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Built 2026-10-19 (19 October 2026)

Roberts 1 W Threshold Days by Year (USC00247128)

6 fixed thresholds counted per year at Roberts 1 W (USC00247128): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Roberts 1 W Thresholds

  • Roberts 1 W: days with 10 mm (0.39 in) or more of precipitation in 73 years, most in 1975 with 21.
  • Roberts 1 W: days with 25 mm (0.98 in) or more of precipitation in 61 years, most in 1974 with 6.
  • Roberts 1 W: days with 50 mm (1.97 in) or more of precipitation in 13 years, most in 2023 with 2.
  • Roberts 1 W: days with 10 cm (3.9 in) or more of snowfall in 13 years, most in 1955 with 12.
  • 6 fixed thresholds have at least one qualifying day at Roberts 1 W.
73 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Roberts 1 W Days per year at Roberts 1 W with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1975. 01020301952: 111953: 131954: 81955: 131956: 41957: 161958: 81959: 101960: 41961: 121962: 111963: 101964: 101965: 181968: 91969: 101970: 121971: 111972: 111973: 91974: 111975: 211976: 91977: 81978: 151979: 51980: 81981: 81982: 121983: 101984: 31985: 61986: 91987: 91988: 51989: 71990: 71991: 111992: 81993: 121994: 121995: 121996: 91997: 111998: 81999: 52000: 102001: 102002: 52003: 92004: 82005: 112006: 102007: 92008: 122009: 102010: 82011: 112012: 42013: 112014: 112015: 102016: 112017: 112018: 92019: 122020: 82021: 92022: 92023: 122024: 72025: 102026: 31952196019701978198619942002201020182026
Days per year at Roberts 1 W with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1975.
Days with 10 mm (0.39 in) or more of precipitation per year at Roberts 1 W
YearDaysDecade average
19521110.4
19531310.4
1954810.4
19551310.4
1956410.4
19571610.4
1958810.4
19591010.4
1960410.5
19611210.5
19621110.5
19631010.5
19641010.5
19651810.5
1968910.5
19691010.5
19701211.2
19711111.2
19721111.2
1973911.2
19741111.2
19752111.2
1976911.2
1977811.2
19781511.2
1979511.2
198087.7
198187.7
1982127.7
1983107.7
198437.7
198567.7
198697.7
198797.7
198857.7
198977.7
199079.5
1991119.5
199289.5
1993129.5
1994129.5
1995129.5
199699.5
1997119.5
199889.5
199959.5
2000109.4
2001109.4
200259.4
200399.4
200489.4
2005119.4
2006109.4
200799.4
2008129.4
2009109.4
201089.8
2011119.8
201249.8
2013119.8
2014119.8
2015109.8
2016119.8
2017119.8
201899.8
2019129.8
202088.3
202198.3
202298.3
2023128.3
202478.3
2025108.3
202638.3
First to last qualifying date each year at Roberts 1 W For each year, a bar from the first to the last day at Roberts 1 W meeting 10 mm (0.39 in). 1952: 8 April 1952 to 24 November 19521953: 7 April 1953 to 21 December 19531954: 11 March 1954 to 24 October 19541955: 9 February 1955 to 24 December 19551956: 1 April 1956 to 18 August 19561957: 13 March 1957 to 1 November 19571958: 18 January 1958 to 23 July 19581959: 16 April 1959 to 12 November 19591960: 22 April 1960 to 9 October 19601961: 23 April 1961 to 15 November 19611962: 8 January 1962 to 22 November 19621963: 16 March 1963 to 21 September 19631964: 6 April 1964 to 18 June 19641965: 28 January 1965 to 16 September 19651968: 18 March 1968 to 20 September 19681969: 6 January 1969 to 16 November 19691970: 26 April 1970 to 12 October 19701971: 29 March 1971 to 27 October 19711972: 1 January 1972 to 2 December 19721973: 23 March 1973 to 1 November 19731974: 2 March 1974 to 31 October 19741975: 18 January 1975 to 10 December 19751976: 16 April 1976 to 7 September 19761977: 25 March 1977 to 19 November 19771978: 28 February 1978 to 10 November 19781979: 9 May 1979 to 16 October 19791980: 25 March 1980 to 15 October 19801981: 27 March 1981 to 24 October 19811982: 19 March 1982 to 1 December 19821983: 18 March 1983 to 15 October 19831984: 25 April 1984 to 1 August 19841985: 10 May 1985 to 27 September 19851986: 26 April 1986 to 6 November 19861987: 16 May 1987 to 25 August 19871988: 1 May 1988 to 17 October 19881989: 26 April 1989 to 28 October 19891990: 14 April 1990 to 6 October 19901991: 5 March 1991 to 21 September 19911992: 18 March 1992 to 6 September 19921993: 12 April 1993 to 28 October 19931994: 4 April 1994 to 1 November 19941995: 16 January 1995 to 27 November 19951996: 21 April 1996 to 25 December 19961997: 1 February 1997 to 8 November 19971998: 29 March 1998 to 4 December 19981999: 22 April 1999 to 28 August 19992000: 11 January 2000 to 12 October 20002001: 20 April 2001 to 26 November 20012002: 16 April 2002 to 18 September 20022003: 2 February 2003 to 29 October 20032004: 28 February 2004 to 16 October 20042005: 9 April 2005 to 4 October 20052006: 17 April 2006 to 20 October 20062007: 28 March 2007 to 20 November 20072008: 10 May 2008 to 12 October 20082009: 17 March 2009 to 5 October 20092010: 12 May 2010 to 19 November 20102011: 22 March 2011 to 29 August 20112012: 12 April 2012 to 27 May 20122013: 19 May 2013 to 28 October 20132014: 30 March 2014 to 10 November 20142015: 15 April 2015 to 14 December 20152016: 29 March 2016 to 29 October 20162017: 31 January 2017 to 3 November 20172018: 23 April 2018 to 13 October 20182019: 24 January 2019 to 28 September 20192020: 4 February 2020 to 8 November 20202021: 6 February 2021 to 12 October 20212022: 12 April 2022 to 5 December 20222023: 28 January 2023 to 12 October 20232024: 13 March 2024 to 18 September 20242025: 3 February 2025 to 5 October 20252026: 31 March 2026 to 13 June 202619521962197419841994200420142024JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Roberts 1 W meeting 10 mm (0.39 in).
First to last qualifying date each year at Roberts 1 W
YearFirst dateLast date
19521952-04-081952-11-24
19531953-04-071953-12-21
19541954-03-111954-10-24
19551955-02-091955-12-24
19561956-04-011956-08-18
19571957-03-131957-11-01
19581958-01-181958-07-23
19591959-04-161959-11-12
19601960-04-221960-10-09
19611961-04-231961-11-15
19621962-01-081962-11-22
19631963-03-161963-09-21
19641964-04-061964-06-18
19651965-01-281965-09-16
19681968-03-181968-09-20
19691969-01-061969-11-16
19701970-04-261970-10-12
19711971-03-291971-10-27
19721972-01-011972-12-02
19731973-03-231973-11-01
19741974-03-021974-10-31
19751975-01-181975-12-10
19761976-04-161976-09-07
19771977-03-251977-11-19
19781978-02-281978-11-10
19791979-05-091979-10-16
19801980-03-251980-10-15
19811981-03-271981-10-24
19821982-03-191982-12-01
19831983-03-181983-10-15
19841984-04-251984-08-01
19851985-05-101985-09-27
19861986-04-261986-11-06
19871987-05-161987-08-25
19881988-05-011988-10-17
19891989-04-261989-10-28
19901990-04-141990-10-06
19911991-03-051991-09-21
19921992-03-181992-09-06
19931993-04-121993-10-28
19941994-04-041994-11-01
19951995-01-161995-11-27
19961996-04-211996-12-25
19971997-02-011997-11-08
19981998-03-291998-12-04
19991999-04-221999-08-28
20002000-01-112000-10-12
20012001-04-202001-11-26
20022002-04-162002-09-18
20032003-02-022003-10-29
20042004-02-282004-10-16
20052005-04-092005-10-04
20062006-04-172006-10-20
20072007-03-282007-11-20
20082008-05-102008-10-12
20092009-03-172009-10-05
20102010-05-122010-11-19
20112011-03-222011-08-29
20122012-04-122012-05-27
20132013-05-192013-10-28
20142014-03-302014-11-10
20152015-04-152015-12-14
20162016-03-292016-10-29
20172017-01-312017-11-03
20182018-04-232018-10-13
20192019-01-242019-09-28
20202020-02-042020-11-08
20212021-02-062021-10-12
20222022-04-122022-12-05
20232023-01-282023-10-12
20242024-03-132024-09-18
20252025-02-032025-10-05
20262026-03-312026-06-13

Every Fixed Threshold

Fixed thresholds at Roberts 1 W
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain732119753
25 mm (0.98 in): Days with 25 mm or more rain61619741
50 mm (1.97 in): Days with 50 mm or more rain13220231
10 cm (3.9 in): Days with 10 cm or more snowfall131219557
25 cm (9.8 in): Days with 25 cm or more snowfall7219551
50 cm (19.7 in): Days with 50 cm or more snowfall1119551

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1952.

Download the Data

  • Data for Roberts 1 W 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 (2026-10-12).