Rockdale Weather Records (USC00417685)

Record envelope, standing records and threshold days for Rockdale (USC00417685), Texas, United States, with 53 years of record.

Key Facts for Rockdale

Rockdale (USC00417685) is a weather station in Texas, United States at 30.64 latitude and -97.04 longitude, 161 m (528 ft) above sea level.
The station reports from 1963 to 2015, 53 years of record.
1,324 records set at Rockdale still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Rockdale set a daily record precipitation of 76.5 mm (3.0 in) on 17 June 2015.

About the Station

Location: Texas, United States, 30.64 latitude, -97.04 longitude.
Elevation: 161 m (528 ft).
Period of record: 1963 to 2015, 53 years.
Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record

The band shows the record high and record low for each calendar day at Rockdale. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.

Daily record high and record low at Rockdale, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	29.4 C (84.9 F)	-6.7 C (19.9 F)	n/a	n/a
Mar	30.0 C (86.0 F)	-8.9 C (16.0 F)	n/a	n/a
Apr	31.1 C (88.0 F)	-0.6 C (30.9 F)	n/a	n/a
May	33.9 C (93.0 F)	6.1 C (43.0 F)	n/a	n/a
Jun	40.6 C (105.1 F)	11.7 C (53.1 F)	n/a	n/a
Jul	41.1 C (106.0 F)	20.0 C (68.0 F)	n/a	n/a
Aug	40.0 C (104.0 F)	14.4 C (57.9 F)	n/a	n/a
Sep	37.8 C (100.0 F)	11.7 C (53.1 F)	n/a	n/a
Oct	34.4 C (93.9 F)	-2.8 C (27.0 F)	n/a	n/a
Nov	31.1 C (88.0 F)	-2.2 C (28.0 F)	n/a	n/a
Dec	25.6 C (78.1 F)	-8.3 C (17.1 F)	n/a	n/a

Which Years Hold Standing Records

1,324 standing records

1,324 records at Rockdale still stand. 1979 holds the most, with 627.

Wettest Day of Each Month

Jul: 175.3 mm (6.9 in)

The wettest day on record for each calendar month at Rockdale. The most was 175.3 mm (6.9 in) on 27 July 1979.

Record daily precipitation for each month at Rockdale
Month	Record daily precipitation (mm)	Date
Jan	85.6 mm (3.4 in)	10 January 1991
Feb	130.6 mm (5.1 in)	4 February 2012
Mar	78.0 mm (3.1 in)	28 March 1980
Apr	91.4 mm (3.6 in)	18 April 1976
May	110.5 mm (4.4 in)	16 May 1970
Jun	96.5 mm (3.8 in)	21 June 1968
Jul	175.3 mm (6.9 in)	27 July 1979
Aug	121.9 mm (4.8 in)	27 August 1969
Sep	159.0 mm (6.3 in)	29 September 2013
Oct	127.8 mm (5.0 in)	17 October 1994
Nov	122.4 mm (4.8 in)	15 November 2001
Dec	149.9 mm (5.9 in)	21 December 1991

Period of Record Coverage

1965 to 1980

6 years of record at Rockdale, 1965 to 1980. 6 years have data for under 90 percent of days and are left out of rankings: 1965, 1969, 1970, 1972, 1979, 1980.

Latest Records

Latest records at Rockdale
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 June 2015	Rockdale, US	daily rain	76.5 mm (3.0 in)	13.8 mm (0.5 in)	42 years	25 of 100 (Routine)
26 May 2015	Rockdale, US	daily rain	73.2 mm (2.9 in)	13.8 mm (0.5 in)	38 years	22 of 100 (Routine)
28 May 2014	Rockdale, US	daily rain	59.2 mm (2.3 in)	32.0 mm (1.3 in)	35 years	30 of 100 (Routine)
27 May 2014	Rockdale, US	daily rain	85.1 mm (3.4 in)	68.1 mm (2.7 in)	7 years	40 of 100 (Notable)
15 April 2014	Rockdale, US	daily rain (Tie)	10.4 mm (0.4 in)	tie	40 years	4 of 100 (Routine)
9 March 2014	Rockdale, US	daily rain	24.1 mm (0.9 in)	8.4 mm (0.33 in)	20 years	17 of 100 (Routine)
31 October 2013	Rockdale, US	daily rain	61.7 mm (2.4 in)	9.4 mm (0.37 in)	34 years	19 of 100 (Routine)
27 October 2013	Rockdale, US	daily rain	28.4 mm (1.1 in)	5.0 mm (0.20 in)	40 years	19 of 100 (Routine)
29 September 2013	Rockdale, US	monthly rain	159.0 mm (6.3 in)	34.3 mm (1.4 in)	39 years	44 of 100 (Notable)
28 September 2013	Rockdale, US	daily rain	26.7 mm (1.1 in)	0.8 mm (0.03 in)	48 years	19 of 100 (Routine)
10 March 2013	Rockdale, US	daily rain	48.8 mm (1.9 in)	17.1 mm (0.7 in)	0 years	18 of 100 (Routine)
9 January 2013	Rockdale, US	daily rain	64.0 mm (2.5 in)	22.1 mm (0.9 in)	45 years	36 of 100 (Notable)
14 October 2012	Rockdale, US	daily rain	49.0 mm (1.9 in)	17.2 mm (0.7 in)	39 years	24 of 100 (Routine)
30 September 2012	Rockdale, US	daily rain	57.7 mm (2.3 in)	15.5 mm (0.6 in)	27 years	21 of 100 (Routine)
11 July 2012	Rockdale, US	daily rain	42.7 mm (1.7 in)	26.4 mm (1.0 in)	37 years	28 of 100 (Routine)
13 June 2012	Rockdale, US	daily rain	38.1 mm (1.5 in)	1.8 mm (0.07 in)	13 years	9 of 100 (Routine)
20 March 2012	Rockdale, US	daily rain	73.7 mm (2.9 in)	19.1 mm (0.8 in)	19 years	25 of 100 (Routine)
11 March 2012	Rockdale, US	daily rain	45.7 mm (1.8 in)	0.5 mm (0.02 in)	44 years	18 of 100 (Routine)
10 March 2012	Rockdale, US	daily rain	31.7 mm (1.2 in)	20.3 mm (0.8 in)	25 years	29 of 100 (Routine)
18 February 2012	Rockdale, US	daily rain	38.4 mm (1.5 in)	28.5 mm (1.1 in)	44 years	42 of 100 (Notable)

Extremes by Year

1963 to 2015

Yearly extremes at Rockdale: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	41.1 C (106.0 F)	1980	35.6 C (96.0 F)	6
Coldest night (TNn)	-8.9 C (16.0 F)	1980	3.6 C (38.5 F)	6
Wettest day (Rx1day)	175.3 mm (6.9 in)	1979	79.2 mm (3.1 in)	53
Wettest five days (Rx5day)	266.8 mm (10.5 in)	1991	123.9 mm (4.9 in)	52
Longest dry spell (CDD)	72 days	1963	30 days	53

Hottest day (TXx)

The hottest day of the year at Rockdale, 1963 to 2015. The record is 41.1 C (106.0 F) in 1980, marked on the chart; the median year is 35.6 C (96.0 F).

Hottest day (TXx) at Rockdale by year
Year	Hottest day (TXx)
1963	n/a
1964	n/a
1965	34.4 C (93.9 F)
1966	n/a
1967	n/a
1968	n/a
1969	31.1 C (88.0 F)
1970	37.8 C (100.0 F)
1971	n/a
1972	29.4 C (84.9 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	36.7 C (98.1 F)
1980	41.1 C (106.0 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a

Coldest night (TNn)

The coldest night of the year at Rockdale, 1963 to 2015. The record is -8.9 C (16.0 F) in 1980, marked on the chart; the median year is 3.6 C (38.5 F).

Coldest night (TNn) at Rockdale by year
Year	Coldest night (TNn)
1963	n/a
1964	n/a
1965	16.7 C (62.1 F)
1966	n/a
1967	n/a
1968	n/a
1969	12.8 C (55.0 F)
1970	14.4 C (57.9 F)
1971	n/a
1972	-5.6 C (21.9 F)
1973	n/a
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	-8.3 C (17.1 F)
1980	-8.9 C (16.0 F)
1981	n/a
1982	n/a
1983	n/a
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a
2010	n/a
2011	n/a
2012	n/a
2013	n/a
2014	n/a
2015	n/a

Wettest day (Rx1day)

The wettest day of the year at Rockdale, 1963 to 2015. The record is 175.3 mm (6.9 in) in 1979, marked on the chart; the median year is 79.2 mm (3.1 in).

Wettest day (Rx1day) at Rockdale by year
Year	Wettest day (Rx1day)
1963	41.9 mm (1.6 in)
1964	79.2 mm (3.1 in)
1965	99.1 mm (3.9 in)
1966	76.2 mm (3.0 in)
1967	70.6 mm (2.8 in)
1968	108.2 mm (4.3 in)
1969	121.9 mm (4.8 in)
1970	110.5 mm (4.4 in)
1971	70.4 mm (2.8 in)
1972	81.5 mm (3.2 in)
1973	54.1 mm (2.1 in)
1974	124.7 mm (4.9 in)
1975	103.6 mm (4.1 in)
1976	100.6 mm (4.0 in)
1977	46.0 mm (1.8 in)
1978	73.2 mm (2.9 in)
1979	175.3 mm (6.9 in)
1980	78.0 mm (3.1 in)
1981	88.1 mm (3.5 in)
1982	69.3 mm (2.7 in)
1983	104.6 mm (4.1 in)
1984	113.5 mm (4.5 in)
1985	48.3 mm (1.9 in)
1986	54.4 mm (2.1 in)
1987	70.6 mm (2.8 in)
1988	51.6 mm (2.0 in)
1989	51.6 mm (2.0 in)
1990	62.5 mm (2.5 in)
1991	149.9 mm (5.9 in)
1992	96.5 mm (3.8 in)
1993	77.5 mm (3.1 in)
1994	127.8 mm (5.0 in)
1995	108.0 mm (4.3 in)
1996	34.3 mm (1.4 in)
1997	51.8 mm (2.0 in)
1998	124.0 mm (4.9 in)
1999	64.8 mm (2.6 in)
2000	105.4 mm (4.1 in)
2001	122.4 mm (4.8 in)
2002	94.2 mm (3.7 in)
2003	80.0 mm (3.1 in)
2004	78.2 mm (3.1 in)
2005	61.7 mm (2.4 in)
2006	74.9 mm (2.9 in)
2007	115.1 mm (4.5 in)
2008	51.1 mm (2.0 in)
2009	51.6 mm (2.0 in)
2010	48.3 mm (1.9 in)
2011	101.6 mm (4.0 in)
2012	130.6 mm (5.1 in)
2013	159.0 mm (6.3 in)
2014	85.1 mm (3.4 in)
2015	76.5 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Rockdale, 1963 to 2015. The record is 266.8 mm (10.5 in) in 1991, marked on the chart; the median year is 123.9 mm (4.9 in).

Wettest five days (Rx5day) at Rockdale by year
Year	Wettest five days (Rx5day)
1963	64.8 mm (2.6 in)
1964	133.8 mm (5.3 in)
1965	108.0 mm (4.3 in)
1966	124.9 mm (4.9 in)
1967	96.6 mm (3.8 in)
1968	212.6 mm (8.4 in)
1969	145.5 mm (5.7 in)
1970	131.1 mm (5.2 in)
1971	96.4 mm (3.8 in)
1972	147.8 mm (5.8 in)
1973	172.7 mm (6.8 in)
1974	221.7 mm (8.7 in)
1975	122.1 mm (4.8 in)
1976	184.7 mm (7.3 in)
1977	104.9 mm (4.1 in)
1978	83.6 mm (3.3 in)
1979	175.3 mm (6.9 in)
1980	103.6 mm (4.1 in)
1981	193.9 mm (7.6 in)
1982	120.1 mm (4.7 in)
1983	156.0 mm (6.1 in)
1984	154.6 mm (6.1 in)
1985	92.1 mm (3.6 in)
1986	86.9 mm (3.4 in)
1987	190.2 mm (7.5 in)
1988	95.2 mm (3.7 in)
1989	83.4 mm (3.3 in)
1990	89.1 mm (3.5 in)
1991	266.8 mm (10.5 in)
1992	130.7 mm (5.1 in)
1993	106.6 mm (4.2 in)
1994	164.8 mm (6.5 in)
1995	128.3 mm (5.1 in)
1996	75.9 mm (3.0 in)
1997	79.0 mm (3.1 in)
1998	144.3 mm (5.7 in)
1999	77.7 mm (3.1 in)
2000	161.5 mm (6.4 in)
2001	147.8 mm (5.8 in)
2002	122.9 mm (4.8 in)
2003	97.5 mm (3.8 in)
2004	126.9 mm (5.0 in)
2005	103.1 mm (4.1 in)
2006	77.0 mm (3.0 in)
2007	200.9 mm (7.9 in)
2008	78.0 mm (3.1 in)
2009	63.3 mm (2.5 in)
2010	72.9 mm (2.9 in)
2011	n/a
2012	77.6 mm (3.1 in)
2013	189.8 mm (7.5 in)
2014	145.3 mm (5.7 in)
2015	169.3 mm (6.7 in)

Longest dry spell (CDD)

The longest dry spell of the year at Rockdale, 1963 to 2015. The record is 72 days in 1963, marked on the chart; the median year is 30 days.

Longest dry spell (CDD) at Rockdale by year
Year	Longest dry spell (CDD)
1963	72 days
1964	23 days
1965	26 days
1966	24 days
1967	26 days
1968	22 days
1969	43 days
1970	31 days
1971	31 days
1972	38 days
1973	28 days
1974	23 days
1975	30 days
1976	25 days
1977	32 days
1978	32 days
1979	25 days
1980	37 days
1981	20 days
1982	33 days
1983	21 days
1984	28 days
1985	32 days
1986	48 days
1987	33 days
1988	27 days
1989	26 days
1990	48 days
1991	37 days
1992	47 days
1993	68 days
1994	45 days
1995	29 days
1996	33 days
1997	25 days
1998	32 days
1999	43 days
2000	41 days
2001	35 days
2002	26 days
2003	30 days
2004	29 days
2005	36 days
2006	22 days
2007	16 days
2008	45 days
2009	22 days
2010	30 days
2011	1 day
2012	2 days
2013	16 days
2014	41 days
2015	18 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

42 years, 1964 to 2010

A day with at least 82.1 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 178.3 mm (7.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Rockdale: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	82.1 mm (3.2 in)
5 years	109.5 mm (4.3 in)
10 years	127.0 mm (5.0 in)
25 years	148.3 mm (5.8 in)
50 years	163.6 mm (6.4 in)	Longer than the 42 years of record
100 years	178.3 mm (7.0 in)	Longer than the 42 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 42 years of values from 1964 to 2010.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 175.3 mm (6.9 in) in 1979; 149.9 mm (5.9 in) in 1991; 127.8 mm (5.0 in) in 1994.

Download the Data

Data for Rockdale standing records by year: CSV or JSON. Field meanings are on the data page.
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

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