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Built 2026-10-19 (19 October 2026)

Parallel Threshold Days by Year (USC00146217)

6 fixed thresholds counted per year at Parallel (USC00146217): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Parallel Thresholds

  • Parallel: days with 10 mm (0.39 in) or more of precipitation in 49 years, most in 1993 with 40.
  • Parallel: days with 25 mm (0.98 in) or more of precipitation in 49 years, most in 1977 with 15.
  • Parallel: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 1973 with 5.
  • Parallel: days with 10 cm (3.9 in) or more of snowfall in 34 years, most in 1960 with 6.
  • 6 fixed thresholds have at least one qualifying day at Parallel.
49 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Parallel Days per year at Parallel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1993. 0102030401960: 251961: 301962: 271963: 171964: 331965: 341966: 121967: 251968: 301969: 281970: 251971: 271972: 231973: 381974: 151975: 281976: 191977: 301978: 211979: 261980: 211981: 291982: 291983: 241984: 251985: 291987: 311988: 171989: 251990: 271991: 181992: 341993: 401994: 251995: 271996: 321997: 191998: 351999: 272000: 202001: 302002: 202003: 212004: 312005: 312006: 242007: 262008: 302009: 321960196519701975198019851991199620012006
Days per year at Parallel with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 40 in 1993.
Days with 10 mm (0.39 in) or more of precipitation per year at Parallel
YearDaysDecade average
19602526.1
19613026.1
19622726.1
19631726.1
19643326.1
19653426.1
19661226.1
19672526.1
19683026.1
19692826.1
19702525.2
19712725.2
19722325.2
19733825.2
19741525.2
19752825.2
19761925.2
19773025.2
19782125.2
19792625.2
19802125.6
19812925.6
19822925.6
19832425.6
19842525.6
19852925.6
19873125.6
19881725.6
19892525.6
19902728.4
19911828.4
19923428.4
19934028.4
19942528.4
19952728.4
19963228.4
19971928.4
19983528.4
19992728.4
20002026.5
20013026.5
20022026.5
20032126.5
20043126.5
20053126.5
20062426.5
20072626.5
20083026.5
20093226.5
First to last qualifying date each year at Parallel For each year, a bar from the first to the last day at Parallel meeting 10 mm (0.39 in). 1960: 13 January 1960 to 11 December 19601961: 12 March 1961 to 18 November 19611962: 26 January 1962 to 16 November 19621963: 4 March 1963 to 20 November 19631964: 20 March 1964 to 11 December 19641965: 10 February 1965 to 24 December 19651966: 9 February 1966 to 28 December 19661967: 26 March 1967 to 3 November 19671968: 3 April 1968 to 19 December 19681969: 15 February 1969 to 7 December 19691970: 2 April 1970 to 9 November 19701971: 3 January 1971 to 29 November 19711972: 21 April 1972 to 30 December 19721973: 4 January 1973 to 24 December 19731974: 11 April 1974 to 10 November 19741975: 4 February 1975 to 14 December 19751976: 4 March 1976 to 4 October 19761977: 3 March 1977 to 9 November 19771978: 13 February 1978 to 26 November 19781979: 19 January 1979 to 21 November 19791980: 19 January 1980 to 8 December 19801981: 1 February 1981 to 1 December 19811982: 15 March 1982 to 28 December 19821983: 31 January 1983 to 21 December 19831984: 19 March 1984 to 14 December 19841985: 10 January 1985 to 19 October 19851987: 9 January 1987 to 27 December 19871988: 3 February 1988 to 16 November 19881989: 28 January 1989 to 28 October 19891990: 15 February 1990 to 27 November 19901991: 17 March 1991 to 23 December 19911992: 5 January 1992 to 14 December 19921993: 20 January 1993 to 14 December 19931994: 27 January 1994 to 7 December 19941995: 14 March 1995 to 1 November 19951996: 18 January 1996 to 30 November 19961997: 4 February 1997 to 24 December 19971998: 4 January 1998 to 8 November 19981999: 31 January 1999 to 23 November 19992000: 23 February 2000 to 1 November 20002001: 29 January 2001 to 24 November 20012002: 31 January 2002 to 30 October 20022003: 14 February 2003 to 10 December 20032004: 26 January 2004 to 5 December 20042005: 5 January 2005 to 28 November 20052006: 21 March 2006 to 30 December 20062007: 1 January 2007 to 10 December 20072008: 6 February 2008 to 11 November 20082009: 8 March 2009 to 25 December 20091960196719741981198919962003JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Parallel meeting 10 mm (0.39 in).
First to last qualifying date each year at Parallel
YearFirst dateLast date
19601960-01-131960-12-11
19611961-03-121961-11-18
19621962-01-261962-11-16
19631963-03-041963-11-20
19641964-03-201964-12-11
19651965-02-101965-12-24
19661966-02-091966-12-28
19671967-03-261967-11-03
19681968-04-031968-12-19
19691969-02-151969-12-07
19701970-04-021970-11-09
19711971-01-031971-11-29
19721972-04-211972-12-30
19731973-01-041973-12-24
19741974-04-111974-11-10
19751975-02-041975-12-14
19761976-03-041976-10-04
19771977-03-031977-11-09
19781978-02-131978-11-26
19791979-01-191979-11-21
19801980-01-191980-12-08
19811981-02-011981-12-01
19821982-03-151982-12-28
19831983-01-311983-12-21
19841984-03-191984-12-14
19851985-01-101985-10-19
19871987-01-091987-12-27
19881988-02-031988-11-16
19891989-01-281989-10-28
19901990-02-151990-11-27
19911991-03-171991-12-23
19921992-01-051992-12-14
19931993-01-201993-12-14
19941994-01-271994-12-07
19951995-03-141995-11-01
19961996-01-181996-11-30
19971997-02-041997-12-24
19981998-01-041998-11-08
19991999-01-311999-11-23
20002000-02-232000-11-01
20012001-01-292001-11-24
20022002-01-312002-10-30
20032003-02-142003-12-10
20042004-01-262004-12-05
20052005-01-052005-11-28
20062006-03-212006-12-30
20072007-01-012007-12-10
20082008-02-062008-11-11
20092009-03-082009-12-25

Every Fixed Threshold

Fixed thresholds at Parallel
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4940199332
25 mm (0.98 in): Days with 25 mm or more rain491519779
50 mm (1.97 in): Days with 50 mm or more rain39519732
100 mm (3.94 in): Days with 100 mm or more rain5220072
10 cm (3.9 in): Days with 10 cm or more snowfall34619604
25 cm (9.8 in): Days with 25 cm or more snowfall2119781

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1960.

Download the Data

  • Data for Parallel 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).