Daily records
Page built 2026-10-17
Data as of 2026-10-16
Search
Built 2026-10-17 (17 October 2026)

Mt Rushmore Nmem Weather Records (USC00395870)

Record envelope, standing records and threshold days for Mt Rushmore Nmem (USC00395870), South Dakota, United States, with 65 years of record.

Key Facts for Mt Rushmore Nmem

  • Mt Rushmore Nmem (USC00395870) is a weather station in South Dakota, United States at 43.88 latitude and -103.46 longitude, 1,619 m (5,311 ft) above sea level.
  • The station reports from 1962 to 2026, 65 years of record.
  • 1,464 records set at Mt Rushmore Nmem still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Mt Rushmore Nmem tied a daily record high maximum temperature of 27.2 C (81.0 F) on 9 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, 43.88 latitude, -103.46 longitude.
  • Elevation: 1,619 m (5,311 ft).
  • Period of record: 1962 to 2026, 65 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Mt Rushmore Nmem, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mt Rushmore Nmem. The lines show the 2026 daily maximum and minimum. 13 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 Mt Rushmore Nmem. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mt Rushmore Nmem, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan21.1 C (70.0 F)-38.9 C (-38.0 F)11.7 C (53.1 F)-25.0 C (-13.0 F)
Feb20.0 C (68.0 F)-33.9 C (-29.0 F)15.0 C (59.0 F)-17.2 C (1.0 F)
Mar26.7 C (80.1 F)-26.7 C (-16.1 F)26.7 C (80.1 F)-12.8 C (9.0 F)
Apr29.4 C (84.9 F)-19.4 C (-2.9 F)26.7 C (80.1 F)-6.7 C (19.9 F)
May33.9 C (93.0 F)-10.0 C (14.0 F)28.3 C (82.9 F)-5.0 C (23.0 F)
Jun37.2 C (99.0 F)-2.8 C (27.0 F)31.7 C (89.1 F)6.1 C (43.0 F)
Jul37.8 C (100.0 F)4.4 C (39.9 F)37.8 C (100.0 F)13.3 C (55.9 F)
Aug37.2 C (99.0 F)0.6 C (33.1 F)35.6 C (96.1 F)7.8 C (46.0 F)
Sep36.1 C (97.0 F)-7.2 C (19.0 F)30.6 C (87.1 F)7.2 C (45.0 F)
Oct30.0 C (86.0 F)-20.0 C (-4.0 F)27.8 C (82.0 F)0.6 C (33.1 F)
Nov23.9 C (75.0 F)-24.4 C (-11.9 F)n/an/a
Dec20.0 C (68.0 F)-35.0 C (-31.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mt Rushmore Nmem by the year they were set 1,464 records at Mt Rushmore Nmem still stand. 1985 holds the most, with 48. 02040601962: 231963: 301964: 181965: 361966: 231967: 201968: 251969: 241970: 171971: 91972: 321973: 221974: 211975: 231976: 221977: 121978: 281979: 261980: 251981: 181982: 111983: 271984: 331985: 481986: 271987: 351988: 291989: 401990: 271991: 261992: 471993: 261994: 191995: 261996: 221997: 261998: 171999: 232000: 292001: 182002: 132003: 302004: 122005: 202006: 192007: 152008: 132009: 262010: 122011: 142012: 212013: 162014: 262015: 152016: 152017: 232018: 132019: 182020: 312021: 172022: 172023: 132024: 192025: 192026: 171962196919761983199019972004201120182025
1,464 records at Mt Rushmore Nmem still stand. 1985 holds the most, with 48.
Standing records at Mt Rushmore Nmem by the year they were set
Year setStanding records
196223
196330
196418
196536
196623
196720
196825
196924
197017
19719
197232
197322
197421
197523
197622
197712
197828
197926
198025
198118
198211
198327
198433
198548
198627
198735
198829
198940
199027
199126
199247
199326
199419
199526
199622
199726
199817
199923
200029
200118
200213
200330
200412
200520
200619
200715
200813
200926
201012
201114
201221
201316
201426
201515
201615
201723
201813
201918
202031
202117
202217
202313
202419
202519
202617

All-Time Record Progression

2 new records
When Mt Rushmore Nmem set new all-time records 2 all-time records were set at Mt Rushmore Nmem between 19 April 2000 and 19 April 2000. Each dot is a new record. Record daily snowfallRecord snow depth19 April 2000: Record daily snowfall 76.2 cm (30.0 in)19 April 2000: Record snow depth 76.2 cm (30.0 in)2000
2 all-time records were set at Mt Rushmore Nmem between 19 April 2000 and 19 April 2000. Each dot is a new record.
When Mt Rushmore Nmem set new all-time records
DateKindDetail
2000-04-19Record daily snowfallRecord daily snowfall 76.2 cm (30.0 in)
2000-04-19Record snow depthRecord snow depth 76.2 cm (30.0 in)

Wettest Day of Each Month

Jun: 160.0 mm (6.3 in)
Record daily precipitation for each month at Mt Rushmore Nmem The wettest day on record for each calendar month at Mt Rushmore Nmem. The most was 160.0 mm (6.3 in) on 10 June 1972. 050100150200 Jan: 15.2 mm (0.6 in), 30 January 1971 Jan Feb: 24.1 mm (0.9 in), 29 February 2004 Feb Mar: 44.2 mm (1.7 in), 16 March 1963 Mar Apr: 58.4 mm (2.3 in), 19 April 2000 Apr May: 85.9 mm (3.4 in), 8 May 1995 May Jun: 160.0 mm (6.3 in), 10 June 1972 Jun Jul: 64.0 mm (2.5 in), 24 July 1977 Jul Aug: 57.4 mm (2.3 in), 29 August 1996 Aug Sep: 53.3 mm (2.1 in), 1 September 1963 Sep Oct: 66.8 mm (2.6 in), 12 October 2023 Oct Nov: 28.2 mm (1.1 in), 1 November 2000 Nov Dec: 16.5 mm (0.6 in), 25 December 2016 Dec
The wettest day on record for each calendar month at Mt Rushmore Nmem. The most was 160.0 mm (6.3 in) on 10 June 1972.
Record daily precipitation for each month at Mt Rushmore Nmem
MonthRecord daily precipitation (mm)Date
Jan15.2 mm (0.6 in)30 January 1971
Feb24.1 mm (0.9 in)29 February 2004
Mar44.2 mm (1.7 in)16 March 1963
Apr58.4 mm (2.3 in)19 April 2000
May85.9 mm (3.4 in)8 May 1995
Jun160.0 mm (6.3 in)10 June 1972
Jul64.0 mm (2.5 in)24 July 1977
Aug57.4 mm (2.3 in)29 August 1996
Sep53.3 mm (2.1 in)1 September 1963
Oct66.8 mm (2.6 in)12 October 2023
Nov28.2 mm (1.1 in)1 November 2000
Dec16.5 mm (0.6 in)25 December 2016

Period of Record Coverage

1962 to 2026
Days with data per year at Mt Rushmore Nmem 65 years of record at Mt Rushmore Nmem, 1962 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2008, 2026. 1962: 331 of 365 days1963: 359 of 365 days1964: 365 of 366 days1965: 365 of 365 days1966: 364 of 365 days1967: 364 of 365 days1968: 365 of 366 days1969: 364 of 365 days1970: 363 of 365 days1971: 353 of 365 days1972: 365 of 366 days1973: 357 of 365 days1974: 362 of 365 days1975: 334 of 365 days1976: 359 of 366 days1977: 364 of 365 days1978: 362 of 365 days1979: 362 of 365 days1980: 364 of 366 days1981: 363 of 365 days1982: 359 of 365 days1983: 365 of 365 days1984: 359 of 366 days1985: 363 of 365 days1986: 359 of 365 days1987: 358 of 365 days1988: 351 of 366 days1989: 355 of 365 days1990: 351 of 365 days1991: 353 of 365 days1992: 361 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 364 of 365 days1996: 357 of 366 days1997: 358 of 365 days1998: 364 of 365 days1999: 362 of 365 days2000: 360 of 366 days2001: 361 of 365 days2002: 333 of 365 days2003: 363 of 365 days2004: 362 of 366 days2005: 363 of 365 days2006: 363 of 365 days2007: 364 of 365 days2008: 304 of 366 days2009: 361 of 365 days2010: 364 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 360 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 365 of 366 days2017: 365 of 365 days2018: 364 of 365 days2019: 364 of 365 days2020: 359 of 366 days2021: 360 of 365 days2022: 358 of 365 days2023: 363 of 365 days2024: 366 of 366 days2025: 365 of 365 days2026: 285 of 365 days197019801990200020102020
65 years of record at Mt Rushmore Nmem, 1962 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 2008, 2026.
Days with data per year at Mt Rushmore Nmem
YearDays with dataShare of yearComplete
196233191%Yes
196335998%Yes
1964365100%Yes
1965365100%Yes
1966364100%Yes
1967364100%Yes
1968365100%Yes
1969364100%Yes
197036399%Yes
197135397%Yes
1972365100%Yes
197335798%Yes
197436299%Yes
197533492%Yes
197635998%Yes
1977364100%Yes
197836299%Yes
197936299%Yes
198036499%Yes
198136399%Yes
198235998%Yes
1983365100%Yes
198435998%Yes
198536399%Yes
198635998%Yes
198735898%Yes
198835196%Yes
198935597%Yes
199035196%Yes
199135397%Yes
199236199%Yes
1993365100%Yes
1994365100%Yes
1995364100%Yes
199635798%Yes
199735898%Yes
1998364100%Yes
199936299%Yes
200036098%Yes
200136199%Yes
200233391%Yes
200336399%Yes
200436299%Yes
200536399%Yes
200636399%Yes
2007364100%Yes
200830483%No
200936199%Yes
2010364100%Yes
2011365100%Yes
2012366100%Yes
201336099%Yes
2014365100%Yes
2015365100%Yes
2016365100%Yes
2017365100%Yes
2018364100%Yes
2019364100%Yes
202035998%Yes
202136099%Yes
202235898%Yes
202336399%Yes
2024366100%Yes
2025365100%Yes
202628578%No

Latest Records

20
Latest records at Mt Rushmore Nmem
DateStationRecordValueBeat old record byOld record stoodSignificance
9 October 2026Mt Rushmore Nmem, USdaily high max (Tie, Provisional)27.2 C (81.0 F)tie63 years6 of 100 (Routine)
5 October 2026Mt Rushmore Nmem, USdaily high max (Tie, Provisional)27.8 C (82.0 F)tie63 years6 of 100 (Routine)
20 September 2026Mt Rushmore Nmem, USdaily rain (Provisional)37.8 mm (1.5 in)13.4 mm (0.5 in)7 years25 of 100 (Routine)
5 August 2026Mt Rushmore Nmem, USdaily low min (Tie)7.8 C (46.0 F)tie33 years4 of 100 (Routine)
2 August 2026Mt Rushmore Nmem, USdaily high min23.9 C (75.0 F)1.1 C (2.0 F)44 years21 of 100 (Routine)
2 August 2026Mt Rushmore Nmem, USdaily high max35.6 C (96.1 F)2.8 C (5.0 F)1 year12 of 100 (Routine)
26 July 2026Mt Rushmore Nmem, USdaily high max (Tie)34.4 C (93.9 F)tie39 years4 of 100 (Routine)
25 July 2026Mt Rushmore Nmem, USall-time high max (Tie)37.8 C (100.0 F)tie52 years10 of 100 (Routine)
26 May 2026Mt Rushmore Nmem, USdaily high min17.2 C (63.0 F)1.1 C (2.0 F)20 years14 of 100 (Routine)
21 May 2026Mt Rushmore Nmem, USdaily low min-5.0 C (23.0 F)1.7 C (3.1 F)63 years27 of 100 (Routine)
20 May 2026Mt Rushmore Nmem, USdaily low min-5.0 C (23.0 F)0.6 C (1.1 F)63 years25 of 100 (Routine)
6 May 2026Mt Rushmore Nmem, USdaily low min-4.4 C (24.1 F)2.2 C (4.0 F)16 years14 of 100 (Routine)
5 May 2026Mt Rushmore Nmem, USdaily snowfall0.3 cm (0.1 in)0.3 cm (0.1 in)64 years20 of 100 (Routine)
25 April 2026Mt Rushmore Nmem, USdaily low max0.6 C (33.1 F)0.5 C (0.9 F)59 years23 of 100 (Routine)
24 April 2026Mt Rushmore Nmem, USdaily snowfall14.5 cm (5.7 in)5.6 cm (2.2 in)20 years17 of 100 (Routine)
24 April 2026Mt Rushmore Nmem, USdaily low max-1.1 C (30.0 F)1.7 C (3.1 F)20 years14 of 100 (Routine)
25 March 2026Mt Rushmore Nmem, USdaily high max24.4 C (75.9 F)3.8 C (6.8 F)40 years23 of 100 (Routine)
21 March 2026Mt Rushmore Nmem, USmonthly high max26.7 C (80.1 F)1.1 C (2.0 F)57 years34 of 100 (Routine)
20 March 2026Mt Rushmore Nmem, USdaily high max23.9 C (75.0 F)1.7 C (3.1 F)28 years16 of 100 (Routine)
20 March 2026Mt Rushmore Nmem, USdaily high min (Tie)12.8 C (55.0 F)tie28 years3 of 100 (Routine)

Climate Trend

60 complete years, 1963 to 2025
Annual mean temperature at Mt Rushmore Nmem as warming stripes, 1963 to 2025 One stripe for each of 60 complete years at Mt Rushmore Nmem, 1963 to 2025. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1993, at 5.8 C (42.4 F), and the warmest was 2012, at 9.6 C (49.2 F). The strongest colour marks a difference of 2.2 C (4.0 F). 1963: 8.9 C, +1.0 C from the station mean1964: 7.9 C, 0.0 C from the station mean1965: 7.3 C, -0.6 C from the station mean1966: 7.9 C, 0.0 C from the station mean1967: 7.7 C, -0.1 C from the station mean1968: 7.7 C, -0.2 C from the station mean1969: 8.2 C, +0.3 C from the station mean1970: 7.9 C, 0.0 C from the station mean1971: 7.1 C, -0.8 C from the station mean1972: 7.0 C, -0.8 C from the station mean1973: 8.3 C, +0.4 C from the station mean1974: 8.9 C, +1.1 C from the station mean1976: 8.6 C, +0.8 C from the station mean1977: 8.3 C, +0.5 C from the station mean1978: 6.9 C, -0.9 C from the station mean1979: 7.3 C, -0.6 C from the station mean1980: 8.3 C, +0.4 C from the station mean1981: 9.2 C, +1.3 C from the station mean1982: 6.7 C, -1.2 C from the station mean1983: 7.9 C, 0.0 C from the station mean1984: 7.7 C, -0.2 C from the station mean1985: 7.3 C, -0.6 C from the station mean1986: 8.7 C, +0.8 C from the station mean1987: 9.2 C, +1.3 C from the station mean1988: 9.1 C, +1.2 C from the station mean1989: 7.4 C, -0.5 C from the station mean1990: 8.4 C, +0.5 C from the station mean1991: 8.5 C, +0.6 C from the station mean1992: 7.7 C, -0.2 C from the station mean1993: 5.8 C, -2.1 C from the station mean1994: 7.8 C, 0.0 C from the station mean1995: 7.1 C, -0.8 C from the station mean1996: 5.9 C, -1.9 C from the station mean1997: 7.1 C, -0.8 C from the station mean1998: 7.7 C, -0.2 C from the station mean1999: 8.5 C, +0.6 C from the station mean2000: 8.0 C, +0.2 C from the station mean2001: 8.4 C, +0.5 C from the station mean2003: 7.9 C, 0.0 C from the station mean2004: 8.0 C, +0.1 C from the station mean2005: 8.3 C, +0.5 C from the station mean2006: 8.5 C, +0.6 C from the station mean2007: 8.3 C, +0.4 C from the station mean2009: 6.5 C, -1.3 C from the station mean2010: 7.8 C, -0.1 C from the station mean2011: 7.3 C, -0.6 C from the station mean2012: 9.6 C, +1.7 C from the station mean2013: 7.2 C, -0.7 C from the station mean2014: 6.9 C, -1.0 C from the station mean2015: 8.7 C, +0.8 C from the station mean2016: 9.2 C, +1.3 C from the station mean2017: 8.3 C, +0.4 C from the station mean2018: 7.2 C, -0.7 C from the station mean2019: 6.0 C, -1.9 C from the station mean2020: 8.3 C, +0.4 C from the station mean2021: 8.4 C, +0.5 C from the station mean2022: 7.5 C, -0.4 C from the station mean2023: 7.6 C, -0.3 C from the station mean2024: 8.9 C, +1.0 C from the station mean2025: 8.1 C, +0.2 C from the station mean1963197019801990200020102020
One stripe for each of 60 complete years at Mt Rushmore Nmem, 1963 to 2025. Blue stripes are years cooler than the station's own mean of 7.9 C (46.2 F); red stripes are warmer. The coolest year was 1993, at 5.8 C (42.4 F), and the warmest was 2012, at 9.6 C (49.2 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Mt Rushmore Nmem as warming stripes, 1963 to 2025
YearAnnual mean temperatureDifference from the station mean
19638.9 C+0.98 C
19647.9 C-0.01 C
19657.3 C-0.57 C
19667.9 C+0.04 C
19677.7 C-0.14 C
19687.7 C-0.17 C
19698.2 C+0.28 C
19707.9 C+0.00 C
19717.1 C-0.79 C
19727.0 C-0.83 C
19738.3 C+0.41 C
19748.9 C+1.06 C
19768.6 C+0.76 C
19778.3 C+0.46 C
19786.9 C-0.95 C
19797.3 C-0.59 C
19808.3 C+0.43 C
19819.2 C+1.29 C
19826.7 C-1.16 C
19837.9 C+0.04 C
19847.7 C-0.16 C
19857.3 C-0.57 C
19868.7 C+0.79 C
19879.2 C+1.30 C
19889.1 C+1.24 C
19897.4 C-0.47 C
19908.4 C+0.54 C
19918.5 C+0.64 C
19927.7 C-0.22 C
19935.8 C-2.12 C
19947.8 C-0.04 C
19957.1 C-0.79 C
19965.9 C-1.93 C
19977.1 C-0.79 C
19987.7 C-0.20 C
19998.5 C+0.63 C
20008.0 C+0.15 C
20018.4 C+0.48 C
20037.9 C-0.03 C
20048.0 C+0.08 C
20058.3 C+0.46 C
20068.5 C+0.57 C
20078.3 C+0.40 C
20096.5 C-1.34 C
20107.8 C-0.08 C
20117.3 C-0.58 C
20129.6 C+1.69 C
20137.2 C-0.71 C
20146.9 C-1.03 C
20158.7 C+0.81 C
20169.2 C+1.35 C
20178.3 C+0.38 C
20187.2 C-0.66 C
20196.0 C-1.91 C
20208.3 C+0.45 C
20218.4 C+0.48 C
20227.5 C-0.37 C
20237.6 C-0.29 C
20248.9 C+1.03 C
20258.1 C+0.23 C

The fitted trend in annual mean temperature here over 1963 to 2025 is 0.00 C (-0.12 to 0.11) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.01 F (-0.22 to 0.20) per decade. The slope is a straight line fitted to 60 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Mt Rushmore Nmem
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.00 C (-0.12 to 0.11) per decade-0.01 F (-0.22 to 0.20) per decade1963 to 202560Not clearly different from zero
Mean daily maximum-0.16 C (-0.29 to -0.02) per decade-0.28 F (-0.52 to -0.04) per decade1963 to 202560Fall
Mean daily minimum0.14 C (0.03 to 0.26) per decade0.3 F (0.1 to 0.5) per decade1963 to 202560Rise

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

1962 to 2026
Yearly extremes at Mt Rushmore Nmem: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)37.8 C (100.0 F)197435.0 C (95.0 F)65
Coldest night (TNn)-38.9 C (-38.0 F)1963-26.1 C (-15.0 F)65
Wettest day (Rx1day)160.0 mm (6.3 in)197244.5 mm (1.8 in)65
Wettest five days (Rx5day)170.9 mm (6.7 in)197271.9 mm (2.8 in)65
Longest dry spell (CDD)65 days198730 days65

Hottest day (TXx)

Hottest day (TXx) at Mt Rushmore Nmem by year The hottest day of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 37.8 C (100.0 F) in 1974, marked on the chart; the median year is 35.0 C (95.0 F). 3032343638198020002020Record: 37.8 C (100.0 F) in 1974
The hottest day of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 37.8 C (100.0 F) in 1974, marked on the chart; the median year is 35.0 C (95.0 F).
Hottest day (TXx) at Mt Rushmore Nmem by year
YearHottest day (TXx)
196232.2 C (90.0 F)
196335.6 C (96.1 F)
196435.6 C (96.1 F)
196533.9 C (93.0 F)
196635.6 C (96.1 F)
196735.6 C (96.1 F)
196834.4 C (93.9 F)
196936.7 C (98.1 F)
197037.2 C (99.0 F)
197136.7 C (98.1 F)
197234.4 C (93.9 F)
197337.2 C (99.0 F)
197437.8 C (100.0 F)
197535.6 C (96.1 F)
197634.4 C (93.9 F)
197736.1 C (97.0 F)
197836.1 C (97.0 F)
197934.4 C (93.9 F)
198036.1 C (97.0 F)
198137.2 C (99.0 F)
198235.6 C (96.1 F)
198337.8 C (100.0 F)
198432.8 C (91.0 F)
198537.8 C (100.0 F)
198635.6 C (96.1 F)
198735.0 C (95.0 F)
198836.7 C (98.1 F)
198937.2 C (99.0 F)
199037.2 C (99.0 F)
199134.4 C (93.9 F)
199232.8 C (91.0 F)
199331.1 C (88.0 F)
199433.9 C (93.0 F)
199534.4 C (93.9 F)
199632.2 C (90.0 F)
199732.8 C (91.0 F)
199834.4 C (93.9 F)
199935.0 C (95.0 F)
200036.1 C (97.0 F)
200134.4 C (93.9 F)
200236.7 C (98.1 F)
200336.1 C (97.0 F)
200433.3 C (91.9 F)
200536.1 C (97.0 F)
200637.8 C (100.0 F)
200736.7 C (98.1 F)
200831.7 C (89.1 F)
200931.7 C (89.1 F)
201035.0 C (95.0 F)
201135.0 C (95.0 F)
201236.7 C (98.1 F)
201333.9 C (93.0 F)
201433.9 C (93.0 F)
201533.3 C (91.9 F)
201634.4 C (93.9 F)
201735.0 C (95.0 F)
201835.0 C (95.0 F)
201933.9 C (93.0 F)
202035.0 C (95.0 F)
202135.6 C (96.1 F)
202236.1 C (97.0 F)
202333.9 C (93.0 F)
202436.1 C (97.0 F)
202533.9 C (93.0 F)
202637.8 C (100.0 F)

Coldest night (TNn)

Coldest night (TNn) at Mt Rushmore Nmem by year The coldest night of the year at Mt Rushmore Nmem, 1962 to 2026. The record is -38.9 C (-38.0 F) in 1963, marked on the chart; the median year is -26.1 C (-15.0 F). -40-30-20-10198020002020Record: -38.9 C (-38.0 F) in 1963
The coldest night of the year at Mt Rushmore Nmem, 1962 to 2026. The record is -38.9 C (-38.0 F) in 1963, marked on the chart; the median year is -26.1 C (-15.0 F).
Coldest night (TNn) at Mt Rushmore Nmem by year
YearColdest night (TNn)
1962-26.1 C (-15.0 F)
1963-38.9 C (-38.0 F)
1964-31.1 C (-24.0 F)
1965-25.0 C (-13.0 F)
1966-26.1 C (-15.0 F)
1967-26.1 C (-15.0 F)
1968-31.7 C (-25.1 F)
1969-25.6 C (-14.1 F)
1970-25.6 C (-14.1 F)
1971-25.6 C (-14.1 F)
1972-30.6 C (-23.1 F)
1973-26.1 C (-15.0 F)
1974-27.2 C (-17.0 F)
1975-24.4 C (-11.9 F)
1976-26.7 C (-16.1 F)
1977-27.2 C (-17.0 F)
1978-27.2 C (-17.0 F)
1979-28.9 C (-20.0 F)
1980-27.8 C (-18.0 F)
1981-27.8 C (-18.0 F)
1982-28.3 C (-18.9 F)
1983-35.0 C (-31.0 F)
1984-26.1 C (-15.0 F)
1985-26.1 C (-15.0 F)
1986-22.8 C (-9.0 F)
1987-17.8 C (0.0 F)
1988-24.4 C (-11.9 F)
1989-33.9 C (-29.0 F)
1990-32.8 C (-27.0 F)
1991-23.3 C (-9.9 F)
1992-25.6 C (-14.1 F)
1993-26.1 C (-15.0 F)
1994-27.2 C (-17.0 F)
1995-22.2 C (-8.0 F)
1996-29.4 C (-20.9 F)
1997-25.6 C (-14.1 F)
1998-27.2 C (-17.0 F)
1999-19.4 C (-2.9 F)
2000-21.7 C (-7.1 F)
2001-19.4 C (-2.9 F)
2002-21.1 C (-6.0 F)
2003-27.2 C (-17.0 F)
2004-26.7 C (-16.1 F)
2005-25.0 C (-13.0 F)
2006-28.9 C (-20.0 F)
2007-25.6 C (-14.1 F)
2008-27.8 C (-18.0 F)
2009-23.3 C (-9.9 F)
2010-23.3 C (-9.9 F)
2011-27.2 C (-17.0 F)
2012-23.9 C (-11.0 F)
2013-27.8 C (-18.0 F)
2014-26.7 C (-16.1 F)
2015-20.6 C (-5.1 F)
2016-25.6 C (-14.1 F)
2017-26.1 C (-15.0 F)
2018-23.9 C (-11.0 F)
2019-25.0 C (-13.0 F)
2020-20.6 C (-5.1 F)
2021-28.9 C (-20.0 F)
2022-30.0 C (-22.0 F)
2023-25.6 C (-14.1 F)
2024-31.7 C (-25.1 F)
2025-27.2 C (-17.0 F)
2026-25.0 C (-13.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mt Rushmore Nmem by year The wettest day of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 160.0 mm (6.3 in) in 1972, marked on the chart; the median year is 44.5 mm (1.8 in). 050100150200198020002020Record: 160.0 mm (6.3 in) in 1972
The wettest day of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 160.0 mm (6.3 in) in 1972, marked on the chart; the median year is 44.5 mm (1.8 in).
Wettest day (Rx1day) at Mt Rushmore Nmem by year
YearWettest day (Rx1day)
196264.0 mm (2.5 in)
196355.9 mm (2.2 in)
196436.1 mm (1.4 in)
196568.8 mm (2.7 in)
196643.7 mm (1.7 in)
196733.0 mm (1.3 in)
196841.4 mm (1.6 in)
196953.8 mm (2.1 in)
197068.6 mm (2.7 in)
197144.5 mm (1.8 in)
1972160.0 mm (6.3 in)
197344.5 mm (1.8 in)
197441.1 mm (1.6 in)
197536.8 mm (1.4 in)
197649.8 mm (2.0 in)
197764.0 mm (2.5 in)
197837.3 mm (1.5 in)
197963.5 mm (2.5 in)
198046.5 mm (1.8 in)
198150.0 mm (2.0 in)
198224.1 mm (0.9 in)
198336.3 mm (1.4 in)
198433.5 mm (1.3 in)
198519.1 mm (0.8 in)
198642.4 mm (1.7 in)
198728.2 mm (1.1 in)
198835.6 mm (1.4 in)
198937.1 mm (1.5 in)
199039.4 mm (1.6 in)
199139.4 mm (1.6 in)
199227.4 mm (1.1 in)
199350.8 mm (2.0 in)
199445.5 mm (1.8 in)
199585.9 mm (3.4 in)
199657.4 mm (2.3 in)
199781.3 mm (3.2 in)
199843.4 mm (1.7 in)
199945.7 mm (1.8 in)
200058.4 mm (2.3 in)
200145.0 mm (1.8 in)
200231.8 mm (1.3 in)
200327.9 mm (1.1 in)
200427.2 mm (1.1 in)
200532.8 mm (1.3 in)
200647.8 mm (1.9 in)
200740.1 mm (1.6 in)
200827.9 mm (1.1 in)
200935.6 mm (1.4 in)
201049.0 mm (1.9 in)
201158.7 mm (2.3 in)
201235.3 mm (1.4 in)
201351.8 mm (2.0 in)
201451.8 mm (2.0 in)
201562.5 mm (2.5 in)
201677.5 mm (3.1 in)
201735.6 mm (1.4 in)
201857.2 mm (2.3 in)
201945.5 mm (1.8 in)
202034.0 mm (1.3 in)
202148.3 mm (1.9 in)
202237.3 mm (1.5 in)
202366.8 mm (2.6 in)
202441.1 mm (1.6 in)
202539.9 mm (1.6 in)
202646.5 mm (1.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mt Rushmore Nmem by year The wettest five days of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 170.9 mm (6.7 in) in 1972, marked on the chart; the median year is 71.9 mm (2.8 in). 050100150200198020002020Record: 170.9 mm (6.7 in) in 1972
The wettest five days of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 170.9 mm (6.7 in) in 1972, marked on the chart; the median year is 71.9 mm (2.8 in).
Wettest five days (Rx5day) at Mt Rushmore Nmem by year
YearWettest five days (Rx5day)
1962131.3 mm (5.2 in)
1963109.2 mm (4.3 in)
196478.0 mm (3.1 in)
196587.5 mm (3.4 in)
196663.0 mm (2.5 in)
196785.9 mm (3.4 in)
196868.0 mm (2.7 in)
1969132.1 mm (5.2 in)
197085.6 mm (3.4 in)
197189.6 mm (3.5 in)
1972170.9 mm (6.7 in)
197368.9 mm (2.7 in)
197457.1 mm (2.2 in)
197563.3 mm (2.5 in)
197674.5 mm (2.9 in)
197796.5 mm (3.8 in)
197873.1 mm (2.9 in)
197971.9 mm (2.8 in)
198049.5 mm (1.9 in)
198183.3 mm (3.3 in)
198254.8 mm (2.2 in)
198340.6 mm (1.6 in)
198472.3 mm (2.8 in)
198538.6 mm (1.5 in)
198665.8 mm (2.6 in)
198747.0 mm (1.9 in)
198867.1 mm (2.6 in)
198977.7 mm (3.1 in)
199066.8 mm (2.6 in)
199169.1 mm (2.7 in)
199248.4 mm (1.9 in)
1993107.7 mm (4.2 in)
199469.9 mm (2.8 in)
1995133.9 mm (5.3 in)
1996131.1 mm (5.2 in)
1997114.8 mm (4.5 in)
199867.1 mm (2.6 in)
1999111.9 mm (4.4 in)
200082.5 mm (3.2 in)
200195.2 mm (3.7 in)
200257.4 mm (2.3 in)
200352.6 mm (2.1 in)
200448.0 mm (1.9 in)
200562.3 mm (2.5 in)
200673.0 mm (2.9 in)
200748.4 mm (1.9 in)
200849.0 mm (1.9 in)
200948.7 mm (1.9 in)
201078.5 mm (3.1 in)
2011106.7 mm (4.2 in)
201266.6 mm (2.6 in)
201379.2 mm (3.1 in)
2014112.4 mm (4.4 in)
201590.2 mm (3.6 in)
201688.4 mm (3.5 in)
201759.5 mm (2.3 in)
2018115.3 mm (4.5 in)
201996.0 mm (3.8 in)
202040.3 mm (1.6 in)
202169.5 mm (2.7 in)
202245.7 mm (1.8 in)
202371.9 mm (2.8 in)
202446.9 mm (1.8 in)
202566.1 mm (2.6 in)
202682.0 mm (3.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mt Rushmore Nmem by year The longest dry spell of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 65 days in 1987, marked on the chart; the median year is 30 days. 020406080198020002020Record: 65 days in 1987
The longest dry spell of the year at Mt Rushmore Nmem, 1962 to 2026. The record is 65 days in 1987, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at Mt Rushmore Nmem by year
YearLongest dry spell (CDD)
196243 days
196329 days
196439 days
196536 days
196634 days
196735 days
196829 days
196938 days
197028 days
197117 days
197225 days
197329 days
197424 days
197542 days
197650 days
197738 days
197824 days
197928 days
198030 days
198139 days
198218 days
198333 days
198433 days
198531 days
198631 days
198765 days
198840 days
198923 days
199037 days
199133 days
199246 days
199325 days
199422 days
199526 days
199624 days
199755 days
199852 days
199945 days
200028 days
200130 days
200227 days
200327 days
200433 days
200521 days
200644 days
200730 days
200820 days
200923 days
201028 days
201118 days
201228 days
201322 days
201428 days
201535 days
201628 days
201717 days
201828 days
201913 days
202032 days
202150 days
202252 days
202330 days
202429 days
202529 days
202649 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.

Frost Dates and Growing Season

60 years with a frost

Across 60 years with a frost, the median last spring frost at Mt Rushmore Nmem falls on 16 May and the median first autumn frost on 29 September, which leaves a median of 136 days between them.

In 1994 to 2025 the median growing season was 140 days. That is 8 days more than in 1963 to 1993.

Fitted over all years, the growing season changes by +2.4 days per decade at this station.

Frost dates and growing season at Mt Rushmore Nmem
MeasureMedian, all yearsEarliest period (1963 to 1993)Recent period (1994 to 2025)Recent against earliestFitted trend
Last spring frost16 May14 May18 May4 days later-0.2 days per decade
First autumn frost29 September23 September4 October11 days later+2.1 days per decade
Growing days136 days132 days140 days8 days more+2.4 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.

Rainfall Return Levels

62 years, 1962 to 2025

A day with at least 43.6 mm (1.7 in) of rain is expected about once in 2 years. A day with at least 116.9 mm (4.6 in) of rain is expected about once in 100 years.

Rainfall return levels at Mt Rushmore Nmem: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years43.6 mm (1.7 in)
5 years58.8 mm (2.3 in)
10 years70.4 mm (2.8 in)
25 years87.1 mm (3.4 in)
50 years101.3 mm (4.0 in)
100 years116.9 mm (4.6 in)Longer than the 62 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, 62 years of values from 1962 to 2025.

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: 160.0 mm (6.3 in) in 1972; 85.9 mm (3.4 in) in 1995; 81.3 mm (3.2 in) in 1997.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Climate Twins

2011 to 2025 against 1961 to 1990

Over 2011 to 2025, Mt Rushmore Nmem had a mean temperature of 7.9 C (46.3 F) and 609.0 mm (24.0 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Eureka (United States, 838 km away), Sybille Rsch Unit (United States, 282 km away) and Mtn Dell Dam (United States, 763 km away).

Climate twins of Mt Rushmore Nmem: stations whose 1961 to 1990 climate is closest to its 2011 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
EurekaUnited States838 km (521 mi)8.0 C (46.5 F)474.0 mm (18.7 in)1.31
Sybille Rsch UnitUnited States282 km (175 mi)7.8 C (46.0 F)406.3 mm (16.0 in)1.41
Mtn Dell DamUnited States763 km (474 mi)8.1 C (46.7 F)612.7 mm (24.1 in)1.43

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Mt Rushmore Nmem standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Mt Rushmore Nmem 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-16).