Greensboro Lock 7 Weather Records (USC00363503)

Record envelope, standing records and threshold days for Greensboro Lock 7 (USC00363503), Pennsylvania, United States, with 109 years of record.

Key Facts for Greensboro Lock 7

Greensboro Lock 7 (USC00363503) is a weather station in Pennsylvania, United States at 39.78 latitude and -79.92 longitude, 240 m (788 ft) above sea level.
The station reports from 1888 to 1996, 109 years of record.
1,460 records set at Greensboro Lock 7 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Greensboro Lock 7 set a daily record precipitation of 62.5 mm (2.5 in) on 17 September 1996.

About the Station

Location: Pennsylvania, United States, 39.78 latitude, -79.92 longitude.
Elevation: 240 m (788 ft).
Period of record: 1888 to 1996, 109 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 Greensboro Lock 7. 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 Greensboro Lock 7, 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)	-26.1 C (-15.0 F)	n/a	n/a
Feb	21.1 C (70.0 F)	-34.4 C (-29.9 F)	n/a	n/a
Mar	26.7 C (80.1 F)	-16.7 C (1.9 F)	n/a	n/a
Apr	32.2 C (90.0 F)	-13.3 C (8.1 F)	n/a	n/a
May	32.2 C (90.0 F)	-6.7 C (19.9 F)	n/a	n/a
Jun	37.2 C (99.0 F)	5.0 C (41.0 F)	n/a	n/a
Jul	40.6 C (105.1 F)	6.7 C (44.1 F)	n/a	n/a
Aug	36.7 C (98.1 F)	8.9 C (48.0 F)	n/a	n/a
Sep	36.1 C (97.0 F)	0.0 C (32.0 F)	n/a	n/a
Oct	31.7 C (89.1 F)	-6.1 C (21.0 F)	n/a	n/a
Nov	24.4 C (75.9 F)	-9.4 C (15.1 F)	n/a	n/a
Dec	18.9 C (66.0 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,460 standing records

1,460 records at Greensboro Lock 7 still stand. 1898 holds the most, with 333.

All-Time Record Progression

3 new records

3 all-time records were set at Greensboro Lock 7 between 28 July 1934 and 16 October 1954. Each dot is a new record.

When Greensboro Lock 7 set new all-time records
Date	Kind	Detail
1934-07-28	Record daily precipitation	Record daily precipitation 81.3 mm (3.2 in)
1943-07-26	Record daily precipitation	Record daily precipitation 93.0 mm (3.7 in)
1954-10-16	Record daily precipitation	Record daily precipitation 95.5 mm (3.8 in)

Wettest Day of Each Month

Oct: 95.5 mm (3.8 in)

The wettest day on record for each calendar month at Greensboro Lock 7. The most was 95.5 mm (3.8 in) on 16 October 1954.

Record daily precipitation for each month at Greensboro Lock 7
Month	Record daily precipitation (mm)	Date
Jan	41.1 mm (1.6 in)	30 January 1911
Feb	47.2 mm (1.9 in)	16 February 1903
Mar	59.9 mm (2.4 in)	14 March 1933
Apr	51.1 mm (2.0 in)	12 April 1948
May	66.5 mm (2.6 in)	27 May 1987
Jun	87.6 mm (3.4 in)	23 June 1972
Jul	93.0 mm (3.7 in)	26 July 1943
Aug	88.9 mm (3.5 in)	5 August 1948
Sep	72.4 mm (2.9 in)	11 September 1899
Oct	95.5 mm (3.8 in)	16 October 1954
Nov	78.5 mm (3.1 in)	27 November 1985
Dec	63.0 mm (2.5 in)	3 December 1905

Period of Record Coverage

1896 to 1957

7 years of record at Greensboro Lock 7, 1896 to 1957. 3 years have data for under 90 percent of days and are left out of rankings: 1896, 1901, 1957.

Latest Records

Latest records at Greensboro Lock 7
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1996	Greensboro Lock 7, US	daily rain	62.5 mm (2.5 in)	6.6 mm (0.26 in)	67 years	36 of 100 (Notable)
7 September 1996	Greensboro Lock 7, US	daily rain	26.7 mm (1.1 in)	1.3 mm (0.05 in)	6 years	12 of 100 (Routine)
19 July 1996	Greensboro Lock 7, US	daily rain	53.8 mm (2.1 in)	13.7 mm (0.5 in)	49 years	36 of 100 (Notable)
3 February 1996	Greensboro Lock 7, US	daily snowfall	7.6 cm (3.0 in)	2.5 cm (1.0 in)	80 years	39 of 100 (Notable)
19 January 1996	Greensboro Lock 7, US	daily rain	22.4 mm (0.9 in)	4.6 mm (0.18 in)	60 years	20 of 100 (Routine)
13 January 1996	Greensboro Lock 7, US	daily snow depth	43.2 cm (17.0 in)	10.2 cm (4.0 in)	32 years	32 of 100 (Routine)
12 January 1996	Greensboro Lock 7, US	daily snow depth	40.6 cm (16.0 in)	20.3 cm (8.0 in)	90 years	64 of 100 (Major)
11 January 1996	Greensboro Lock 7, US	daily snow depth	40.6 cm (16.0 in)	10.1 cm (4.0 in)	90 years	50 of 100 (Notable)
10 January 1996	Greensboro Lock 7, US	daily snow depth	40.6 cm (16.0 in)	10.1 cm (4.0 in)	90 years	50 of 100 (Notable)
9 January 1996	Greensboro Lock 7, US	daily snow depth	38.1 cm (15.0 in)	5.1 cm (2.0 in)	90 years	43 of 100 (Notable)
8 January 1996	Greensboro Lock 7, US	daily snowfall	27.9 cm (11.0 in)	7.6 cm (3.0 in)	88 years	51 of 100 (Notable)
8 January 1996	Greensboro Lock 7, US	daily snow depth	38.1 cm (15.0 in)	2.5 cm (1.0 in)	90 years	40 of 100 (Notable)
16 November 1995	Greensboro Lock 7, US	daily snowfall	2.8 cm (1.1 in)	0.3 cm (0.1 in)	54 years	20 of 100 (Routine)
24 June 1995	Greensboro Lock 7, US	daily rain	30.2 mm (1.2 in)	10.1 mm (0.4 in)	22 years	25 of 100 (Routine)
12 June 1995	Greensboro Lock 7, US	daily rain	46.5 mm (1.8 in)	16.8 mm (0.7 in)	72 years	46 of 100 (Notable)
22 August 1994	Greensboro Lock 7, US	daily rain	33.0 mm (1.3 in)	3.5 mm (0.14 in)	75 years	35 of 100 (Notable)
18 August 1994	Greensboro Lock 7, US	daily rain	67.3 mm (2.6 in)	32.5 mm (1.3 in)	68 years	60 of 100 (Major)
22 June 1994	Greensboro Lock 7, US	daily rain	49.0 mm (1.9 in)	14.7 mm (0.6 in)	103 years	54 of 100 (Notable)
8 May 1994	Greensboro Lock 7, US	daily rain	42.2 mm (1.7 in)	7.7 mm (0.30 in)	63 years	36 of 100 (Notable)
11 April 1994	Greensboro Lock 7, US	daily rain	39.4 mm (1.6 in)	0.8 mm (0.03 in)	88 years	37 of 100 (Notable)

Extremes by Year

1888 to 1996

Yearly extremes at Greensboro Lock 7: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	40.6 C (105.1 F)	1897	36.7 C (98.1 F)	7
Coldest night (TNn)	-34.4 C (-29.9 F)	1899	-21.7 C (-7.1 F)	6
Wettest day (Rx1day)	95.5 mm (3.8 in)	1954	50.0 mm (2.0 in)	109
Wettest five days (Rx5day)	158.6 mm (6.2 in)	1941	81.1 mm (3.2 in)	109
Longest dry spell (CDD)	38 days	1897	14 days	109

Hottest day (TXx)

The hottest day of the year at Greensboro Lock 7, 1888 to 1996. The record is 40.6 C (105.1 F) in 1897, marked on the chart; the median year is 36.7 C (98.1 F).

Hottest day (TXx) at Greensboro Lock 7 by year
Year	Hottest day (TXx)
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	36.7 C (98.1 F)
1897	40.6 C (105.1 F)
1898	38.9 C (102.0 F)
1899	36.7 C (98.1 F)
1900	35.6 C (96.1 F)
1901	37.2 C (99.0 F)
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
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	n/a
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	25.0 C (77.0 F)
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
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	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
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a

Coldest night (TNn)

The coldest night of the year at Greensboro Lock 7, 1888 to 1996. The record is -34.4 C (-29.9 F) in 1899, marked on the chart; the median year is -21.7 C (-7.1 F).

Coldest night (TNn) at Greensboro Lock 7 by year
Year	Coldest night (TNn)
1888	n/a
1889	n/a
1890	n/a
1891	n/a
1892	n/a
1893	n/a
1894	n/a
1895	n/a
1896	-20.6 C (-5.1 F)
1897	-26.1 C (-15.0 F)
1898	-22.8 C (-9.0 F)
1899	-34.4 C (-29.9 F)
1900	-11.7 C (10.9 F)
1901	-16.7 C (1.9 F)
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	n/a
1909	n/a
1910	n/a
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	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	n/a
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	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
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a

Wettest day (Rx1day)

The wettest day of the year at Greensboro Lock 7, 1888 to 1996. The record is 95.5 mm (3.8 in) in 1954, marked on the chart; the median year is 50.0 mm (2.0 in).

Wettest day (Rx1day) at Greensboro Lock 7 by year
Year	Wettest day (Rx1day)
1888	35.6 mm (1.4 in)
1889	50.8 mm (2.0 in)
1890	61.0 mm (2.4 in)
1891	52.1 mm (2.1 in)
1892	35.6 mm (1.4 in)
1893	40.6 mm (1.6 in)
1894	25.4 mm (1.0 in)
1895	48.3 mm (1.9 in)
1896	39.6 mm (1.6 in)
1897	39.4 mm (1.6 in)
1898	35.6 mm (1.4 in)
1899	72.4 mm (2.9 in)
1900	51.3 mm (2.0 in)
1901	50.8 mm (2.0 in)
1902	50.8 mm (2.0 in)
1903	47.2 mm (1.9 in)
1904	36.6 mm (1.4 in)
1905	63.0 mm (2.5 in)
1906	31.0 mm (1.2 in)
1907	53.3 mm (2.1 in)
1908	45.2 mm (1.8 in)
1909	35.6 mm (1.4 in)
1910	59.4 mm (2.3 in)
1911	45.7 mm (1.8 in)
1912	50.8 mm (2.0 in)
1913	40.6 mm (1.6 in)
1914	44.2 mm (1.7 in)
1915	50.8 mm (2.0 in)
1916	30.5 mm (1.2 in)
1917	35.6 mm (1.4 in)
1918	75.2 mm (3.0 in)
1919	53.3 mm (2.1 in)
1920	70.1 mm (2.8 in)
1921	55.9 mm (2.2 in)
1922	59.2 mm (2.3 in)
1923	68.6 mm (2.7 in)
1924	57.2 mm (2.3 in)
1925	49.5 mm (1.9 in)
1926	38.1 mm (1.5 in)
1927	45.0 mm (1.8 in)
1928	37.3 mm (1.5 in)
1929	70.1 mm (2.8 in)
1930	33.5 mm (1.3 in)
1931	42.7 mm (1.7 in)
1932	48.3 mm (1.9 in)
1933	59.9 mm (2.4 in)
1934	81.3 mm (3.2 in)
1935	37.6 mm (1.5 in)
1936	63.5 mm (2.5 in)
1937	53.3 mm (2.1 in)
1938	32.3 mm (1.3 in)
1939	46.2 mm (1.8 in)
1940	50.8 mm (2.0 in)
1941	67.3 mm (2.6 in)
1942	54.9 mm (2.2 in)
1943	93.0 mm (3.7 in)
1944	69.1 mm (2.7 in)
1945	48.3 mm (1.9 in)
1946	62.2 mm (2.4 in)
1947	45.7 mm (1.8 in)
1948	88.9 mm (3.5 in)
1949	43.2 mm (1.7 in)
1950	58.4 mm (2.3 in)
1951	56.1 mm (2.2 in)
1952	30.2 mm (1.2 in)
1953	58.9 mm (2.3 in)
1954	95.5 mm (3.8 in)
1955	39.1 mm (1.5 in)
1956	73.7 mm (2.9 in)
1957	32.3 mm (1.3 in)
1958	52.6 mm (2.1 in)
1959	46.7 mm (1.8 in)
1960	51.1 mm (2.0 in)
1961	42.7 mm (1.7 in)
1962	30.5 mm (1.2 in)
1963	56.4 mm (2.2 in)
1964	54.6 mm (2.1 in)
1965	39.9 mm (1.6 in)
1966	40.1 mm (1.6 in)
1967	45.7 mm (1.8 in)
1968	52.1 mm (2.1 in)
1969	45.7 mm (1.8 in)
1970	41.1 mm (1.6 in)
1971	73.7 mm (2.9 in)
1972	87.6 mm (3.4 in)
1973	43.9 mm (1.7 in)
1974	43.9 mm (1.7 in)
1975	46.2 mm (1.8 in)
1976	51.6 mm (2.0 in)
1977	40.1 mm (1.6 in)
1978	50.0 mm (2.0 in)
1979	50.0 mm (2.0 in)
1980	47.5 mm (1.9 in)
1981	48.5 mm (1.9 in)
1982	46.2 mm (1.8 in)
1983	52.3 mm (2.1 in)
1984	76.2 mm (3.0 in)
1985	78.5 mm (3.1 in)
1986	51.1 mm (2.0 in)
1987	66.5 mm (2.6 in)
1988	40.6 mm (1.6 in)
1989	49.8 mm (2.0 in)
1990	37.6 mm (1.5 in)
1991	47.8 mm (1.9 in)
1992	44.2 mm (1.7 in)
1993	58.2 mm (2.3 in)
1994	67.3 mm (2.6 in)
1995	51.3 mm (2.0 in)
1996	62.5 mm (2.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Greensboro Lock 7, 1888 to 1996. The record is 158.6 mm (6.2 in) in 1941, marked on the chart; the median year is 81.1 mm (3.2 in).

Wettest five days (Rx5day) at Greensboro Lock 7 by year
Year	Wettest five days (Rx5day)
1888	20.4 mm (0.8 in)
1889	78.8 mm (3.1 in)
1890	106.7 mm (4.2 in)
1891	82.6 mm (3.3 in)
1892	53.1 mm (2.1 in)
1893	66.1 mm (2.6 in)
1894	60.0 mm (2.4 in)
1895	90.3 mm (3.6 in)
1896	95.4 mm (3.8 in)
1897	66.0 mm (2.6 in)
1898	86.0 mm (3.4 in)
1899	130.1 mm (5.1 in)
1900	81.3 mm (3.2 in)
1901	101.9 mm (4.0 in)
1902	69.5 mm (2.7 in)
1903	75.4 mm (3.0 in)
1904	57.4 mm (2.3 in)
1905	109.7 mm (4.3 in)
1906	62.0 mm (2.4 in)
1907	123.4 mm (4.9 in)
1908	58.9 mm (2.3 in)
1909	66.5 mm (2.6 in)
1910	88.9 mm (3.5 in)
1911	78.2 mm (3.1 in)
1912	85.7 mm (3.4 in)
1913	82.3 mm (3.2 in)
1914	72.6 mm (2.9 in)
1915	68.1 mm (2.7 in)
1916	66.1 mm (2.6 in)
1917	73.6 mm (2.9 in)
1918	107.1 mm (4.2 in)
1919	81.3 mm (3.2 in)
1920	85.3 mm (3.4 in)
1921	100.3 mm (3.9 in)
1922	63.3 mm (2.5 in)
1923	96.8 mm (3.8 in)
1924	64.2 mm (2.5 in)
1925	65.7 mm (2.6 in)
1926	78.3 mm (3.1 in)
1927	80.3 mm (3.2 in)
1928	56.1 mm (2.2 in)
1929	112.8 mm (4.4 in)
1930	67.8 mm (2.7 in)
1931	65.8 mm (2.6 in)
1932	66.8 mm (2.6 in)
1933	86.6 mm (3.4 in)
1934	86.7 mm (3.4 in)
1935	85.1 mm (3.4 in)
1936	142.4 mm (5.6 in)
1937	88.7 mm (3.5 in)
1938	64.2 mm (2.5 in)
1939	75.4 mm (3.0 in)
1940	136.3 mm (5.4 in)
1941	158.6 mm (6.2 in)
1942	87.1 mm (3.4 in)
1943	117.2 mm (4.6 in)
1944	72.9 mm (2.9 in)
1945	83.8 mm (3.3 in)
1946	48.3 mm (1.9 in)
1947	86.5 mm (3.4 in)
1948	127.4 mm (5.0 in)
1949	65.3 mm (2.6 in)
1950	71.2 mm (2.8 in)
1951	128.8 mm (5.1 in)
1952	59.2 mm (2.3 in)
1953	83.8 mm (3.3 in)
1954	96.3 mm (3.8 in)
1955	81.1 mm (3.2 in)
1956	150.7 mm (5.9 in)
1957	46.5 mm (1.8 in)
1958	104.7 mm (4.1 in)
1959	59.3 mm (2.3 in)
1960	61.5 mm (2.4 in)
1961	70.4 mm (2.8 in)
1962	61.9 mm (2.4 in)
1963	78.4 mm (3.1 in)
1964	119.4 mm (4.7 in)
1965	63.0 mm (2.5 in)
1966	56.4 mm (2.2 in)
1967	108.5 mm (4.3 in)
1968	75.4 mm (3.0 in)
1969	90.4 mm (3.6 in)
1970	56.6 mm (2.2 in)
1971	87.7 mm (3.5 in)
1972	121.1 mm (4.8 in)
1973	83.8 mm (3.3 in)
1974	105.6 mm (4.2 in)
1975	77.5 mm (3.1 in)
1976	90.1 mm (3.5 in)
1977	62.1 mm (2.4 in)
1978	91.1 mm (3.6 in)
1979	81.6 mm (3.2 in)
1980	72.8 mm (2.9 in)
1981	114.2 mm (4.5 in)
1982	67.3 mm (2.6 in)
1983	105.4 mm (4.1 in)
1984	83.3 mm (3.3 in)
1985	122.9 mm (4.8 in)
1986	80.0 mm (3.1 in)
1987	85.0 mm (3.3 in)
1988	60.6 mm (2.4 in)
1989	66.3 mm (2.6 in)
1990	78.2 mm (3.1 in)
1991	74.2 mm (2.9 in)
1992	62.5 mm (2.5 in)
1993	68.2 mm (2.7 in)
1994	100.3 mm (3.9 in)
1995	99.8 mm (3.9 in)
1996	95.8 mm (3.8 in)

Longest dry spell (CDD)

The longest dry spell of the year at Greensboro Lock 7, 1888 to 1996. The record is 38 days in 1897, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Greensboro Lock 7 by year
Year	Longest dry spell (CDD)
1888	8 days
1889	12 days
1890	15 days
1891	16 days
1892	12 days
1893	13 days
1894	13 days
1895	14 days
1896	15 days
1897	38 days
1898	14 days
1899	14 days
1900	18 days
1901	19 days
1902	15 days
1903	17 days
1904	21 days
1905	15 days
1906	13 days
1907	9 days
1908	15 days
1909	16 days
1910	15 days
1911	27 days
1912	13 days
1913	15 days
1914	15 days
1915	13 days
1916	10 days
1917	23 days
1918	15 days
1919	13 days
1920	24 days
1921	13 days
1922	24 days
1923	23 days
1924	18 days
1925	15 days
1926	9 days
1927	14 days
1928	11 days
1929	13 days
1930	30 days
1931	11 days
1932	16 days
1933	13 days
1934	19 days
1935	12 days
1936	17 days
1937	11 days
1938	20 days
1939	14 days
1940	13 days
1941	20 days
1942	16 days
1943	26 days
1944	16 days
1945	13 days
1946	8 days
1947	18 days
1948	17 days
1949	11 days
1950	10 days
1951	16 days
1952	29 days
1953	25 days
1954	20 days
1955	23 days
1956	15 days
1957	14 days
1958	12 days
1959	19 days
1960	13 days
1961	11 days
1962	14 days
1963	29 days
1964	26 days
1965	14 days
1966	14 days
1967	26 days
1968	22 days
1969	12 days
1970	9 days
1971	12 days
1972	12 days
1973	14 days
1974	13 days
1975	11 days
1976	18 days
1977	17 days
1978	11 days
1979	11 days
1980	13 days
1981	15 days
1982	18 days
1983	13 days
1984	11 days
1985	12 days
1986	14 days
1987	16 days
1988	19 days
1989	11 days
1990	12 days
1991	25 days
1992	14 days
1993	13 days
1994	21 days
1995	16 days
1996	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

98 years, 1890 to 1994

A day with at least 49.0 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 97.0 mm (3.8 in) of rain is expected about once in 100 years.

Rainfall return levels at Greensboro Lock 7: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.0 mm (1.9 in)
5 years	61.7 mm (2.4 in)
10 years	70.1 mm (2.8 in)
25 years	80.9 mm (3.2 in)
50 years	89.0 mm (3.5 in)
100 years	97.0 mm (3.8 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 1890 to 1994.

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: 95.5 mm (3.8 in) in 1954; 93.0 mm (3.7 in) in 1943; 88.9 mm (3.5 in) in 1948.

Download the Data

Data for Greensboro Lock 7 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Greensboro Lock 7 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).

Year	Days with data	Share of year	Complete
1896	152	42%	No
1897	355	97%	Yes
1898	365	100%	Yes
1899	364	100%	Yes
1900	334	92%	Yes
1901	171	47%	No
1957	1	0%	No