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Built 2026-10-17 (17 October 2026)

Kopiluila Threshold Days by Year

7 fixed thresholds counted per year at Kopiluila (USC00514771): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Kopiluila Thresholds

  • Kopiluila: days with 10 mm (0.39 in) or more of precipitation in 33 years, most in 1914 with 198.
  • Kopiluila: days with 25 mm (0.98 in) or more of precipitation in 33 years, most in 1914 with 120.
  • Kopiluila: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1914 with 53.
  • Kopiluila: days with 100 mm (3.94 in) or more of precipitation in 33 years, most in 1914 with 14.
  • 7 fixed thresholds have at least one qualifying day at Kopiluila.
33 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Kopiluila Days per year at Kopiluila with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 198 in 1914. 0501001502001905: 1691906: 1271907: 1561908: 1381909: 1521910: 1601911: 1751912: 1331913: 1211914: 1981915: 1541916: 1751917: 1091918: 1721919: 1121920: 1121921: 1321922: 1361923: 1571924: 1091925: 1431926: 951927: 1651928: 1571929: 1391930: 1821931: 1501932: 1611933: 1061934: 1531935: 1291936: 1491937: 194190519091913191719211925192919331937
Days per year at Kopiluila with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 198 in 1914.
Days with 10 mm (0.39 in) or more of precipitation per year at Kopiluila
YearDaysDecade average
1905169148.4
1906127148.4
1907156148.4
1908138148.4
1909152148.4
1910160150.9
1911175150.9
1912133150.9
1913121150.9
1914198150.9
1915154150.9
1916175150.9
1917109150.9
1918172150.9
1919112150.9
1920112134.5
1921132134.5
1922136134.5
1923157134.5
1924109134.5
1925143134.5
192695134.5
1927165134.5
1928157134.5
1929139134.5
1930182153
1931150153
1932161153
1933106153
1934153153
1935129153
1936149153
1937194153
First to last qualifying date each year at Kopiluila For each year, a bar from the first to the last day at Kopiluila meeting 10 mm (0.39 in). 1905: 1 January 1905 to 31 December 19051906: 1 January 1906 to 31 December 19061907: 2 January 1907 to 30 December 19071908: 1 January 1908 to 30 December 19081909: 23 January 1909 to 30 December 19091910: 4 January 1910 to 31 December 19101911: 1 January 1911 to 30 December 19111912: 2 January 1912 to 31 December 19121913: 1 January 1913 to 18 December 19131914: 5 January 1914 to 28 December 19141915: 2 January 1915 to 31 December 19151916: 4 January 1916 to 28 December 19161917: 1 January 1917 to 23 December 19171918: 1 January 1918 to 31 December 19181919: 4 January 1919 to 31 December 19191920: 2 January 1920 to 25 December 19201921: 3 January 1921 to 31 December 19211922: 3 January 1922 to 30 December 19221923: 1 January 1923 to 31 December 19231924: 1 January 1924 to 21 December 19241925: 1 January 1925 to 31 December 19251926: 1 January 1926 to 26 December 19261927: 3 January 1927 to 28 December 19271928: 5 January 1928 to 29 December 19281929: 1 January 1929 to 31 December 19291930: 3 January 1930 to 30 December 19301931: 7 January 1931 to 31 December 19311932: 1 January 1932 to 31 December 19321933: 1 January 1933 to 28 December 19331934: 2 January 1934 to 29 December 19341935: 1 January 1935 to 23 December 19351936: 5 January 1936 to 31 December 19361937: 1 January 1937 to 31 December 19371905191019151920192519301935JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Kopiluila meeting 10 mm (0.39 in).
First to last qualifying date each year at Kopiluila
YearFirst dateLast date
19051905-01-011905-12-31
19061906-01-011906-12-31
19071907-01-021907-12-30
19081908-01-011908-12-30
19091909-01-231909-12-30
19101910-01-041910-12-31
19111911-01-011911-12-30
19121912-01-021912-12-31
19131913-01-011913-12-18
19141914-01-051914-12-28
19151915-01-021915-12-31
19161916-01-041916-12-28
19171917-01-011917-12-23
19181918-01-011918-12-31
19191919-01-041919-12-31
19201920-01-021920-12-25
19211921-01-031921-12-31
19221922-01-031922-12-30
19231923-01-011923-12-31
19241924-01-011924-12-21
19251925-01-011925-12-31
19261926-01-011926-12-26
19271927-01-031927-12-28
19281928-01-051928-12-29
19291929-01-011929-12-31
19301930-01-031930-12-30
19311931-01-071931-12-31
19321932-01-011932-12-31
19331933-01-011933-12-28
19341934-01-021934-12-29
19351935-01-011935-12-23
19361936-01-051936-12-31
19371937-01-011937-12-31

Every Fixed Threshold

Fixed thresholds at Kopiluila
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days2119051
20 C (68 F): Tropical nights (min2133190523
10 mm (0.39 in): Days with 10 mm or more rain331981914194
25 mm (0.98 in): Days with 25 mm or more rain33120191492
50 mm (1.97 in): Days with 50 mm or more rain3353191436
100 mm (3.94 in): Days with 100 mm or more rain3314191410
200 mm (7.87 in): Days with 200 mm or more rain22419211

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

  • Data for Kopiluila 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).