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Built 2026-10-19 (19 October 2026)

Rockdale Threshold Days by Year (USC00417685)

5 fixed thresholds counted per year at Rockdale (USC00417685): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rockdale Thresholds

  • Rockdale: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1981 with 44.
  • Rockdale: days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 1968 with 20.
  • Rockdale: days with 50 mm (1.97 in) or more of precipitation in 39 years, most in 2001 with 8.
  • Rockdale: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1968 with 2.
  • 5 fixed thresholds have at least one qualifying day at Rockdale.
42 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rockdale Days per year at Rockdale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1981. 02040601964: 271965: 281966: 261967: 251968: 391969: 241970: 281971: 261972: 211973: 381974: 381975: 241976: 371977: 211978: 281979: 331980: 311981: 441982: 321983: 321984: 261985: 231986: 321987: 221988: 141989: 211990: 231991: 441993: 371994: 251995: 231997: 272000: 252001: 352002: 362003: 162004: 352005: 152006: 282007: 362008: 162010: 20196419691974197919841989199520032008
Days per year at Rockdale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 44 in 1981.
Days with 10 mm (0.39 in) or more of precipitation per year at Rockdale
YearDaysDecade average
19642728.2
19652828.2
19662628.2
19672528.2
19683928.2
19692428.2
19702829.4
19712629.4
19722129.4
19733829.4
19743829.4
19752429.4
19763729.4
19772129.4
19782829.4
19793329.4
19803127.7
19814427.7
19823227.7
19833227.7
19842627.7
19852327.7
19863227.7
19872227.7
19881427.7
19892127.7
19902329.8
19914429.8
19933729.8
19942529.8
19952329.8
19972729.8
20002526.9
20013526.9
20023626.9
20031626.9
20043526.9
20051526.9
20062826.9
20073626.9
20081626.9
20102020
First to last qualifying date each year at Rockdale For each year, a bar from the first to the last day at Rockdale meeting 10 mm (0.39 in). 1964: 16 January 1964 to 10 December 19641965: 3 January 1965 to 19 December 19651966: 10 February 1966 to 31 December 19661967: 7 February 1967 to 17 December 19671968: 5 January 1968 to 22 December 19681969: 16 January 1969 to 30 December 19691970: 5 January 1970 to 24 October 19701971: 26 February 1971 to 15 December 19711972: 30 January 1972 to 25 November 19721973: 2 January 1973 to 19 December 19731974: 19 January 1974 to 11 December 19741975: 12 January 1975 to 3 November 19751976: 20 January 1976 to 11 December 19761977: 31 January 1977 to 9 November 19771978: 11 January 1978 to 31 December 19781979: 1 January 1979 to 29 December 19791980: 21 January 1980 to 8 December 19801981: 19 January 1981 to 31 December 19811982: 26 February 1982 to 11 December 19821983: 1 January 1983 to 3 December 19831984: 9 January 1984 to 16 December 19841985: 3 January 1985 to 11 December 19851986: 4 February 1986 to 23 December 19861987: 20 February 1987 to 19 December 19871988: 18 March 1988 to 10 December 19881989: 12 January 1989 to 22 November 19891990: 29 January 1990 to 28 December 19901991: 3 January 1991 to 27 December 19911993: 10 January 1993 to 22 December 19931994: 11 February 1994 to 29 December 19941995: 13 January 1995 to 18 November 19951997: 7 January 1997 to 23 December 19972000: 7 January 2000 to 18 November 20002001: 10 January 2001 to 15 December 20012002: 5 January 2002 to 30 December 20022003: 11 January 2003 to 27 December 20032004: 16 January 2004 to 23 November 20042005: 12 January 2005 to 1 November 20052006: 29 January 2006 to 30 December 20062007: 4 January 2007 to 15 December 20072008: 13 February 2008 to 12 November 20082010: 29 January 2010 to 25 December 20101964197019761982198819952004JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rockdale meeting 10 mm (0.39 in).
First to last qualifying date each year at Rockdale
YearFirst dateLast date
19641964-01-161964-12-10
19651965-01-031965-12-19
19661966-02-101966-12-31
19671967-02-071967-12-17
19681968-01-051968-12-22
19691969-01-161969-12-30
19701970-01-051970-10-24
19711971-02-261971-12-15
19721972-01-301972-11-25
19731973-01-021973-12-19
19741974-01-191974-12-11
19751975-01-121975-11-03
19761976-01-201976-12-11
19771977-01-311977-11-09
19781978-01-111978-12-31
19791979-01-011979-12-29
19801980-01-211980-12-08
19811981-01-191981-12-31
19821982-02-261982-12-11
19831983-01-011983-12-03
19841984-01-091984-12-16
19851985-01-031985-12-11
19861986-02-041986-12-23
19871987-02-201987-12-19
19881988-03-181988-12-10
19891989-01-121989-11-22
19901990-01-291990-12-28
19911991-01-031991-12-27
19931993-01-101993-12-22
19941994-02-111994-12-29
19951995-01-131995-11-18
19971997-01-071997-12-23
20002000-01-072000-11-18
20012001-01-102001-12-15
20022002-01-052002-12-30
20032003-01-112003-12-27
20042004-01-162004-11-23
20052005-01-122005-11-01
20062006-01-292006-12-30
20072007-01-042007-12-15
20082008-02-132008-11-12
20102010-01-292010-12-25

Every Fixed Threshold

Fixed thresholds at Rockdale
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4244198120
25 mm (0.98 in): Days with 25 mm or more rain422019686
50 mm (1.97 in): Days with 50 mm or more rain39820011
100 mm (3.94 in): Days with 100 mm or more rain15219681
10 cm (3.9 in): Days with 10 cm or more snowfall1119851

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1964.

Download the Data

  • Data for Rockdale 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).