Dumont 2 ENE Weather Records (USC00392409)

Record envelope, standing records and threshold days for Dumont 2 ENE (USC00392409), South Dakota, United States, with 61 years of record.

Key Facts for Dumont 2 ENE

Dumont 2 ENE (USC00392409) is a weather station in South Dakota, United States at 44.25 latitude and -103.77 longitude, 1,873 m (6,145 ft) above sea level.
The station reports from 1909 to 1969, 61 years of record.
118 records set at Dumont 2 ENE still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Dumont 2 ENE set a daily record snowfall of 10.2 cm (4.0 in) on 13 June 1969.

About the Station

Location: South Dakota, United States, 44.25 latitude, -103.77 longitude.
Elevation: 1,873 m (6,145 ft).
Period of record: 1909 to 1969, 61 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 Dumont 2 ENE. 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 Dumont 2 ENE, 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	18.3 C (64.9 F)	-21.1 C (-6.0 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

118 standing records

118 records at Dumont 2 ENE still stand. 1944 holds the most, with 118.

All-Time Record Progression

3 new records

3 all-time records were set at Dumont 2 ENE between 27 January 1944 and 22 May 1952. Each dot is a new record.

When Dumont 2 ENE set new all-time records
Date	Kind	Detail
1944-01-27	Record daily snowfall	Record daily snowfall 91.4 cm (36.0 in)
1950-03-27	Record daily snowfall	Record daily snowfall 96.5 cm (38.0 in)
1952-05-22	Record daily precipitation	Record daily precipitation 106.7 mm (4.2 in)

Wettest Day of Each Month

May: 106.7 mm (4.2 in)

The wettest day on record for each calendar month at Dumont 2 ENE. The most was 106.7 mm (4.2 in) on 22 May 1952.

Record daily precipitation for each month at Dumont 2 ENE
Month	Record daily precipitation (mm)	Date
Jan	61.0 mm (2.4 in)	27 January 1944
Feb	29.7 mm (1.2 in)	26 February 1911
Mar	49.5 mm (1.9 in)	27 March 1950
Apr	66.8 mm (2.6 in)	14 April 1910
May	106.7 mm (4.2 in)	22 May 1952
Jun	73.7 mm (2.9 in)	9 June 1964
Jul	81.0 mm (3.2 in)	11 July 1937
Aug	64.8 mm (2.6 in)	21 August 1964
Sep	59.7 mm (2.4 in)	13 September 1928
Oct	37.1 mm (1.5 in)	8 October 1924
Nov	37.8 mm (1.5 in)	8 November 1944
Dec	36.1 mm (1.4 in)	21 December 1911

Period of Record Coverage

1944 to 1944

1 years of record at Dumont 2 ENE, 1944 to 1944. 1 years have data for under 90 percent of days and are left out of rankings: 1944.

Latest Records

Latest records at Dumont 2 ENE
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 June 1969	Dumont 2 ENE, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	58 years	43 of 100 (Notable)
13 June 1969	Dumont 2 ENE, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	32 years	20 of 100 (Routine)
4 May 1969	Dumont 2 ENE, US	daily rain	20.3 mm (0.8 in)	12.7 mm (0.5 in)	10 years	20 of 100 (Routine)
27 April 1969	Dumont 2 ENE, US	daily snowfall	25.4 cm (10.0 in)	12.7 cm (5.0 in)	52 years	35 of 100 (Notable)
27 April 1969	Dumont 2 ENE, US	daily rain	26.9 mm (1.1 in)	4.8 mm (0.19 in)	6 years	12 of 100 (Routine)
26 April 1969	Dumont 2 ENE, US	daily snowfall	17.8 cm (7.0 in)	3.3 cm (1.3 in)	55 years	25 of 100 (Routine)
25 April 1969	Dumont 2 ENE, US	daily snowfall (Tie)	7.6 cm (3.0 in)	tie	44 years	4 of 100 (Routine)
8 April 1969	Dumont 2 ENE, US	daily rain	40.6 mm (1.6 in)	27.9 mm (1.1 in)	7 years	41 of 100 (Notable)
1 December 1968	Dumont 2 ENE, US	daily rain	4.6 mm (0.18 in)	0.8 mm (0.03 in)	26 years	15 of 100 (Routine)
1 December 1968	Dumont 2 ENE, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	26 years	3 of 100 (Routine)
17 November 1968	Dumont 2 ENE, US	daily rain	9.4 mm (0.37 in)	1.5 mm (0.06 in)	57 years	20 of 100 (Routine)
10 August 1968	Dumont 2 ENE, US	daily rain	16.5 mm (0.6 in)	1.3 mm (0.05 in)	18 years	12 of 100 (Routine)
24 July 1968	Dumont 2 ENE, US	daily rain	25.4 mm (1.0 in)	9.9 mm (0.39 in)	45 years	29 of 100 (Routine)
8 May 1968	Dumont 2 ENE, US	daily rain	9.9 mm (0.39 in)	0.2 mm (0.01 in)	41 years	18 of 100 (Routine)
22 April 1968	Dumont 2 ENE, US	daily rain	16.5 mm (0.6 in)	1.3 mm (0.05 in)	28 years	15 of 100 (Routine)
8 April 1968	Dumont 2 ENE, US	daily snowfall	15.2 cm (6.0 in)	5.0 cm (2.0 in)	49 years	25 of 100 (Routine)
8 April 1968	Dumont 2 ENE, US	daily rain (Tie)	12.7 mm (0.5 in)	tie	6 years	1 of 100 (Routine)
20 February 1968	Dumont 2 ENE, US	daily rain	6.4 mm (0.25 in)	1.1 mm (0.04 in)	48 years	20 of 100 (Routine)
24 December 1967	Dumont 2 ENE, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	56 years	5 of 100 (Routine)
28 October 1967	Dumont 2 ENE, US	daily rain	8.9 mm (0.35 in)	3.6 mm (0.14 in)	5 years	12 of 100 (Routine)

Extremes by Year

1909 to 1969

Yearly extremes at Dumont 2 ENE: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	18.3 C (64.9 F)	1944	18.3 C (64.9 F)	1
Coldest night (TNn)	-21.1 C (-6.0 F)	1944	-21.1 C (-6.0 F)	1
Wettest day (Rx1day)	106.7 mm (4.2 in)	1952	40.6 mm (1.6 in)	61
Wettest five days (Rx5day)	211.3 mm (8.3 in)	1909	63.3 mm (2.5 in)	61
Longest dry spell (CDD)	43 days	1959	25 days	61

Hottest day (TXx)

The hottest day of the year at Dumont 2 ENE, 1909 to 1969. The record is 18.3 C (64.9 F) in 1944, marked on the chart; the median year is 18.3 C (64.9 F).

Hottest day (TXx) at Dumont 2 ENE by year
Year	Hottest day (TXx)
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	18.3 C (64.9 F)
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

Coldest night (TNn)

The coldest night of the year at Dumont 2 ENE, 1909 to 1969. The record is -21.1 C (-6.0 F) in 1944, marked on the chart; the median year is -21.1 C (-6.0 F).

Coldest night (TNn) at Dumont 2 ENE by year
Year	Coldest night (TNn)
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	-21.1 C (-6.0 F)
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

Wettest day (Rx1day)

The wettest day of the year at Dumont 2 ENE, 1909 to 1969. The record is 106.7 mm (4.2 in) in 1952, marked on the chart; the median year is 40.6 mm (1.6 in).

Wettest day (Rx1day) at Dumont 2 ENE by year
Year	Wettest day (Rx1day)
1909	80.8 mm (3.2 in)
1910	66.8 mm (2.6 in)
1911	36.1 mm (1.4 in)
1912	38.6 mm (1.5 in)
1913	41.4 mm (1.6 in)
1914	43.2 mm (1.7 in)
1915	47.0 mm (1.9 in)
1916	37.1 mm (1.5 in)
1917	43.2 mm (1.7 in)
1918	41.4 mm (1.6 in)
1919	40.6 mm (1.6 in)
1920	45.2 mm (1.8 in)
1921	26.9 mm (1.1 in)
1922	31.0 mm (1.2 in)
1923	42.9 mm (1.7 in)
1924	37.1 mm (1.5 in)
1925	49.8 mm (2.0 in)
1926	47.8 mm (1.9 in)
1927	45.0 mm (1.8 in)
1928	59.7 mm (2.4 in)
1929	35.1 mm (1.4 in)
1930	38.6 mm (1.5 in)
1931	20.3 mm (0.8 in)
1932	35.6 mm (1.4 in)
1933	30.5 mm (1.2 in)
1934	20.1 mm (0.8 in)
1935	29.7 mm (1.2 in)
1936	23.4 mm (0.9 in)
1937	81.0 mm (3.2 in)
1938	34.8 mm (1.4 in)
1939	27.9 mm (1.1 in)
1940	41.1 mm (1.6 in)
1941	66.0 mm (2.6 in)
1942	40.6 mm (1.6 in)
1943	35.6 mm (1.4 in)
1944	61.0 mm (2.4 in)
1945	19.6 mm (0.8 in)
1946	27.9 mm (1.1 in)
1947	15.2 mm (0.6 in)
1948	34.3 mm (1.4 in)
1949	36.8 mm (1.4 in)
1950	49.5 mm (1.9 in)
1951	24.1 mm (0.9 in)
1952	106.7 mm (4.2 in)
1953	45.7 mm (1.8 in)
1954	38.4 mm (1.5 in)
1955	46.7 mm (1.8 in)
1956	52.1 mm (2.1 in)
1957	48.3 mm (1.9 in)
1958	37.1 mm (1.5 in)
1959	22.9 mm (0.9 in)
1960	51.1 mm (2.0 in)
1961	33.5 mm (1.3 in)
1962	46.0 mm (1.8 in)
1963	65.0 mm (2.6 in)
1964	73.7 mm (2.9 in)
1965	82.6 mm (3.3 in)
1966	35.1 mm (1.4 in)
1967	40.6 mm (1.6 in)
1968	34.0 mm (1.3 in)
1969	40.6 mm (1.6 in)

Wettest five days (Rx5day)

The wettest five days of the year at Dumont 2 ENE, 1909 to 1969. The record is 211.3 mm (8.3 in) in 1909, marked on the chart; the median year is 63.3 mm (2.5 in).

Wettest five days (Rx5day) at Dumont 2 ENE by year
Year	Wettest five days (Rx5day)
1909	211.3 mm (8.3 in)
1910	83.3 mm (3.3 in)
1911	52.4 mm (2.1 in)
1912	72.9 mm (2.9 in)
1913	71.1 mm (2.8 in)
1914	80.7 mm (3.2 in)
1915	98.9 mm (3.9 in)
1916	47.2 mm (1.9 in)
1917	52.6 mm (2.1 in)
1918	67.1 mm (2.6 in)
1919	79.2 mm (3.1 in)
1920	63.2 mm (2.5 in)
1921	49.5 mm (1.9 in)
1922	50.6 mm (2.0 in)
1923	99.3 mm (3.9 in)
1924	49.8 mm (2.0 in)
1925	71.4 mm (2.8 in)
1926	110.9 mm (4.4 in)
1927	57.2 mm (2.3 in)
1928	59.7 mm (2.4 in)
1929	60.5 mm (2.4 in)
1930	49.8 mm (2.0 in)
1931	36.8 mm (1.4 in)
1932	64.4 mm (2.5 in)
1933	48.3 mm (1.9 in)
1934	23.7 mm (0.9 in)
1935	40.6 mm (1.6 in)
1936	26.4 mm (1.0 in)
1937	99.2 mm (3.9 in)
1938	46.7 mm (1.8 in)
1939	55.9 mm (2.2 in)
1940	79.2 mm (3.1 in)
1941	129.6 mm (5.1 in)
1942	78.2 mm (3.1 in)
1943	73.7 mm (2.9 in)
1944	71.7 mm (2.8 in)
1945	34.4 mm (1.4 in)
1946	35.3 mm (1.4 in)
1947	24.1 mm (0.9 in)
1948	86.4 mm (3.4 in)
1949	58.9 mm (2.3 in)
1950	84.3 mm (3.3 in)
1951	51.6 mm (2.0 in)
1952	177.8 mm (7.0 in)
1953	63.3 mm (2.5 in)
1954	42.2 mm (1.7 in)
1955	75.2 mm (3.0 in)
1956	62.1 mm (2.4 in)
1957	63.3 mm (2.5 in)
1958	48.5 mm (1.9 in)
1959	58.2 mm (2.3 in)
1960	75.8 mm (3.0 in)
1961	39.9 mm (1.6 in)
1962	119.1 mm (4.7 in)
1963	92.1 mm (3.6 in)
1964	147.3 mm (5.8 in)
1965	114.4 mm (4.5 in)
1966	53.1 mm (2.1 in)
1967	99.7 mm (3.9 in)
1968	70.6 mm (2.8 in)
1969	73.9 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Dumont 2 ENE, 1909 to 1969. The record is 43 days in 1959, marked on the chart; the median year is 25 days.

Longest dry spell (CDD) at Dumont 2 ENE by year
Year	Longest dry spell (CDD)
1909	18 days
1910	16 days
1911	27 days
1912	16 days
1913	30 days
1914	22 days
1915	28 days
1916	27 days
1917	26 days
1918	24 days
1919	29 days
1920	25 days
1921	38 days
1922	38 days
1923	21 days
1924	19 days
1925	17 days
1926	23 days
1927	22 days
1928	24 days
1929	20 days
1930	27 days
1931	27 days
1932	41 days
1933	28 days
1934	34 days
1935	24 days
1936	39 days
1937	30 days
1938	27 days
1939	33 days
1940	23 days
1941	27 days
1942	16 days
1943	19 days
1944	23 days
1945	13 days
1946	32 days
1947	31 days
1948	22 days
1949	25 days
1950	29 days
1951	20 days
1952	33 days
1953	21 days
1954	17 days
1955	31 days
1956	15 days
1957	17 days
1958	21 days
1959	43 days
1960	36 days
1961	18 days
1962	14 days
1963	29 days
1964	32 days
1965	42 days
1966	15 days
1967	24 days
1968	16 days
1969	29 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

55 years, 1910 to 1968

A day with at least 40.3 mm (1.6 in) of rain is expected about once in 2 years. A day with at least 101.4 mm (4.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Dumont 2 ENE: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	40.3 mm (1.6 in)
5 years	54.1 mm (2.1 in)
10 years	64.1 mm (2.5 in)
25 years	78.0 mm (3.1 in)
50 years	89.3 mm (3.5 in)
100 years	101.4 mm (4.0 in)	Longer than the 55 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, 55 years of values from 1910 to 1968.

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: 106.7 mm (4.2 in) in 1952; 82.6 mm (3.3 in) in 1965; 81.0 mm (3.2 in) in 1937.

Download the Data

Data for Dumont 2 ENE standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Dumont 2 ENE 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 2026-10-14 (14 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).