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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Twin Hills Threshold Days by Year (ASN00008289)

3 fixed thresholds counted per year at Twin Hills (ASN00008289): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Twin Hills Thresholds

  • Twin Hills: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1974 with 30.
  • Twin Hills: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1999 with 8.
  • Twin Hills: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1999 with 3.
  • 3 fixed thresholds have at least one qualifying day at Twin Hills.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Twin Hills Days per year at Twin Hills with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1974. 01020301973: 161974: 301976: 111977: 71978: 201979: 91980: 121982: 101983: 181989: 101990: 111991: 151992: 201993: 131994: 121995: 211996: 231997: 171998: 111999: 242000: 92001: 172002: 112003: 162004: 112006: 6197319771980198919921995199820012004
Days per year at Twin Hills with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 30 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Twin Hills
YearDaysDecade average
19731615.5
19743015.5
19761115.5
1977715.5
19782015.5
1979915.5
19801212.5
19821012.5
19831812.5
19891012.5
19901116.7
19911516.7
19922016.7
19931316.7
19941216.7
19952116.7
19962316.7
19971716.7
19981116.7
19992416.7
2000911.7
20011711.7
20021111.7
20031611.7
20041111.7
2006611.7
First to last qualifying date each year at Twin Hills For each year, a bar from the first to the last day at Twin Hills meeting 10 mm (0.39 in). 1973: 23 April 1973 to 25 September 19731974: 4 March 1974 to 14 November 19741976: 28 February 1976 to 11 November 19761977: 11 May 1977 to 12 October 19771978: 24 February 1978 to 19 December 19781979: 14 March 1979 to 11 November 19791980: 22 April 1980 to 22 October 19801982: 2 May 1982 to 12 October 19821983: 3 May 1983 to 28 December 19831989: 7 April 1989 to 2 October 19891990: 20 April 1990 to 6 October 19901991: 4 June 1991 to 25 December 19911992: 7 February 1992 to 30 September 19921993: 2 May 1993 to 15 October 19931994: 23 May 1994 to 11 September 19941995: 13 January 1995 to 18 October 19951996: 8 February 1996 to 6 November 19961997: 7 April 1997 to 12 November 19971998: 10 May 1998 to 22 July 19981999: 20 March 1999 to 14 October 19992000: 22 January 2000 to 6 August 20002001: 12 February 2001 to 19 October 20012002: 17 April 2002 to 15 September 20022003: 9 May 2003 to 22 September 20032004: 8 May 2004 to 24 September 20042006: 6 February 2006 to 8 September 20061973197819831992199620002004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Twin Hills meeting 10 mm (0.39 in).
First to last qualifying date each year at Twin Hills
YearFirst dateLast date
19731973-04-231973-09-25
19741974-03-041974-11-14
19761976-02-281976-11-11
19771977-05-111977-10-12
19781978-02-241978-12-19
19791979-03-141979-11-11
19801980-04-221980-10-22
19821982-05-021982-10-12
19831983-05-031983-12-28
19891989-04-071989-10-02
19901990-04-201990-10-06
19911991-06-041991-12-25
19921992-02-071992-09-30
19931993-05-021993-10-15
19941994-05-231994-09-11
19951995-01-131995-10-18
19961996-02-081996-11-06
19971997-04-071997-11-12
19981998-05-101998-07-22
19991999-03-201999-10-14
20002000-01-222000-08-06
20012001-02-122001-10-19
20022002-04-172002-09-15
20032003-05-092003-09-22
20042004-05-082004-09-24
20062006-02-062006-09-08

Every Fixed Threshold

Fixed thresholds at Twin Hills
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain263019746
25 mm (0.98 in): Days with 25 mm or more rain23819991
50 mm (1.97 in): Days with 50 mm or more rain4319993

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Twin Hills 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 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

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