Interior Weather Records (USC00394179)

Record envelope, standing records and threshold days for Interior (USC00394179), South Dakota, United States, with 55 years of record.

Key Facts for Interior

Interior (USC00394179) is a weather station in South Dakota, United States at 43.73 latitude and -101.98 longitude, 726 m (2,382 ft) above sea level.
The station reports from 1897 to 1951, 55 years of record.
1,464 records set at Interior still stand.
Records are tracked for no element yet: an element needs 30 years of data to be eligible.

About the Station

Location: South Dakota, United States, 43.73 latitude, -101.98 longitude.
Elevation: 726 m (2,382 ft).
Period of record: 1897 to 1951, 55 years.
Eligible elements: none yet.

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 Interior. 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 Interior, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	15.6 C (60.1 F)	-36.1 C (-33.0 F)	n/a	n/a
Feb	19.4 C (66.9 F)	-38.9 C (-38.0 F)	n/a	n/a
Mar	26.1 C (79.0 F)	-24.4 C (-11.9 F)	n/a	n/a
Apr	33.3 C (91.9 F)	-20.0 C (-4.0 F)	n/a	n/a
May	37.8 C (100.0 F)	-2.8 C (27.0 F)	n/a	n/a
Jun	43.3 C (109.9 F)	-3.9 C (25.0 F)	n/a	n/a
Jul	43.9 C (111.0 F)	5.6 C (42.1 F)	n/a	n/a
Aug	43.3 C (109.9 F)	-1.7 C (28.9 F)	n/a	n/a
Sep	43.3 C (109.9 F)	-14.4 C (6.1 F)	n/a	n/a
Oct	32.2 C (90.0 F)	-16.7 C (1.9 F)	n/a	n/a
Nov	26.1 C (79.0 F)	-25.0 C (-13.0 F)	n/a	n/a
Dec	18.3 C (64.9 F)	-34.4 C (-29.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Interior still stand. 1919 holds the most, with 160.

Wettest Day of Each Month

May: 77.5 mm (3.1 in)

The wettest day on record for each calendar month at Interior. The most was 77.5 mm (3.1 in) on 31 May 1918.

Record daily precipitation for each month at Interior
Month	Record daily precipitation (mm)	Date
Jan	15.2 mm (0.6 in)	26 January 1918
Feb	14.2 mm (0.6 in)	8 February 1901
Mar	53.3 mm (2.1 in)	26 March 1902
Apr	50.8 mm (2.0 in)	30 April 1899
May	77.5 mm (3.1 in)	31 May 1918
Jun	55.6 mm (2.2 in)	6 June 1951
Jul	44.5 mm (1.8 in)	16 July 1923
Aug	38.1 mm (1.5 in)	5 August 1899
Sep	43.9 mm (1.7 in)	1 September 1951
Oct	40.4 mm (1.6 in)	7 October 1901
Nov	18.5 mm (0.7 in)	16 November 1917
Dec	10.2 mm (0.4 in)	21 December 1918

Period of Record Coverage

1897 to 1924

16 years of record at Interior, 1897 to 1924. 9 years have data for under 90 percent of days and are left out of rankings: 1897, 1900, 1901, 1902, 1903, 1916, 1922, 1923 and others.

Days with data per year at Interior
Year	Days with data	Share of year	Complete
1897	55	15%	No
1898	356	98%	Yes
1899	358	98%	Yes
1900	316	87%	No
1901	233	64%	No
1902	79	22%	No
1903	53	15%	No
1916	324	89%	No
1917	357	98%	Yes
1918	348	95%	Yes
1919	354	97%	Yes
1920	342	93%	Yes
1921	342	94%	Yes
1922	314	86%	No
1923	291	80%	No
1924	51	14%	No

Latest Records

No records were set at this station in the latest data.

Extremes by Year

1897 to 1951

Yearly extremes at Interior: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	43.9 C (111.0 F)	1899	40.0 C (104.0 F)	16
Coldest night (TNn)	-38.9 C (-38.0 F)	1899	-30.8 C (-23.5 F)	16
Wettest day (Rx1day)	77.5 mm (3.1 in)	1918	34.8 mm (1.4 in)	20
Wettest five days (Rx5day)	88.9 mm (3.5 in)	1900	47.6 mm (1.9 in)	20
Longest dry spell (CDD)	52 days	1917	33 days	20

Hottest day (TXx)

The hottest day of the year at Interior, 1897 to 1951. The record is 43.9 C (111.0 F) in 1899, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Interior by year
Year	Hottest day (TXx)
1897	22.2 C (72.0 F)
1898	43.3 C (109.9 F)
1899	43.9 C (111.0 F)
1900	43.9 C (111.0 F)
1901	35.6 C (96.1 F)
1902	21.1 C (70.0 F)
1903	29.4 C (84.9 F)
1916	40.0 C (104.0 F)
1917	40.6 C (105.1 F)
1918	37.8 C (100.0 F)
1919	40.6 C (105.1 F)
1920	41.1 C (106.0 F)
1921	40.0 C (104.0 F)
1922	40.6 C (105.1 F)
1923	38.3 C (100.9 F)
1924	14.4 C (57.9 F)
1948	n/a
1949	n/a
1950	n/a
1951	n/a

Coldest night (TNn)

The coldest night of the year at Interior, 1897 to 1951. The record is -38.9 C (-38.0 F) in 1899, marked on the chart; the median year is -30.8 C (-23.5 F).

Coldest night (TNn) at Interior by year
Year	Coldest night (TNn)
1897	-28.9 C (-20.0 F)
1898	-26.1 C (-15.0 F)
1899	-38.9 C (-38.0 F)
1900	-30.0 C (-22.0 F)
1901	-34.4 C (-29.9 F)
1902	-36.1 C (-33.0 F)
1903	-17.8 C (0.0 F)
1916	-33.9 C (-29.0 F)
1917	-36.1 C (-33.0 F)
1918	-34.4 C (-29.9 F)
1919	-30.6 C (-23.1 F)
1920	-31.7 C (-25.1 F)
1921	-26.1 C (-15.0 F)
1922	-31.1 C (-24.0 F)
1923	-26.1 C (-15.0 F)
1924	-28.3 C (-18.9 F)
1948	n/a
1949	n/a
1950	n/a
1951	n/a

Wettest day (Rx1day)

The wettest day of the year at Interior, 1897 to 1951. The record is 77.5 mm (3.1 in) in 1918, marked on the chart; the median year is 34.8 mm (1.4 in).

Wettest day (Rx1day) at Interior by year
Year	Wettest day (Rx1day)
1897	10.2 mm (0.4 in)
1898	50.8 mm (2.0 in)
1899	50.8 mm (2.0 in)
1900	33.0 mm (1.3 in)
1901	40.4 mm (1.6 in)
1902	53.3 mm (2.1 in)
1903	25.4 mm (1.0 in)
1916	35.6 mm (1.4 in)
1917	26.4 mm (1.0 in)
1918	77.5 mm (3.1 in)
1919	27.2 mm (1.1 in)
1920	37.1 mm (1.5 in)
1921	48.3 mm (1.9 in)
1922	32.3 mm (1.3 in)
1923	44.5 mm (1.8 in)
1924	10.2 mm (0.4 in)
1948	34.0 mm (1.3 in)
1949	30.7 mm (1.2 in)
1950	25.1 mm (1.0 in)
1951	55.6 mm (2.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Interior, 1897 to 1951. The record is 88.9 mm (3.5 in) in 1900, marked on the chart; the median year is 47.6 mm (1.9 in).

Wettest five days (Rx5day) at Interior by year
Year	Wettest five days (Rx5day)
1897	15.3 mm (0.6 in)
1898	50.8 mm (2.0 in)
1899	76.2 mm (3.0 in)
1900	88.9 mm (3.5 in)
1901	56.7 mm (2.2 in)
1902	3.8 mm (0.15 in)
1903	25.4 mm (1.0 in)
1916	41.3 mm (1.6 in)
1917	36.8 mm (1.4 in)
1918	61.8 mm (2.4 in)
1919	31.8 mm (1.3 in)
1920	59.5 mm (2.3 in)
1921	48.3 mm (1.9 in)
1922	42.0 mm (1.7 in)
1923	76.8 mm (3.0 in)
1924	10.2 mm (0.4 in)
1948	35.0 mm (1.4 in)
1949	60.6 mm (2.4 in)
1950	46.8 mm (1.8 in)
1951	74.2 mm (2.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Interior, 1897 to 1951. The record is 52 days in 1917, marked on the chart; the median year is 33 days.

Longest dry spell (CDD) at Interior by year
Year	Longest dry spell (CDD)
1897	29 days
1898	50 days
1899	44 days
1900	33 days
1901	31 days
1902	11 days
1903	17 days
1916	29 days
1917	52 days
1918	33 days
1919	32 days
1920	28 days
1921	48 days
1922	42 days
1923	33 days
1924	16 days
1948	52 days
1949	49 days
1950	35 days
1951	27 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.

Download the Data

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