College Hill Lock 11 Weather Records (USC00151704)

Record envelope, standing records and threshold days for College Hill Lock 11 (USC00151704), Kentucky, United States, with 59 years of record.

Key Facts for College Hill Lock 11

College Hill Lock 11 (USC00151704) is a weather station in Kentucky, United States at 37.78 latitude and -84.10 longitude, 186 m (610 ft) above sea level.
The station reports from 1923 to 1981, 59 years of record.
0 records set at College Hill Lock 11 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
College Hill Lock 11 set a daily record precipitation of 36.3 mm (1.4 in) on 27 October 1981.

About the Station

Location: Kentucky, United States, 37.78 latitude, -84.10 longitude.
Elevation: 186 m (610 ft).
Period of record: 1923 to 1981, 59 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 College Hill Lock 11. 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 College Hill Lock 11, 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	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at College Hill Lock 11 still stand.

Wettest Day of Each Month

Jul: 143.0 mm (5.6 in)

The wettest day on record for each calendar month at College Hill Lock 11. The most was 143.0 mm (5.6 in) on 14 July 1938.

Record daily precipitation for each month at College Hill Lock 11
Month	Record daily precipitation (mm)	Date
Jan	83.8 mm (3.3 in)	3 January 1924
Feb	62.2 mm (2.4 in)	1 February 1951
Mar	69.9 mm (2.8 in)	6 March 1967
Apr	82.6 mm (3.3 in)	22 April 1972
May	52.6 mm (2.1 in)	14 May 1967
Jun	77.5 mm (3.1 in)	17 June 1953
Jul	143.0 mm (5.6 in)	14 July 1938
Aug	98.3 mm (3.9 in)	20 August 1969
Sep	62.2 mm (2.4 in)	20 September 1954
Oct	48.0 mm (1.9 in)	12 October 1946
Nov	71.1 mm (2.8 in)	27 November 1973
Dec	92.5 mm (3.6 in)	9 December 1978

Latest Records

Latest records at College Hill Lock 11
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 October 1981	College Hill Lock 11, US	daily rain	36.3 mm (1.4 in)	9.1 mm (0.36 in)	3 years	15 of 100 (Routine)
6 August 1981	College Hill Lock 11, US	daily rain	48.3 mm (1.9 in)	10.5 mm (0.4 in)	39 years	23 of 100 (Routine)
3 July 1981	College Hill Lock 11, US	daily rain	40.9 mm (1.6 in)	16.8 mm (0.7 in)	46 years	29 of 100 (Routine)
31 May 1981	College Hill Lock 11, US	daily rain	34.5 mm (1.4 in)	16.0 mm (0.6 in)	8 years	24 of 100 (Routine)
2 February 1981	College Hill Lock 11, US	daily rain	58.9 mm (2.3 in)	20.0 mm (0.8 in)	25 years	32 of 100 (Routine)
18 November 1980	College Hill Lock 11, US	daily rain	58.9 mm (2.3 in)	40.6 mm (1.6 in)	12 years	44 of 100 (Notable)
17 May 1980	College Hill Lock 11, US	daily rain	24.9 mm (1.0 in)	0.8 mm (0.03 in)	55 years	20 of 100 (Routine)
2 March 1980	College Hill Lock 11, US	daily snowfall (Tie)	7.6 cm (3.0 in)	tie	53 years	5 of 100 (Routine)
6 February 1980	College Hill Lock 11, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	9 years	12 of 100 (Routine)
31 January 1980	College Hill Lock 11, US	daily snowfall	11.4 cm (4.5 in)	3.8 cm (1.5 in)	8 years	18 of 100 (Routine)
12 January 1980	College Hill Lock 11, US	daily rain	9.9 mm (0.39 in)	0.2 mm (0.01 in)	29 years	13 of 100 (Routine)
11 December 1979	College Hill Lock 11, US	daily rain	30.5 mm (1.2 in)	16.0 mm (0.6 in)	9 years	20 of 100 (Routine)
24 November 1979	College Hill Lock 11, US	daily rain	32.0 mm (1.3 in)	15.0 mm (0.6 in)	17 years	23 of 100 (Routine)
22 September 1979	College Hill Lock 11, US	daily rain	44.5 mm (1.8 in)	24.2 mm (1.0 in)	28 years	33 of 100 (Routine)
14 September 1979	College Hill Lock 11, US	daily rain	53.1 mm (2.1 in)	34.6 mm (1.4 in)	28 years	42 of 100 (Notable)
27 August 1979	College Hill Lock 11, US	daily rain	42.4 mm (1.7 in)	7.9 mm (0.31 in)	34 years	20 of 100 (Routine)
15 July 1979	College Hill Lock 11, US	daily rain	25.4 mm (1.0 in)	7.6 mm (0.30 in)	10 years	12 of 100 (Routine)
24 June 1979	College Hill Lock 11, US	daily rain	50.8 mm (2.0 in)	24.1 mm (0.9 in)	18 years	32 of 100 (Routine)
4 May 1979	College Hill Lock 11, US	daily rain	25.9 mm (1.0 in)	0.5 mm (0.02 in)	0 years	5 of 100 (Routine)
24 March 1979	College Hill Lock 11, US	daily rain	20.3 mm (0.8 in)	3.0 mm (0.12 in)	42 years	19 of 100 (Routine)

Extremes by Year

1923 to 1981

Yearly extremes at College Hill Lock 11: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	143.0 mm (5.6 in)	1938	60.5 mm (2.4 in)	59
Wettest five days (Rx5day)	182.2 mm (7.2 in)	1978	97.1 mm (3.8 in)	59
Longest dry spell (CDD)	30 days	1953	18 days	59

Wettest day (Rx1day)

The wettest day of the year at College Hill Lock 11, 1923 to 1981. The record is 143.0 mm (5.6 in) in 1938, marked on the chart; the median year is 60.5 mm (2.4 in).

Wettest day (Rx1day) at College Hill Lock 11 by year
Year	Wettest day (Rx1day)
1923	61.0 mm (2.4 in)
1924	83.8 mm (3.3 in)
1925	48.3 mm (1.9 in)
1926	85.1 mm (3.4 in)
1927	50.8 mm (2.0 in)
1928	58.4 mm (2.3 in)
1929	47.0 mm (1.9 in)
1930	48.3 mm (1.9 in)
1931	53.3 mm (2.1 in)
1932	63.5 mm (2.5 in)
1933	45.7 mm (1.8 in)
1934	35.6 mm (1.4 in)
1935	66.0 mm (2.6 in)
1936	62.5 mm (2.5 in)
1937	51.3 mm (2.0 in)
1938	143.0 mm (5.6 in)
1939	60.5 mm (2.4 in)
1940	56.1 mm (2.2 in)
1941	59.9 mm (2.4 in)
1942	68.3 mm (2.7 in)
1943	55.9 mm (2.2 in)
1944	53.8 mm (2.1 in)
1945	70.6 mm (2.8 in)
1946	62.0 mm (2.4 in)
1947	40.6 mm (1.6 in)
1948	64.0 mm (2.5 in)
1949	59.9 mm (2.4 in)
1950	68.3 mm (2.7 in)
1951	85.3 mm (3.4 in)
1952	65.5 mm (2.6 in)
1953	77.5 mm (3.1 in)
1954	62.2 mm (2.4 in)
1955	61.7 mm (2.4 in)
1956	63.5 mm (2.5 in)
1957	70.9 mm (2.8 in)
1958	52.8 mm (2.1 in)
1959	41.1 mm (1.6 in)
1960	47.2 mm (1.9 in)
1961	83.8 mm (3.3 in)
1962	55.9 mm (2.2 in)
1963	46.5 mm (1.8 in)
1964	52.6 mm (2.1 in)
1965	39.4 mm (1.6 in)
1966	52.1 mm (2.1 in)
1967	69.9 mm (2.8 in)
1968	60.7 mm (2.4 in)
1969	98.3 mm (3.9 in)
1970	63.8 mm (2.5 in)
1971	54.1 mm (2.1 in)
1972	82.6 mm (3.3 in)
1973	71.1 mm (2.8 in)
1974	77.5 mm (3.1 in)
1975	62.5 mm (2.5 in)
1976	47.2 mm (1.9 in)
1977	44.7 mm (1.8 in)
1978	115.1 mm (4.5 in)
1979	53.1 mm (2.1 in)
1980	58.9 mm (2.3 in)
1981	58.9 mm (2.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at College Hill Lock 11, 1923 to 1981. The record is 182.2 mm (7.2 in) in 1978, marked on the chart; the median year is 97.1 mm (3.8 in).

Wettest five days (Rx5day) at College Hill Lock 11 by year
Year	Wettest five days (Rx5day)
1923	72.5 mm (2.9 in)
1924	147.1 mm (5.8 in)
1925	76.2 mm (3.0 in)
1926	91.4 mm (3.6 in)
1927	100.3 mm (3.9 in)
1928	91.2 mm (3.6 in)
1929	85.1 mm (3.4 in)
1930	55.4 mm (2.2 in)
1931	118.9 mm (4.7 in)
1932	83.8 mm (3.3 in)
1933	100.2 mm (3.9 in)
1934	68.4 mm (2.7 in)
1935	119.3 mm (4.7 in)
1936	56.9 mm (2.2 in)
1937	127.8 mm (5.0 in)
1938	61.2 mm (2.4 in)
1939	117.4 mm (4.6 in)
1940	111.7 mm (4.4 in)
1941	81.3 mm (3.2 in)
1942	125.7 mm (4.9 in)
1943	111.5 mm (4.4 in)
1944	89.9 mm (3.5 in)
1945	101.6 mm (4.0 in)
1946	90.2 mm (3.6 in)
1947	72.6 mm (2.9 in)
1948	94.5 mm (3.7 in)
1949	76.8 mm (3.0 in)
1950	131.8 mm (5.2 in)
1951	102.3 mm (4.0 in)
1952	80.7 mm (3.2 in)
1953	87.0 mm (3.4 in)
1954	89.4 mm (3.5 in)
1955	101.9 mm (4.0 in)
1956	128.3 mm (5.1 in)
1957	92.0 mm (3.6 in)
1958	115.9 mm (4.6 in)
1959	46.7 mm (1.8 in)
1960	85.3 mm (3.4 in)
1961	106.9 mm (4.2 in)
1962	142.0 mm (5.6 in)
1963	55.6 mm (2.2 in)
1964	97.1 mm (3.8 in)
1965	76.3 mm (3.0 in)
1966	105.2 mm (4.1 in)
1967	100.6 mm (4.0 in)
1968	106.7 mm (4.2 in)
1969	113.4 mm (4.5 in)
1970	124.2 mm (4.9 in)
1971	91.3 mm (3.6 in)
1972	152.6 mm (6.0 in)
1973	134.6 mm (5.3 in)
1974	105.4 mm (4.1 in)
1975	112.2 mm (4.4 in)
1976	90.4 mm (3.6 in)
1977	66.5 mm (2.6 in)
1978	182.2 mm (7.2 in)
1979	111.7 mm (4.4 in)
1980	69.6 mm (2.7 in)
1981	66.3 mm (2.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at College Hill Lock 11, 1923 to 1981. The record is 30 days in 1953, marked on the chart; the median year is 18 days.

Longest dry spell (CDD) at College Hill Lock 11 by year
Year	Longest dry spell (CDD)
1923	8 days
1924	26 days
1925	20 days
1926	18 days
1927	18 days
1928	18 days
1929	13 days
1930	18 days
1931	12 days
1932	15 days
1933	13 days
1934	20 days
1935	18 days
1936	23 days
1937	14 days
1938	21 days
1939	14 days
1940	13 days
1941	21 days
1942	17 days
1943	21 days
1944	18 days
1945	14 days
1946	22 days
1947	15 days
1948	20 days
1949	18 days
1950	16 days
1951	15 days
1952	29 days
1953	30 days
1954	15 days
1955	29 days
1956	16 days
1957	26 days
1958	18 days
1959	19 days
1960	17 days
1961	13 days
1962	12 days
1963	15 days
1964	26 days
1965	17 days
1966	18 days
1967	14 days
1968	18 days
1969	20 days
1970	20 days
1971	20 days
1972	15 days
1973	18 days
1974	15 days
1975	12 days
1976	21 days
1977	17 days
1978	11 days
1979	15 days
1980	15 days
1981	13 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

52 years, 1924 to 1980

A day with at least 59.8 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 110.6 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at College Hill Lock 11: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	59.8 mm (2.4 in)
5 years	72.9 mm (2.9 in)
10 years	81.7 mm (3.2 in)
25 years	93.2 mm (3.7 in)
50 years	101.9 mm (4.0 in)
100 years	110.6 mm (4.4 in)	Longer than the 52 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, 52 years of values from 1924 to 1980.

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: 115.1 mm (4.5 in) in 1978; 98.3 mm (3.9 in) in 1969; 85.3 mm (3.4 in) in 1951.

Download the Data

Data for College Hill Lock 11 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for College Hill Lock 11 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).

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	n/a	n/a	n/a	n/a

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	n/a	n/a	n/a	n/a