Rockdale Threshold Days by Year (USC00307195)

6 fixed thresholds counted per year at Rockdale (USC00307195): 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 56 years, most in 1972 with 48.
Rockdale: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 1972 with 13.
Rockdale: days with 50 mm (1.97 in) or more of precipitation in 30 years, most in 2002 with 4.
Rockdale: days with 10 cm (3.9 in) or more of snowfall in 27 years, most in 1963 with 7.
6 fixed thresholds have at least one qualifying day at Rockdale.

Days with 10 mm (0.39 in) or more of precipitation

56 years with a qualifying day

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 48 in 1972.

Days with 10 mm (0.39 in) or more of precipitation per year at Rockdale
Year	Days	Decade average
1944	33	35.2
1945	39	35.2
1946	35	35.2
1947	36	35.2
1948	36	35.2
1949	32	35.2
1950	34	29.4
1951	29	29.4
1952	30	29.4
1953	26	29.4
1954	35	29.4
1955	28	29.4
1956	25	29.4
1957	27	29.4
1958	35	29.4
1959	25	29.4
1960	29	28.3
1961	30	28.3
1962	21	28.3
1963	27	28.3
1964	25	28.3
1967	33	28.3
1968	34	28.3
1969	27	28.3
1970	32	36.3
1971	29	36.3
1972	48	36.3
1973	32	36.3
1974	35	36.3
1975	38	36.3
1979	40	36.3
1980	33	31.1
1981	32	31.1
1982	25	31.1
1983	34	31.1
1984	36	31.1
1985	24	31.1
1986	32	31.1
1987	35	31.1
1988	31	31.1
1989	29	31.1
1990	38	32.6
1991	31	32.6
1993	31	32.6
1994	38	32.6
1995	29	32.6
1996	45	32.6
1997	25	32.6
1998	32	32.6
1999	24	32.6
2001	25	34.5
2002	29	34.5
2003	34	34.5
2004	37	34.5
2005	43	34.5
2006	39	34.5

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
Year	First date	Last date
1944	1944-02-12	1944-12-28
1945	1945-01-01	1945-12-20
1946	1946-02-20	1946-12-28
1947	1947-01-02	1947-11-12
1948	1948-01-02	1948-12-31
1949	1949-01-01	1949-12-24
1950	1950-01-06	1950-12-11
1951	1951-01-04	1951-12-19
1952	1952-01-18	1952-12-22
1953	1953-01-11	1953-12-07
1954	1954-01-21	1954-12-30
1955	1955-02-07	1955-11-17
1956	1956-02-07	1956-12-29
1957	1957-02-27	1957-12-27
1958	1958-01-15	1958-11-29
1959	1959-01-16	1959-12-29
1960	1960-01-03	1960-11-30
1961	1961-01-01	1961-11-25
1962	1962-02-27	1962-12-06
1963	1963-01-13	1963-12-24
1964	1964-01-14	1964-12-28
1967	1967-01-28	1967-12-29
1968	1968-03-13	1968-12-29
1969	1969-01-19	1969-12-27
1970	1970-02-03	1970-12-17
1971	1971-02-08	1971-12-31
1972	1972-02-04	1972-12-22
1973	1973-01-04	1973-12-27
1974	1974-01-11	1974-12-17
1975	1975-01-13	1975-12-26
1979	1979-01-02	1979-11-27
1980	1980-03-08	1980-12-16
1981	1981-02-02	1981-12-23
1982	1982-02-01	1982-12-16
1983	1983-01-16	1983-12-14
1984	1984-01-11	1984-12-22
1985	1985-03-05	1985-12-14
1986	1986-01-20	1986-12-25
1987	1987-01-03	1987-12-20
1988	1988-01-26	1988-12-25
1989	1989-01-06	1989-11-17
1990	1990-01-21	1990-12-28
1991	1991-01-12	1991-12-03
1993	1993-02-13	1993-12-22
1994	1994-01-05	1994-12-06
1995	1995-01-01	1995-12-19
1996	1996-01-02	1996-12-30
1997	1997-02-05	1997-12-30
1998	1998-01-16	1998-12-22
1999	1999-01-09	1999-12-15
2001	2001-01-31	2001-12-18
2002	2002-02-01	2002-12-26
2003	2003-01-04	2003-12-19
2004	2004-01-28	2004-12-24
2005	2005-01-04	2005-12-26
2006	2006-01-03	2006-12-26

Every Fixed Threshold

Fixed thresholds at Rockdale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	56	48	1972	39
25 mm (0.98 in): Days with 25 mm or more rain	56	13	1972	10
50 mm (1.97 in): Days with 50 mm or more rain	30	4	2002	4
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1998	1
10 cm (3.9 in): Days with 10 cm or more snowfall	27	7	1963	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	1	1948	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1944.

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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Rockdale Threshold Days by Year (USC00307195)

Key Facts for Rockdale Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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