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Built 2026-10-18 (18 October 2026)

Mount Lowe Threshold Days by Year

4 fixed thresholds counted per year at Mount Lowe (ASN00035153): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Lowe Thresholds

  • Mount Lowe: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1975 with 33.
  • Mount Lowe: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1983 with 17.
  • Mount Lowe: days with 50 mm (1.97 in) or more of precipitation in 25 years, most in 1983 with 5.
  • Mount Lowe: days with 100 mm (3.94 in) or more of precipitation in 5 years, most in 1998 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mount Lowe.
38 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Lowe Days per year at Mount Lowe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1975. 0102030401971: 221972: 161973: 241974: 291975: 331976: 241977: 181978: 251979: 131980: 191981: 251982: 71983: 241984: 191985: 261986: 221987: 271988: 221989: 281990: 201991: 181992: 101993: 141994: 121995: 241996: 171997: 211998: 241999: 142000: 222001: 92002: 112003: 122004: 162005: 142006: 152007: 242008: 161971197519791983198719911995199920032007
Days per year at Mount Lowe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1975.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Lowe
YearDaysDecade average
19712222.7
19721622.7
19732422.7
19742922.7
19753322.7
19762422.7
19771822.7
19782522.7
19791322.7
19801921.9
19812521.9
1982721.9
19832421.9
19841921.9
19852621.9
19862221.9
19872721.9
19882221.9
19892821.9
19902017.4
19911817.4
19921017.4
19931417.4
19941217.4
19952417.4
19961717.4
19972117.4
19982417.4
19991417.4
20002215.4
2001915.4
20021115.4
20031215.4
20041615.4
20051415.4
20061515.4
20072415.4
20081615.4
First to last qualifying date each year at Mount Lowe For each year, a bar from the first to the last day at Mount Lowe meeting 10 mm (0.39 in). 1971: 25 January 1971 to 26 December 19711972: 15 January 1972 to 31 December 19721973: 9 January 1973 to 28 December 19731974: 1 January 1974 to 29 December 19741975: 2 January 1975 to 30 December 19751976: 14 January 1976 to 23 December 19761977: 14 January 1977 to 6 December 19771978: 5 January 1978 to 27 December 19781979: 25 January 1979 to 16 December 19791980: 6 January 1980 to 31 December 19801981: 2 January 1981 to 4 December 19811982: 16 January 1982 to 21 December 19821983: 2 January 1983 to 3 December 19831984: 16 January 1984 to 17 December 19841985: 24 February 1985 to 28 December 19851986: 3 February 1986 to 22 December 19861987: 2 January 1987 to 31 December 19871988: 3 February 1988 to 28 December 19881989: 3 January 1989 to 19 November 19891990: 16 January 1990 to 30 December 19901991: 4 January 1991 to 12 December 19911992: 4 January 1992 to 19 December 19921993: 5 January 1993 to 25 November 19931994: 3 February 1994 to 19 December 19941995: 2 January 1995 to 23 December 19951996: 3 January 1996 to 19 December 19961997: 11 February 1997 to 21 December 19971998: 11 January 1998 to 30 December 19981999: 3 January 1999 to 19 December 19992000: 7 January 2000 to 29 December 20002001: 1 February 2001 to 17 December 20012002: 1 January 2002 to 27 December 20022003: 6 February 2003 to 29 December 20032004: 9 January 2004 to 17 December 20042005: 7 January 2005 to 16 November 20052006: 21 January 2006 to 28 December 20062007: 12 January 2007 to 24 December 20072008: 6 January 2008 to 30 November 200819711976198119861991199620012006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Lowe meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount Lowe
YearFirst dateLast date
19711971-01-251971-12-26
19721972-01-151972-12-31
19731973-01-091973-12-28
19741974-01-011974-12-29
19751975-01-021975-12-30
19761976-01-141976-12-23
19771977-01-141977-12-06
19781978-01-051978-12-27
19791979-01-251979-12-16
19801980-01-061980-12-31
19811981-01-021981-12-04
19821982-01-161982-12-21
19831983-01-021983-12-03
19841984-01-161984-12-17
19851985-02-241985-12-28
19861986-02-031986-12-22
19871987-01-021987-12-31
19881988-02-031988-12-28
19891989-01-031989-11-19
19901990-01-161990-12-30
19911991-01-041991-12-12
19921992-01-041992-12-19
19931993-01-051993-11-25
19941994-02-031994-12-19
19951995-01-021995-12-23
19961996-01-031996-12-19
19971997-02-111997-12-21
19981998-01-111998-12-30
19991999-01-031999-12-19
20002000-01-072000-12-29
20012001-02-012001-12-17
20022002-01-012002-12-27
20032003-02-062003-12-29
20042004-01-092004-12-17
20052005-01-072005-11-16
20062006-01-212006-12-28
20072007-01-122007-12-24
20082008-01-062008-11-30

Every Fixed Threshold

Fixed thresholds at Mount Lowe
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3833197516
25 mm (0.98 in): Days with 25 mm or more rain381719837
50 mm (1.97 in): Days with 50 mm or more rain25519831
100 mm (3.94 in): Days with 100 mm or more rain5219981

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1971.

Download the Data

  • Data for Mount Lowe 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).