Brewerton Lock 23 Weather Records (USC00300870)

Record envelope, standing records and threshold days for Brewerton Lock 23 (USC00300870), New York, United States, with 95 years of record.

Key Facts for Brewerton Lock 23

Brewerton Lock 23 (USC00300870) is a weather station in New York, United States at 43.24 latitude and -76.20 longitude, 115 m (377 ft) above sea level.
The station reports from 1932 to 2026, 95 years of record.
1,464 records set at Brewerton Lock 23 still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Brewerton Lock 23 set a daily record precipitation of 24.6 mm (1.0 in) on 25 May 2026.

About the Station

Location: New York, United States, 43.24 latitude, -76.20 longitude.
Elevation: 115 m (377 ft).
Period of record: 1932 to 2026, 95 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

35 days at or beyond a record

The band shows the record high and record low for each calendar day at Brewerton Lock 23. The lines show the 2026 daily maximum and minimum. 35 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Brewerton Lock 23, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	17.2 C (63.0 F)	-29.4 C (-20.9 F)	10.6 C (51.1 F)	-26.7 C (-16.1 F)
Feb	21.7 C (71.1 F)	-30.6 C (-23.1 F)	6.7 C (44.1 F)	-28.9 C (-20.0 F)
Mar	26.1 C (79.0 F)	-27.2 C (-17.0 F)	20.0 C (68.0 F)	-18.3 C (-0.9 F)
Apr	32.2 C (90.0 F)	-13.3 C (8.1 F)	26.7 C (80.1 F)	-8.9 C (16.0 F)
May	33.9 C (93.0 F)	-3.3 C (26.1 F)	32.8 C (91.0 F)	-1.7 C (28.9 F)
Jun	35.0 C (95.0 F)	1.7 C (35.1 F)	32.2 C (90.0 F)	5.0 C (41.0 F)
Jul	35.6 C (96.1 F)	7.2 C (45.0 F)	35.6 C (96.1 F)	8.3 C (46.9 F)
Aug	34.4 C (93.9 F)	6.1 C (43.0 F)	32.2 C (90.0 F)	7.2 C (45.0 F)
Sep	33.9 C (93.0 F)	-1.7 C (28.9 F)	28.3 C (82.9 F)	2.2 C (36.0 F)
Oct	30.0 C (86.0 F)	-5.6 C (21.9 F)	23.3 C (73.9 F)	0.6 C (33.1 F)
Nov	25.6 C (78.1 F)	-20.6 C (-5.1 F)	n/a	n/a
Dec	20.0 C (68.0 F)	-22.2 C (-8.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Brewerton Lock 23 still stand. 2015 holds the most, with 111.

Standing records at Brewerton Lock 23 by the year they were set
Year set	Standing records
2008	52
2009	89
2010	92
2011	64
2012	89
2013	61
2014	78
2015	111
2016	73
2017	84
2018	96
2019	60
2020	67
2021	87
2022	72
2023	79
2024	82
2025	73
2026	55

Wettest Day of Each Month

Jul: 173.2 mm (6.8 in)

The wettest day on record for each calendar month at Brewerton Lock 23. The most was 173.2 mm (6.8 in) on 8 July 1935.

Record daily precipitation for each month at Brewerton Lock 23
Month	Record daily precipitation (mm)	Date
Jan	69.3 mm (2.7 in)	5 January 1994
Feb	127.0 mm (5.0 in)	24 February 2003
Mar	53.6 mm (2.1 in)	3 March 1947
Apr	49.8 mm (2.0 in)	3 April 2005
May	78.2 mm (3.1 in)	27 May 1991
Jun	83.6 mm (3.3 in)	12 June 2009
Jul	173.2 mm (6.8 in)	8 July 1935
Aug	132.8 mm (5.2 in)	31 August 1954
Sep	108.5 mm (4.3 in)	26 September 1975
Oct	85.3 mm (3.4 in)	30 October 2017
Nov	60.2 mm (2.4 in)	1 November 2019
Dec	50.3 mm (2.0 in)	17 December 1970

Period of Record Coverage

2008 to 2026

19 years of record at Brewerton Lock 23, 2008 to 2026. 11 years have data for under 90 percent of days and are left out of rankings: 2008, 2012, 2013, 2014, 2015, 2016, 2017, 2018 and others.

Days with data per year at Brewerton Lock 23
Year	Days with data	Share of year	Complete
2008	147	40%	No
2009	356	98%	Yes
2010	349	96%	Yes
2011	342	94%	Yes
2012	296	81%	No
2013	223	61%	No
2014	294	81%	No
2015	301	82%	No
2016	302	83%	No
2017	296	81%	No
2018	298	82%	No
2019	308	84%	No
2020	286	78%	No
2021	352	96%	Yes
2022	344	94%	Yes
2023	346	95%	Yes
2024	362	99%	Yes
2025	350	96%	Yes
2026	274	75%	No

Latest Records

Latest records at Brewerton Lock 23
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 May 2026	Brewerton Lock 23, US	daily rain	24.6 mm (1.0 in)	0.2 mm (0.01 in)	23 years	15 of 100 (Routine)
30 April 2026	Brewerton Lock 23, US	daily rain	20.3 mm (0.8 in)	0.7 mm (0.03 in)	64 years	20 of 100 (Routine)
1 April 2026	Brewerton Lock 23, US	daily rain	37.1 mm (1.5 in)	6.1 mm (0.24 in)	49 years	31 of 100 (Routine)
18 March 2026	Brewerton Lock 23, US	daily snowfall	17.8 cm (7.0 in)	3.8 cm (1.5 in)	44 years	26 of 100 (Routine)
27 January 2026	Brewerton Lock 23, US	daily rain	35.6 mm (1.4 in)	12.0 mm (0.5 in)	74 years	50 of 100 (Notable)
3 January 2026	Brewerton Lock 23, US	daily snowfall	38.1 cm (15.0 in)	1.3 cm (0.5 in)	56 years	26 of 100 (Routine)
1 December 2025	Brewerton Lock 23, US	daily rain	38.1 mm (1.5 in)	14.2 mm (0.6 in)	19 years	35 of 100 (Notable)
31 October 2025	Brewerton Lock 23, US	daily rain	33.3 mm (1.3 in)	8.9 mm (0.35 in)	70 years	39 of 100 (Notable)
14 July 2025	Brewerton Lock 23, US	daily rain	56.4 mm (2.2 in)	25.2 mm (1.0 in)	52 years	45 of 100 (Notable)
7 May 2025	Brewerton Lock 23, US	daily rain	62.5 mm (2.5 in)	40.7 mm (1.6 in)	80 years	73 of 100 (Major)
6 March 2025	Brewerton Lock 23, US	daily rain (Tie)	19.6 mm (0.8 in)	tie	28 years	4 of 100 (Routine)
22 February 2025	Brewerton Lock 23, US	daily snow depth	81.3 cm (32.0 in)	20.3 cm (8.0 in)	47 years	33 of 100 (Routine)
21 February 2025	Brewerton Lock 23, US	monthly snow depth	96.5 cm (38.0 in)	5.1 cm (2.0 in)	21 years	26 of 100 (Routine)
20 February 2025	Brewerton Lock 23, US	daily snow depth	86.4 cm (34.0 in)	20.4 cm (8.0 in)	21 years	25 of 100 (Routine)
19 February 2025	Brewerton Lock 23, US	daily snow depth	83.8 cm (33.0 in)	7.6 cm (3.0 in)	10 years	15 of 100 (Routine)
18 February 2025	Brewerton Lock 23, US	daily snow depth (Tie)	78.7 cm (31.0 in)	tie	54 years	6 of 100 (Routine)
17 February 2025	Brewerton Lock 23, US	daily snow depth	78.7 cm (31.0 in)	7.6 cm (3.0 in)	31 years	21 of 100 (Routine)
15 February 2025	Brewerton Lock 23, US	daily snow depth	76.2 cm (30.0 in)	7.6 cm (3.0 in)	31 years	21 of 100 (Routine)
14 February 2025	Brewerton Lock 23, US	daily snowfall	48.3 cm (19.0 in)	22.9 cm (9.0 in)	22 years	51 of 100 (Notable)
14 February 2025	Brewerton Lock 23, US	daily snow depth	86.4 cm (34.0 in)	15.3 cm (6.0 in)	47 years	30 of 100 (Routine)

Extremes by Year

1932 to 2026

Yearly extremes at Brewerton Lock 23: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	35.6 C (96.1 F)	2011	33.9 C (93.0 F)	19
Coldest night (TNn)	-30.6 C (-23.1 F)	2015	-24.4 C (-11.9 F)	19
Wettest day (Rx1day)	173.2 mm (6.8 in)	1935	50.8 mm (2.0 in)	95
Wettest five days (Rx5day)	236.2 mm (9.3 in)	2003	80.0 mm (3.1 in)	95
Longest dry spell (CDD)	26 days	1983	14 days	95

Hottest day (TXx)

The hottest day of the year at Brewerton Lock 23, 1932 to 2026. The record is 35.6 C (96.1 F) in 2011, marked on the chart; the median year is 33.9 C (93.0 F).

Hottest day (TXx) at Brewerton Lock 23 by year
Year	Hottest day (TXx)
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
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	32.2 C (90.0 F)
2009	32.8 C (91.0 F)
2010	34.4 C (93.9 F)
2011	35.6 C (96.1 F)
2012	34.4 C (93.9 F)
2013	30.6 C (87.1 F)
2014	32.8 C (91.0 F)
2015	33.3 C (91.9 F)
2016	33.9 C (93.0 F)
2017	32.2 C (90.0 F)
2018	35.6 C (96.1 F)
2019	33.3 C (91.9 F)
2020	34.4 C (93.9 F)
2021	33.3 C (91.9 F)
2022	33.9 C (93.0 F)
2023	32.8 C (91.0 F)
2024	33.9 C (93.0 F)
2025	35.0 C (95.0 F)
2026	35.6 C (96.1 F)

Coldest night (TNn)

The coldest night of the year at Brewerton Lock 23, 1932 to 2026. The record is -30.6 C (-23.1 F) in 2015, marked on the chart; the median year is -24.4 C (-11.9 F).

Coldest night (TNn) at Brewerton Lock 23 by year
Year	Coldest night (TNn)
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
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	-18.9 C (-2.0 F)
2009	-22.8 C (-9.0 F)
2010	-26.1 C (-15.0 F)
2011	-27.2 C (-17.0 F)
2012	-24.4 C (-11.9 F)
2013	-26.1 C (-15.0 F)
2014	-29.4 C (-20.9 F)
2015	-30.6 C (-23.1 F)
2016	-22.2 C (-8.0 F)
2017	-21.7 C (-7.1 F)
2018	-28.3 C (-18.9 F)
2019	-24.4 C (-11.9 F)
2020	-19.4 C (-2.9 F)
2021	-23.3 C (-9.9 F)
2022	-28.3 C (-18.9 F)
2023	-22.8 C (-9.0 F)
2024	-20.6 C (-5.1 F)
2025	-22.2 C (-8.0 F)
2026	-28.9 C (-20.0 F)

Wettest day (Rx1day)

The wettest day of the year at Brewerton Lock 23, 1932 to 2026. The record is 173.2 mm (6.8 in) in 1935, marked on the chart; the median year is 50.8 mm (2.0 in).

Wettest day (Rx1day) at Brewerton Lock 23 by year
Year	Wettest day (Rx1day)
1932	50.8 mm (2.0 in)
1933	34.5 mm (1.4 in)
1934	50.8 mm (2.0 in)
1935	173.2 mm (6.8 in)
1936	37.8 mm (1.5 in)
1937	103.4 mm (4.1 in)
1938	52.1 mm (2.1 in)
1939	41.4 mm (1.6 in)
1940	45.7 mm (1.8 in)
1941	37.6 mm (1.5 in)
1942	46.5 mm (1.8 in)
1943	43.9 mm (1.7 in)
1944	68.1 mm (2.7 in)
1945	71.1 mm (2.8 in)
1946	47.5 mm (1.9 in)
1947	53.6 mm (2.1 in)
1948	44.2 mm (1.7 in)
1949	63.5 mm (2.5 in)
1950	47.0 mm (1.9 in)
1951	47.5 mm (1.9 in)
1952	88.9 mm (3.5 in)
1953	55.9 mm (2.2 in)
1954	132.8 mm (5.2 in)
1955	50.5 mm (2.0 in)
1956	42.9 mm (1.7 in)
1957	45.7 mm (1.8 in)
1958	49.8 mm (2.0 in)
1959	43.7 mm (1.7 in)
1960	41.4 mm (1.6 in)
1961	54.1 mm (2.1 in)
1962	27.2 mm (1.1 in)
1963	45.5 mm (1.8 in)
1964	34.3 mm (1.4 in)
1965	25.7 mm (1.0 in)
1966	31.8 mm (1.3 in)
1967	52.3 mm (2.1 in)
1968	55.1 mm (2.2 in)
1969	48.3 mm (1.9 in)
1970	50.3 mm (2.0 in)
1971	48.5 mm (1.9 in)
1972	45.7 mm (1.8 in)
1973	38.6 mm (1.5 in)
1974	58.4 mm (2.3 in)
1975	108.5 mm (4.3 in)
1976	50.8 mm (2.0 in)
1977	42.9 mm (1.7 in)
1978	60.5 mm (2.4 in)
1979	57.2 mm (2.3 in)
1980	58.2 mm (2.3 in)
1981	82.6 mm (3.3 in)
1982	33.5 mm (1.3 in)
1983	33.5 mm (1.3 in)
1984	40.6 mm (1.6 in)
1985	36.8 mm (1.4 in)
1986	48.3 mm (1.9 in)
1987	52.6 mm (2.1 in)
1988	39.9 mm (1.6 in)
1989	64.8 mm (2.6 in)
1990	52.8 mm (2.1 in)
1991	78.2 mm (3.1 in)
1992	47.0 mm (1.9 in)
1993	38.1 mm (1.5 in)
1994	69.3 mm (2.7 in)
1995	50.0 mm (2.0 in)
1996	55.1 mm (2.2 in)
1997	34.8 mm (1.4 in)
1998	81.3 mm (3.2 in)
1999	61.7 mm (2.4 in)
2000	38.4 mm (1.5 in)
2001	61.5 mm (2.4 in)
2002	55.9 mm (2.2 in)
2003	127.0 mm (5.0 in)
2004	54.6 mm (2.1 in)
2005	72.9 mm (2.9 in)
2006	51.6 mm (2.0 in)
2007	40.6 mm (1.6 in)
2008	42.2 mm (1.7 in)
2009	83.6 mm (3.3 in)
2010	76.2 mm (3.0 in)
2011	36.1 mm (1.4 in)
2012	48.5 mm (1.9 in)
2013	68.8 mm (2.7 in)
2014	54.6 mm (2.1 in)
2015	66.0 mm (2.6 in)
2016	77.5 mm (3.1 in)
2017	85.3 mm (3.4 in)
2018	47.2 mm (1.9 in)
2019	60.2 mm (2.4 in)
2020	47.0 mm (1.9 in)
2021	83.1 mm (3.3 in)
2022	43.2 mm (1.7 in)
2023	121.9 mm (4.8 in)
2024	58.2 mm (2.3 in)
2025	62.5 mm (2.5 in)
2026	37.1 mm (1.5 in)

Wettest five days (Rx5day)

The wettest five days of the year at Brewerton Lock 23, 1932 to 2026. The record is 236.2 mm (9.3 in) in 2003, marked on the chart; the median year is 80.0 mm (3.1 in).

Wettest five days (Rx5day) at Brewerton Lock 23 by year
Year	Wettest five days (Rx5day)
1932	72.7 mm (2.9 in)
1933	51.5 mm (2.0 in)
1934	68.8 mm (2.7 in)
1935	191.7 mm (7.5 in)
1936	57.0 mm (2.2 in)
1937	146.9 mm (5.8 in)
1938	95.1 mm (3.7 in)
1939	69.1 mm (2.7 in)
1940	56.4 mm (2.2 in)
1941	63.5 mm (2.5 in)
1942	126.5 mm (5.0 in)
1943	127.8 mm (5.0 in)
1944	71.6 mm (2.8 in)
1945	95.4 mm (3.8 in)
1946	58.6 mm (2.3 in)
1947	114.3 mm (4.5 in)
1948	65.5 mm (2.6 in)
1949	70.9 mm (2.8 in)
1950	86.9 mm (3.4 in)
1951	71.1 mm (2.8 in)
1952	99.9 mm (3.9 in)
1953	77.7 mm (3.1 in)
1954	166.6 mm (6.6 in)
1955	114.0 mm (4.5 in)
1956	88.4 mm (3.5 in)
1957	53.8 mm (2.1 in)
1958	60.0 mm (2.4 in)
1959	92.2 mm (3.6 in)
1960	54.9 mm (2.2 in)
1961	64.2 mm (2.5 in)
1962	62.6 mm (2.5 in)
1963	73.2 mm (2.9 in)
1964	47.8 mm (1.9 in)
1965	48.8 mm (1.9 in)
1966	62.2 mm (2.4 in)
1967	61.7 mm (2.4 in)
1968	87.5 mm (3.4 in)
1969	68.4 mm (2.7 in)
1970	89.4 mm (3.5 in)
1971	63.3 mm (2.5 in)
1972	105.7 mm (4.2 in)
1973	59.5 mm (2.3 in)
1974	86.8 mm (3.4 in)
1975	132.4 mm (5.2 in)
1976	99.5 mm (3.9 in)
1977	74.1 mm (2.9 in)
1978	73.5 mm (2.9 in)
1979	109.0 mm (4.3 in)
1980	125.2 mm (4.9 in)
1981	113.6 mm (4.5 in)
1982	60.9 mm (2.4 in)
1983	77.0 mm (3.0 in)
1984	69.6 mm (2.7 in)
1985	52.2 mm (2.1 in)
1986	85.1 mm (3.4 in)
1987	90.7 mm (3.6 in)
1988	78.8 mm (3.1 in)
1989	68.6 mm (2.7 in)
1990	80.0 mm (3.1 in)
1991	90.2 mm (3.6 in)
1992	76.7 mm (3.0 in)
1993	71.6 mm (2.8 in)
1994	87.1 mm (3.4 in)
1995	76.0 mm (3.0 in)
1996	105.9 mm (4.2 in)
1997	61.7 mm (2.4 in)
1998	93.5 mm (3.7 in)
1999	87.7 mm (3.5 in)
2000	71.1 mm (2.8 in)
2001	70.3 mm (2.8 in)
2002	81.0 mm (3.2 in)
2003	236.2 mm (9.3 in)
2004	97.2 mm (3.8 in)
2005	95.0 mm (3.7 in)
2006	92.3 mm (3.6 in)
2007	68.1 mm (2.7 in)
2008	79.3 mm (3.1 in)
2009	89.2 mm (3.5 in)
2010	109.7 mm (4.3 in)
2011	89.3 mm (3.5 in)
2012	80.0 mm (3.1 in)
2013	88.7 mm (3.5 in)
2014	76.4 mm (3.0 in)
2015	89.7 mm (3.5 in)
2016	129.6 mm (5.1 in)
2017	122.2 mm (4.8 in)
2018	113.6 mm (4.5 in)
2019	68.5 mm (2.7 in)
2020	57.7 mm (2.3 in)
2021	136.2 mm (5.4 in)
2022	69.4 mm (2.7 in)
2023	170.8 mm (6.7 in)
2024	99.8 mm (3.9 in)
2025	97.8 mm (3.9 in)
2026	57.0 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Brewerton Lock 23, 1932 to 2026. The record is 26 days in 1983, marked on the chart; the median year is 14 days.

Longest dry spell (CDD) at Brewerton Lock 23 by year
Year	Longest dry spell (CDD)
1932	15 days
1933	15 days
1934	14 days
1935	17 days
1936	13 days
1937	14 days
1938	21 days
1939	18 days
1940	10 days
1941	16 days
1942	10 days
1943	13 days
1944	18 days
1945	11 days
1946	10 days
1947	18 days
1948	22 days
1949	25 days
1950	14 days
1951	15 days
1952	17 days
1953	17 days
1954	25 days
1955	14 days
1956	14 days
1957	23 days
1958	16 days
1959	16 days
1960	15 days
1961	17 days
1962	12 days
1963	19 days
1964	15 days
1965	22 days
1966	17 days
1967	18 days
1968	12 days
1969	11 days
1970	16 days
1971	12 days
1972	10 days
1973	14 days
1974	12 days
1975	15 days
1976	11 days
1977	14 days
1978	16 days
1979	12 days
1980	13 days
1981	14 days
1982	14 days
1983	26 days
1984	13 days
1985	12 days
1986	12 days
1987	21 days
1988	20 days
1989	14 days
1990	9 days
1991	13 days
1992	11 days
1993	11 days
1994	11 days
1995	18 days
1996	13 days
1997	19 days
1998	17 days
1999	25 days
2000	17 days
2001	15 days
2002	11 days
2003	13 days
2004	10 days
2005	15 days
2006	10 days
2007	12 days
2008	13 days
2009	16 days
2010	13 days
2011	12 days
2012	11 days
2013	9 days
2014	16 days
2015	15 days
2016	12 days
2017	14 days
2018	8 days
2019	7 days
2020	15 days
2021	14 days
2022	14 days
2023	17 days
2024	13 days
2025	15 days
2026	12 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

75 years, 1932 to 2025

A day with at least 48.9 mm (1.9 in) of rain is expected about once in 2 years. A day with at least 161.6 mm (6.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Brewerton Lock 23: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	48.9 mm (1.9 in)
5 years	66.8 mm (2.6 in)
10 years	82.5 mm (3.2 in)
25 years	108.0 mm (4.3 in)
50 years	132.1 mm (5.2 in)
100 years	161.6 mm (6.4 in)	Longer than the 75 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, 75 years of values from 1932 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: 173.2 mm (6.8 in) in 1935; 132.8 mm (5.2 in) in 1954; 127.0 mm (5.0 in) in 2003.

Download the Data

Data for Brewerton Lock 23 standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Brewerton Lock 23 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).