Roberts 3 N Weather Records (USC00117336)

Record envelope, standing records and threshold days for Roberts 3 N (USC00117336), Illinois, United States, with 58 years of record.

Key Facts for Roberts 3 N

Roberts 3 N (USC00117336) is a weather station in Illinois, United States at 40.67 latitude and -88.18 longitude, 226 m (741 ft) above sea level.
The station reports from 1911 to 1968, 58 years of record.
1,464 records set at Roberts 3 N still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Roberts 3 N set a daily record precipitation of 67.8 mm (2.7 in) on 25 June 1968.

About the Station

Location: Illinois, United States, 40.67 latitude, -88.18 longitude.
Elevation: 226 m (741 ft).
Period of record: 1911 to 1968, 58 years.
Eligible elements: prcp.

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 Roberts 3 N. 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 Roberts 3 N, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	19.4 C (66.9 F)	-27.8 C (-18.0 F)	n/a	n/a
Feb	21.1 C (70.0 F)	-26.7 C (-16.1 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Apr	30.6 C (87.1 F)	-8.3 C (17.1 F)	n/a	n/a
May	35.0 C (95.0 F)	-3.9 C (25.0 F)	n/a	n/a
Jun	39.4 C (102.9 F)	3.3 C (37.9 F)	n/a	n/a
Jul	40.0 C (104.0 F)	6.1 C (43.0 F)	n/a	n/a
Aug	38.9 C (102.0 F)	2.8 C (37.0 F)	n/a	n/a
Sep	39.4 C (102.9 F)	-1.1 C (30.0 F)	n/a	n/a
Oct	33.3 C (91.9 F)	-6.7 C (19.9 F)	n/a	n/a
Nov	27.2 C (81.0 F)	-22.2 C (-8.0 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-27.2 C (-17.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Roberts 3 N still stand. 1963 holds the most, with 104.

Standing records at Roberts 3 N by the year they were set
Year set	Standing records
1949	66
1950	94
1951	74
1952	71
1953	69
1954	101
1955	76
1956	61
1957	62
1958	71
1959	90
1960	81
1961	61
1962	60
1963	104
1964	75
1965	58
1966	66
1967	61
1968	63

Wettest Day of Each Month

May: 128.3 mm (5.1 in)

The wettest day on record for each calendar month at Roberts 3 N. The most was 128.3 mm (5.1 in) on 18 May 1927.

Record daily precipitation for each month at Roberts 3 N
Month	Record daily precipitation (mm)	Date
Jan	55.9 mm (2.2 in)	26 January 1967
Feb	53.1 mm (2.1 in)	10 February 1939
Mar	82.0 mm (3.2 in)	16 March 1942
Apr	87.9 mm (3.5 in)	27 April 1959
May	128.3 mm (5.1 in)	18 May 1927
Jun	68.1 mm (2.7 in)	20 June 1964
Jul	99.1 mm (3.9 in)	9 July 1951
Aug	100.3 mm (3.9 in)	3 August 1943
Sep	109.2 mm (4.3 in)	26 September 1933
Oct	58.7 mm (2.3 in)	5 October 1955
Nov	59.9 mm (2.4 in)	2 November 1936
Dec	78.0 mm (3.1 in)	21 December 1949

Period of Record Coverage

1949 to 1968

20 years of record at Roberts 3 N, 1949 to 1968. 1 years have data for under 90 percent of days and are left out of rankings: 1968.

Days with data per year at Roberts 3 N
Year	Days with data	Share of year	Complete
1949	364	100%	Yes
1950	360	99%	Yes
1951	365	100%	Yes
1952	363	99%	Yes
1953	365	100%	Yes
1954	363	99%	Yes
1955	355	97%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	365	100%	Yes
1962	363	99%	Yes
1963	365	100%	Yes
1964	359	98%	Yes
1965	362	99%	Yes
1966	363	99%	Yes
1967	363	99%	Yes
1968	303	83%	No

Latest Records

Latest records at Roberts 3 N
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 June 1968	Roberts 3 N, US	daily rain	67.8 mm (2.7 in)	35.5 mm (1.4 in)	33 years	44 of 100 (Notable)
4 April 1968	Roberts 3 N, US	daily rain	51.8 mm (2.0 in)	11.7 mm (0.5 in)	18 years	20 of 100 (Routine)
2 February 1968	Roberts 3 N, US	daily rain	13.5 mm (0.5 in)	5.9 mm (0.23 in)	52 years	20 of 100 (Routine)
1 February 1968	Roberts 3 N, US	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	2 years	31 of 100 (Routine)
16 October 1967	Roberts 3 N, US	daily rain	34.0 mm (1.3 in)	2.2 mm (0.09 in)	33 years	17 of 100 (Routine)
27 July 1967	Roberts 3 N, US	daily rain	64.0 mm (2.5 in)	19.3 mm (0.8 in)	16 years	21 of 100 (Routine)
26 January 1967	Roberts 3 N, US	monthly rain	55.9 mm (2.2 in)	2.6 mm (0.10 in)	2 years	18 of 100 (Routine)
27 November 1966	Roberts 3 N, US	daily rain	31.0 mm (1.2 in)	14.5 mm (0.6 in)	20 years	28 of 100 (Routine)
15 October 1966	Roberts 3 N, US	daily rain	19.6 mm (0.8 in)	9.4 mm (0.37 in)	23 years	19 of 100 (Routine)
22 August 1966	Roberts 3 N, US	daily rain	18.5 mm (0.7 in)	2.8 mm (0.11 in)	0 years	6 of 100 (Routine)
10 August 1966	Roberts 3 N, US	daily rain	34.0 mm (1.3 in)	11.1 mm (0.4 in)	40 years	24 of 100 (Routine)
25 December 1965	Roberts 3 N, US	daily rain	31.0 mm (1.2 in)	17.0 mm (0.7 in)	20 years	33 of 100 (Routine)
22 September 1965	Roberts 3 N, US	daily rain	53.3 mm (2.1 in)	16.2 mm (0.6 in)	32 years	26 of 100 (Routine)
15 September 1965	Roberts 3 N, US	daily rain	28.4 mm (1.1 in)	9.6 mm (0.38 in)	34 years	22 of 100 (Routine)
22 August 1965	Roberts 3 N, US	daily rain	15.7 mm (0.6 in)	1.5 mm (0.06 in)	48 years	20 of 100 (Routine)
2 July 1965	Roberts 3 N, US	daily rain	38.6 mm (1.5 in)	4.3 mm (0.17 in)	27 years	15 of 100 (Routine)
5 May 1965	Roberts 3 N, US	daily rain	64.8 mm (2.6 in)	43.7 mm (1.7 in)	51 years	56 of 100 (Notable)
8 April 1965	Roberts 3 N, US	daily rain	45.5 mm (1.8 in)	22.6 mm (0.9 in)	36 years	34 of 100 (Routine)
17 March 1965	Roberts 3 N, US	daily rain	22.9 mm (0.9 in)	10.7 mm (0.4 in)	19 years	20 of 100 (Routine)
1 February 1965	Roberts 3 N, US	daily rain	12.7 mm (0.5 in)	7.6 mm (0.30 in)	43 years	20 of 100 (Routine)

Climate Trend

18 complete years, 1949 to 1967

One stripe for each of 18 complete years at Roberts 3 N, 1949 to 1967. Blue stripes are years cooler than the station's own mean of 10.6 C (51.1 F); red stripes are warmer. The coolest year was 1950, at 9.3 C (48.7 F), and the warmest was 1954, at 12.0 C (53.7 F). The strongest colour marks a difference of 1.5 C (2.7 F).

Annual mean temperature at Roberts 3 N as warming stripes, 1949 to 1967
Year	Annual mean temperature	Difference from the station mean
1949	11.3 C	+0.66 C
1950	9.3 C	-1.29 C
1951	9.6 C	-1.01 C
1952	11.2 C	+0.58 C
1954	12.0 C	+1.45 C
1955	11.1 C	+0.49 C
1956	11.2 C	+0.63 C
1957	10.6 C	+0.02 C
1958	9.8 C	-0.76 C
1959	10.9 C	+0.29 C
1960	9.9 C	-0.73 C
1961	10.5 C	-0.06 C
1962	10.2 C	-0.36 C
1963	10.1 C	-0.54 C
1964	11.3 C	+0.75 C
1965	11.1 C	+0.49 C
1966	10.3 C	-0.25 C
1967	10.2 C	-0.38 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1911 to 1968

Yearly extremes at Roberts 3 N: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.0 C (104.0 F)	1954	35.6 C (96.1 F)	20
Coldest night (TNn)	-27.8 C (-18.0 F)	1957	-23.6 C (-10.5 F)	20
Wettest day (Rx1day)	128.3 mm (5.1 in)	1927	58.6 mm (2.3 in)	58
Wettest five days (Rx5day)	154.6 mm (6.1 in)	1933	88.7 mm (3.5 in)	58
Longest dry spell (CDD)	38 days	1933	23 days	58

Hottest day (TXx)

The hottest day of the year at Roberts 3 N, 1911 to 1968. The record is 40.0 C (104.0 F) in 1954, marked on the chart; the median year is 35.6 C (96.1 F).

Hottest day (TXx) at Roberts 3 N by year
Year	Hottest day (TXx)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	35.6 C (96.1 F)
1950	32.8 C (91.0 F)
1951	33.9 C (93.0 F)
1952	37.8 C (100.0 F)
1953	39.4 C (102.9 F)
1954	40.0 C (104.0 F)
1955	37.2 C (99.0 F)
1956	35.6 C (96.1 F)
1957	34.4 C (93.9 F)
1958	33.3 C (91.9 F)
1959	35.6 C (96.1 F)
1960	36.1 C (97.0 F)
1961	33.3 C (91.9 F)
1962	34.4 C (93.9 F)
1963	36.7 C (98.1 F)
1964	36.7 C (98.1 F)
1965	35.6 C (96.1 F)
1966	36.7 C (98.1 F)
1967	35.0 C (95.0 F)
1968	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Roberts 3 N, 1911 to 1968. The record is -27.8 C (-18.0 F) in 1957, marked on the chart; the median year is -23.6 C (-10.5 F).

Coldest night (TNn) at Roberts 3 N by year
Year	Coldest night (TNn)
1911	n/a
1912	n/a
1913	n/a
1914	n/a
1915	n/a
1916	n/a
1917	n/a
1918	n/a
1919	n/a
1920	n/a
1921	n/a
1922	n/a
1923	n/a
1924	n/a
1925	n/a
1926	n/a
1927	n/a
1928	n/a
1929	n/a
1930	n/a
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	n/a
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	n/a
1949	-19.4 C (-2.9 F)
1950	-23.9 C (-11.0 F)
1951	-26.7 C (-16.1 F)
1952	-18.9 C (-2.0 F)
1953	-19.4 C (-2.9 F)
1954	-20.6 C (-5.1 F)
1955	-23.9 C (-11.0 F)
1956	-19.4 C (-2.9 F)
1957	-27.8 C (-18.0 F)
1958	-26.1 C (-15.0 F)
1959	-23.3 C (-9.9 F)
1960	-27.2 C (-17.0 F)
1961	-23.9 C (-11.0 F)
1962	-22.8 C (-9.0 F)
1963	-27.8 C (-18.0 F)
1964	-19.4 C (-2.9 F)
1965	-22.2 C (-8.0 F)
1966	-25.6 C (-14.1 F)
1967	-23.3 C (-9.9 F)
1968	-26.7 C (-16.1 F)

Wettest day (Rx1day)

The wettest day of the year at Roberts 3 N, 1911 to 1968. The record is 128.3 mm (5.1 in) in 1927, marked on the chart; the median year is 58.6 mm (2.3 in).

Wettest day (Rx1day) at Roberts 3 N by year
Year	Wettest day (Rx1day)
1911	48.0 mm (1.9 in)
1912	75.4 mm (3.0 in)
1913	41.1 mm (1.6 in)
1914	39.4 mm (1.6 in)
1915	47.0 mm (1.9 in)
1916	50.8 mm (2.0 in)
1917	63.5 mm (2.5 in)
1918	50.0 mm (2.0 in)
1919	49.8 mm (2.0 in)
1920	44.5 mm (1.8 in)
1921	59.2 mm (2.3 in)
1922	43.2 mm (1.7 in)
1923	44.2 mm (1.7 in)
1924	54.6 mm (2.1 in)
1925	60.5 mm (2.4 in)
1926	89.9 mm (3.5 in)
1927	128.3 mm (5.1 in)
1928	53.3 mm (2.1 in)
1929	72.4 mm (2.9 in)
1930	43.2 mm (1.7 in)
1931	47.2 mm (1.9 in)
1932	68.6 mm (2.7 in)
1933	109.2 mm (4.3 in)
1934	44.5 mm (1.8 in)
1935	44.5 mm (1.8 in)
1936	59.9 mm (2.4 in)
1937	66.3 mm (2.6 in)
1938	64.5 mm (2.5 in)
1939	61.0 mm (2.4 in)
1940	26.7 mm (1.1 in)
1941	55.9 mm (2.2 in)
1942	82.0 mm (3.2 in)
1943	100.3 mm (3.9 in)
1944	77.0 mm (3.0 in)
1945	48.3 mm (1.9 in)
1946	91.4 mm (3.6 in)
1947	57.9 mm (2.3 in)
1948	62.2 mm (2.4 in)
1949	78.0 mm (3.1 in)
1950	45.2 mm (1.8 in)
1951	99.1 mm (3.9 in)
1952	33.0 mm (1.3 in)
1953	40.6 mm (1.6 in)
1954	50.3 mm (2.0 in)
1955	63.5 mm (2.5 in)
1956	49.3 mm (1.9 in)
1957	64.5 mm (2.5 in)
1958	61.5 mm (2.4 in)
1959	87.9 mm (3.5 in)
1960	56.9 mm (2.2 in)
1961	66.3 mm (2.6 in)
1962	57.4 mm (2.3 in)
1963	40.1 mm (1.6 in)
1964	68.1 mm (2.7 in)
1965	64.8 mm (2.6 in)
1966	43.2 mm (1.7 in)
1967	64.0 mm (2.5 in)
1968	67.8 mm (2.7 in)

Wettest five days (Rx5day)

The wettest five days of the year at Roberts 3 N, 1911 to 1968. The record is 154.6 mm (6.1 in) in 1933, marked on the chart; the median year is 88.7 mm (3.5 in).

Wettest five days (Rx5day) at Roberts 3 N by year
Year	Wettest five days (Rx5day)
1911	79.0 mm (3.1 in)
1912	83.5 mm (3.3 in)
1913	142.0 mm (5.6 in)
1914	63.5 mm (2.5 in)
1915	69.1 mm (2.7 in)
1916	81.0 mm (3.2 in)
1917	123.2 mm (4.9 in)
1918	73.2 mm (2.9 in)
1919	78.5 mm (3.1 in)
1920	116.4 mm (4.6 in)
1921	63.0 mm (2.5 in)
1922	86.3 mm (3.4 in)
1923	88.6 mm (3.5 in)
1924	72.4 mm (2.9 in)
1925	97.8 mm (3.9 in)
1926	115.5 mm (4.5 in)
1927	147.3 mm (5.8 in)
1928	99.0 mm (3.9 in)
1929	88.7 mm (3.5 in)
1930	64.8 mm (2.6 in)
1931	94.0 mm (3.7 in)
1932	83.8 mm (3.3 in)
1933	154.6 mm (6.1 in)
1934	83.3 mm (3.3 in)
1935	85.9 mm (3.4 in)
1936	92.0 mm (3.6 in)
1937	66.3 mm (2.6 in)
1938	89.9 mm (3.5 in)
1939	75.5 mm (3.0 in)
1940	47.1 mm (1.9 in)
1941	112.0 mm (4.4 in)
1942	95.3 mm (3.8 in)
1943	140.2 mm (5.5 in)
1944	117.7 mm (4.6 in)
1945	89.9 mm (3.5 in)
1946	91.4 mm (3.6 in)
1947	75.2 mm (3.0 in)
1948	88.1 mm (3.5 in)
1949	113.8 mm (4.5 in)
1950	104.9 mm (4.1 in)
1951	118.6 mm (4.7 in)
1952	62.7 mm (2.5 in)
1953	85.5 mm (3.4 in)
1954	74.9 mm (2.9 in)
1955	72.4 mm (2.9 in)
1956	86.9 mm (3.4 in)
1957	120.0 mm (4.7 in)
1958	117.7 mm (4.6 in)
1959	104.1 mm (4.1 in)
1960	89.2 mm (3.5 in)
1961	103.9 mm (4.1 in)
1962	115.4 mm (4.5 in)
1963	47.0 mm (1.9 in)
1964	93.5 mm (3.7 in)
1965	91.9 mm (3.6 in)
1966	81.8 mm (3.2 in)
1967	75.0 mm (3.0 in)
1968	86.2 mm (3.4 in)

Longest dry spell (CDD)

The longest dry spell of the year at Roberts 3 N, 1911 to 1968. The record is 38 days in 1933, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Roberts 3 N by year
Year	Longest dry spell (CDD)
1911	13 days
1912	18 days
1913	23 days
1914	24 days
1915	28 days
1916	25 days
1917	30 days
1918	13 days
1919	25 days
1920	23 days
1921	27 days
1922	16 days
1923	18 days
1924	22 days
1925	27 days
1926	14 days
1927	21 days
1928	16 days
1929	22 days
1930	33 days
1931	19 days
1932	22 days
1933	38 days
1934	26 days
1935	19 days
1936	32 days
1937	24 days
1938	24 days
1939	26 days
1940	27 days
1941	28 days
1942	28 days
1943	27 days
1944	28 days
1945	22 days
1946	24 days
1947	26 days
1948	27 days
1949	22 days
1950	19 days
1951	16 days
1952	21 days
1953	22 days
1954	32 days
1955	15 days
1956	32 days
1957	22 days
1958	22 days
1959	18 days
1960	20 days
1961	18 days
1962	33 days
1963	28 days
1964	37 days
1965	15 days
1966	19 days
1967	19 days
1968	34 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

56 years, 1912 to 1967

A day with at least 56.9 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 129.2 mm (5.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Roberts 3 N: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	56.9 mm (2.2 in)
5 years	74.1 mm (2.9 in)
10 years	86.3 mm (3.4 in)
25 years	102.7 mm (4.0 in)
50 years	115.6 mm (4.6 in)
100 years	129.2 mm (5.1 in)	Longer than the 56 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, 56 years of values from 1912 to 1967.

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: 128.3 mm (5.1 in) in 1927; 109.2 mm (4.3 in) in 1933; 100.3 mm (3.9 in) in 1943.

Download the Data

Data for Roberts 3 N standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Roberts 3 N 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 2026-10-17 (17 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).