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Built 2026-10-19 (19 October 2026)

Spearfish 9 WNW Threshold Days by Year (USC00397877)

6 fixed thresholds counted per year at Spearfish 9 WNW (USC00397877): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Spearfish 9 WNW Thresholds

  • Spearfish 9 WNW: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1922 with 25.
  • Spearfish 9 WNW: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1922 with 7.
  • Spearfish 9 WNW: days with 10 cm (3.9 in) or more of snowfall in 32 years, most in 1919 with 16.
  • Spearfish 9 WNW: days with 50 mm (1.97 in) or more of precipitation in 18 years, most in 1922 with 2.
  • 6 fixed thresholds have at least one qualifying day at Spearfish 9 WNW.
49 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Spearfish 9 WNW Days per year at Spearfish 9 WNW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1922. 01020301910: 101911: 91912: 161913: 91914: 111915: 201916: 161917: 61918: 211919: 151920: 211921: 141922: 251923: 241924: 101925: 91926: 171927: 241928: 141929: 221930: 91931: 141932: 161933: 111934: 81935: 131936: 91937: 181938: 111939: 121940: 111941: 251942: 201943: 71944: 151949: 121950: 161952: 71953: 101954: 91955: 111956: 111957: 121958: 91959: 71960: 81961: 81962: 201963: 171910191519201925193019351940194919551960
Days per year at Spearfish 9 WNW with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1922.
Days with 10 mm (0.39 in) or more of precipitation per year at Spearfish 9 WNW
YearDaysDecade average
19101013.3
1911913.3
19121613.3
1913913.3
19141113.3
19152013.3
19161613.3
1917613.3
19182113.3
19191513.3
19202118
19211418
19222518
19232418
19241018
1925918
19261718
19272418
19281418
19292218
1930912.1
19311412.1
19321612.1
19331112.1
1934812.1
19351312.1
1936912.1
19371812.1
19381112.1
19391212.1
19401115
19412515
19422015
1943715
19441515
19491215
19501610.2
1952710.2
19531010.2
1954910.2
19551110.2
19561110.2
19571210.2
1958910.2
1959710.2
1960813.3
1961813.3
19622013.3
19631713.3
First to last qualifying date each year at Spearfish 9 WNW For each year, a bar from the first to the last day at Spearfish 9 WNW meeting 10 mm (0.39 in). 1910: 29 March 1910 to 26 October 19101911: 26 March 1911 to 21 December 19111912: 13 April 1912 to 5 October 19121913: 3 January 1913 to 25 October 19131914: 17 April 1914 to 22 October 19141915: 4 February 1915 to 29 December 19151916: 29 March 1916 to 19 December 19161917: 16 March 1917 to 6 August 19171918: 14 February 1918 to 21 December 19181919: 6 April 1919 to 31 December 19191920: 14 February 1920 to 5 December 19201921: 24 January 1921 to 16 December 19211922: 2 January 1922 to 30 December 19221923: 31 January 1923 to 23 October 19231924: 17 January 1924 to 6 November 19241925: 15 May 1925 to 27 October 19251926: 4 January 1926 to 7 November 19261927: 17 January 1927 to 3 December 19271928: 26 March 1928 to 20 October 19281929: 5 February 1929 to 11 November 19291930: 6 March 1930 to 2 October 19301931: 17 January 1931 to 30 December 19311932: 6 January 1932 to 19 October 19321933: 4 March 1933 to 9 September 19331934: 4 January 1934 to 24 November 19341935: 4 March 1935 to 14 December 19351936: 30 April 1936 to 20 October 19361937: 24 March 1937 to 13 December 19371938: 3 May 1938 to 13 September 19381939: 1 February 1939 to 4 October 19391940: 6 March 1940 to 4 November 19401941: 6 April 1941 to 25 December 19411942: 18 April 1942 to 23 November 19421943: 15 March 1943 to 26 December 19431944: 27 January 1944 to 14 November 19441949: 4 January 1949 to 8 October 19491950: 18 March 1950 to 7 November 19501952: 15 May 1952 to 13 July 19521953: 9 February 1953 to 18 November 19531954: 12 March 1954 to 26 October 19541955: 4 April 1955 to 23 October 19551956: 3 May 1956 to 14 November 19561957: 14 May 1957 to 15 November 19571958: 1 April 1958 to 31 July 19581959: 4 May 1959 to 25 September 19591960: 5 May 1960 to 22 September 19601961: 11 April 1961 to 12 September 19611962: 26 April 1962 to 7 October 19621963: 10 April 1963 to 31 October 19631910191719241931193819491957JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Spearfish 9 WNW meeting 10 mm (0.39 in).
First to last qualifying date each year at Spearfish 9 WNW
YearFirst dateLast date
19101910-03-291910-10-26
19111911-03-261911-12-21
19121912-04-131912-10-05
19131913-01-031913-10-25
19141914-04-171914-10-22
19151915-02-041915-12-29
19161916-03-291916-12-19
19171917-03-161917-08-06
19181918-02-141918-12-21
19191919-04-061919-12-31
19201920-02-141920-12-05
19211921-01-241921-12-16
19221922-01-021922-12-30
19231923-01-311923-10-23
19241924-01-171924-11-06
19251925-05-151925-10-27
19261926-01-041926-11-07
19271927-01-171927-12-03
19281928-03-261928-10-20
19291929-02-051929-11-11
19301930-03-061930-10-02
19311931-01-171931-12-30
19321932-01-061932-10-19
19331933-03-041933-09-09
19341934-01-041934-11-24
19351935-03-041935-12-14
19361936-04-301936-10-20
19371937-03-241937-12-13
19381938-05-031938-09-13
19391939-02-011939-10-04
19401940-03-061940-11-04
19411941-04-061941-12-25
19421942-04-181942-11-23
19431943-03-151943-12-26
19441944-01-271944-11-14
19491949-01-041949-10-08
19501950-03-181950-11-07
19521952-05-151952-07-13
19531953-02-091953-11-18
19541954-03-121954-10-26
19551955-04-041955-10-23
19561956-05-031956-11-14
19571957-05-141957-11-15
19581958-04-011958-07-31
19591959-05-041959-09-25
19601960-05-051960-09-22
19611961-04-111961-09-12
19621962-04-261962-10-07
19631963-04-101963-10-31

Every Fixed Threshold

Fixed thresholds at Spearfish 9 WNW
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4925192217
25 mm (0.98 in): Days with 25 mm or more rain43719222
50 mm (1.97 in): Days with 50 mm or more rain18219221
10 cm (3.9 in): Days with 10 cm or more snowfall321619192
25 cm (9.8 in): Days with 25 cm or more snowfall14419181
50 cm (19.7 in): Days with 50 cm or more snowfall1119491

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

  • Data for Spearfish 9 WNW 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).