Rantoul Weather Records (USW00014806)

Record envelope, standing records and threshold days for Rantoul (USW00014806), Illinois, United States, with 134 years of record.

Key Facts for Rantoul

Rantoul (USW00014806) is a weather station in Illinois, United States at 40.31 latitude and -88.16 longitude, 226 m (740 ft) above sea level.
The station reports from 1893 to 2026, 134 years of record.
1,464 records set at Rantoul still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Rantoul set a daily record precipitation of 98.3 mm (3.9 in) on 15 August 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, 40.31 latitude, -88.16 longitude.
Elevation: 226 m (740 ft).
Period of record: 1893 to 2026, 134 years.
Eligible elements: tmax, tmin, 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 Rantoul. 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 Rantoul, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	21.1 C (70.0 F)	-32.8 C (-27.0 F)	n/a	n/a
Feb	22.2 C (72.0 F)	-31.1 C (-24.0 F)	n/a	n/a
Mar	30.6 C (87.1 F)	-25.0 C (-13.0 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-12.2 C (10.0 F)	n/a	n/a
May	37.2 C (99.0 F)	-3.3 C (26.1 F)	n/a	n/a
Jun	40.6 C (105.1 F)	2.2 C (36.0 F)	n/a	n/a
Jul	42.8 C (109.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	38.9 C (102.0 F)	3.3 C (37.9 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-4.4 C (24.1 F)	n/a	n/a
Oct	33.9 C (93.0 F)	-7.2 C (19.0 F)	n/a	n/a
Nov	27.8 C (82.0 F)	-20.6 C (-5.1 F)	n/a	n/a
Dec	23.9 C (75.0 F)	-30.0 C (-22.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Rantoul still stand. 2012 holds the most, with 37.

Standing records at Rantoul by the year they were set
Year set	Standing records
1896	9
1897	31
1899	25
1900	19
1901	27
1902	17
1903	19
1904	15
1905	11
1906	20
1907	25
1908	24
1909	31
1910	26
1911	25
1912	20
1913	1
1948	12
1949	15
1950	24
1951	9
1952	24
1953	15
1954	22
1955	19
1956	18
1957	12
1958	19
1959	10
1960	21
1961	18
1962	10
1963	16
1964	13
1965	18
1966	14
1967	11
1968	18
1969	4
1970	7
1971	10
1972	13
1973	7
1974	13
1975	13
1976	17
1977	23
1978	6
1979	16
1980	19
1981	16
1982	23
1983	11
1984	12
1985	13
1986	15
1987	12
1988	21
1989	30
1990	18
1991	34
1992	14
1993	9
1994	11
1995	12
1996	15
1997	15
1998	21
1999	12
2000	17
2001	15
2002	21
2003	8
2004	13
2005	8
2006	10
2007	12
2008	7
2009	12
2010	10
2011	18
2012	37
2013	11
2014	15
2015	12
2016	12
2017	27
2018	15
2019	10
2020	10
2021	4
2022	10
2023	5

All-Time Record Progression

10 new records

10 all-time records were set at Rantoul between 27 May 1956 and 19 January 1994. Each dot is a new record.

When Rantoul set new all-time records
Date	Kind	Detail
1956-05-27	Record daily precipitation	Record daily precipitation 152.7 mm (6.0 in)
1977-01-17	Record low maximum temperature	Record low maximum temperature -20.6 C (-5.1 F)
1977-08-06	Record daily precipitation	Record daily precipitation 156.2 mm (6.1 in)
1979-02-01	Record snow depth	Record snow depth 50.8 cm (20.0 in)
1979-02-09	Record snow depth	Record snow depth 55.9 cm (22.0 in)
1982-02-01	Record daily snowfall	Record daily snowfall 40.6 cm (16.0 in)
1985-01-20	Record low minimum temperature	Record low minimum temperature -32.8 C (-27.0 F)
1989-12-21	Record low maximum temperature	Record low maximum temperature -22.2 C (-8.0 F)
1991-06-30	Record high minimum temperature	Record high minimum temperature 27.8 C (82.0 F)
1994-01-19	Record low maximum temperature	Record low maximum temperature -23.3 C (-9.9 F)

Wettest Day of Each Month

Aug: 156.2 mm (6.1 in)

The wettest day on record for each calendar month at Rantoul. The most was 156.2 mm (6.1 in) on 6 August 1977.

Record daily precipitation for each month at Rantoul
Month	Record daily precipitation (mm)	Date
Jan	116.8 mm (4.6 in)	12 January 2019
Feb	50.8 mm (2.0 in)	25 February 2001
Mar	80.0 mm (3.1 in)	11 March 1990
Apr	114.3 mm (4.5 in)	12 April 1994
May	152.7 mm (6.0 in)	27 May 1956
Jun	129.3 mm (5.1 in)	21 June 1900
Jul	128.3 mm (5.1 in)	30 July 1987
Aug	156.2 mm (6.1 in)	6 August 1977
Sep	101.6 mm (4.0 in)	15 September 2008
Oct	109.7 mm (4.3 in)	24 October 2021
Nov	61.0 mm (2.4 in)	23 November 1982
Dec	72.6 mm (2.9 in)	7 December 1966

Period of Record Coverage

1896 to 2023

95 years of record at Rantoul, 1896 to 2023. 9 years have data for under 90 percent of days and are left out of rankings: 1896, 1898, 1899, 1913, 1947, 1963, 1978, 1979 and others.

Days with data per year at Rantoul
Year	Days with data	Share of year	Complete
1896	120	33%	No
1897	364	100%	Yes
1898	30	8%	No
1899	245	67%	No
1900	363	99%	Yes
1901	363	99%	Yes
1902	361	99%	Yes
1903	356	98%	Yes
1904	362	99%	Yes
1905	364	100%	Yes
1906	364	100%	Yes
1907	352	96%	Yes
1908	365	100%	Yes
1909	363	99%	Yes
1910	364	100%	Yes
1911	361	99%	Yes
1912	365	100%	Yes
1913	90	25%	No
1947	1	0%	No
1948	360	98%	Yes
1949	360	99%	Yes
1950	362	99%	Yes
1951	365	100%	Yes
1952	366	100%	Yes
1953	365	100%	Yes
1954	365	100%	Yes
1955	363	99%	Yes
1956	366	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	364	100%	Yes
1962	365	100%	Yes
1963	241	66%	No
1964	362	99%	Yes
1965	365	100%	Yes
1966	364	100%	Yes
1967	363	99%	Yes
1968	347	95%	Yes
1969	357	98%	Yes
1970	360	99%	Yes
1971	361	99%	Yes
1972	364	99%	Yes
1973	364	100%	Yes
1974	353	97%	Yes
1975	360	99%	Yes
1976	353	96%	Yes
1977	350	96%	Yes
1978	267	73%	No
1979	326	89%	No
1980	361	99%	Yes
1981	359	98%	Yes
1982	355	97%	Yes
1983	353	97%	Yes
1984	353	96%	Yes
1985	343	94%	Yes
1986	346	95%	Yes
1987	229	63%	No
1988	364	99%	Yes
1989	360	99%	Yes
1990	362	99%	Yes
1991	360	99%	Yes
1992	359	98%	Yes
1993	352	96%	Yes
1994	351	96%	Yes
1995	361	99%	Yes
1996	357	98%	Yes
1997	361	99%	Yes
1998	359	98%	Yes
1999	363	99%	Yes
2000	363	99%	Yes
2001	361	99%	Yes
2002	357	98%	Yes
2003	359	98%	Yes
2004	358	98%	Yes
2005	354	97%	Yes
2006	362	99%	Yes
2007	355	97%	Yes
2008	353	96%	Yes
2009	363	99%	Yes
2010	365	100%	Yes
2011	364	100%	Yes
2012	361	99%	Yes
2013	363	99%	Yes
2014	365	100%	Yes
2015	365	100%	Yes
2016	366	100%	Yes
2017	364	100%	Yes
2018	364	100%	Yes
2019	365	100%	Yes
2020	366	100%	Yes
2021	365	100%	Yes
2022	364	100%	Yes
2023	364	100%	Yes

Latest Records

Latest records at Rantoul
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 2026	Rantoul, US	daily rain (Provisional)	98.3 mm (3.9 in)	34.8 mm (1.4 in)	51 years	46 of 100 (Notable)
14 August 2026	Rantoul, US	daily rain	71.1 mm (2.8 in)	43.7 mm (1.7 in)	32 years	46 of 100 (Notable)
18 June 2026	Rantoul, US	daily rain	63.2 mm (2.5 in)	18.5 mm (0.7 in)	76 years	45 of 100 (Notable)
1 April 2026	Rantoul, US	daily rain	45.2 mm (1.8 in)	5.8 mm (0.23 in)	121 years	45 of 100 (Notable)
25 January 2026	Rantoul, US	daily snowfall	10.2 cm (4.0 in)	2.6 cm (1.0 in)	130 years	47 of 100 (Notable)
3 December 2025	Rantoul, US	daily snow depth	15.2 cm (6.0 in)	5.0 cm (2.0 in)	83 years	41 of 100 (Notable)
2 December 2025	Rantoul, US	daily snow depth	15.2 cm (6.0 in)	5.0 cm (2.0 in)	83 years	41 of 100 (Notable)
30 November 2025	Rantoul, US	daily snowfall	10.2 cm (4.0 in)	5.1 cm (2.0 in)	118 years	50 of 100 (Notable)
11 November 2025	Rantoul, US	daily snow depth (Tie)	2.5 cm (1.0 in)	tie	6 years	2 of 100 (Routine)
10 November 2025	Rantoul, US	daily snowfall	5.1 cm (2.0 in)	3.8 cm (1.5 in)	124 years	48 of 100 (Notable)
10 November 2025	Rantoul, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	84 years	20 of 100 (Routine)
5 November 2024	Rantoul, US	daily rain	43.9 mm (1.7 in)	12.9 mm (0.5 in)	119 years	52 of 100 (Notable)
10 July 2024	Rantoul, US	daily rain	67.6 mm (2.7 in)	6.6 mm (0.26 in)	66 years	33 of 100 (Routine)
23 December 2023	Rantoul, US	daily high min (Tie)	7.2 C (45.0 F)	tie	118 years	10 of 100 (Routine)
16 December 2023	Rantoul, US	daily rain	21.8 mm (0.9 in)	6.8 mm (0.27 in)	16 years	20 of 100 (Routine)
8 November 2023	Rantoul, US	daily high max	26.1 C (79.0 F)	0.5 C (0.9 F)	24 years	17 of 100 (Routine)
31 October 2023	Rantoul, US	daily low max	2.8 C (37.0 F)	0.5 C (0.9 F)	68 years	30 of 100 (Routine)
26 October 2023	Rantoul, US	daily high min	16.1 C (61.0 F)	1.1 C (2.0 F)	120 years	42 of 100 (Notable)
13 October 2023	Rantoul, US	daily rain	38.9 mm (1.5 in)	13.5 mm (0.5 in)	49 years	35 of 100 (Notable)
4 October 2023	Rantoul, US	daily high min (Tie)	17.8 C (64.0 F)	tie	72 years	7 of 100 (Routine)

Climate Trend

81 complete years, 1897 to 2023

One stripe for each of 81 complete years at Rantoul, 1897 to 2023. Blue stripes are years cooler than the station's own mean of 10.9 C (51.7 F); red stripes are warmer. The coolest year was 1996, at 9.4 C (48.9 F), and the warmest was 2012, at 13.4 C (56.1 F). The strongest colour marks a difference of 2.5 C (4.5 F).

Annual mean temperature at Rantoul as warming stripes, 1897 to 2023
Year	Annual mean temperature	Difference from the station mean
1897	10.7 C	-0.18 C
1900	11.5 C	+0.53 C
1901	10.5 C	-0.41 C
1902	10.9 C	-0.01 C
1903	10.3 C	-0.64 C
1904	9.5 C	-1.44 C
1906	11.2 C	+0.31 C
1907	10.3 C	-0.61 C
1908	11.8 C	+0.87 C
1909	10.8 C	-0.11 C
1910	10.9 C	-0.05 C
1911	11.8 C	+0.91 C
1912	9.9 C	-1.06 C
1948	11.1 C	+0.19 C
1949	11.9 C	+0.95 C
1950	9.8 C	-1.12 C
1951	9.9 C	-1.00 C
1952	11.6 C	+0.71 C
1953	12.2 C	+1.24 C
1954	12.2 C	+1.30 C
1955	11.4 C	+0.45 C
1956	11.6 C	+0.66 C
1957	10.8 C	-0.14 C
1958	9.6 C	-1.37 C
1959	10.5 C	-0.43 C
1960	9.6 C	-1.36 C
1961	10.8 C	-0.17 C
1962	10.0 C	-0.97 C
1964	10.7 C	-0.19 C
1965	11.4 C	+0.49 C
1966	11.1 C	+0.16 C
1967	11.0 C	+0.03 C
1969	10.8 C	-0.09 C
1970	11.2 C	+0.31 C
1971	12.1 C	+1.22 C
1972	11.1 C	+0.15 C
1973	12.0 C	+1.05 C
1975	10.7 C	-0.27 C
1976	9.9 C	-1.06 C
1977	10.3 C	-0.66 C
1980	10.0 C	-0.96 C
1981	10.1 C	-0.82 C
1982	9.7 C	-1.27 C
1984	10.5 C	-0.41 C
1986	11.2 C	+0.27 C
1988	10.2 C	-0.77 C
1989	9.4 C	-1.50 C
1990	11.1 C	+0.20 C
1991	12.1 C	+1.19 C
1992	10.6 C	-0.28 C
1993	10.2 C	-0.68 C
1994	10.3 C	-0.63 C
1995	10.9 C	-0.04 C
1996	9.4 C	-1.51 C
1997	9.8 C	-1.17 C
1998	12.1 C	+1.15 C
1999	11.1 C	+0.22 C
2000	10.2 C	-0.72 C
2001	10.7 C	-0.22 C
2002	10.4 C	-0.54 C
2003	10.8 C	-0.11 C
2004	11.0 C	+0.10 C
2005	11.7 C	+0.73 C
2006	12.1 C	+1.18 C
2007	11.9 C	+0.94 C
2008	10.3 C	-0.60 C
2009	10.7 C	-0.24 C
2010	11.5 C	+0.55 C
2011	11.4 C	+0.48 C
2012	13.4 C	+2.46 C
2013	10.8 C	-0.11 C
2014	9.8 C	-1.16 C
2015	11.3 C	+0.37 C
2016	12.4 C	+1.52 C
2017	12.7 C	+1.82 C
2018	11.5 C	+0.54 C
2019	10.5 C	-0.46 C
2020	11.2 C	+0.30 C
2021	11.8 C	+0.83 C
2022	10.6 C	-0.32 C
2023	12.3 C	+1.37 C

The fitted trend in annual mean temperature here over 1897 to 2023 is 0.04 C (-0.01 to 0.09) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.06 F (-0.03 to 0.16) per decade. The slope is a straight line fitted to 81 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Rantoul
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	0.04 C (-0.01 to 0.09) per decade	0.06 F (-0.03 to 0.16) per decade	1897 to 2023	81	Not clearly different from zero
Mean daily maximum	0.05 C (-0.01 to 0.10) per decade	0.08 F (-0.02 to 0.19) per decade	1897 to 2023	81	Not clearly different from zero
Mean daily minimum	0.03 C (-0.03 to 0.09) per decade	0.05 F (-0.06 to 0.16) per decade	1897 to 2023	81	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1893 to 2026

Yearly extremes at Rantoul: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	42.8 C (109.0 F)	1954	36.7 C (98.1 F)	95
Coldest night (TNn)	-32.8 C (-27.0 F)	1985	-23.3 C (-9.9 F)	95
Wettest day (Rx1day)	156.2 mm (6.1 in)	1977	61.0 mm (2.4 in)	107
Wettest five days (Rx5day)	238.8 mm (9.4 in)	1977	98.9 mm (3.9 in)	107
Longest dry spell (CDD)	39 days	1956	20 days	107

Hottest day (TXx)

The hottest day of the year at Rantoul, 1893 to 2026. The record is 42.8 C (109.0 F) in 1954, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Rantoul by year
Year	Hottest day (TXx)
1893	n/a
1894	n/a
1895	n/a
1896	35.0 C (95.0 F)
1897	37.8 C (100.0 F)
1898	27.8 C (82.0 F)
1899	39.4 C (102.9 F)
1900	37.2 C (99.0 F)
1901	41.1 C (106.0 F)
1902	36.1 C (97.0 F)
1903	36.1 C (97.0 F)
1904	34.4 C (93.9 F)
1905	36.1 C (97.0 F)
1906	36.7 C (98.1 F)
1907	37.2 C (99.0 F)
1908	36.7 C (98.1 F)
1909	36.1 C (97.0 F)
1910	36.7 C (98.1 F)
1911	39.4 C (102.9 F)
1912	36.7 C (98.1 F)
1913	19.4 C (66.9 F)
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	-3.9 C (25.0 F)
1948	36.7 C (98.1 F)
1949	36.1 C (97.0 F)
1950	33.3 C (91.9 F)
1951	35.0 C (95.0 F)
1952	37.8 C (100.0 F)
1953	40.0 C (104.0 F)
1954	42.8 C (109.0 F)
1955	36.1 C (97.0 F)
1956	36.1 C (97.0 F)
1957	33.9 C (93.0 F)
1958	35.6 C (96.1 F)
1959	35.6 C (96.1 F)
1960	35.6 C (96.1 F)
1961	34.4 C (93.9 F)
1962	34.4 C (93.9 F)
1963	32.2 C (90.0 F)
1964	37.2 C (99.0 F)
1965	36.1 C (97.0 F)
1966	39.4 C (102.9 F)
1967	35.0 C (95.0 F)
1968	35.0 C (95.0 F)
1969	35.0 C (95.0 F)
1970	37.2 C (99.0 F)
1971	36.7 C (98.1 F)
1972	35.6 C (96.1 F)
1973	35.6 C (96.1 F)
1974	37.8 C (100.0 F)
1975	34.4 C (93.9 F)
1976	35.6 C (96.1 F)
1977	37.2 C (99.0 F)
1978	35.6 C (96.1 F)
1979	34.4 C (93.9 F)
1980	38.3 C (100.9 F)
1981	35.6 C (96.1 F)
1982	36.7 C (98.1 F)
1983	38.9 C (102.0 F)
1984	36.1 C (97.0 F)
1985	35.0 C (95.0 F)
1986	37.8 C (100.0 F)
1987	38.3 C (100.9 F)
1988	40.0 C (104.0 F)
1989	36.7 C (98.1 F)
1990	36.7 C (98.1 F)
1991	37.8 C (100.0 F)
1992	36.1 C (97.0 F)
1993	36.1 C (97.0 F)
1994	40.6 C (105.1 F)
1995	40.6 C (105.1 F)
1996	36.7 C (98.1 F)
1997	37.2 C (99.0 F)
1998	37.2 C (99.0 F)
1999	38.9 C (102.0 F)
2000	36.7 C (98.1 F)
2001	37.2 C (99.0 F)
2002	38.3 C (100.9 F)
2003	36.7 C (98.1 F)
2004	35.0 C (95.0 F)
2005	36.7 C (98.1 F)
2006	36.7 C (98.1 F)
2007	36.7 C (98.1 F)
2008	33.9 C (93.0 F)
2009	35.6 C (96.1 F)
2010	37.2 C (99.0 F)
2011	38.3 C (100.9 F)
2012	40.0 C (104.0 F)
2013	36.7 C (98.1 F)
2014	35.6 C (96.1 F)
2015	36.1 C (97.0 F)
2016	36.7 C (98.1 F)
2017	36.7 C (98.1 F)
2018	37.2 C (99.0 F)
2019	34.4 C (93.9 F)
2020	33.9 C (93.0 F)
2021	33.9 C (93.0 F)
2022	37.2 C (99.0 F)
2023	35.0 C (95.0 F)
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Rantoul, 1893 to 2026. The record is -32.8 C (-27.0 F) in 1985, marked on the chart; the median year is -23.3 C (-9.9 F).

Coldest night (TNn) at Rantoul by year
Year	Coldest night (TNn)
1893	n/a
1894	n/a
1895	n/a
1896	-15.0 C (5.0 F)
1897	-26.7 C (-16.1 F)
1898	-6.7 C (19.9 F)
1899	-19.4 C (-2.9 F)
1900	-22.2 C (-8.0 F)
1901	-25.0 C (-13.0 F)
1902	-23.9 C (-11.0 F)
1903	-27.2 C (-17.0 F)
1904	-28.9 C (-20.0 F)
1905	-31.1 C (-24.0 F)
1906	-21.7 C (-7.1 F)
1907	-20.6 C (-5.1 F)
1908	-18.3 C (-0.9 F)
1909	-25.0 C (-13.0 F)
1910	-23.3 C (-9.9 F)
1911	-20.6 C (-5.1 F)
1912	-28.9 C (-20.0 F)
1913	-22.8 C (-9.0 F)
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	-15.0 C (5.0 F)
1948	-20.0 C (-4.0 F)
1949	-18.9 C (-2.0 F)
1950	-21.1 C (-6.0 F)
1951	-23.9 C (-11.0 F)
1952	-17.2 C (1.0 F)
1953	-17.2 C (1.0 F)
1954	-19.4 C (-2.9 F)
1955	-22.8 C (-9.0 F)
1956	-16.7 C (1.9 F)
1957	-22.2 C (-8.0 F)
1958	-23.3 C (-9.9 F)
1959	-25.6 C (-14.1 F)
1960	-24.4 C (-11.9 F)
1961	-20.0 C (-4.0 F)
1962	-23.3 C (-9.9 F)
1963	-26.1 C (-15.0 F)
1964	-18.9 C (-2.0 F)
1965	-21.7 C (-7.1 F)
1966	-24.4 C (-11.9 F)
1967	-22.8 C (-9.0 F)
1968	-26.1 C (-15.0 F)
1969	-21.7 C (-7.1 F)
1970	-25.6 C (-14.1 F)
1971	-20.0 C (-4.0 F)
1972	-25.0 C (-13.0 F)
1973	-21.7 C (-7.1 F)
1974	-25.6 C (-14.1 F)
1975	-24.4 C (-11.9 F)
1976	-23.3 C (-9.9 F)
1977	-30.0 C (-22.0 F)
1978	-21.1 C (-6.0 F)
1979	-25.6 C (-14.1 F)
1980	-25.0 C (-13.0 F)
1981	-25.6 C (-14.1 F)
1982	-29.4 C (-20.9 F)
1983	-25.6 C (-14.1 F)
1984	-23.9 C (-11.0 F)
1985	-32.8 C (-27.0 F)
1986	-23.3 C (-9.9 F)
1987	-13.3 C (8.1 F)
1988	-22.2 C (-8.0 F)
1989	-30.0 C (-22.0 F)
1990	-23.9 C (-11.0 F)
1991	-20.6 C (-5.1 F)
1992	-21.7 C (-7.1 F)
1993	-23.3 C (-9.9 F)
1994	-28.9 C (-20.0 F)
1995	-23.3 C (-9.9 F)
1996	-28.3 C (-18.9 F)
1997	-25.0 C (-13.0 F)
1998	-26.1 C (-15.0 F)
1999	-28.9 C (-20.0 F)
2000	-23.9 C (-11.0 F)
2001	-20.6 C (-5.1 F)
2002	-21.1 C (-6.0 F)
2003	-21.7 C (-7.1 F)
2004	-25.0 C (-13.0 F)
2005	-21.1 C (-6.0 F)
2006	-17.8 C (0.0 F)
2007	-22.2 C (-8.0 F)
2008	-22.2 C (-8.0 F)
2009	-26.7 C (-16.1 F)
2010	-21.7 C (-7.1 F)
2011	-21.1 C (-6.0 F)
2012	-13.3 C (8.1 F)
2013	-18.9 C (-2.0 F)
2014	-26.1 C (-15.0 F)
2015	-22.2 C (-8.0 F)
2016	-20.0 C (-4.0 F)
2017	-23.3 C (-9.9 F)
2018	-26.1 C (-15.0 F)
2019	-26.1 C (-15.0 F)
2020	-21.7 C (-7.1 F)
2021	-24.4 C (-11.9 F)
2022	-23.9 C (-11.0 F)
2023	-15.6 C (3.9 F)
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Rantoul, 1893 to 2026. The record is 156.2 mm (6.1 in) in 1977, marked on the chart; the median year is 61.0 mm (2.4 in).

Wettest day (Rx1day) at Rantoul by year
Year	Wettest day (Rx1day)
1893	44.5 mm (1.8 in)
1894	38.1 mm (1.5 in)
1895	73.2 mm (2.9 in)
1896	86.4 mm (3.4 in)
1897	61.5 mm (2.4 in)
1898	60.2 mm (2.4 in)
1899	51.6 mm (2.0 in)
1900	129.3 mm (5.1 in)
1901	63.2 mm (2.5 in)
1902	84.6 mm (3.3 in)
1903	59.2 mm (2.3 in)
1904	51.8 mm (2.0 in)
1905	40.6 mm (1.6 in)
1906	60.2 mm (2.4 in)
1907	50.8 mm (2.0 in)
1908	42.7 mm (1.7 in)
1909	57.2 mm (2.3 in)
1910	46.2 mm (1.8 in)
1911	53.3 mm (2.1 in)
1912	55.6 mm (2.2 in)
1913	59.4 mm (2.3 in)
1941	67.3 mm (2.6 in)
1942	54.1 mm (2.1 in)
1943	83.8 mm (3.3 in)
1944	47.0 mm (1.9 in)
1945	44.7 mm (1.8 in)
1946	58.7 mm (2.3 in)
1947	51.3 mm (2.0 in)
1948	38.1 mm (1.5 in)
1949	71.1 mm (2.8 in)
1950	66.0 mm (2.6 in)
1951	66.0 mm (2.6 in)
1952	44.5 mm (1.8 in)
1953	107.7 mm (4.2 in)
1954	47.5 mm (1.9 in)
1955	66.8 mm (2.6 in)
1956	152.7 mm (6.0 in)
1957	64.5 mm (2.5 in)
1958	75.9 mm (3.0 in)
1959	66.3 mm (2.6 in)
1960	51.1 mm (2.0 in)
1961	71.1 mm (2.8 in)
1962	62.2 mm (2.4 in)
1963	51.8 mm (2.0 in)
1964	35.1 mm (1.4 in)
1965	45.7 mm (1.8 in)
1966	72.6 mm (2.9 in)
1967	54.9 mm (2.2 in)
1968	105.4 mm (4.1 in)
1969	59.7 mm (2.4 in)
1970	98.3 mm (3.9 in)
1971	45.2 mm (1.8 in)
1972	65.0 mm (2.6 in)
1973	56.4 mm (2.2 in)
1974	63.2 mm (2.5 in)
1975	78.2 mm (3.1 in)
1976	42.4 mm (1.7 in)
1977	156.2 mm (6.1 in)
1978	48.3 mm (1.9 in)
1979	77.2 mm (3.0 in)
1980	63.5 mm (2.5 in)
1981	61.2 mm (2.4 in)
1982	61.0 mm (2.4 in)
1983	101.6 mm (4.0 in)
1984	66.0 mm (2.6 in)
1985	55.4 mm (2.2 in)
1986	71.4 mm (2.8 in)
1987	128.3 mm (5.1 in)
1988	47.0 mm (1.9 in)
1989	82.6 mm (3.3 in)
1990	80.0 mm (3.1 in)
1991	61.0 mm (2.4 in)
1992	61.2 mm (2.4 in)
1993	63.5 mm (2.5 in)
1994	114.3 mm (4.5 in)
1995	82.6 mm (3.3 in)
1996	50.3 mm (2.0 in)
1997	67.6 mm (2.7 in)
1998	39.6 mm (1.6 in)
1999	48.3 mm (1.9 in)
2000	37.6 mm (1.5 in)
2001	51.3 mm (2.0 in)
2002	64.8 mm (2.6 in)
2003	54.6 mm (2.1 in)
2004	94.0 mm (3.7 in)
2005	61.0 mm (2.4 in)
2006	50.8 mm (2.0 in)
2007	47.2 mm (1.9 in)
2008	101.6 mm (4.0 in)
2009	51.3 mm (2.0 in)
2010	42.4 mm (1.7 in)
2011	52.1 mm (2.1 in)
2012	79.0 mm (3.1 in)
2013	61.0 mm (2.4 in)
2014	54.9 mm (2.2 in)
2015	60.5 mm (2.4 in)
2016	66.0 mm (2.6 in)
2017	86.4 mm (3.4 in)
2018	97.8 mm (3.9 in)
2019	116.8 mm (4.6 in)
2020	94.0 mm (3.7 in)
2021	129.5 mm (5.1 in)
2022	47.8 mm (1.9 in)
2023	67.6 mm (2.7 in)
2024	67.6 mm (2.7 in)
2025	33.3 mm (1.3 in)
2026	98.3 mm (3.9 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rantoul, 1893 to 2026. The record is 238.8 mm (9.4 in) in 1977, marked on the chart; the median year is 98.9 mm (3.9 in).

Wettest five days (Rx5day) at Rantoul by year
Year	Wettest five days (Rx5day)
1893	63.8 mm (2.5 in)
1894	87.5 mm (3.4 in)
1895	132.2 mm (5.2 in)
1896	131.6 mm (5.2 in)
1897	63.7 mm (2.5 in)
1898	105.8 mm (4.2 in)
1899	72.4 mm (2.9 in)
1900	134.4 mm (5.3 in)
1901	72.1 mm (2.8 in)
1902	139.2 mm (5.5 in)
1903	105.7 mm (4.2 in)
1904	84.1 mm (3.3 in)
1905	63.5 mm (2.5 in)
1906	113.5 mm (4.5 in)
1907	105.2 mm (4.1 in)
1908	100.9 mm (4.0 in)
1909	57.2 mm (2.3 in)
1910	89.9 mm (3.5 in)
1911	96.3 mm (3.8 in)
1912	60.8 mm (2.4 in)
1913	154.5 mm (6.1 in)
1941	111.0 mm (4.4 in)
1942	75.2 mm (3.0 in)
1943	112.8 mm (4.4 in)
1944	98.8 mm (3.9 in)
1945	61.2 mm (2.4 in)
1946	89.9 mm (3.5 in)
1947	63.5 mm (2.5 in)
1948	78.8 mm (3.1 in)
1949	160.3 mm (6.3 in)
1950	119.3 mm (4.7 in)
1951	95.4 mm (3.8 in)
1952	80.5 mm (3.2 in)
1953	121.2 mm (4.8 in)
1954	77.0 mm (3.0 in)
1955	120.3 mm (4.7 in)
1956	201.8 mm (7.9 in)
1957	102.3 mm (4.0 in)
1958	144.2 mm (5.7 in)
1959	92.5 mm (3.6 in)
1960	90.3 mm (3.6 in)
1961	93.5 mm (3.7 in)
1962	166.7 mm (6.6 in)
1963	69.4 mm (2.7 in)
1964	52.4 mm (2.1 in)
1965	76.4 mm (3.0 in)
1966	125.7 mm (4.9 in)
1967	91.5 mm (3.6 in)
1968	126.4 mm (5.0 in)
1969	90.9 mm (3.6 in)
1970	130.3 mm (5.1 in)
1971	85.6 mm (3.4 in)
1972	68.3 mm (2.7 in)
1973	105.6 mm (4.2 in)
1974	100.1 mm (3.9 in)
1975	98.4 mm (3.9 in)
1976	64.0 mm (2.5 in)
1977	238.8 mm (9.4 in)
1978	64.0 mm (2.5 in)
1979	125.4 mm (4.9 in)
1980	101.4 mm (4.0 in)
1981	82.3 mm (3.2 in)
1982	97.1 mm (3.8 in)
1983	132.1 mm (5.2 in)
1984	83.8 mm (3.3 in)
1985	78.1 mm (3.1 in)
1986	106.0 mm (4.2 in)
1987	166.4 mm (6.6 in)
1988	55.4 mm (2.2 in)
1989	107.7 mm (4.2 in)
1990	108.7 mm (4.3 in)
1991	69.1 mm (2.7 in)
1992	104.7 mm (4.1 in)
1993	127.5 mm (5.0 in)
1994	142.5 mm (5.6 in)
1995	123.2 mm (4.9 in)
1996	60.9 mm (2.4 in)
1997	75.5 mm (3.0 in)
1998	103.0 mm (4.1 in)
1999	66.6 mm (2.6 in)
2000	68.9 mm (2.7 in)
2001	93.7 mm (3.7 in)
2002	114.3 mm (4.5 in)
2003	154.9 mm (6.1 in)
2004	108.7 mm (4.3 in)
2005	99.1 mm (3.9 in)
2006	97.1 mm (3.8 in)
2007	69.6 mm (2.7 in)
2008	162.6 mm (6.4 in)
2009	92.4 mm (3.6 in)
2010	98.9 mm (3.9 in)
2011	95.0 mm (3.7 in)
2012	99.9 mm (3.9 in)
2013	86.1 mm (3.4 in)
2014	95.5 mm (3.8 in)
2015	105.7 mm (4.2 in)
2016	105.2 mm (4.1 in)
2017	99.4 mm (3.9 in)
2018	126.0 mm (5.0 in)
2019	118.8 mm (4.7 in)
2020	138.4 mm (5.4 in)
2021	139.9 mm (5.5 in)
2022	93.5 mm (3.7 in)
2023	93.5 mm (3.7 in)
2024	103.4 mm (4.1 in)
2025	54.5 mm (2.1 in)
2026	182.6 mm (7.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rantoul, 1893 to 2026. The record is 39 days in 1956, marked on the chart; the median year is 20 days.

Longest dry spell (CDD) at Rantoul by year
Year	Longest dry spell (CDD)
1893	29 days
1894	22 days
1895	24 days
1896	13 days
1897	24 days
1898	21 days
1899	14 days
1900	20 days
1901	24 days
1902	19 days
1903	16 days
1904	32 days
1905	18 days
1906	12 days
1907	21 days
1908	26 days
1909	16 days
1910	21 days
1911	19 days
1912	18 days
1913	17 days
1941	20 days
1942	28 days
1943	27 days
1944	26 days
1945	24 days
1946	17 days
1947	33 days
1948	29 days
1949	21 days
1950	19 days
1951	16 days
1952	20 days
1953	24 days
1954	22 days
1955	20 days
1956	39 days
1957	23 days
1958	23 days
1959	29 days
1960	18 days
1961	19 days
1962	20 days
1963	22 days
1964	36 days
1965	14 days
1966	19 days
1967	18 days
1968	23 days
1969	26 days
1970	17 days
1971	23 days
1972	15 days
1973	14 days
1974	21 days
1975	15 days
1976	34 days
1977	28 days
1978	21 days
1979	38 days
1980	27 days
1981	25 days
1982	18 days
1983	31 days
1984	14 days
1985	14 days
1986	34 days
1987	11 days
1988	31 days
1989	25 days
1990	17 days
1991	20 days
1992	18 days
1993	15 days
1994	19 days
1995	34 days
1996	20 days
1997	16 days
1998	35 days
1999	19 days
2000	19 days
2001	25 days
2002	23 days
2003	14 days
2004	23 days
2005	24 days
2006	17 days
2007	18 days
2008	14 days
2009	16 days
2010	18 days
2011	14 days
2012	16 days
2013	18 days
2014	18 days
2015	37 days
2016	15 days
2017	20 days
2018	22 days
2019	15 days
2020	21 days
2021	23 days
2022	19 days
2023	22 days
2024	17 days
2025	19 days
2026	23 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.

Frost Dates and Growing Season

81 years with a frost

Across 81 years with a frost, the median last spring frost at Rantoul falls on 21 April and the median first autumn frost on 17 October, which leaves a median of 177 days between them.

In 1994 to 2023 the median growing season was 178 days. That is 3 days fewer than in 1897 to 1965.

Fitted over all years, the growing season changes by +0.3 days per decade at this station.

Frost dates and growing season at Rantoul
Measure	Median, all years	Earliest period (1897 to 1965)	Recent period (1994 to 2023)	Recent against earliest	Fitted trend
Last spring frost	21 April	21 April	18 April	3 days earlier	-0.6 days per decade
First autumn frost	17 October	24 October	13 October	11 days earlier	-0.4 days per decade
Growing days	177 days	181 days	178 days	3 days fewer	+0.3 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

98 years, 1893 to 2025

A day with at least 60.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 158.8 mm (6.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Rantoul: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	60.8 mm (2.4 in)
5 years	80.8 mm (3.2 in)
10 years	96.2 mm (3.8 in)
25 years	118.6 mm (4.7 in)
50 years	137.6 mm (5.4 in)
100 years	158.8 mm (6.3 in)	Longer than the 98 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, 98 years of values from 1893 to 2025.

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: 156.2 mm (6.1 in) in 1977; 152.7 mm (6.0 in) in 1956; 129.5 mm (5.1 in) in 2021.

Station Changes

3 suspected

3 changes were suspected in the annual mean temperature of Rantoul, at 1997, 2003 and 2019. Each is measured against neighbouring stations.

Relative to 5 neighbouring stations, the station's annual mean temperature from 1997 ran 0.5 C (0.9 F) lower than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2003 ran 0.8 C (1.4 F) higher than in the years before (possible change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2019 ran 0.4 C (0.8 F) lower than in the years before (likely change).

Suspected changes in the annual mean temperature at Rantoul, against neighbouring stations
Year	Shift (C)	Shift (F)	Strength	Neighbours
1997	-0.5	-0.9	likely	5
2003	+0.8	+1.4	possible	5
2019	-0.4	-0.8	likely	5

Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.

Climate Twins

2009 to 2023 against 1961 to 1990

Over 2009 to 2023, Rantoul had a mean temperature of 11.5 C (52.6 F) and 1,006.1 mm (39.6 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Indianapolis SE Side (United States, 190 km away), Indianapolis (United States, 174 km away) and Terre Haute Indiana State (United States, 113 km away).

Climate twins of Rantoul: stations whose 1961 to 1990 climate is closest to its 2009 to 2023 climate
Twin station	Country	Distance away	Mean temperature, 1961-1990	Rain a year, 1961-1990	Climate difference
Indianapolis SE Side	United States	190 km (118 mi)	11.2 C (52.2 F)	977.3 mm (38.5 in)	0.61
Indianapolis	United States	174 km (108 mi)	11.2 C (52.2 F)	1,015.6 mm (40.0 in)	0.62
Terre Haute Indiana State	United States	113 km (70 mi)	11.3 C (52.3 F)	1,036.8 mm (40.8 in)	0.63

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

Data for Rantoul standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Rantoul 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).