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Built 2026-10-16 (16 October 2026)

Isabel Weather Records (USC00394268)

Record envelope, standing records and threshold days for Isabel (USC00394268), South Dakota, United States, with 92 years of record.

Key Facts for Isabel

  • Isabel (USC00394268) is a weather station in South Dakota, United States at 45.40 latitude and -101.43 longitude, 732 m (2,402 ft) above sea level.
  • The station reports from 1920 to 2011, 92 years of record.
  • 1,460 records set at Isabel 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, 45.40 latitude, -101.43 longitude.
  • Elevation: 732 m (2,402 ft).
  • Period of record: 1920 to 2011, 92 years.
  • Eligible elements: none yet.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Isabel, with 2026 drawn through them The band shows the record high and record low for each calendar day at Isabel. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-2002040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Isabel. 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 Isabel, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan16.1 C (61.0 F)-32.2 C (-26.0 F)n/an/a
Feb16.1 C (61.0 F)-30.6 C (-23.1 F)n/an/a
Mar23.9 C (75.0 F)-23.3 C (-9.9 F)n/an/a
Apr28.3 C (82.9 F)-9.4 C (15.1 F)n/an/a
May36.1 C (97.0 F)-4.4 C (24.1 F)n/an/a
Jun35.0 C (95.0 F)4.4 C (39.9 F)n/an/a
Jul39.4 C (102.9 F)10.0 C (50.0 F)n/an/a
Aug32.2 C (90.0 F)6.1 C (43.0 F)n/an/a
Sep36.7 C (98.1 F)-2.8 C (27.0 F)n/an/a
Oct24.4 C (75.9 F)-21.1 C (-6.0 F)n/an/a
Nov20.6 C (69.1 F)-31.7 C (-25.1 F)n/an/a
Dec14.4 C (57.9 F)-33.3 C (-27.9 F)n/an/a

Which Years Hold Standing Records

1,460 standing records
Standing records at Isabel by the year they were set 1,460 records at Isabel still stand. 1923 holds the most, with 394. 01002003004001920: 581921: 2041922: 1611923: 3941924: 3231925: 320192019211922192319241925
1,460 records at Isabel still stand. 1923 holds the most, with 394.
Standing records at Isabel by the year they were set
Year setStanding records
192058
1921204
1922161
1923394
1924323
1925320

Wettest Day of Each Month

Jun: 81.3 mm (3.2 in)
Record daily precipitation for each month at Isabel The wettest day on record for each calendar month at Isabel. The most was 81.3 mm (3.2 in) on 5 June 2008. 0255075100 Jan: 7.6 mm (0.30 in), 14 January 2002 Jan Feb: 14.2 mm (0.6 in), 10 February 2009 Feb Mar: 50.8 mm (2.0 in), 8 March 2000 Mar Apr: 34.8 mm (1.4 in), 30 April 1949 Apr May: 58.4 mm (2.3 in), 29 May 2007 May Jun: 81.3 mm (3.2 in), 5 June 2008 Jun Jul: 54.6 mm (2.1 in), 2 July 2004 Jul Aug: 70.1 mm (2.8 in), 30 August 1951 Aug Sep: 40.6 mm (1.6 in), 7 September 1925 Sep Oct: 68.3 mm (2.7 in), 31 October 2004 Oct Nov: 35.6 mm (1.4 in), 4 November 1948 Nov Dec: 19.1 mm (0.8 in), 29 December 1923 Dec
The wettest day on record for each calendar month at Isabel. The most was 81.3 mm (3.2 in) on 5 June 2008.
Record daily precipitation for each month at Isabel
MonthRecord daily precipitation (mm)Date
Jan7.6 mm (0.30 in)14 January 2002
Feb14.2 mm (0.6 in)10 February 2009
Mar50.8 mm (2.0 in)8 March 2000
Apr34.8 mm (1.4 in)30 April 1949
May58.4 mm (2.3 in)29 May 2007
Jun81.3 mm (3.2 in)5 June 2008
Jul54.6 mm (2.1 in)2 July 2004
Aug70.1 mm (2.8 in)30 August 1951
Sep40.6 mm (1.6 in)7 September 1925
Oct68.3 mm (2.7 in)31 October 2004
Nov35.6 mm (1.4 in)4 November 1948
Dec19.1 mm (0.8 in)29 December 1923

Period of Record Coverage

1920 to 1925
Days with data per year at Isabel 6 years of record at Isabel, 1920 to 1925. 6 years have data for under 90 percent of days and are left out of rankings: 1920, 1921, 1922, 1923, 1924, 1925. 1920: 61 of 366 days1921: 178 of 365 days1922: 119 of 365 days1923: 206 of 365 days1924: 219 of 366 days1925: 245 of 365 days19201925
6 years of record at Isabel, 1920 to 1925. 6 years have data for under 90 percent of days and are left out of rankings: 1920, 1921, 1922, 1923, 1924, 1925.
Days with data per year at Isabel
YearDays with dataShare of yearComplete
19206117%No
192117849%No
192211933%No
192320656%No
192421960%No
192524567%No

Latest Records

0

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

Extremes by Year

1920 to 2011
Yearly extremes at Isabel: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)39.4 C (102.9 F)192531.4 C (88.4 F)6
Coldest night (TNn)-33.3 C (-27.9 F)1924-30.0 C (-22.0 F)6
Wettest day (Rx1day)81.3 mm (3.2 in)200837.7 mm (1.5 in)22
Wettest five days (Rx5day)158.3 mm (6.2 in)200842.4 mm (1.7 in)21
Longest dry spell (CDD)85 days195033 days22

Hottest day (TXx)

Hottest day (TXx) at Isabel by year The hottest day of the year at Isabel, 1920 to 2011. The record is 39.4 C (102.9 F) in 1925, marked on the chart; the median year is 31.4 C (88.4 F). 1020304019201940196019802000Record: 39.4 C (102.9 F) in 1925
The hottest day of the year at Isabel, 1920 to 2011. The record is 39.4 C (102.9 F) in 1925, marked on the chart; the median year is 31.4 C (88.4 F).
Hottest day (TXx) at Isabel by year
YearHottest day (TXx)
192014.4 C (57.9 F)
192128.3 C (82.9 F)
192221.7 C (71.1 F)
192337.8 C (100.0 F)
192434.4 C (93.9 F)
192539.4 C (102.9 F)
1948n/a
1949n/a
1950n/a
1951n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a

Coldest night (TNn)

Coldest night (TNn) at Isabel by year The coldest night of the year at Isabel, 1920 to 2011. The record is -33.3 C (-27.9 F) in 1924, marked on the chart; the median year is -30.0 C (-22.0 F). -35-32.5-30-27.5-25-22.519201940196019802000Record: -33.3 C (-27.9 F) in 1924
The coldest night of the year at Isabel, 1920 to 2011. The record is -33.3 C (-27.9 F) in 1924, marked on the chart; the median year is -30.0 C (-22.0 F).
Coldest night (TNn) at Isabel by year
YearColdest night (TNn)
1920-28.3 C (-18.9 F)
1921-31.7 C (-25.1 F)
1922-32.2 C (-26.0 F)
1923-24.4 C (-11.9 F)
1924-33.3 C (-27.9 F)
1925-27.8 C (-18.0 F)
1948n/a
1949n/a
1950n/a
1951n/a
2000n/a
2001n/a
2002n/a
2003n/a
2004n/a
2005n/a
2006n/a
2007n/a
2008n/a
2009n/a
2010n/a
2011n/a

Wettest day (Rx1day)

Wettest day (Rx1day) at Isabel by year The wettest day of the year at Isabel, 1920 to 2011. The record is 81.3 mm (3.2 in) in 2008, marked on the chart; the median year is 37.7 mm (1.5 in). 02040608010019201940196019802000Record: 81.3 mm (3.2 in) in 2008
The wettest day of the year at Isabel, 1920 to 2011. The record is 81.3 mm (3.2 in) in 2008, marked on the chart; the median year is 37.7 mm (1.5 in).
Wettest day (Rx1day) at Isabel by year
YearWettest day (Rx1day)
19204.6 mm (0.18 in)
192114.0 mm (0.6 in)
192210.2 mm (0.4 in)
192349.5 mm (1.9 in)
192439.4 mm (1.6 in)
192569.9 mm (2.8 in)
194835.6 mm (1.4 in)
194934.8 mm (1.4 in)
195036.8 mm (1.4 in)
195170.1 mm (2.8 in)
200050.8 mm (2.0 in)
200124.9 mm (1.0 in)
200218.5 mm (0.7 in)
200327.4 mm (1.1 in)
200468.3 mm (2.7 in)
200544.2 mm (1.7 in)
200626.9 mm (1.1 in)
200758.4 mm (2.3 in)
200881.3 mm (3.2 in)
200936.1 mm (1.4 in)
201038.6 mm (1.5 in)
201165.0 mm (2.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Isabel by year The wettest five days of the year at Isabel, 1920 to 2011. The record is 158.3 mm (6.2 in) in 2008, marked on the chart; the median year is 42.4 mm (1.7 in). 05010015020019201940196019802000Record: 158.3 mm (6.2 in) in 2008
The wettest five days of the year at Isabel, 1920 to 2011. The record is 158.3 mm (6.2 in) in 2008, marked on the chart; the median year is 42.4 mm (1.7 in).
Wettest five days (Rx5day) at Isabel by year
YearWettest five days (Rx5day)
19204.6 mm (0.18 in)
192124.4 mm (1.0 in)
19226.4 mm (0.25 in)
192355.5 mm (2.2 in)
192482.6 mm (3.3 in)
1925101.7 mm (4.0 in)
194839.4 mm (1.6 in)
194938.1 mm (1.5 in)
195036.8 mm (1.4 in)
195171.4 mm (2.8 in)
200069.1 mm (2.7 in)
200138.0 mm (1.5 in)
200221.3 mm (0.8 in)
200340.1 mm (1.6 in)
2004117.6 mm (4.6 in)
200544.2 mm (1.7 in)
200642.4 mm (1.7 in)
200777.5 mm (3.1 in)
2008158.3 mm (6.2 in)
200942.0 mm (1.7 in)
201064.8 mm (2.6 in)
2011n/a

Longest dry spell (CDD)

Longest dry spell (CDD) at Isabel by year The longest dry spell of the year at Isabel, 1920 to 2011. The record is 85 days in 1950, marked on the chart; the median year is 33 days. 025507510019201940196019802000Record: 85 days in 1950
The longest dry spell of the year at Isabel, 1920 to 2011. The record is 85 days in 1950, marked on the chart; the median year is 33 days.
Longest dry spell (CDD) at Isabel by year
YearLongest dry spell (CDD)
192033 days
192162 days
192233 days
192326 days
192442 days
192528 days
194826 days
194950 days
195085 days
195122 days
200019 days
200147 days
200249 days
200333 days
200427 days
200530 days
200670 days
200738 days
200833 days
200932 days
201023 days
20111 day

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 Isabel standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Isabel 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 . Last revised (2025-12-31).