Petersburg 3SSW Weather Records (USC00116760)

Record envelope, standing records and threshold days for Petersburg 3SSW (USC00116760), Illinois, United States, with 75 years of record.

Key Facts for Petersburg 3SSW

Petersburg 3SSW (USC00116760) is a weather station in Illinois, United States at 39.96 latitude and -89.87 longitude, 183 m (600 ft) above sea level.
The station reports from 1940 to 2014, 75 years of record.
10 records set at Petersburg 3SSW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Petersburg 3SSW set a daily record precipitation of 56.6 mm (2.2 in) on 29 August 2014.

About the Station

Location: Illinois, United States, 39.96 latitude, -89.87 longitude.
Elevation: 183 m (600 ft).
Period of record: 1940 to 2014, 75 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 Petersburg 3SSW. 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 Petersburg 3SSW, 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	n/a	n/a	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	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	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	12.8 C (55.0 F)	n/a	n/a	n/a

Which Years Hold Standing Records

10 standing records

10 records at Petersburg 3SSW still stand. 1943 holds the most, with 10.

All-Time Record Progression

4 new records

4 all-time records were set at Petersburg 3SSW between 3 January 1999 and 2 February 2011. Each dot is a new record.

When Petersburg 3SSW set new all-time records
Date	Kind	Detail
1999-01-03	Record snow depth	Record snow depth 38.1 cm (15.0 in)
2006-12-01	Record daily snowfall	Record daily snowfall 29.2 cm (11.5 in)
2007-02-14	Record daily snowfall	Record daily snowfall 32.5 cm (12.8 in)
2011-02-02	Record daily snowfall	Record daily snowfall 33.0 cm (13.0 in)

Wettest Day of Each Month

Aug: 139.7 mm (5.5 in)

The wettest day on record for each calendar month at Petersburg 3SSW. The most was 139.7 mm (5.5 in) on 1 August 1956.

Record daily precipitation for each month at Petersburg 3SSW
Month	Record daily precipitation (mm)	Date
Jan	58.4 mm (2.3 in)	31 January 2002
Feb	59.7 mm (2.4 in)	4 February 1942
Mar	51.6 mm (2.0 in)	12 March 1977
Apr	65.5 mm (2.6 in)	21 April 1973
May	130.6 mm (5.1 in)	8 May 1961
Jun	89.7 mm (3.5 in)	11 June 1957
Jul	127.5 mm (5.0 in)	12 July 2008
Aug	139.7 mm (5.5 in)	1 August 1956
Sep	120.7 mm (4.8 in)	20 September 1986
Oct	96.5 mm (3.8 in)	5 October 1955
Nov	87.1 mm (3.4 in)	18 November 2003
Dec	108.7 mm (4.3 in)	3 December 1982

Period of Record Coverage

1943 to 1943

1 years of record at Petersburg 3SSW, 1943 to 1943. 1 years have data for under 90 percent of days and are left out of rankings: 1943.

Latest Records

Latest records at Petersburg 3SSW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
29 August 2014	Petersburg 3SSW, US	daily rain	56.6 mm (2.2 in)	23.3 mm (0.9 in)	5 years	22 of 100 (Routine)
21 August 2014	Petersburg 3SSW, US	daily rain	48.0 mm (1.9 in)	16.0 mm (0.6 in)	9 years	18 of 100 (Routine)
8 June 2014	Petersburg 3SSW, US	daily rain	52.1 mm (2.1 in)	15.8 mm (0.6 in)	52 years	33 of 100 (Routine)
12 March 2014	Petersburg 3SSW, US	daily snowfall (Tie)	3.8 cm (1.5 in)	tie	13 years	2 of 100 (Routine)
18 February 2014	Petersburg 3SSW, US	daily snowfall	5.1 cm (2.0 in)	4.6 cm (1.8 in)	72 years	35 of 100 (Notable)
15 February 2014	Petersburg 3SSW, US	daily snowfall	15.2 cm (6.0 in)	10.1 cm (4.0 in)	4 years	24 of 100 (Routine)
5 February 2014	Petersburg 3SSW, US	daily snowfall	20.3 cm (8.0 in)	16.5 cm (6.5 in)	34 years	44 of 100 (Notable)
5 February 2014	Petersburg 3SSW, US	daily rain	9.4 mm (0.37 in)	2.5 mm (0.10 in)	39 years	20 of 100 (Routine)
1 February 2014	Petersburg 3SSW, US	daily rain	13.7 mm (0.5 in)	2.3 mm (0.09 in)	26 years	16 of 100 (Routine)
6 January 2014	Petersburg 3SSW, US	daily snowfall	15.2 cm (6.0 in)	10.6 cm (4.2 in)	32 years	48 of 100 (Notable)
1 January 2014	Petersburg 3SSW, US	daily snowfall	8.9 cm (3.5 in)	3.8 cm (1.5 in)	0 years	18 of 100 (Routine)
14 December 2013	Petersburg 3SSW, US	daily snowfall	14.0 cm (5.5 in)	3.8 cm (1.5 in)	62 years	32 of 100 (Routine)
12 November 2013	Petersburg 3SSW, US	daily snowfall	1.3 cm (0.5 in)	1.3 cm (0.5 in)	72 years	20 of 100 (Routine)
31 May 2013	Petersburg 3SSW, US	daily rain	28.4 mm (1.1 in)	1.2 mm (0.05 in)	39 years	19 of 100 (Routine)
28 May 2013	Petersburg 3SSW, US	daily rain	19.1 mm (0.8 in)	9.2 mm (0.36 in)	40 years	20 of 100 (Routine)
10 May 2013	Petersburg 3SSW, US	daily rain	31.5 mm (1.2 in)	2.0 mm (0.08 in)	32 years	17 of 100 (Routine)
4 May 2013	Petersburg 3SSW, US	daily rain	36.6 mm (1.4 in)	13.2 mm (0.5 in)	6 years	19 of 100 (Routine)
18 April 2013	Petersburg 3SSW, US	daily rain	20.6 mm (0.8 in)	5.6 mm (0.22 in)	35 years	20 of 100 (Routine)
11 April 2013	Petersburg 3SSW, US	daily rain	50.3 mm (2.0 in)	15.8 mm (0.6 in)	68 years	41 of 100 (Notable)
11 January 2013	Petersburg 3SSW, US	daily rain	30.0 mm (1.2 in)	7.1 mm (0.28 in)	64 years	34 of 100 (Routine)

Extremes by Year

1940 to 2014

Yearly extremes at Petersburg 3SSW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	12.8 C (55.0 F)	1943	12.8 C (55.0 F)	1
Wettest day (Rx1day)	139.7 mm (5.5 in)	1956	59.6 mm (2.3 in)	60
Wettest five days (Rx5day)	190.2 mm (7.5 in)	2008	92.6 mm (3.6 in)	60
Longest dry spell (CDD)	40 days	2008	23 days	60

Hottest day (TXx)

The hottest day of the year at Petersburg 3SSW, 1940 to 2014. The record is 12.8 C (55.0 F) in 1943, marked on the chart; the median year is 12.8 C (55.0 F).

Hottest day (TXx) at Petersburg 3SSW by year
Year	Hottest day (TXx)
1940	n/a
1941	n/a
1942	n/a
1943	12.8 C (55.0 F)
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
1972	n/a
1973	n/a
1974	n/a
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
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

Wettest day (Rx1day)

The wettest day of the year at Petersburg 3SSW, 1940 to 2014. The record is 139.7 mm (5.5 in) in 1956, marked on the chart; the median year is 59.6 mm (2.3 in).

Wettest day (Rx1day) at Petersburg 3SSW by year
Year	Wettest day (Rx1day)
1940	33.8 mm (1.3 in)
1941	92.7 mm (3.6 in)
1942	59.7 mm (2.4 in)
1943	37.6 mm (1.5 in)
1944	46.5 mm (1.8 in)
1945	43.7 mm (1.7 in)
1946	55.6 mm (2.2 in)
1947	82.8 mm (3.3 in)
1948	48.0 mm (1.9 in)
1949	59.4 mm (2.3 in)
1950	46.2 mm (1.8 in)
1951	49.0 mm (1.9 in)
1952	35.8 mm (1.4 in)
1953	25.4 mm (1.0 in)
1954	43.7 mm (1.7 in)
1955	96.5 mm (3.8 in)
1956	139.7 mm (5.5 in)
1957	89.7 mm (3.5 in)
1958	72.4 mm (2.9 in)
1959	83.6 mm (3.3 in)
1960	59.9 mm (2.4 in)
1961	130.6 mm (5.1 in)
1962	57.4 mm (2.3 in)
1963	86.1 mm (3.4 in)
1972	42.4 mm (1.7 in)
1973	65.5 mm (2.6 in)
1974	78.2 mm (3.1 in)
1975	34.0 mm (1.3 in)
1976	40.9 mm (1.6 in)
1977	63.2 mm (2.5 in)
1978	56.4 mm (2.2 in)
1979	62.0 mm (2.4 in)
1980	41.7 mm (1.6 in)
1981	82.8 mm (3.3 in)
1982	108.7 mm (4.3 in)
1983	49.8 mm (2.0 in)
1984	55.1 mm (2.2 in)
1985	60.2 mm (2.4 in)
1986	120.7 mm (4.8 in)
1987	55.4 mm (2.2 in)
1988	24.6 mm (1.0 in)
1996	36.6 mm (1.4 in)
1997	38.4 mm (1.5 in)
1998	67.8 mm (2.7 in)
1999	86.4 mm (3.4 in)
2000	76.7 mm (3.0 in)
2001	57.9 mm (2.3 in)
2002	71.6 mm (2.8 in)
2003	87.1 mm (3.4 in)
2004	86.4 mm (3.4 in)
2005	45.2 mm (1.8 in)
2006	77.2 mm (3.0 in)
2007	45.5 mm (1.8 in)
2008	127.5 mm (5.0 in)
2009	67.1 mm (2.6 in)
2010	74.7 mm (2.9 in)
2011	41.1 mm (1.6 in)
2012	79.2 mm (3.1 in)
2013	50.3 mm (2.0 in)
2014	56.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Petersburg 3SSW, 1940 to 2014. The record is 190.2 mm (7.5 in) in 2008, marked on the chart; the median year is 92.6 mm (3.6 in).

Wettest five days (Rx5day) at Petersburg 3SSW by year
Year	Wettest five days (Rx5day)
1940	38.9 mm (1.5 in)
1941	177.8 mm (7.0 in)
1942	120.1 mm (4.7 in)
1943	120.4 mm (4.7 in)
1944	99.6 mm (3.9 in)
1945	92.4 mm (3.6 in)
1946	127.7 mm (5.0 in)
1947	114.1 mm (4.5 in)
1948	77.2 mm (3.0 in)
1949	76.4 mm (3.0 in)
1950	64.2 mm (2.5 in)
1951	90.6 mm (3.6 in)
1952	45.7 mm (1.8 in)
1953	55.1 mm (2.2 in)
1954	87.4 mm (3.4 in)
1955	101.6 mm (4.0 in)
1956	139.7 mm (5.5 in)
1957	152.1 mm (6.0 in)
1958	130.3 mm (5.1 in)
1959	119.9 mm (4.7 in)
1960	90.4 mm (3.6 in)
1961	172.0 mm (6.8 in)
1962	107.2 mm (4.2 in)
1963	98.8 mm (3.9 in)
1972	45.2 mm (1.8 in)
1973	109.2 mm (4.3 in)
1974	84.0 mm (3.3 in)
1975	51.9 mm (2.0 in)
1976	64.2 mm (2.5 in)
1977	86.2 mm (3.4 in)
1978	65.3 mm (2.6 in)
1979	87.6 mm (3.4 in)
1980	87.9 mm (3.5 in)
1981	111.2 mm (4.4 in)
1982	155.4 mm (6.1 in)
1983	103.9 mm (4.1 in)
1984	107.2 mm (4.2 in)
1985	83.1 mm (3.3 in)
1986	167.4 mm (6.6 in)
1987	58.7 mm (2.3 in)
1988	42.4 mm (1.7 in)
1996	41.7 mm (1.6 in)
1997	76.8 mm (3.0 in)
1998	80.3 mm (3.2 in)
1999	95.0 mm (3.7 in)
2000	106.2 mm (4.2 in)
2001	75.9 mm (3.0 in)
2002	106.2 mm (4.2 in)
2003	97.6 mm (3.8 in)
2004	108.2 mm (4.3 in)
2005	72.1 mm (2.8 in)
2006	112.5 mm (4.4 in)
2007	71.4 mm (2.8 in)
2008	190.2 mm (7.5 in)
2009	91.2 mm (3.6 in)
2010	121.9 mm (4.8 in)
2011	78.0 mm (3.1 in)
2012	98.7 mm (3.9 in)
2013	83.1 mm (3.3 in)
2014	92.7 mm (3.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Petersburg 3SSW, 1940 to 2014. The record is 40 days in 2008, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Petersburg 3SSW by year
Year	Longest dry spell (CDD)
1940	14 days
1941	18 days
1942	28 days
1943	27 days
1944	22 days
1945	26 days
1946	32 days
1947	34 days
1948	22 days
1949	21 days
1950	30 days
1951	15 days
1952	25 days
1953	25 days
1954	23 days
1955	23 days
1956	32 days
1957	23 days
1958	22 days
1959	31 days
1960	18 days
1961	13 days
1962	32 days
1963	21 days
1972	19 days
1973	20 days
1974	28 days
1975	13 days
1976	25 days
1977	14 days
1978	26 days
1979	30 days
1980	28 days
1981	25 days
1982	18 days
1983	27 days
1984	13 days
1985	23 days
1986	27 days
1987	28 days
1988	16 days
1996	18 days
1997	16 days
1998	20 days
1999	21 days
2000	15 days
2001	19 days
2002	25 days
2003	24 days
2004	24 days
2005	23 days
2006	18 days
2007	23 days
2008	40 days
2009	26 days
2010	27 days
2011	13 days
2012	16 days
2013	21 days
2014	20 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

41 years, 1941 to 2007

A day with at least 59.3 mm (2.3 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 Petersburg 3SSW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.3 mm (2.3 in)
5 years	79.5 mm (3.1 in)
10 years	92.6 mm (3.6 in)
25 years	108.7 mm (4.3 in)
50 years	120.4 mm (4.7 in)	Longer than the 41 years of record
100 years	131.8 mm (5.2 in)	Longer than the 41 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, 41 years of values from 1941 to 2007.

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: 130.6 mm (5.1 in) in 1961; 108.7 mm (4.3 in) in 1982; 92.7 mm (3.6 in) in 1941.

Download the Data

Data for Petersburg 3SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Petersburg 3SSW 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 2026-10-16 (16 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).