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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Castle Mountain Threshold Days by Year

4 fixed thresholds counted per year at Castle Mountain (ASN00055010): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Castle Mountain Thresholds

  • Castle Mountain: days with 10 mm (0.39 in) or more of precipitation in 48 years, most in 1921 with 30.
  • Castle Mountain: days with 25 mm (0.98 in) or more of precipitation in 48 years, most in 1894 with 9.
  • Castle Mountain: days with 50 mm (1.97 in) or more of precipitation in 29 years, most in 1898 with 2.
  • Castle Mountain: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1921 with 1.
  • 4 fixed thresholds have at least one qualifying day at Castle Mountain.
48 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Castle Mountain Days per year at Castle Mountain with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1921. 01020301893: 291894: 271895: 161896: 291897: 191898: 161900: 231901: 151902: 151903: 271904: 221905: 191906: 171907: 211908: 201909: 281910: 161911: 181912: 161913: 191914: 211915: 111916: 291917: 251918: 131919: 121920: 251921: 301922: 141923: 151924: 271925: 181926: 211927: 201928: 201929: 191930: 201931: 241932: 241933: 281934: 211935: 171936: 211937: 181940: 81941: 181942: 151945: 251893189819041909191419191924192919341941
Days per year at Castle Mountain with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1921.
Days with 10 mm (0.39 in) or more of precipitation per year at Castle Mountain
YearDaysDecade average
18932922.7
18942722.7
18951622.7
18962922.7
18971922.7
18981622.7
19002320.7
19011520.7
19021520.7
19032720.7
19042220.7
19051920.7
19061720.7
19072120.7
19082020.7
19092820.7
19101618
19111818
19121618
19131918
19142118
19151118
19162918
19172518
19181318
19191218
19202520.9
19213020.9
19221420.9
19231520.9
19242720.9
19251820.9
19262120.9
19272020.9
19282020.9
19291920.9
19302021.6
19312421.6
19322421.6
19332821.6
19342121.6
19351721.6
19362121.6
19371821.6
1940816.5
19411816.5
19421516.5
19452516.5
First to last qualifying date each year at Castle Mountain For each year, a bar from the first to the last day at Castle Mountain meeting 10 mm (0.39 in). 1893: 23 January 1893 to 16 December 18931894: 6 January 1894 to 29 December 18941895: 6 January 1895 to 17 December 18951896: 22 January 1896 to 15 December 18961897: 1 January 1897 to 21 December 18971898: 13 January 1898 to 25 December 18981900: 8 January 1900 to 22 December 19001901: 11 March 1901 to 14 November 19011902: 3 January 1902 to 19 December 19021903: 28 February 1903 to 25 December 19031904: 23 January 1904 to 19 December 19041905: 18 January 1905 to 15 October 19051906: 2 March 1906 to 29 November 19061907: 12 January 1907 to 27 December 19071908: 8 January 1908 to 12 December 19081909: 21 January 1909 to 25 December 19091910: 12 January 1910 to 18 December 19101911: 12 January 1911 to 3 December 19111912: 1 January 1912 to 28 December 19121913: 8 January 1913 to 13 November 19131914: 11 January 1914 to 28 December 19141915: 31 January 1915 to 15 December 19151916: 29 January 1916 to 25 December 19161917: 12 January 1917 to 13 December 19171918: 1 January 1918 to 26 November 19181919: 8 January 1919 to 28 December 19191920: 5 January 1920 to 10 December 19201921: 17 February 1921 to 27 December 19211922: 8 January 1922 to 26 December 19221923: 16 January 1923 to 27 December 19231924: 6 January 1924 to 7 December 19241925: 17 January 1925 to 23 December 19251926: 5 January 1926 to 28 December 19261927: 19 January 1927 to 8 December 19271928: 24 January 1928 to 22 December 19281929: 8 January 1929 to 22 November 19291930: 25 January 1930 to 18 December 19301931: 3 January 1931 to 24 December 19311932: 27 January 1932 to 24 December 19321933: 21 January 1933 to 15 December 19331934: 28 January 1934 to 24 December 19341935: 6 January 1935 to 2 December 19351936: 10 January 1936 to 23 December 19361937: 2 January 1937 to 30 December 19371940: 20 March 1940 to 31 December 19401941: 1 January 1941 to 27 October 19411942: 3 January 1942 to 28 December 19421945: 13 January 1945 to 19 December 194518931900190619121918192419301936JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Castle Mountain meeting 10 mm (0.39 in).
First to last qualifying date each year at Castle Mountain
YearFirst dateLast date
18931893-01-231893-12-16
18941894-01-061894-12-29
18951895-01-061895-12-17
18961896-01-221896-12-15
18971897-01-011897-12-21
18981898-01-131898-12-25
19001900-01-081900-12-22
19011901-03-111901-11-14
19021902-01-031902-12-19
19031903-02-281903-12-25
19041904-01-231904-12-19
19051905-01-181905-10-15
19061906-03-021906-11-29
19071907-01-121907-12-27
19081908-01-081908-12-12
19091909-01-211909-12-25
19101910-01-121910-12-18
19111911-01-121911-12-03
19121912-01-011912-12-28
19131913-01-081913-11-13
19141914-01-111914-12-28
19151915-01-311915-12-15
19161916-01-291916-12-25
19171917-01-121917-12-13
19181918-01-011918-11-26
19191919-01-081919-12-28
19201920-01-051920-12-10
19211921-02-171921-12-27
19221922-01-081922-12-26
19231923-01-161923-12-27
19241924-01-061924-12-07
19251925-01-171925-12-23
19261926-01-051926-12-28
19271927-01-191927-12-08
19281928-01-241928-12-22
19291929-01-081929-11-22
19301930-01-251930-12-18
19311931-01-031931-12-24
19321932-01-271932-12-24
19331933-01-211933-12-15
19341934-01-281934-12-24
19351935-01-061935-12-02
19361936-01-101936-12-23
19371937-01-021937-12-30
19401940-03-201940-12-31
19411941-01-011941-10-27
19421942-01-031942-12-28
19451945-01-131945-12-19

Every Fixed Threshold

Fixed thresholds at Castle Mountain
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4830192125
25 mm (0.98 in): Days with 25 mm or more rain48918945
50 mm (1.97 in): Days with 50 mm or more rain29218982
100 mm (3.94 in): Days with 100 mm or more rain1119211

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

  • Data for Castle Mountain 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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