Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Sloan Threshold Days by Year (USC00418382)

7 fixed thresholds counted per year at Sloan (USC00418382): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Sloan Thresholds

  • Sloan: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1941 with 31.
  • Sloan: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1971 with 16.
  • Sloan: days with 50 mm (1.97 in) or more of precipitation in 28 years, most in 1938 with 6.
  • Sloan: days with 10 cm (3.9 in) or more of snowfall in 6 years, most in 1946 with 2.
  • 7 fixed thresholds have at least one qualifying day at Sloan.
38 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Sloan Days per year at Sloan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1941. 0102030401936: 251937: 211938: 261939: 221940: 321941: 311942: 181943: 181944: 281945: 281946: 171947: 171949: 281950: 201951: 101952: 201953: 151954: 91955: 281956: 141957: 281958: 241959: 251960: 211961: 181962: 201963: 171964: 281965: 231966: 161967: 231968: 281969: 291970: 191971: 311972: 201973: 251974: 241936194019441949195319571961196519691973
Days per year at Sloan with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1941.
Days with 10 mm (0.39 in) or more of precipitation per year at Sloan
YearDaysDecade average
19362523.5
19372123.5
19382623.5
19392223.5
19403224.1
19413124.1
19421824.1
19431824.1
19442824.1
19452824.1
19461724.1
19471724.1
19492824.1
19502019.3
19511019.3
19522019.3
19531519.3
1954919.3
19552819.3
19561419.3
19572819.3
19582419.3
19592519.3
19602122.3
19611822.3
19622022.3
19631722.3
19642822.3
19652322.3
19661622.3
19672322.3
19682822.3
19692922.3
19701923.8
19713123.8
19722023.8
19732523.8
19742423.8
First to last qualifying date each year at Sloan For each year, a bar from the first to the last day at Sloan meeting 10 mm (0.39 in). 1936: 26 February 1936 to 1 December 19361937: 4 March 1937 to 28 December 19371938: 5 January 1938 to 24 December 19381939: 8 January 1939 to 25 December 19391940: 3 February 1940 to 26 December 19401941: 31 January 1941 to 12 December 19411942: 1 March 1942 to 21 December 19421943: 24 March 1943 to 24 December 19431944: 1 January 1944 to 28 December 19441945: 17 January 1945 to 3 December 19451946: 4 January 1946 to 3 November 19461947: 16 January 1947 to 6 December 19471949: 16 January 1949 to 12 December 19491950: 1 January 1950 to 3 November 19501951: 14 February 1951 to 10 September 19511952: 27 March 1952 to 30 December 19521953: 9 March 1953 to 4 October 19531954: 30 April 1954 to 14 November 19541955: 9 January 1955 to 1 December 19551956: 18 January 1956 to 19 December 19561957: 24 January 1957 to 24 November 19571958: 4 January 1958 to 14 December 19581959: 19 February 1959 to 31 December 19591960: 5 January 1960 to 31 December 19601961: 7 January 1961 to 22 November 19611962: 23 February 1962 to 2 December 19621963: 18 February 1963 to 13 December 19631964: 30 January 1964 to 19 November 19641965: 2 January 1965 to 18 December 19651966: 18 January 1966 to 18 September 19661967: 20 March 1967 to 15 December 19671968: 8 January 1968 to 30 November 19681969: 14 February 1969 to 29 December 19691970: 1 February 1970 to 18 October 19701971: 25 February 1971 to 5 December 19711972: 21 April 1972 to 26 October 19721973: 3 January 1973 to 20 November 19731974: 21 February 1974 to 10 December 197419361941194619521957196219671972JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Sloan meeting 10 mm (0.39 in).
First to last qualifying date each year at Sloan
YearFirst dateLast date
19361936-02-261936-12-01
19371937-03-041937-12-28
19381938-01-051938-12-24
19391939-01-081939-12-25
19401940-02-031940-12-26
19411941-01-311941-12-12
19421942-03-011942-12-21
19431943-03-241943-12-24
19441944-01-011944-12-28
19451945-01-171945-12-03
19461946-01-041946-11-03
19471947-01-161947-12-06
19491949-01-161949-12-12
19501950-01-011950-11-03
19511951-02-141951-09-10
19521952-03-271952-12-30
19531953-03-091953-10-04
19541954-04-301954-11-14
19551955-01-091955-12-01
19561956-01-181956-12-19
19571957-01-241957-11-24
19581958-01-041958-12-14
19591959-02-191959-12-31
19601960-01-051960-12-31
19611961-01-071961-11-22
19621962-02-231962-12-02
19631963-02-181963-12-13
19641964-01-301964-11-19
19651965-01-021965-12-18
19661966-01-181966-09-18
19671967-03-201967-12-15
19681968-01-081968-11-30
19691969-02-141969-12-29
19701970-02-011970-10-18
19711971-02-251971-12-05
19721972-04-211972-10-26
19731973-01-031973-11-20
19741974-02-211974-12-10

Every Fixed Threshold

Fixed thresholds at Sloan
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3831194124
25 mm (0.98 in): Days with 25 mm or more rain381619717
50 mm (1.97 in): Days with 50 mm or more rain28619382
100 mm (3.94 in): Days with 100 mm or more rain5119381
200 mm (7.87 in): Days with 200 mm or more rain1119381
10 cm (3.9 in): Days with 10 cm or more snowfall6219461
25 cm (9.8 in): Days with 25 cm or more snowfall1119661

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1936.

Download the Data

  • Data for Sloan 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).