Mt Sterling Weather Records (USC00115935)

Record envelope, standing records and threshold days for Mt Sterling (USC00115935), Illinois, United States, with 77 years of record.

Key Facts for Mt Sterling

Mt Sterling (USC00115935) is a weather station in Illinois, United States at 39.98 latitude and -90.75 longitude, 216 m (709 ft) above sea level.
The station reports from 1942 to 2018, 77 years of record.
392 records set at Mt Sterling still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Mt Sterling tied a daily record snowfall of 3.0 cm (1.2 in) on 15 January 2018.

About the Station

Location: Illinois, United States, 39.98 latitude, -90.75 longitude.
Elevation: 216 m (709 ft).
Period of record: 1942 to 2018, 77 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Mt Sterling. 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 Mt Sterling, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	18.3 C (64.9 F)	-22.8 C (-9.0 F)	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	36.1 C (97.0 F)	4.4 C (39.9 F)	n/a	n/a
Jul	37.2 C (99.0 F)	12.8 C (55.0 F)	n/a	n/a
Aug	36.7 C (98.1 F)	7.2 C (45.0 F)	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

392 standing records

392 records at Mt Sterling still stand. 1965 holds the most, with 336.

All-Time Record Progression

4 new records

4 all-time records were set at Mt Sterling between 28 January 1979 and 10 September 2014. Each dot is a new record.

When Mt Sterling set new all-time records
Date	Kind	Detail
1979-01-28	Record snow depth	Record snow depth 53.3 cm (21.0 in)
1991-10-04	Record daily precipitation	Record daily precipitation 135.4 mm (5.3 in)
2011-02-02	Record daily snowfall	Record daily snowfall 33.0 cm (13.0 in)
2014-09-10	Record daily precipitation	Record daily precipitation 162.6 mm (6.4 in)

Wettest Day of Each Month

Sep: 162.6 mm (6.4 in)

The wettest day on record for each calendar month at Mt Sterling. The most was 162.6 mm (6.4 in) on 10 September 2014.

Record daily precipitation for each month at Mt Sterling
Month	Record daily precipitation (mm)	Date
Jan	68.6 mm (2.7 in)	1 January 1965
Feb	47.0 mm (1.9 in)	27 February 1998
Mar	64.3 mm (2.5 in)	21 March 1962
Apr	95.3 mm (3.8 in)	21 April 1973
May	105.9 mm (4.2 in)	5 May 1991
Jun	104.1 mm (4.1 in)	28 June 1982
Jul	108.0 mm (4.3 in)	22 July 1951
Aug	117.3 mm (4.6 in)	26 August 2004
Sep	162.6 mm (6.4 in)	10 September 2014
Oct	135.4 mm (5.3 in)	4 October 1991
Nov	70.4 mm (2.8 in)	18 November 1985
Dec	71.9 mm (2.8 in)	21 December 1949

Period of Record Coverage

1965 to 1974

2 years of record at Mt Sterling, 1965 to 1974. 2 years have data for under 90 percent of days and are left out of rankings: 1965, 1974.

Latest Records

Latest records at Mt Sterling
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 January 2018	Mt Sterling, US	daily snowfall (Tie)	3.0 cm (1.2 in)	tie	56 years	5 of 100 (Routine)
22 August 2017	Mt Sterling, US	daily rain	61.7 mm (2.4 in)	44.2 mm (1.7 in)	38 years	47 of 100 (Notable)
20 May 2017	Mt Sterling, US	daily rain	82.6 mm (3.3 in)	8.9 mm (0.35 in)	32 years	22 of 100 (Routine)
30 April 2017	Mt Sterling, US	daily rain	55.9 mm (2.2 in)	9.7 mm (0.38 in)	34 years	25 of 100 (Routine)
30 March 2017	Mt Sterling, US	daily rain	43.9 mm (1.7 in)	13.9 mm (0.5 in)	32 years	29 of 100 (Routine)
1 March 2017	Mt Sterling, US	daily rain	21.1 mm (0.8 in)	0.5 mm (0.02 in)	24 years	14 of 100 (Routine)
8 February 2017	Mt Sterling, US	daily snowfall	5.6 cm (2.2 in)	1.8 cm (0.7 in)	1 year	10 of 100 (Routine)
17 January 2017	Mt Sterling, US	daily rain	22.4 mm (0.9 in)	3.1 mm (0.12 in)	29 years	18 of 100 (Routine)
27 August 2016	Mt Sterling, US	daily rain	42.9 mm (1.7 in)	2.8 mm (0.11 in)	4 years	9 of 100 (Routine)
27 May 2016	Mt Sterling, US	daily rain	39.4 mm (1.6 in)	4.3 mm (0.17 in)	16 years	14 of 100 (Routine)
27 April 2016	Mt Sterling, US	daily rain	27.2 mm (1.1 in)	1.5 mm (0.06 in)	26 years	15 of 100 (Routine)
8 February 2016	Mt Sterling, US	daily snowfall	3.8 cm (1.5 in)	1.3 cm (0.5 in)	5 years	10 of 100 (Routine)
28 December 2015	Mt Sterling, US	daily rain	30.0 mm (1.2 in)	10.9 mm (0.4 in)	6 years	19 of 100 (Routine)
14 December 2015	Mt Sterling, US	daily rain	48.3 mm (1.9 in)	19.9 mm (0.8 in)	4 years	27 of 100 (Routine)
28 October 2015	Mt Sterling, US	daily rain	26.7 mm (1.1 in)	8.9 mm (0.35 in)	44 years	25 of 100 (Routine)
9 September 2015	Mt Sterling, US	daily rain	27.9 mm (1.1 in)	1.2 mm (0.05 in)	6 years	9 of 100 (Routine)
12 July 2015	Mt Sterling, US	daily rain	85.3 mm (3.4 in)	71.3 mm (2.8 in)	6 years	49 of 100 (Notable)
26 February 2015	Mt Sterling, US	daily snowfall	7.6 cm (3.0 in)	5.1 cm (2.0 in)	37 years	28 of 100 (Routine)
2 October 2014	Mt Sterling, US	daily rain	75.7 mm (3.0 in)	41.7 mm (1.6 in)	52 years	49 of 100 (Notable)
10 September 2014	Mt Sterling, US	all-time rain	162.6 mm (6.4 in)	27.2 mm (1.1 in)	22 years	51 of 100 (Notable)

Extremes by Year

1942 to 2018

Yearly extremes at Mt Sterling: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.2 C (99.0 F)	1965	36.7 C (98.0 F)	2
Coldest night (TNn)	-22.8 C (-9.0 F)	1965	-9.2 C (15.4 F)	2
Wettest day (Rx1day)	162.6 mm (6.4 in)	2014	67.1 mm (2.6 in)	77
Wettest five days (Rx5day)	185.9 mm (7.3 in)	1991	101.0 mm (4.0 in)	75
Longest dry spell (CDD)	46 days	1989	23 days	77

Hottest day (TXx)

The hottest day of the year at Mt Sterling, 1942 to 2018. The record is 37.2 C (99.0 F) in 1965, marked on the chart; the median year is 36.7 C (98.0 F).

Hottest day (TXx) at Mt Sterling by year
Year	Hottest day (TXx)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	37.2 C (99.0 F)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	36.1 C (97.0 F)
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
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	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a

Coldest night (TNn)

The coldest night of the year at Mt Sterling, 1942 to 2018. The record is -22.8 C (-9.0 F) in 1965, marked on the chart; the median year is -9.2 C (15.4 F).

Coldest night (TNn) at Mt Sterling by year
Year	Coldest night (TNn)
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	-22.8 C (-9.0 F)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	4.4 C (39.9 F)
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
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	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a
2016	n/a
2017	n/a
2018	n/a

Wettest day (Rx1day)

The wettest day of the year at Mt Sterling, 1942 to 2018. The record is 162.6 mm (6.4 in) in 2014, marked on the chart; the median year is 67.1 mm (2.6 in).

Wettest day (Rx1day) at Mt Sterling by year
Year	Wettest day (Rx1day)
1942	65.8 mm (2.6 in)
1943	57.7 mm (2.3 in)
1944	67.8 mm (2.7 in)
1945	55.9 mm (2.2 in)
1946	88.9 mm (3.5 in)
1947	63.2 mm (2.5 in)
1948	67.1 mm (2.6 in)
1949	71.9 mm (2.8 in)
1950	50.0 mm (2.0 in)
1951	108.0 mm (4.3 in)
1952	47.2 mm (1.9 in)
1953	35.3 mm (1.4 in)
1954	42.9 mm (1.7 in)
1955	97.0 mm (3.8 in)
1956	67.6 mm (2.7 in)
1957	77.7 mm (3.1 in)
1958	74.4 mm (2.9 in)
1959	62.2 mm (2.4 in)
1960	69.9 mm (2.8 in)
1961	69.1 mm (2.7 in)
1962	64.3 mm (2.5 in)
1963	56.9 mm (2.2 in)
1964	54.4 mm (2.1 in)
1965	68.6 mm (2.7 in)
1966	43.9 mm (1.7 in)
1967	49.5 mm (1.9 in)
1968	90.2 mm (3.6 in)
1969	71.9 mm (2.8 in)
1970	69.9 mm (2.8 in)
1971	53.1 mm (2.1 in)
1972	49.3 mm (1.9 in)
1973	95.3 mm (3.8 in)
1974	57.2 mm (2.3 in)
1975	63.5 mm (2.5 in)
1976	50.8 mm (2.0 in)
1977	74.9 mm (2.9 in)
1978	70.6 mm (2.8 in)
1979	45.7 mm (1.8 in)
1980	44.2 mm (1.7 in)
1981	97.8 mm (3.9 in)
1982	104.1 mm (4.1 in)
1983	60.5 mm (2.4 in)
1984	73.7 mm (2.9 in)
1985	70.4 mm (2.8 in)
1986	77.5 mm (3.1 in)
1987	61.5 mm (2.4 in)
1988	52.3 mm (2.1 in)
1989	47.2 mm (1.9 in)
1990	58.4 mm (2.3 in)
1991	135.4 mm (5.3 in)
1992	61.7 mm (2.4 in)
1993	79.0 mm (3.1 in)
1994	69.9 mm (2.8 in)
1995	92.7 mm (3.6 in)
1996	83.8 mm (3.3 in)
1997	44.5 mm (1.8 in)
1998	85.1 mm (3.4 in)
1999	51.1 mm (2.0 in)
2000	35.1 mm (1.4 in)
2001	91.4 mm (3.6 in)
2002	67.8 mm (2.7 in)
2003	78.7 mm (3.1 in)
2004	117.3 mm (4.6 in)
2005	38.4 mm (1.5 in)
2006	58.7 mm (2.3 in)
2007	50.8 mm (2.0 in)
2008	97.8 mm (3.9 in)
2009	61.5 mm (2.4 in)
2010	62.2 mm (2.4 in)
2011	59.2 mm (2.3 in)
2012	101.6 mm (4.0 in)
2013	101.6 mm (4.0 in)
2014	162.6 mm (6.4 in)
2015	85.3 mm (3.4 in)
2016	45.2 mm (1.8 in)
2017	82.6 mm (3.3 in)
2018	38.6 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Mt Sterling, 1942 to 2018. The record is 185.9 mm (7.3 in) in 1991, marked on the chart; the median year is 101.0 mm (4.0 in).

Wettest five days (Rx5day) at Mt Sterling by year
Year	Wettest five days (Rx5day)
1942	79.0 mm (3.1 in)
1943	113.6 mm (4.5 in)
1944	111.6 mm (4.4 in)
1945	123.7 mm (4.9 in)
1946	138.5 mm (5.5 in)
1947	93.5 mm (3.7 in)
1948	93.0 mm (3.7 in)
1949	89.3 mm (3.5 in)
1950	66.5 mm (2.6 in)
1951	157.3 mm (6.2 in)
1952	83.0 mm (3.3 in)
1953	57.7 mm (2.3 in)
1954	67.5 mm (2.7 in)
1955	112.7 mm (4.4 in)
1956	93.6 mm (3.7 in)
1957	101.0 mm (4.0 in)
1958	133.4 mm (5.3 in)
1959	121.9 mm (4.8 in)
1960	112.3 mm (4.4 in)
1961	140.5 mm (5.5 in)
1962	82.8 mm (3.3 in)
1963	85.7 mm (3.4 in)
1964	106.0 mm (4.2 in)
1965	120.5 mm (4.7 in)
1966	70.3 mm (2.8 in)
1967	85.3 mm (3.4 in)
1968	92.0 mm (3.6 in)
1969	177.3 mm (7.0 in)
1970	121.5 mm (4.8 in)
1971	53.1 mm (2.1 in)
1972	64.1 mm (2.5 in)
1973	103.7 mm (4.1 in)
1974	97.1 mm (3.8 in)
1975	72.1 mm (2.8 in)
1976	73.7 mm (2.9 in)
1977	176.3 mm (6.9 in)
1978	78.2 mm (3.1 in)
1979	71.9 mm (2.8 in)
1980	58.7 mm (2.3 in)
1981	119.4 mm (4.7 in)
1982	130.5 mm (5.1 in)
1983	127.1 mm (5.0 in)
1984	95.5 mm (3.8 in)
1985	135.9 mm (5.4 in)
1986	124.7 mm (4.9 in)
1987	126.3 mm (5.0 in)
1988	58.2 mm (2.3 in)
1989	67.8 mm (2.7 in)
1990	81.6 mm (3.2 in)
1991	185.9 mm (7.3 in)
1992	113.0 mm (4.4 in)
1993	129.0 mm (5.1 in)
1994	86.2 mm (3.4 in)
1995	163.3 mm (6.4 in)
1996	181.2 mm (7.1 in)
1997	56.9 mm (2.2 in)
1998	124.7 mm (4.9 in)
1999	72.4 mm (2.9 in)
2000	61.5 mm (2.4 in)
2001	103.1 mm (4.1 in)
2002	117.6 mm (4.6 in)
2003	116.3 mm (4.6 in)
2004	149.0 mm (5.9 in)
2005	87.6 mm (3.4 in)
2006	84.1 mm (3.3 in)
2007	65.0 mm (2.6 in)
2008	150.9 mm (5.9 in)
2009	102.4 mm (4.0 in)
2010	102.1 mm (4.0 in)
2011	44.7 mm (1.8 in)
2012	n/a
2013	45.0 mm (1.8 in)
2014	n/a
2015	140.4 mm (5.5 in)
2016	97.6 mm (3.8 in)
2017	135.7 mm (5.3 in)
2018	23.9 mm (0.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Mt Sterling, 1942 to 2018. The record is 46 days in 1989, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Mt Sterling by year
Year	Longest dry spell (CDD)
1942	24 days
1943	28 days
1944	26 days
1945	23 days
1946	32 days
1947	28 days
1948	32 days
1949	21 days
1950	29 days
1951	13 days
1952	26 days
1953	23 days
1954	22 days
1955	28 days
1956	39 days
1957	23 days
1958	32 days
1959	16 days
1960	16 days
1961	23 days
1962	17 days
1963	34 days
1964	23 days
1965	16 days
1966	19 days
1967	16 days
1968	20 days
1969	19 days
1970	16 days
1971	21 days
1972	18 days
1973	15 days
1974	16 days
1975	15 days
1976	26 days
1977	31 days
1978	20 days
1979	31 days
1980	29 days
1981	24 days
1982	27 days
1983	21 days
1984	21 days
1985	17 days
1986	31 days
1987	21 days
1988	22 days
1989	46 days
1990	21 days
1991	19 days
1992	26 days
1993	20 days
1994	22 days
1995	24 days
1996	26 days
1997	23 days
1998	23 days
1999	45 days
2000	19 days
2001	21 days
2002	28 days
2003	14 days
2004	29 days
2005	30 days
2006	35 days
2007	29 days
2008	19 days
2009	14 days
2010	28 days
2011	7 days
2012	2 days
2013	31 days
2014	1 day
2015	34 days
2016	13 days
2017	21 days
2018	11 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.

Rainfall Return Levels

59 years, 1943 to 2017

A day with at least 64.0 mm (2.5 in) of rain is expected about once in 2 years. A day with at least 131.8 mm (5.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Mt Sterling: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	64.0 mm (2.5 in)
5 years	82.0 mm (3.2 in)
10 years	94.0 mm (3.7 in)
25 years	109.1 mm (4.3 in)
50 years	120.5 mm (4.7 in)
100 years	131.8 mm (5.2 in)	Longer than the 59 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, 59 years of values from 1943 to 2017.

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: 135.4 mm (5.3 in) in 1991; 117.3 mm (4.6 in) in 2004; 108.0 mm (4.3 in) in 1951.

Download the Data

Data for Mt Sterling standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Mt Sterling 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).