Black River 1 SW Weather Records (USC00300706)

Record envelope, standing records and threshold days for Black River 1 SW (USC00300706), New York, United States, with 36 years of record.

Key Facts for Black River 1 SW

Black River 1 SW (USC00300706) is a weather station in New York, United States at 44.00 latitude and -75.82 longitude, 162 m (531 ft) above sea level.
The station reports from 1940 to 1975, 36 years of record.
122 records set at Black River 1 SW still stand.
Records are tracked for prcp: an element needs 30 years of data to be eligible.
Black River 1 SW set a daily record precipitation of 30.2 mm (1.2 in) on 3 April 1975.

About the Station

Location: New York, United States, 44.00 latitude, -75.82 longitude.
Elevation: 162 m (531 ft).
Period of record: 1940 to 1975, 36 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 Black River 1 SW. 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 Black River 1 SW, 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	33.3 C (91.9 F)	2.8 C (37.0 F)	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

122 standing records

122 records at Black River 1 SW still stand. 1942 holds the most, with 122.

Wettest Day of Each Month

Sep: 97.5 mm (3.8 in)

The wettest day on record for each calendar month at Black River 1 SW. The most was 97.5 mm (3.8 in) on 19 September 1945.

Record daily precipitation for each month at Black River 1 SW
Month	Record daily precipitation (mm)	Date
Jan	45.0 mm (1.8 in)	31 January 1966
Feb	68.6 mm (2.7 in)	17 February 1954
Mar	50.3 mm (2.0 in)	4 March 1947
Apr	40.6 mm (1.6 in)	19 April 1969
May	42.7 mm (1.7 in)	22 May 1947
Jun	86.9 mm (3.4 in)	27 June 1970
Jul	77.0 mm (3.0 in)	26 July 1962
Aug	74.2 mm (2.9 in)	31 August 1954
Sep	97.5 mm (3.8 in)	19 September 1945
Oct	46.0 mm (1.8 in)	19 October 1967
Nov	65.0 mm (2.6 in)	30 November 1963
Dec	47.0 mm (1.9 in)	31 December 1942

Period of Record Coverage

1942 to 1942

1 years of record at Black River 1 SW, 1942 to 1942. 1 years have data for under 90 percent of days and are left out of rankings: 1942.

Latest Records

Latest records at Black River 1 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 April 1975	Black River 1 SW, US	daily rain	30.2 mm (1.2 in)	8.6 mm (0.34 in)	8 years	17 of 100 (Routine)
25 March 1975	Black River 1 SW, US	daily rain	27.2 mm (1.1 in)	7.1 mm (0.28 in)	5 years	14 of 100 (Routine)
6 February 1975	Black River 1 SW, US	daily rain	6.6 mm (0.26 in)	0.2 mm (0.01 in)	9 years	5 of 100 (Routine)
16 January 1975	Black River 1 SW, US	daily rain	10.2 mm (0.4 in)	1.3 mm (0.05 in)	16 years	9 of 100 (Routine)
21 November 1974	Black River 1 SW, US	daily rain	31.2 mm (1.2 in)	16.5 mm (0.6 in)	32 years	32 of 100 (Routine)
13 November 1974	Black River 1 SW, US	daily rain	28.7 mm (1.1 in)	4.1 mm (0.16 in)	5 years	9 of 100 (Routine)
27 August 1974	Black River 1 SW, US	daily rain	10.2 mm (0.4 in)	2.8 mm (0.11 in)	28 years	13 of 100 (Routine)
5 August 1974	Black River 1 SW, US	daily rain	31.0 mm (1.2 in)	4.6 mm (0.18 in)	20 years	13 of 100 (Routine)
30 July 1974	Black River 1 SW, US	daily rain	28.4 mm (1.1 in)	10.9 mm (0.4 in)	32 years	21 of 100 (Routine)
23 April 1974	Black River 1 SW, US	daily rain	24.4 mm (1.0 in)	5.3 mm (0.21 in)	12 years	13 of 100 (Routine)
31 March 1974	Black River 1 SW, US	daily rain	29.2 mm (1.1 in)	9.9 mm (0.39 in)	23 years	24 of 100 (Routine)
22 February 1974	Black River 1 SW, US	daily rain	12.2 mm (0.5 in)	2.0 mm (0.08 in)	23 years	12 of 100 (Routine)
26 December 1973	Black River 1 SW, US	daily rain	22.6 mm (0.9 in)	9.4 mm (0.37 in)	8 years	18 of 100 (Routine)
22 December 1973	Black River 1 SW, US	daily rain	10.7 mm (0.4 in)	1.0 mm (0.04 in)	6 years	5 of 100 (Routine)
21 December 1973	Black River 1 SW, US	daily rain	40.6 mm (1.6 in)	13.9 mm (0.5 in)	16 years	27 of 100 (Routine)
16 November 1973	Black River 1 SW, US	daily rain	18.5 mm (0.7 in)	6.8 mm (0.27 in)	4 years	12 of 100 (Routine)
2 November 1973	Black River 1 SW, US	daily rain	16.3 mm (0.6 in)	4.1 mm (0.16 in)	32 years	17 of 100 (Routine)
5 October 1973	Black River 1 SW, US	daily rain	26.7 mm (1.1 in)	8.9 mm (0.35 in)	24 years	20 of 100 (Routine)
29 July 1973	Black River 1 SW, US	daily rain	38.1 mm (1.5 in)	0.8 mm (0.03 in)	15 years	7 of 100 (Routine)
5 April 1973	Black River 1 SW, US	daily rain	21.3 mm (0.8 in)	9.4 mm (0.37 in)	23 years	20 of 100 (Routine)

Extremes by Year

1940 to 1975

Yearly extremes at Black River 1 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	33.3 C (91.9 F)	1942	33.3 C (91.9 F)	1
Coldest night (TNn)	2.8 C (37.0 F)	1942	2.8 C (37.0 F)	1
Wettest day (Rx1day)	97.5 mm (3.8 in)	1945	45.2 mm (1.8 in)	36
Wettest five days (Rx5day)	134.3 mm (5.3 in)	1945	74.5 mm (2.9 in)	36
Longest dry spell (CDD)	26 days	1947	15 days	36

Hottest day (TXx)

The hottest day of the year at Black River 1 SW, 1940 to 1975. The record is 33.3 C (91.9 F) in 1942, marked on the chart; the median year is 33.3 C (91.9 F).

Hottest day (TXx) at Black River 1 SW by year
Year	Hottest day (TXx)
1940	n/a
1941	n/a
1942	33.3 C (91.9 F)
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

Coldest night (TNn)

The coldest night of the year at Black River 1 SW, 1940 to 1975. The record is 2.8 C (37.0 F) in 1942, marked on the chart; the median year is 2.8 C (37.0 F).

Coldest night (TNn) at Black River 1 SW by year
Year	Coldest night (TNn)
1940	n/a
1941	n/a
1942	2.8 C (37.0 F)
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

Wettest day (Rx1day)

The wettest day of the year at Black River 1 SW, 1940 to 1975. The record is 97.5 mm (3.8 in) in 1945, marked on the chart; the median year is 45.2 mm (1.8 in).

Wettest day (Rx1day) at Black River 1 SW by year
Year	Wettest day (Rx1day)
1940	44.5 mm (1.8 in)
1941	50.8 mm (2.0 in)
1942	47.0 mm (1.9 in)
1943	45.2 mm (1.8 in)
1944	32.8 mm (1.3 in)
1945	97.5 mm (3.8 in)
1946	49.5 mm (1.9 in)
1947	50.8 mm (2.0 in)
1948	39.4 mm (1.6 in)
1949	53.1 mm (2.1 in)
1950	48.5 mm (1.9 in)
1951	36.1 mm (1.4 in)
1952	43.4 mm (1.7 in)
1953	41.4 mm (1.6 in)
1954	74.2 mm (2.9 in)
1955	45.2 mm (1.8 in)
1956	34.8 mm (1.4 in)
1957	40.9 mm (1.6 in)
1958	40.6 mm (1.6 in)
1959	52.3 mm (2.1 in)
1960	33.5 mm (1.3 in)
1961	44.2 mm (1.7 in)
1962	77.0 mm (3.0 in)
1963	65.0 mm (2.6 in)
1964	57.4 mm (2.3 in)
1965	35.6 mm (1.4 in)
1966	47.0 mm (1.9 in)
1967	57.2 mm (2.3 in)
1968	64.0 mm (2.5 in)
1969	40.6 mm (1.6 in)
1970	86.9 mm (3.4 in)
1971	35.6 mm (1.4 in)
1972	52.3 mm (2.1 in)
1973	40.6 mm (1.6 in)
1974	31.2 mm (1.2 in)
1975	30.2 mm (1.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Black River 1 SW, 1940 to 1975. The record is 134.3 mm (5.3 in) in 1945, marked on the chart; the median year is 74.5 mm (2.9 in).

Wettest five days (Rx5day) at Black River 1 SW by year
Year	Wettest five days (Rx5day)
1940	76.7 mm (3.0 in)
1941	83.1 mm (3.3 in)
1942	96.0 mm (3.8 in)
1943	97.3 mm (3.8 in)
1944	59.7 mm (2.4 in)
1945	134.3 mm (5.3 in)
1946	70.5 mm (2.8 in)
1947	90.6 mm (3.6 in)
1948	66.3 mm (2.6 in)
1949	73.9 mm (2.9 in)
1950	75.2 mm (3.0 in)
1951	65.5 mm (2.6 in)
1952	57.4 mm (2.3 in)
1953	66.3 mm (2.6 in)
1954	105.2 mm (4.1 in)
1955	96.1 mm (3.8 in)
1956	72.1 mm (2.8 in)
1957	66.6 mm (2.6 in)
1958	72.3 mm (2.8 in)
1959	75.1 mm (3.0 in)
1960	73.8 mm (2.9 in)
1961	64.5 mm (2.5 in)
1962	102.7 mm (4.0 in)
1963	87.8 mm (3.5 in)
1964	85.3 mm (3.4 in)
1965	61.2 mm (2.4 in)
1966	61.5 mm (2.4 in)
1967	75.4 mm (3.0 in)
1968	77.5 mm (3.1 in)
1969	55.1 mm (2.2 in)
1970	117.4 mm (4.6 in)
1971	60.8 mm (2.4 in)
1972	82.3 mm (3.2 in)
1973	95.1 mm (3.7 in)
1974	49.5 mm (1.9 in)
1975	54.8 mm (2.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Black River 1 SW, 1940 to 1975. The record is 26 days in 1947, marked on the chart; the median year is 15 days.

Longest dry spell (CDD) at Black River 1 SW by year
Year	Longest dry spell (CDD)
1940	13 days
1941	25 days
1942	10 days
1943	16 days
1944	14 days
1945	13 days
1946	10 days
1947	26 days
1948	17 days
1949	14 days
1950	14 days
1951	15 days
1952	17 days
1953	16 days
1954	14 days
1955	15 days
1956	15 days
1957	23 days
1958	15 days
1959	16 days
1960	13 days
1961	14 days
1962	16 days
1963	21 days
1964	15 days
1965	15 days
1966	12 days
1967	18 days
1968	17 days
1969	18 days
1970	16 days
1971	12 days
1972	13 days
1973	12 days
1974	12 days
1975	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

34 years, 1940 to 1974

A day with at least 46.0 mm (1.8 in) of rain is expected about once in 2 years. A day with at least 111.7 mm (4.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Black River 1 SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	46.0 mm (1.8 in)
5 years	58.8 mm (2.3 in)
10 years	68.8 mm (2.7 in)
25 years	83.8 mm (3.3 in)
50 years	96.9 mm (3.8 in)	Longer than the 34 years of record
100 years	111.7 mm (4.4 in)	Longer than the 34 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, 34 years of values from 1940 to 1974.

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: 97.5 mm (3.8 in) in 1945; 86.9 mm (3.4 in) in 1970; 77.0 mm (3.0 in) in 1962.

Download the Data

Data for Black River 1 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Black River 1 SW 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).