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Nemo South Dakota Weather Records (USR0000SNEM)

Record envelope, standing records and threshold days for Nemo South Dakota (USR0000SNEM), South Dakota, United States, with 31 years of record.

Key Facts for Nemo South Dakota

  • Nemo South Dakota (USR0000SNEM) is a weather station in South Dakota, United States at 44.19 latitude and -103.51 longitude, 1,416 m (4,644 ft) above sea level.
  • The station reports from 1993 to 2023, 31 years of record.
  • 1,464 records set at Nemo South Dakota still stand.
  • Records are tracked for tmax, tmin: an element needs 30 years of data to be eligible.
  • Nemo South Dakota set a daily record high minimum temperature of 9.4 C (48.9 F) on 10 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: South Dakota, United States, 44.19 latitude, -103.51 longitude.
  • Elevation: 1,416 m (4,644 ft).
  • Period of record: 1993 to 2023, 31 years.
  • Eligible elements: tmax, tmin.

Daily Record Envelope and 2026

30 days at or beyond a record
Daily record high and record low at Nemo South Dakota, with 2026 drawn through them The band shows the record high and record low for each calendar day at Nemo South Dakota. The lines show the 2026 daily maximum and minimum. 30 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -40-200204060 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Nemo South Dakota. The lines show the 2026 daily maximum and minimum. 30 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Nemo South Dakota, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan22.8 C (73.0 F)-36.1 C (-33.0 F)15.0 C (59.0 F)-28.3 C (-18.9 F)
Feb21.7 C (71.1 F)-39.4 C (-38.9 F)17.8 C (64.0 F)-20.6 C (-5.1 F)
Mar27.8 C (82.0 F)-33.3 C (-27.9 F)27.8 C (82.0 F)-20.0 C (-4.0 F)
Apr28.3 C (82.9 F)-22.8 C (-9.0 F)27.8 C (82.0 F)-7.8 C (18.0 F)
May33.9 C (93.0 F)-10.6 C (12.9 F)31.1 C (88.0 F)-8.3 C (17.1 F)
Jun38.9 C (102.0 F)-2.8 C (27.0 F)31.7 C (89.1 F)-1.1 C (30.0 F)
Jul40.6 C (105.1 F)0.0 C (32.0 F)38.9 C (102.0 F)8.3 C (46.9 F)
Aug38.3 C (100.9 F)-1.7 C (28.9 F)37.2 C (99.0 F)2.8 C (37.0 F)
Sep37.8 C (100.0 F)-9.4 C (15.1 F)31.7 C (89.1 F)3.3 C (37.9 F)
Oct32.2 C (90.0 F)-27.2 C (-17.0 F)30.6 C (87.1 F)0.0 C (32.0 F)
Nov27.2 C (81.0 F)-30.0 C (-22.0 F)n/an/a
Dec22.2 C (72.0 F)-32.8 C (-27.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Nemo South Dakota by the year they were set 1,464 records at Nemo South Dakota still stand. 1996 holds the most, with 62. 0204060801993: 461994: 501995: 501996: 621997: 511998: 351999: 432000: 552001: 412002: 522003: 572004: 422005: 612006: 442007: 452008: 312009: 452010: 442011: 342012: 382013: 362014: 572015: 272016: 392017: 442018: 372019: 302020: 442021: 362022: 342023: 302024: 332025: 492026: 42199319972001200520092013201720212025
1,464 records at Nemo South Dakota still stand. 1996 holds the most, with 62.
Standing records at Nemo South Dakota by the year they were set
Year setStanding records
199346
199450
199550
199662
199751
199835
199943
200055
200141
200252
200357
200442
200561
200644
200745
200831
200945
201044
201134
201238
201336
201457
201527
201639
201744
201837
201930
202044
202136
202234
202330
202433
202549
202642

All-Time Record Progression

1 new records
When Nemo South Dakota set new all-time records 1 all-time records were set at Nemo South Dakota between 13 January 2024 and 13 January 2024. Each dot is a new record. Record low maximum temperature13 January 2024: Record low maximum temperature -23.9 C (-11.0 F)2025
1 all-time records were set at Nemo South Dakota between 13 January 2024 and 13 January 2024. Each dot is a new record.
When Nemo South Dakota set new all-time records
DateKindDetail
2024-01-13Record low maximum temperatureRecord low maximum temperature -23.9 C (-11.0 F)

Period of Record Coverage

1993 to 2026
Days with data per year at Nemo South Dakota 34 years of record at Nemo South Dakota, 1993 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1993, 2026. 1993: 233 of 365 days1994: 344 of 365 days1995: 362 of 365 days1996: 363 of 366 days1997: 356 of 365 days1998: 362 of 365 days1999: 363 of 365 days2000: 362 of 366 days2001: 344 of 365 days2002: 365 of 365 days2003: 364 of 365 days2004: 364 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 364 of 365 days2008: 366 of 366 days2009: 363 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 364 of 365 days2014: 365 of 365 days2015: 364 of 365 days2016: 366 of 366 days2017: 364 of 365 days2018: 364 of 365 days2019: 365 of 365 days2020: 365 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 364 of 365 days2024: 365 of 366 days2025: 364 of 365 days2026: 282 of 365 days1995200020052010201520202025
34 years of record at Nemo South Dakota, 1993 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1993, 2026.
Days with data per year at Nemo South Dakota
YearDays with dataShare of yearComplete
199323364%No
199434494%Yes
199536299%Yes
199636399%Yes
199735698%Yes
199836299%Yes
199936399%Yes
200036299%Yes
200134494%Yes
2002365100%Yes
2003364100%Yes
200436499%Yes
2005365100%Yes
2006365100%Yes
2007364100%Yes
2008366100%Yes
200936399%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013364100%Yes
2014365100%Yes
2015364100%Yes
2016366100%Yes
2017364100%Yes
2018364100%Yes
2019365100%Yes
2020365100%Yes
2021365100%Yes
2022364100%Yes
2023364100%Yes
2024365100%Yes
2025364100%Yes
202628277%No

Latest Records

20
Latest records at Nemo South Dakota
DateStationRecordValueBeat old record byOld record stoodSignificance
10 October 2026Nemo South Dakota, USdaily high min (Provisional)9.4 C (48.9 F)6.1 C (11.0 F)16 years19 of 100 (Routine)
5 October 2026Nemo South Dakota, USdaily high max (Tie, Provisional)30.6 C (87.1 F)tie16 years1 of 100 (Routine)
28 September 2026Nemo South Dakota, USdaily high min (Provisional)10.0 C (50.0 F)0.6 C (1.1 F)1 year4 of 100 (Routine)
23 September 2026Nemo South Dakota, USdaily high min (Tie, Provisional)8.9 C (48.0 F)tie9 years1 of 100 (Routine)
21 September 2026Nemo South Dakota, USdaily high min (Provisional)9.4 C (48.9 F)1.1 C (2.0 F)8 years7 of 100 (Routine)
19 September 2026Nemo South Dakota, USdaily high min (Provisional)11.1 C (52.0 F)0.5 C (0.9 F)12 years7 of 100 (Routine)
7 September 2026Nemo South Dakota, USdaily high min (Provisional)12.8 C (55.0 F)0.6 C (1.1 F)12 years7 of 100 (Routine)
4 August 2026Nemo South Dakota, USdaily low min (Tie)2.8 C (37.0 F)tie13 years1 of 100 (Routine)
2 August 2026Nemo South Dakota, USdaily high max37.2 C (99.0 F)2.2 C (4.0 F)1 year7 of 100 (Routine)
1 August 2026Nemo South Dakota, USdaily high max35.6 C (96.1 F)0.6 C (1.1 F)4 years5 of 100 (Routine)
27 July 2026Nemo South Dakota, USdaily high min16.1 C (61.0 F)1.7 C (3.1 F)19 years13 of 100 (Routine)
26 July 2026Nemo South Dakota, USdaily high max37.2 C (99.0 F)3.3 C (5.9 F)20 years16 of 100 (Routine)
26 July 2026Nemo South Dakota, USdaily high min18.3 C (64.9 F)3.3 C (5.9 F)4 years13 of 100 (Routine)
25 July 2026Nemo South Dakota, USdaily high max38.9 C (102.0 F)1.1 C (2.0 F)1 year5 of 100 (Routine)
20 July 2026Nemo South Dakota, USdaily high min16.7 C (62.1 F)1.7 C (3.1 F)24 years15 of 100 (Routine)
19 July 2026Nemo South Dakota, USdaily high max (Tie)36.7 C (98.1 F)tie13 years1 of 100 (Routine)
18 July 2026Nemo South Dakota, USdaily high min (Tie)18.3 C (64.9 F)tie20 years2 of 100 (Routine)
14 July 2026Nemo South Dakota, USdaily high min17.8 C (64.0 F)2.8 C (5.0 F)15 years15 of 100 (Routine)
13 July 2026Nemo South Dakota, USdaily high min20.6 C (69.1 F)5.0 C (9.0 F)31 years27 of 100 (Routine)
13 July 2026Nemo South Dakota, USdaily high max37.8 C (100.0 F)0.6 C (1.1 F)23 years10 of 100 (Routine)

Climate Trend

30 complete years, 1995 to 2025
Annual mean temperature at Nemo South Dakota as warming stripes, 1995 to 2025 One stripe for each of 30 complete years at Nemo South Dakota, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (42.9 F); red stripes are warmer. The coolest year was 1996, at 4.3 C (39.7 F), and the warmest was 2024, at 7.4 C (45.3 F). The strongest colour marks a difference of 1.8 C (3.2 F). 1995: 5.4 C, -0.7 C from the station mean1996: 4.3 C, -1.8 C from the station mean1997: 5.3 C, -0.7 C from the station mean1998: 6.3 C, +0.2 C from the station mean1999: 6.9 C, +0.8 C from the station mean2000: 5.9 C, -0.1 C from the station mean2002: 5.5 C, -0.5 C from the station mean2003: 6.2 C, +0.2 C from the station mean2004: 6.4 C, +0.4 C from the station mean2005: 6.7 C, +0.6 C from the station mean2006: 6.8 C, +0.7 C from the station mean2007: 6.7 C, +0.6 C from the station mean2008: 5.0 C, -1.0 C from the station mean2009: 5.1 C, -0.9 C from the station mean2010: 6.2 C, +0.1 C from the station mean2011: 5.7 C, -0.3 C from the station mean2012: 7.3 C, +1.2 C from the station mean2013: 5.4 C, -0.7 C from the station mean2014: 5.1 C, -1.0 C from the station mean2015: 6.8 C, +0.7 C from the station mean2016: 7.2 C, +1.2 C from the station mean2017: 6.4 C, +0.3 C from the station mean2018: 5.4 C, -0.7 C from the station mean2019: 4.5 C, -1.5 C from the station mean2020: 6.3 C, +0.2 C from the station mean2021: 6.7 C, +0.6 C from the station mean2022: 5.8 C, -0.2 C from the station mean2023: 6.5 C, +0.4 C from the station mean2024: 7.4 C, +1.4 C from the station mean2025: 6.7 C, +0.6 C from the station mean1995200020052010201520202025
One stripe for each of 30 complete years at Nemo South Dakota, 1995 to 2025. Blue stripes are years cooler than the station's own mean of 6.1 C (42.9 F); red stripes are warmer. The coolest year was 1996, at 4.3 C (39.7 F), and the warmest was 2024, at 7.4 C (45.3 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Nemo South Dakota as warming stripes, 1995 to 2025
YearAnnual mean temperatureDifference from the station mean
19955.4 C-0.67 C
19964.3 C-1.80 C
19975.3 C-0.74 C
19986.3 C+0.23 C
19996.9 C+0.84 C
20005.9 C-0.12 C
20025.5 C-0.55 C
20036.2 C+0.15 C
20046.4 C+0.35 C
20056.7 C+0.59 C
20066.8 C+0.74 C
20076.7 C+0.62 C
20085.0 C-1.05 C
20095.1 C-0.93 C
20106.2 C+0.10 C
20115.7 C-0.33 C
20127.3 C+1.19 C
20135.4 C-0.68 C
20145.1 C-0.97 C
20156.8 C+0.72 C
20167.2 C+1.17 C
20176.4 C+0.30 C
20185.4 C-0.70 C
20194.5 C-1.53 C
20206.3 C+0.23 C
20216.7 C+0.61 C
20225.8 C-0.22 C
20236.5 C+0.41 C
20247.4 C+1.35 C
20256.7 C+0.59 C

The fitted trend in annual mean temperature here over 1995 to 2025 is 0.2 C (-0.1 to 0.6) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.4 F (-0.2 to 1.0) per decade. The slope is a straight line fitted to 30 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Nemo South Dakota
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.2 C (-0.1 to 0.6) per decade0.4 F (-0.2 to 1.0) per decade1995 to 202530Not clearly different from zero
Mean daily maximum0.1 C (-0.3 to 0.5) per decade0.2 F (-0.6 to 1.0) per decade1995 to 202530Not clearly different from zero
Mean daily minimum0.4 C (0.1 to 0.7) per decade0.7 F (0.2 to 1.2) per decade1995 to 202530Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1993 to 2026
Yearly extremes at Nemo South Dakota: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)40.6 C (105.1 F)200636.1 C (97.0 F)34
Coldest night (TNn)-39.4 C (-38.9 F)1996-30.8 C (-23.5 F)34

Hottest day (TXx)

Hottest day (TXx) at Nemo South Dakota by year The hottest day of the year at Nemo South Dakota, 1993 to 2026. The record is 40.6 C (105.1 F) in 2006, marked on the chart; the median year is 36.1 C (97.0 F). 3032.53537.54042.5200020102020Record: 40.6 C (105.1 F) in 2006
The hottest day of the year at Nemo South Dakota, 1993 to 2026. The record is 40.6 C (105.1 F) in 2006, marked on the chart; the median year is 36.1 C (97.0 F).
Hottest day (TXx) at Nemo South Dakota by year
YearHottest day (TXx)
199331.1 C (88.0 F)
199435.6 C (96.1 F)
199535.6 C (96.1 F)
199633.9 C (93.0 F)
199733.3 C (91.9 F)
199837.8 C (100.0 F)
199936.7 C (98.1 F)
200036.1 C (97.0 F)
200136.1 C (97.0 F)
200238.9 C (102.0 F)
200338.3 C (100.9 F)
200435.6 C (96.1 F)
200537.8 C (100.0 F)
200640.6 C (105.1 F)
200738.3 C (100.9 F)
200833.3 C (91.9 F)
200933.9 C (93.0 F)
201036.7 C (98.1 F)
201136.1 C (97.0 F)
201238.3 C (100.9 F)
201335.0 C (95.0 F)
201433.9 C (93.0 F)
201535.0 C (95.0 F)
201636.1 C (97.0 F)
201735.6 C (96.1 F)
201835.6 C (96.1 F)
201934.4 C (93.9 F)
202036.7 C (98.1 F)
202137.8 C (100.0 F)
202237.8 C (100.0 F)
202336.1 C (97.0 F)
202437.8 C (100.0 F)
202534.4 C (93.9 F)
202638.9 C (102.0 F)

Coldest night (TNn)

Coldest night (TNn) at Nemo South Dakota by year The coldest night of the year at Nemo South Dakota, 1993 to 2026. The record is -39.4 C (-38.9 F) in 1996, marked on the chart; the median year is -30.8 C (-23.5 F). -40-35-30-25-20200020102020Record: -39.4 C (-38.9 F) in 1996
The coldest night of the year at Nemo South Dakota, 1993 to 2026. The record is -39.4 C (-38.9 F) in 1996, marked on the chart; the median year is -30.8 C (-23.5 F).
Coldest night (TNn) at Nemo South Dakota by year
YearColdest night (TNn)
1993-23.3 C (-9.9 F)
1994-33.9 C (-29.0 F)
1995-28.3 C (-18.9 F)
1996-39.4 C (-38.9 F)
1997-31.7 C (-25.1 F)
1998-33.3 C (-27.9 F)
1999-27.2 C (-17.0 F)
2000-25.0 C (-13.0 F)
2001-25.6 C (-14.1 F)
2002-25.6 C (-14.1 F)
2003-31.7 C (-25.1 F)
2004-27.8 C (-18.0 F)
2005-28.9 C (-20.0 F)
2006-36.1 C (-33.0 F)
2007-30.6 C (-23.1 F)
2008-31.1 C (-24.0 F)
2009-29.4 C (-20.9 F)
2010-31.7 C (-25.1 F)
2011-31.7 C (-25.1 F)
2012-27.2 C (-17.0 F)
2013-32.2 C (-26.0 F)
2014-32.8 C (-27.0 F)
2015-30.6 C (-23.1 F)
2016-32.2 C (-26.0 F)
2017-28.3 C (-18.9 F)
2018-29.4 C (-20.9 F)
2019-29.4 C (-20.9 F)
2020-28.3 C (-18.9 F)
2021-33.9 C (-29.0 F)
2022-31.1 C (-24.0 F)
2023-35.6 C (-32.1 F)
2024-36.1 C (-33.0 F)
2025-33.9 C (-29.0 F)
2026-28.3 C (-18.9 F)

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.

Frost Dates and Growing Season

30 years with a frost

Across 30 years with a frost, the median last spring frost at Nemo South Dakota falls on 6 June and the median first autumn frost on 9 September, which leaves a median of 94 days between them.

Fitted over all years, the growing season changes by +9.0 days per decade at this station.

Frost dates and growing season at Nemo South Dakota
MeasureMedian, all yearsEarliest periodRecent period (1995 to 2025)Recent against earliestFitted trend
Last spring frost6 Junen/a6 Junen/a-2.7 days per decade
First autumn frost9 Septembern/a9 Septembern/a+6.3 days per decade
Growing days94 daysn/a94 daysn/a+9.0 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Download the Data

  • Data for Nemo South Dakota standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Nemo South Dakota 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 . Last revised (2026-10-13).