Wolsey Weather Records (USC00399430)

Record envelope, standing records and threshold days for Wolsey (USC00399430), South Dakota, United States, with 86 years of record.

Key Facts for Wolsey

Wolsey (USC00399430) is a weather station in South Dakota, United States at 44.42 latitude and -98.48 longitude, 412 m (1,352 ft) above sea level.
The station reports from 1893 to 1978, 86 years of record.
2 records set at Wolsey still stand.
Records are tracked for prcp, snow: an element needs 30 years of data to be eligible.
Wolsey set a daily record precipitation of 4.3 mm (0.17 in) on 22 February 1978.

About the Station

Location: South Dakota, United States, 44.42 latitude, -98.48 longitude.
Elevation: 412 m (1,352 ft).
Period of record: 1893 to 1978, 86 years.
Eligible elements: prcp, snow.

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 Wolsey. 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 Wolsey, 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	12.8 C (55.0 F)	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

2 standing records

2 records at Wolsey still stand. 1972 holds the most, with 2.

Wettest Day of Each Month

Jun: 88.9 mm (3.5 in)

The wettest day on record for each calendar month at Wolsey. The most was 88.9 mm (3.5 in) on 16 June 1900.

Record daily precipitation for each month at Wolsey
Month	Record daily precipitation (mm)	Date
Jan	24.6 mm (1.0 in)	14 January 1952
Feb	40.6 mm (1.6 in)	23 February 1977
Mar	50.8 mm (2.0 in)	2 March 1906
Apr	62.5 mm (2.5 in)	12 April 1970
May	71.6 mm (2.8 in)	3 May 1905
Jun	88.9 mm (3.5 in)	16 June 1900
Jul	62.5 mm (2.5 in)	13 July 1970
Aug	88.9 mm (3.5 in)	4 August 1900
Sep	54.1 mm (2.1 in)	5 September 1958
Oct	39.1 mm (1.5 in)	11 October 1961
Nov	43.7 mm (1.7 in)	2 November 1972
Dec	17.8 mm (0.7 in)	24 December 1893

Period of Record Coverage

1972 to 1972

1 years of record at Wolsey, 1972 to 1972. 1 years have data for under 90 percent of days and are left out of rankings: 1972.

Latest Records

Latest records at Wolsey
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
22 February 1978	Wolsey, US	daily rain	4.3 mm (0.17 in)	1.8 mm (0.07 in)	12 years	14 of 100 (Routine)
12 February 1978	Wolsey, US	daily rain	7.9 mm (0.31 in)	4.9 mm (0.19 in)	70 years	20 of 100 (Routine)
12 February 1978	Wolsey, US	daily snowfall	7.6 cm (3.0 in)	5.1 cm (2.0 in)	70 years	38 of 100 (Notable)
11 February 1978	Wolsey, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	79 years	36 of 100 (Notable)
7 February 1978	Wolsey, US	daily snowfall (Tie)	5.1 cm (2.0 in)	tie	72 years	7 of 100 (Routine)
30 January 1978	Wolsey, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	72 years	36 of 100 (Notable)
30 January 1978	Wolsey, US	daily rain	2.5 mm (0.10 in)	0.2 mm (0.01 in)	72 years	20 of 100 (Routine)
31 December 1977	Wolsey, US	daily rain	8.9 mm (0.35 in)	6.6 mm (0.26 in)	4 years	20 of 100 (Routine)
17 December 1977	Wolsey, US	daily rain	5.3 mm (0.21 in)	0.2 mm (0.01 in)	10 years	11 of 100 (Routine)
20 November 1977	Wolsey, US	daily rain	10.7 mm (0.4 in)	6.4 mm (0.25 in)	4 years	20 of 100 (Routine)
9 November 1977	Wolsey, US	daily rain	6.6 mm (0.26 in)	1.5 mm (0.06 in)	72 years	20 of 100 (Routine)
8 November 1977	Wolsey, US	daily rain	35.6 mm (1.4 in)	12.5 mm (0.5 in)	7 years	31 of 100 (Routine)
23 September 1977	Wolsey, US	daily rain	28.2 mm (1.1 in)	16.8 mm (0.7 in)	16 years	30 of 100 (Routine)
21 September 1977	Wolsey, US	daily rain	24.1 mm (0.9 in)	7.1 mm (0.28 in)	12 years	18 of 100 (Routine)
2 September 1977	Wolsey, US	daily rain	5.6 mm (0.22 in)	2.3 mm (0.09 in)	4 years	11 of 100 (Routine)
27 August 1977	Wolsey, US	daily rain	10.7 mm (0.4 in)	1.8 mm (0.07 in)	12 years	12 of 100 (Routine)
26 August 1977	Wolsey, US	daily rain	8.9 mm (0.35 in)	3.8 mm (0.15 in)	76 years	20 of 100 (Routine)
11 July 1977	Wolsey, US	daily rain	16.5 mm (0.6 in)	3.8 mm (0.15 in)	78 years	20 of 100 (Routine)
29 March 1977	Wolsey, US	daily rain	46.0 mm (1.8 in)	40.9 mm (1.6 in)	7 years	50 of 100 (Notable)
26 March 1977	Wolsey, US	daily rain	5.3 mm (0.21 in)	0.2 mm (0.01 in)	2 years	8 of 100 (Routine)

Extremes by Year

1893 to 1978

Yearly extremes at Wolsey: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	12.8 C (55.0 F)	1972	12.8 C (55.0 F)	1
Wettest day (Rx1day)	88.9 mm (3.5 in)	1900	50.3 mm (2.0 in)	40
Wettest five days (Rx5day)	157.1 mm (6.2 in)	1906	69.6 mm (2.7 in)	40
Longest dry spell (CDD)	63 days	1964	31 days	40

Hottest day (TXx)

The hottest day of the year at Wolsey, 1893 to 1978. The record is 12.8 C (55.0 F) in 1972, marked on the chart; the median year is 12.8 C (55.0 F).

Hottest day (TXx) at Wolsey by year
Year	Hottest day (TXx)
1893	n/a
1898	n/a
1899	n/a
1900	n/a
1901	n/a
1902	n/a
1903	n/a
1904	n/a
1905	n/a
1906	n/a
1907	n/a
1908	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	12.8 C (55.0 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a

Wettest day (Rx1day)

The wettest day of the year at Wolsey, 1893 to 1978. The record is 88.9 mm (3.5 in) in 1900, marked on the chart; the median year is 50.3 mm (2.0 in).

Wettest day (Rx1day) at Wolsey by year
Year	Wettest day (Rx1day)
1893	45.7 mm (1.8 in)
1898	63.5 mm (2.5 in)
1899	25.4 mm (1.0 in)
1900	88.9 mm (3.5 in)
1901	53.3 mm (2.1 in)
1902	48.3 mm (1.9 in)
1903	28.7 mm (1.1 in)
1904	50.8 mm (2.0 in)
1905	88.1 mm (3.5 in)
1906	82.6 mm (3.3 in)
1907	71.6 mm (2.8 in)
1908	66.0 mm (2.6 in)
1951	54.9 mm (2.2 in)
1952	24.6 mm (1.0 in)
1953	41.1 mm (1.6 in)
1954	47.0 mm (1.9 in)
1955	46.0 mm (1.8 in)
1956	71.6 mm (2.8 in)
1957	49.8 mm (2.0 in)
1958	54.1 mm (2.1 in)
1959	46.7 mm (1.8 in)
1960	58.2 mm (2.3 in)
1961	71.6 mm (2.8 in)
1962	53.1 mm (2.1 in)
1963	34.8 mm (1.4 in)
1964	53.1 mm (2.1 in)
1965	24.9 mm (1.0 in)
1966	41.4 mm (1.6 in)
1967	76.5 mm (3.0 in)
1968	53.1 mm (2.1 in)
1969	42.2 mm (1.7 in)
1970	62.5 mm (2.5 in)
1971	31.5 mm (1.2 in)
1972	56.4 mm (2.2 in)
1973	39.6 mm (1.6 in)
1974	45.0 mm (1.8 in)
1975	20.8 mm (0.8 in)
1976	53.8 mm (2.1 in)
1977	46.0 mm (1.8 in)
1978	7.9 mm (0.31 in)

Wettest five days (Rx5day)

The wettest five days of the year at Wolsey, 1893 to 1978. The record is 157.1 mm (6.2 in) in 1906, marked on the chart; the median year is 69.6 mm (2.7 in).

Wettest five days (Rx5day) at Wolsey by year
Year	Wettest five days (Rx5day)
1893	45.7 mm (1.8 in)
1898	106.2 mm (4.2 in)
1899	40.6 mm (1.6 in)
1900	133.6 mm (5.3 in)
1901	104.6 mm (4.1 in)
1902	54.4 mm (2.1 in)
1903	42.7 mm (1.7 in)
1904	58.2 mm (2.3 in)
1905	134.4 mm (5.3 in)
1906	157.1 mm (6.2 in)
1907	95.2 mm (3.7 in)
1908	82.3 mm (3.2 in)
1951	93.8 mm (3.7 in)
1952	41.5 mm (1.6 in)
1953	92.7 mm (3.6 in)
1954	50.3 mm (2.0 in)
1955	60.2 mm (2.4 in)
1956	113.5 mm (4.5 in)
1957	90.4 mm (3.6 in)
1958	59.7 mm (2.4 in)
1959	53.8 mm (2.1 in)
1960	67.1 mm (2.6 in)
1961	104.8 mm (4.1 in)
1962	80.5 mm (3.2 in)
1963	48.0 mm (1.9 in)
1964	57.7 mm (2.3 in)
1965	75.2 mm (3.0 in)
1966	72.1 mm (2.8 in)
1967	154.2 mm (6.1 in)
1968	86.9 mm (3.4 in)
1969	56.9 mm (2.2 in)
1970	93.2 mm (3.7 in)
1971	47.7 mm (1.9 in)
1972	85.0 mm (3.3 in)
1973	63.8 mm (2.5 in)
1974	65.3 mm (2.6 in)
1975	48.9 mm (1.9 in)
1976	53.8 mm (2.1 in)
1977	77.2 mm (3.0 in)
1978	16.3 mm (0.6 in)

Longest dry spell (CDD)

The longest dry spell of the year at Wolsey, 1893 to 1978. The record is 63 days in 1964, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Wolsey by year
Year	Longest dry spell (CDD)
1893	35 days
1898	31 days
1899	29 days
1900	41 days
1901	28 days
1902	26 days
1903	46 days
1904	26 days
1905	34 days
1906	17 days
1907	45 days
1908	30 days
1951	33 days
1952	56 days
1953	26 days
1954	25 days
1955	20 days
1956	41 days
1957	45 days
1958	52 days
1959	44 days
1960	30 days
1961	39 days
1962	27 days
1963	20 days
1964	63 days
1965	26 days
1966	31 days
1967	62 days
1968	51 days
1969	18 days
1970	33 days
1971	26 days
1972	31 days
1973	18 days
1974	48 days
1975	41 days
1976	39 days
1977	29 days
1978	21 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, 1899 to 1977

A day with at least 49.9 mm (2.0 in) of rain is expected about once in 2 years. A day with at least 100.2 mm (3.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Wolsey: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	49.9 mm (2.0 in)
5 years	65.6 mm (2.6 in)
10 years	75.0 mm (3.0 in)
25 years	85.9 mm (3.4 in)
50 years	93.3 mm (3.7 in)	Longer than the 34 years of record
100 years	100.2 mm (3.9 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 1899 to 1977.

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: 88.9 mm (3.5 in) in 1900; 88.1 mm (3.5 in) in 1905; 82.6 mm (3.3 in) in 1906.

Download the Data

Data for Wolsey standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Wolsey 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 2026-10-13 (13 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).