mar	46.0 mm (1.8 in)	21 March 2011
Apr	94.2 mm (3.7 in)	18 April 2013
May	88.1 mm (3.5 in)	18 May 2004
Jun	114.3 mm (4.5 in)	26 June 2013
Jul	102.6 mm (4.0 in)	23 July 2011
Aug	128.0 mm (5.0 in)	22 August 2002
Sep	91.4 mm (3.6 in)	28 September 1999
Oct	88.1 mm (3.5 in)	4 October 1991
Nov	50.3 mm (2.0 in)	11 November 1995
Dec	55.1 mm (2.2 in)	11 December 2021

Period of Record Coverage

2011 to 2026

16 years of record at Crystal Lake 4NW, 2011 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 2014, 2015, 2016, 2017, 2018, 2024, 2025, 2026.

Days with data per year at Crystal Lake 4NW
Year	Days with data	Share of year	Complete
2011	335	92%	Yes
2012	364	99%	Yes
2013	364	100%	Yes
2014	327	90%	No
2015	271	74%	No
2016	257	70%	No
2017	249	68%	No
2018	273	75%	No
2019	350	96%	Yes
2020	352	96%	Yes
2021	338	93%	Yes
2022	330	90%	Yes
2023	332	91%	Yes
2024	271	74%	No
2025	270	74%	No
2026	161	44%	No

Latest Records

Latest records at Crystal Lake 4NW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 October 2026	Crystal Lake 4NW, US	daily rain (Provisional)	19.8 mm (0.8 in)	6.8 mm (0.27 in)	31 years	17 of 100 (Routine)
20 September 2026	Crystal Lake 4NW, US	daily rain (Provisional)	41.9 mm (1.6 in)	23.6 mm (0.9 in)	28 years	27 of 100 (Routine)
2 August 2026	Crystal Lake 4NW, US	daily rain	20.1 mm (0.8 in)	12.7 mm (0.5 in)	32 years	20 of 100 (Routine)
1 August 2026	Crystal Lake 4NW, US	daily rain	36.8 mm (1.4 in)	17.5 mm (0.7 in)	25 years	21 of 100 (Routine)
12 June 2026	Crystal Lake 4NW, US	daily rain	50.0 mm (2.0 in)	25.6 mm (1.0 in)	24 years	25 of 100 (Routine)
6 June 2026	Crystal Lake 4NW, US	daily rain	24.4 mm (1.0 in)	9.2 mm (0.36 in)	24 years	15 of 100 (Routine)
4 April 2026	Crystal Lake 4NW, US	daily rain	27.9 mm (1.1 in)	17.0 mm (0.7 in)	23 years	24 of 100 (Routine)
3 April 2026	Crystal Lake 4NW, US	daily rain	47.0 mm (1.9 in)	18.6 mm (0.7 in)	20 years	26 of 100 (Routine)
2 April 2026	Crystal Lake 4NW, US	daily rain	34.8 mm (1.4 in)	11.4 mm (0.4 in)	28 years	21 of 100 (Routine)
16 March 2026	Crystal Lake 4NW, US	daily rain	41.4 mm (1.6 in)	27.9 mm (1.1 in)	9 years	38 of 100 (Notable)
16 March 2026	Crystal Lake 4NW, US	daily snowfall	9.7 cm (3.8 in)	7.2 cm (2.8 in)	24 years	27 of 100 (Routine)
7 March 2026	Crystal Lake 4NW, US	daily rain	30.2 mm (1.2 in)	16.5 mm (0.6 in)	33 years	32 of 100 (Routine)
9 December 2025	Crystal Lake 4NW, US	daily snow depth	17.8 cm (7.0 in)	2.6 cm (1.0 in)	20 years	12 of 100 (Routine)
8 December 2025	Crystal Lake 4NW, US	daily snow depth (Tie)	20.3 cm (8.0 in)	tie	31 years	3 of 100 (Routine)
7 December 2025	Crystal Lake 4NW, US	daily snow depth (Tie)	25.4 cm (10.0 in)	tie	31 years	3 of 100 (Routine)
1 December 2025	Crystal Lake 4NW, US	daily snow depth	22.9 cm (9.0 in)	10.2 cm (4.0 in)	19 years	20 of 100 (Routine)
30 November 2025	Crystal Lake 4NW, US	monthly snow depth	25.4 cm (10.0 in)	5.1 cm (2.0 in)	7 years	26 of 100 (Routine)
30 November 2025	Crystal Lake 4NW, US	monthly snowfall	22.6 cm (8.9 in)	3.3 cm (1.3 in)	7 years	23 of 100 (Routine)
9 November 2025	Crystal Lake 4NW, US	daily snow depth (Tie)	2.5 cm (1.0 in)	tie	7 years	1 of 100 (Routine)
17 August 2025	Crystal Lake 4NW, US	daily rain	65.3 mm (2.6 in)	28.0 mm (1.1 in)	30 years	29 of 100 (Routine)

Extremes by Year

1991 to 2026

Yearly extremes at Crystal Lake 4NW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	39.4 C (102.9 F)	2012	35.6 C (96.1 F)	16
Coldest night (TNn)	-33.9 C (-29.0 F)	2019	-22.5 C (-8.5 F)	16
Wettest day (Rx1day)	128.0 mm (5.0 in)	2002	71.0 mm (2.8 in)	36
Wettest five days (Rx5day)	176.0 mm (6.9 in)	2002	99.8 mm (3.9 in)	36
Longest dry spell (CDD)	34 days	1995	19 days	36

Hottest day (TXx)

The hottest day of the year at Crystal Lake 4NW, 1991 to 2026. The record is 39.4 C (102.9 F) in 2012, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Crystal Lake 4NW by year
Year	Hottest day (TXx)
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	36.7 C (98.1 F)
2012	39.4 C (102.9 F)
2013	36.1 C (97.0 F)
2014	33.3 C (91.9 F)
2015	34.4 C (93.9 F)
2016	33.9 C (93.0 F)
2017	35.6 C (96.1 F)
2018	36.1 C (97.0 F)
2019	34.4 C (93.9 F)
2020	35.6 C (96.1 F)
2021	35.0 C (95.0 F)
2022	36.7 C (98.1 F)
2023	37.2 C (99.0 F)
2024	36.1 C (97.0 F)
2025	35.0 C (95.0 F)
2026	33.3 C (91.9 F)

Coldest night (TNn)

The coldest night of the year at Crystal Lake 4NW, 1991 to 2026. The record is -33.9 C (-29.0 F) in 2019, marked on the chart; the median year is -22.5 C (-8.5 F).

Coldest night (TNn) at Crystal Lake 4NW by year
Year	Coldest night (TNn)
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	-22.2 C (-8.0 F)
2012	-17.8 C (0.0 F)
2013	-21.1 C (-6.0 F)
2014	-28.3 C (-18.9 F)
2015	-22.8 C (-9.0 F)
2016	-23.3 C (-9.9 F)
2017	-21.1 C (-6.0 F)
2018	-24.4 C (-11.9 F)
2019	-33.9 C (-29.0 F)
2020	-22.2 C (-8.0 F)
2021	-25.0 C (-13.0 F)
2022	-21.1 C (-6.0 F)
2023	-23.3 C (-9.9 F)
2024	-26.7 C (-16.1 F)
2025	-21.7 C (-7.1 F)
2026	-20.0 C (-4.0 F)

Wettest day (Rx1day)

The wettest day of the year at Crystal Lake 4NW, 1991 to 2026. The record is 128.0 mm (5.0 in) in 2002, marked on the chart; the median year is 71.0 mm (2.8 in).

Wettest day (Rx1day) at Crystal Lake 4NW by year
Year	Wettest day (Rx1day)
1991	88.1 mm (3.5 in)
1992	33.3 mm (1.3 in)
1993	74.2 mm (2.9 in)
1994	49.8 mm (2.0 in)
1995	50.3 mm (2.0 in)
1996	79.5 mm (3.1 in)
1997	50.0 mm (2.0 in)
1998	81.8 mm (3.2 in)
1999	91.4 mm (3.6 in)
2000	73.2 mm (2.9 in)
2001	49.0 mm (1.9 in)
2002	128.0 mm (5.0 in)
2003	54.4 mm (2.1 in)
2004	88.1 mm (3.5 in)
2005	40.4 mm (1.6 in)
2006	40.4 mm (1.6 in)
2007	102.9 mm (4.1 in)
2008	77.2 mm (3.0 in)
2009	44.7 mm (1.8 in)
2010	71.4 mm (2.8 in)
2011	102.6 mm (4.0 in)
2012	64.5 mm (2.5 in)
2013	114.3 mm (4.5 in)
2014	44.2 mm (1.7 in)
2015	64.0 mm (2.5 in)
2016	35.6 mm (1.4 in)
2017	92.2 mm (3.6 in)
2018	72.9 mm (2.9 in)
2019	84.3 mm (3.3 in)
2020	55.9 mm (2.2 in)
2021	114.0 mm (4.5 in)
2022	70.6 mm (2.8 in)
2023	47.5 mm (1.9 in)
2024	94.7 mm (3.7 in)
2025	65.3 mm (2.6 in)
2026	50.0 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Crystal Lake 4NW, 1991 to 2026. The record is 176.0 mm (6.9 in) in 2002, marked on the chart; the median year is 99.8 mm (3.9 in).

Wettest five days (Rx5day) at Crystal Lake 4NW by year
Year	Wettest five days (Rx5day)
1991	88.7 mm (3.5 in)
1992	67.0 mm (2.6 in)
1993	109.2 mm (4.3 in)
1994	68.6 mm (2.7 in)
1995	54.3 mm (2.1 in)
1996	155.2 mm (6.1 in)
1997	68.8 mm (2.7 in)
1998	98.3 mm (3.9 in)
1999	122.7 mm (4.8 in)
2000	102.9 mm (4.1 in)
2001	95.5 mm (3.8 in)
2002	176.0 mm (6.9 in)
2003	75.9 mm (3.0 in)
2004	134.8 mm (5.3 in)
2005	52.8 mm (2.1 in)
2006	93.8 mm (3.7 in)
2007	154.0 mm (6.1 in)
2008	152.2 mm (6.0 in)
2009	82.1 mm (3.2 in)
2010	99.7 mm (3.9 in)
2011	131.3 mm (5.2 in)
2012	71.1 mm (2.8 in)
2013	163.0 mm (6.4 in)
2014	60.0 mm (2.4 in)
2015	109.8 mm (4.3 in)
2016	52.3 mm (2.1 in)
2017	137.6 mm (5.4 in)
2018	88.4 mm (3.5 in)
2019	99.8 mm (3.9 in)
2020	128.3 mm (5.1 in)
2021	135.1 mm (5.3 in)
2022	124.4 mm (4.9 in)
2023	71.3 mm (2.8 in)
2024	109.9 mm (4.3 in)
2025	85.9 mm (3.4 in)
2026	113.0 mm (4.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Crystal Lake 4NW, 1991 to 2026. The record is 34 days in 1995, marked on the chart; the median year is 19 days.

Longest dry spell (CDD) at Crystal Lake 4NW by year
Year	Longest dry spell (CDD)
1991	17 days
1992	23 days
1993	15 days
1994	19 days
1995	34 days
1996	25 days
1997	15 days
1998	24 days
1999	33 days
2000	16 days
2001	20 days
2002	18 days
2003	22 days
2004	19 days
2005	24 days
2006	18 days
2007	15 days
2008	16 days
2009	26 days
2010	29 days
2011	14 days
2012	15 days
2013	15 days
2014	18 days
2015	16 days
2016	11 days
2017	20 days
2018	20 days
2019	18 days
2020	16 days
2021	22 days
2022	20 days
2023	23 days
2024	20 days
2025	13 days
2026	15 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 Crystal Lake 4NW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Crystal Lake 4NW 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

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