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Built 2026-10-18 (18 October 2026)

Mount Nicholson Threshold Days by Year

4 fixed thresholds counted per year at Mount Nicholson (ASN00035175): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Mount Nicholson Thresholds

  • Mount Nicholson: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 2010 with 42.
  • Mount Nicholson: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 2010 with 22.
  • Mount Nicholson: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 2010 with 9.
  • Mount Nicholson: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1977 with 2.
  • 4 fixed thresholds have at least one qualifying day at Mount Nicholson.
44 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Nicholson Days per year at Mount Nicholson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 2010. 02040601967: 231968: 301969: 91970: 241971: 261972: 171973: 371974: 241975: 281976: 321977: 141978: 331979: 171980: 161981: 241982: 171983: 331984: 341985: 231986: 211987: 211988: 251989: 331990: 231991: 171992: 211993: 201994: 171995: 211996: 191997: 221998: 231999: 242000: 332001: 152002: 122003: 222004: 252005: 182006: 62007: 192008: 222009: 102010: 42196719721977198219871992199720022007
Days per year at Mount Nicholson with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 2010.
Days with 10 mm (0.39 in) or more of precipitation per year at Mount Nicholson
YearDaysDecade average
19672320.7
19683020.7
1969920.7
19702425.2
19712625.2
19721725.2
19733725.2
19742425.2
19752825.2
19763225.2
19771425.2
19783325.2
19791725.2
19801624.7
19812424.7
19821724.7
19833324.7
19843424.7
19852324.7
19862124.7
19872124.7
19882524.7
19893324.7
19902320.7
19911720.7
19922120.7
19932020.7
19941720.7
19952120.7
19961920.7
19972220.7
19982320.7
19992420.7
20003318.2
20011518.2
20021218.2
20032218.2
20042518.2
20051818.2
2006618.2
20071918.2
20082218.2
20091018.2
20104242
First to last qualifying date each year at Mount Nicholson For each year, a bar from the first to the last day at Mount Nicholson meeting 10 mm (0.39 in). 1967: 1 January 1967 to 22 December 19671968: 8 January 1968 to 20 December 19681969: 1 January 1969 to 12 December 19691970: 23 January 1970 to 27 December 19701971: 1 January 1971 to 27 December 19711972: 13 January 1972 to 31 December 19721973: 11 January 1973 to 27 December 19731974: 8 January 1974 to 28 December 19741975: 3 January 1975 to 24 December 19751976: 14 January 1976 to 27 December 19761977: 12 January 1977 to 19 December 19771978: 17 January 1978 to 25 December 19781979: 7 February 1979 to 28 December 19791980: 7 January 1980 to 31 December 19801981: 2 January 1981 to 25 December 19811982: 3 January 1982 to 20 December 19821983: 1 January 1983 to 29 December 19831984: 16 January 1984 to 20 December 19841985: 23 January 1985 to 27 December 19851986: 10 January 1986 to 18 December 19861987: 2 January 1987 to 30 December 19871988: 5 January 1988 to 27 December 19881989: 3 January 1989 to 15 December 19891990: 18 February 1990 to 29 December 19901991: 1 January 1991 to 22 December 19911992: 4 January 1992 to 13 December 19921993: 6 January 1993 to 18 December 19931994: 3 February 1994 to 10 December 19941995: 3 January 1995 to 24 December 19951996: 3 January 1996 to 30 December 19961997: 26 January 1997 to 24 December 19971998: 30 January 1998 to 21 December 19981999: 1 January 1999 to 27 December 19992000: 3 January 2000 to 29 December 20002001: 3 February 2001 to 18 December 20012002: 5 January 2002 to 11 December 20022003: 5 February 2003 to 12 December 20032004: 11 January 2004 to 25 December 20042005: 18 January 2005 to 2 December 20052006: 27 February 2006 to 28 December 20062007: 13 February 2007 to 28 December 20072008: 6 January 2008 to 28 December 20082009: 2 January 2009 to 30 December 20092010: 2 January 2010 to 30 December 201019671973197919851991199720032009JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Mount Nicholson meeting 10 mm (0.39 in).
First to last qualifying date each year at Mount Nicholson
YearFirst dateLast date
19671967-01-011967-12-22
19681968-01-081968-12-20
19691969-01-011969-12-12
19701970-01-231970-12-27
19711971-01-011971-12-27
19721972-01-131972-12-31
19731973-01-111973-12-27
19741974-01-081974-12-28
19751975-01-031975-12-24
19761976-01-141976-12-27
19771977-01-121977-12-19
19781978-01-171978-12-25
19791979-02-071979-12-28
19801980-01-071980-12-31
19811981-01-021981-12-25
19821982-01-031982-12-20
19831983-01-011983-12-29
19841984-01-161984-12-20
19851985-01-231985-12-27
19861986-01-101986-12-18
19871987-01-021987-12-30
19881988-01-051988-12-27
19891989-01-031989-12-15
19901990-02-181990-12-29
19911991-01-011991-12-22
19921992-01-041992-12-13
19931993-01-061993-12-18
19941994-02-031994-12-10
19951995-01-031995-12-24
19961996-01-031996-12-30
19971997-01-261997-12-24
19981998-01-301998-12-21
19991999-01-011999-12-27
20002000-01-032000-12-29
20012001-02-032001-12-18
20022002-01-052002-12-11
20032003-02-052003-12-12
20042004-01-112004-12-25
20052005-01-182005-12-02
20062006-02-272006-12-28
20072007-02-132007-12-28
20082008-01-062008-12-28
20092009-01-022009-12-30
20102010-01-022010-12-30

Every Fixed Threshold

Fixed thresholds at Mount Nicholson
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4442201042
25 mm (0.98 in): Days with 25 mm or more rain4422201022
50 mm (1.97 in): Days with 50 mm or more rain36920109
100 mm (3.94 in): Days with 100 mm or more rain13219772

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1967.

Download the Data

  • Data for Mount Nicholson 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).