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Built 2026-10-17 (17 October 2026)

Grimes Pass 6 S Threshold Days by Year

5 fixed thresholds counted per year at Grimes Pass 6 S (USC00103861): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Grimes Pass 6 S Thresholds

  • Grimes Pass 6 S: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1942 with 31.
  • Grimes Pass 6 S: days with 25 mm (0.98 in) or more of precipitation in 34 years, most in 1927 with 9.
  • Grimes Pass 6 S: days with 10 cm (3.9 in) or more of snowfall in 25 years, most in 1937 with 19.
  • Grimes Pass 6 S: days with 25 cm (9.8 in) or more of snowfall in 18 years, most in 1937 with 5.
  • 5 fixed thresholds have at least one qualifying day at Grimes Pass 6 S.
38 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Grimes Pass 6 S Days per year at Grimes Pass 6 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1942. 0102030401910: 241911: 241912: 261913: 251914: 141915: 261916: 221917: 291918: 161919: 251920: 221921: 211922: 191924: 131925: 211926: 251927: 271928: 121929: 181930: 151931: 221932: 211933: 201934: 191935: 71936: 261937: 271938: 271939: 151940: 291941: 291942: 311943: 231944: 201945: 301946: 251947: 181948: 251910191419181922192719311935193919431947
Days per year at Grimes Pass 6 S with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 31 in 1942.
Days with 10 mm (0.39 in) or more of precipitation per year at Grimes Pass 6 S
YearDaysDecade average
19102423.1
19112423.1
19122623.1
19132523.1
19141423.1
19152623.1
19162223.1
19172923.1
19181623.1
19192523.1
19202219.8
19212119.8
19221919.8
19241319.8
19252119.8
19262519.8
19272719.8
19281219.8
19291819.8
19301519.9
19312219.9
19322119.9
19332019.9
19341919.9
1935719.9
19362619.9
19372719.9
19382719.9
19391519.9
19402925.6
19412925.6
19423125.6
19432325.6
19442025.6
19453025.6
19462525.6
19471825.6
19482525.6
First to last qualifying date each year at Grimes Pass 6 S For each year, a bar from the first to the last day at Grimes Pass 6 S meeting 10 mm (0.39 in). 1910: 1 January 1910 to 8 December 19101911: 19 January 1911 to 27 December 19111912: 6 January 1912 to 29 December 19121913: 7 January 1913 to 31 December 19131914: 21 January 1914 to 17 October 19141915: 13 January 1915 to 27 December 19151916: 3 January 1916 to 3 December 19161917: 2 January 1917 to 27 December 19171918: 6 January 1918 to 14 November 19181919: 16 January 1919 to 19 December 19191920: 24 January 1920 to 30 December 19201921: 1 January 1921 to 1 December 19211922: 1 January 1922 to 30 December 19221924: 4 February 1924 to 29 December 19241925: 13 January 1925 to 1 December 19251926: 28 January 1926 to 20 December 19261927: 19 January 1927 to 31 December 19271928: 1 January 1928 to 31 December 19281929: 3 January 1929 to 18 December 19291930: 4 January 1930 to 15 November 19301931: 1 January 1931 to 31 December 19311932: 9 February 1932 to 19 December 19321933: 1 January 1933 to 31 December 19331934: 19 January 1934 to 29 December 19341935: 7 March 1935 to 16 May 19351936: 1 January 1936 to 26 December 19361937: 13 January 1937 to 26 December 19371938: 14 January 1938 to 2 December 19381939: 5 January 1939 to 17 December 19391940: 2 January 1940 to 27 December 19401941: 14 January 1941 to 20 December 19411942: 8 January 1942 to 31 December 19421943: 1 January 1943 to 4 November 19431944: 4 February 1944 to 19 December 19441945: 7 January 1945 to 29 December 19451946: 5 January 1946 to 14 December 19461947: 13 January 1947 to 30 October 19471948: 2 January 1948 to 31 December 194819101915192019261931193619411946JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Grimes Pass 6 S meeting 10 mm (0.39 in).
First to last qualifying date each year at Grimes Pass 6 S
YearFirst dateLast date
19101910-01-011910-12-08
19111911-01-191911-12-27
19121912-01-061912-12-29
19131913-01-071913-12-31
19141914-01-211914-10-17
19151915-01-131915-12-27
19161916-01-031916-12-03
19171917-01-021917-12-27
19181918-01-061918-11-14
19191919-01-161919-12-19
19201920-01-241920-12-30
19211921-01-011921-12-01
19221922-01-011922-12-30
19241924-02-041924-12-29
19251925-01-131925-12-01
19261926-01-281926-12-20
19271927-01-191927-12-31
19281928-01-011928-12-31
19291929-01-031929-12-18
19301930-01-041930-11-15
19311931-01-011931-12-31
19321932-02-091932-12-19
19331933-01-011933-12-31
19341934-01-191934-12-29
19351935-03-071935-05-16
19361936-01-011936-12-26
19371937-01-131937-12-26
19381938-01-141938-12-02
19391939-01-051939-12-17
19401940-01-021940-12-27
19411941-01-141941-12-20
19421942-01-081942-12-31
19431943-01-011943-11-04
19441944-02-041944-12-19
19451945-01-071945-12-29
19461946-01-051946-12-14
19471947-01-131947-10-30
19481948-01-021948-12-31

Every Fixed Threshold

Fixed thresholds at Grimes Pass 6 S
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3831194225
25 mm (0.98 in): Days with 25 mm or more rain34919273
50 mm (1.97 in): Days with 50 mm or more rain6219331
10 cm (3.9 in): Days with 10 cm or more snowfall251919378
25 cm (9.8 in): Days with 25 cm or more snowfall18519371

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 Grimes Pass 6 S 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). Threshold counts are computed by this site.

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