Grapevine Dam Weather Records (USC00413691)

Record envelope, standing records and threshold days for Grapevine Dam (USC00413691), Texas, United States, with 130 years of record.

Key Facts for Grapevine Dam

Grapevine Dam (USC00413691) is a weather station in Texas, United States at 32.95 latitude and -97.06 longitude, 178 m (585 ft) above sea level.
The station reports from 1897 to 2026, 130 years of record.
1,464 records set at Grapevine Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Grapevine Dam set a daily record precipitation of 46.2 mm (1.8 in) on 5 March 2026.

About the Station

Location: Texas, United States, 32.95 latitude, -97.06 longitude.
Elevation: 178 m (585 ft).
Period of record: 1897 to 2026, 130 years.
Eligible elements: tmax, tmin, 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 Grapevine Dam. 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 Grapevine Dam, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	35.0 C (95.0 F)	-18.3 C (-0.9 F)	n/a	n/a
Feb	35.0 C (95.0 F)	-16.1 C (3.0 F)	n/a	n/a
Mar	37.8 C (100.0 F)	-10.6 C (12.9 F)	n/a	n/a
Apr	38.3 C (100.9 F)	-1.7 C (28.9 F)	n/a	n/a
May	40.6 C (105.1 F)	0.6 C (33.1 F)	n/a	n/a
Jun	42.8 C (109.0 F)	8.3 C (46.9 F)	n/a	n/a
Jul	44.4 C (111.9 F)	9.4 C (48.9 F)	n/a	n/a
Aug	46.1 C (115.0 F)	12.2 C (54.0 F)	n/a	n/a
Sep	42.8 C (109.0 F)	3.3 C (37.9 F)	n/a	n/a
Oct	38.9 C (102.0 F)	-5.6 C (21.9 F)	n/a	n/a
Nov	33.9 C (93.0 F)	-8.3 C (17.1 F)	n/a	n/a
Dec	32.8 C (91.0 F)	-18.3 C (-0.9 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Grapevine Dam still stand. 1911 holds the most, with 48.

Standing records at Grapevine Dam by the year they were set
Year set	Standing records
1897	6
1901	22
1902	17
1903	26
1904	20
1905	21
1906	18
1907	34
1908	20
1909	32
1910	18
1911	48
1912	20
1913	20
1914	9
1915	24
1916	23
1917	23
1918	2
1953	8
1954	21
1955	19
1956	19
1957	19
1958	9
1959	19
1960	12
1961	13
1962	18
1963	13
1964	15
1965	18
1966	18
1967	16
1968	3
1969	11
1970	18
1971	18
1972	19
1973	11
1974	28
1975	15
1976	18
1977	8
1978	10
1979	14
1980	24
1981	9
1982	9
1983	28
1984	17
1985	20
1986	14
1987	12
1988	4
1989	31
1990	16
1991	19
1992	16
1993	9
1994	10
1995	19
1996	30
1997	12
1998	22
1999	7
2000	8
2001	5
2002	9
2003	9
2004	13
2005	10
2006	29
2007	5
2008	13
2009	6
2010	15
2011	45
2012	25
2013	19
2014	18
2015	7
2016	14
2017	11
2018	22
2019	14
2020	6
2022	18
2023	2

All-Time Record Progression

6 new records

6 all-time records were set at Grapevine Dam between 16 January 1964 and 2 August 2004. Each dot is a new record.

When Grapevine Dam set new all-time records
Date	Kind	Detail
1964-01-16	Record daily snowfall	Record daily snowfall 22.9 cm (9.0 in)
1964-09-21	Record daily precipitation	Record daily precipitation 219.5 mm (8.6 in)
1976-11-14	Record snow depth	Record snow depth 12.7 cm (5.0 in)
1983-12-25	Record low maximum temperature	Record low maximum temperature -10.6 C (12.9 F)
1985-02-01	Record snow depth	Record snow depth 17.8 cm (7.0 in)
2004-08-02	Record high minimum temperature	Record high minimum temperature 32.8 C (91.0 F)

Wettest Day of Each Month

Sep: 219.5 mm (8.6 in)

The wettest day on record for each calendar month at Grapevine Dam. The most was 219.5 mm (8.6 in) on 21 September 1964.

Record daily precipitation for each month at Grapevine Dam
Month	Record daily precipitation (mm)	Date
Jan	99.8 mm (3.9 in)	31 January 2002
Feb	99.6 mm (3.9 in)	25 February 2006
Mar	123.7 mm (4.9 in)	27 March 1977
Apr	100.6 mm (4.0 in)	30 April 1966
May	164.3 mm (6.5 in)	17 May 1989
Jun	210.8 mm (8.3 in)	14 June 1989
Jul	190.5 mm (7.5 in)	29 July 2004
Aug	128.5 mm (5.1 in)	18 August 1915
Sep	219.5 mm (8.6 in)	21 September 1964
Oct	136.1 mm (5.4 in)	24 October 1949
Nov	120.7 mm (4.8 in)	27 November 2015
Dec	93.2 mm (3.7 in)	2 December 1913

Period of Record Coverage

1897 to 2023

90 years of record at Grapevine Dam, 1897 to 2023. 23 years have data for under 90 percent of days and are left out of rankings: 1897, 1901, 1904, 1905, 1906, 1909, 1910, 1911 and others.

Days with data per year at Grapevine Dam
Year	Days with data	Share of year	Complete
1897	85	23%	No
1901	285	78%	No
1902	341	93%	Yes
1903	341	93%	Yes
1904	304	83%	No
1905	277	76%	No
1906	311	85%	No
1907	331	91%	Yes
1908	336	92%	Yes
1909	267	73%	No
1910	320	88%	No
1911	328	90%	No
1912	334	91%	Yes
1913	317	87%	No
1914	332	91%	Yes
1915	340	93%	Yes
1916	337	92%	Yes
1917	335	92%	Yes
1918	23	6%	No
1953	184	50%	No
1954	364	100%	Yes
1955	364	100%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	361	99%	Yes
1959	365	100%	Yes
1960	365	100%	Yes
1961	365	100%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	366	100%	Yes
1965	363	99%	Yes
1966	365	100%	Yes
1967	365	100%	Yes
1968	366	100%	Yes
1969	365	100%	Yes
1970	364	100%	Yes
1971	365	100%	Yes
1972	364	99%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	359	98%	Yes
1976	363	99%	Yes
1977	365	100%	Yes
1978	364	100%	Yes
1979	332	91%	Yes
1980	365	100%	Yes
1981	274	75%	No
1982	359	98%	Yes
1983	364	100%	Yes
1984	364	99%	Yes
1985	365	100%	Yes
1986	365	100%	Yes
1987	364	100%	Yes
1988	365	100%	Yes
1989	365	100%	Yes
1990	362	99%	Yes
1991	357	98%	Yes
1992	361	99%	Yes
1993	363	99%	Yes
1994	362	99%	Yes
1995	330	90%	Yes
1996	362	99%	Yes
1997	363	99%	Yes
1998	363	99%	Yes
1999	361	99%	Yes
2000	327	89%	No
2001	360	99%	Yes
2002	358	98%	Yes
2003	317	87%	No
2004	332	91%	Yes
2005	339	93%	Yes
2006	315	86%	No
2007	252	69%	No
2008	287	78%	No
2009	341	93%	Yes
2010	321	88%	No
2011	322	88%	No
2012	360	98%	Yes
2013	336	92%	Yes
2014	359	98%	Yes
2015	351	96%	Yes
2016	346	95%	Yes
2017	350	96%	Yes
2018	362	99%	Yes
2019	342	94%	Yes
2020	195	53%	No
2021	12	3%	No
2022	186	51%	No
2023	12	3%	No

Latest Records

Latest records at Grapevine Dam
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
5 March 2026	Grapevine Dam, US	daily rain	46.2 mm (1.8 in)	22.3 mm (0.9 in)	21 years	30 of 100 (Routine)
15 February 2026	Grapevine Dam, US	daily rain	39.4 mm (1.6 in)	8.4 mm (0.33 in)	123 years	46 of 100 (Notable)
24 January 2026	Grapevine Dam, US	daily rain	16.8 mm (0.7 in)	11.0 mm (0.4 in)	3 years	18 of 100 (Routine)
21 November 2025	Grapevine Dam, US	daily rain	46.7 mm (1.8 in)	13.7 mm (0.5 in)	108 years	48 of 100 (Notable)
20 November 2025	Grapevine Dam, US	daily rain	36.8 mm (1.4 in)	7.1 mm (0.28 in)	31 years	23 of 100 (Routine)
1 September 2025	Grapevine Dam, US	daily rain	148.1 mm (5.8 in)	56.7 mm (2.2 in)	31 years	44 of 100 (Notable)
9 June 2025	Grapevine Dam, US	daily rain	58.4 mm (2.3 in)	11.9 mm (0.5 in)	12 years	19 of 100 (Routine)
30 January 2025	Grapevine Dam, US	daily rain	58.7 mm (2.3 in)	23.1 mm (0.9 in)	56 years	43 of 100 (Notable)
10 January 2025	Grapevine Dam, US	daily rain	43.2 mm (1.7 in)	14.5 mm (0.6 in)	112 years	51 of 100 (Notable)
26 December 2024	Grapevine Dam, US	daily rain	72.4 mm (2.9 in)	22.6 mm (0.9 in)	24 years	35 of 100 (Notable)
17 December 2024	Grapevine Dam, US	daily rain	21.3 mm (0.8 in)	0.2 mm (0.01 in)	23 years	16 of 100 (Routine)
28 May 2024	Grapevine Dam, US	daily rain	68.6 mm (2.7 in)	22.4 mm (0.9 in)	121 years	52 of 100 (Notable)
8 March 2024	Grapevine Dam, US	daily rain	51.8 mm (2.0 in)	34.8 mm (1.4 in)	43 years	45 of 100 (Notable)
22 December 2023	Grapevine Dam, US	daily rain	35.1 mm (1.4 in)	18.3 mm (0.7 in)	9 years	27 of 100 (Routine)
30 October 2023	Grapevine Dam, US	daily rain	83.8 mm (3.3 in)	55.9 mm (2.2 in)	56 years	53 of 100 (Notable)
26 October 2023	Grapevine Dam, US	daily rain	116.8 mm (4.6 in)	10.6 mm (0.4 in)	118 years	45 of 100 (Notable)
8 February 2023	Grapevine Dam, US	daily rain	60.2 mm (2.4 in)	24.1 mm (0.9 in)	49 years	43 of 100 (Notable)
24 January 2023	Grapevine Dam, US	daily rain	5.8 mm (0.23 in)	2.0 mm (0.08 in)	12 years	14 of 100 (Routine)
12 January 2023	Grapevine Dam, US	daily high max	28.9 C (84.0 F)	2.2 C (4.0 F)	28 years	20 of 100 (Routine)
11 January 2023	Grapevine Dam, US	daily high max	28.3 C (82.9 F)	1.6 C (2.9 F)	116 years	42 of 100 (Notable)

Climate Trend

64 complete years, 1902 to 2019

One stripe for each of 64 complete years at Grapevine Dam, 1902 to 2019. Blue stripes are years cooler than the station's own mean of 18.2 C (64.8 F); red stripes are warmer. The coolest year was 1983, at 16.7 C (62.1 F), and the warmest was 1911, at 20.4 C (68.6 F). The strongest colour marks a difference of 2.2 C (4.0 F).

Annual mean temperature at Grapevine Dam as warming stripes, 1902 to 2019
Year	Annual mean temperature	Difference from the station mean
1902	18.7 C	+0.51 C
1903	17.3 C	-0.86 C
1907	19.7 C	+1.52 C
1910	19.9 C	+1.65 C
1911	20.4 C	+2.16 C
1912	18.3 C	+0.10 C
1914	18.8 C	+0.62 C
1915	18.4 C	+0.18 C
1916	19.3 C	+1.11 C
1917	18.5 C	+0.30 C
1954	19.6 C	+1.38 C
1955	18.7 C	+0.49 C
1956	19.1 C	+0.85 C
1957	17.9 C	-0.30 C
1958	17.4 C	-0.79 C
1959	17.4 C	-0.77 C
1960	17.4 C	-0.80 C
1961	17.6 C	-0.60 C
1962	18.0 C	-0.22 C
1963	18.6 C	+0.35 C
1964	17.8 C	-0.41 C
1965	18.2 C	+0.01 C
1966	17.4 C	-0.83 C
1967	18.0 C	-0.16 C
1968	17.1 C	-1.06 C
1969	17.8 C	-0.38 C
1970	17.3 C	-0.86 C
1971	18.0 C	-0.16 C
1972	17.8 C	-0.37 C
1973	17.5 C	-0.66 C
1974	17.8 C	-0.39 C
1975	17.5 C	-0.71 C
1976	17.1 C	-1.11 C
1977	18.5 C	+0.33 C
1978	17.5 C	-0.70 C
1980	18.4 C	+0.17 C
1982	17.5 C	-0.66 C
1983	16.7 C	-1.48 C
1984	17.9 C	-0.34 C
1985	17.7 C	-0.52 C
1986	18.3 C	+0.08 C
1987	17.7 C	-0.46 C
1988	17.6 C	-0.63 C
1989	17.0 C	-1.25 C
1990	18.5 C	+0.32 C
1991	17.8 C	-0.43 C
1992	17.9 C	-0.34 C
1993	17.1 C	-1.12 C
1994	17.4 C	-0.85 C
1996	18.4 C	+0.18 C
1997	17.9 C	-0.34 C
1998	19.7 C	+1.53 C
1999	19.1 C	+0.92 C
2001	18.1 C	-0.13 C
2002	18.0 C	-0.19 C
2005	19.3 C	+1.09 C
2009	18.1 C	-0.06 C
2012	20.2 C	+1.96 C
2014	17.8 C	-0.44 C
2015	18.5 C	+0.26 C
2016	19.5 C	+1.32 C
2017	19.7 C	+1.46 C
2018	18.6 C	+0.40 C
2019	18.6 C	+0.36 C

The fitted trend in annual mean temperature here over 1902 to 2019 is -0.04 C (-0.10 to 0.03) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.1 F (-0.2 to 0.1) per decade. The slope is a straight line fitted to 64 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Grapevine Dam
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.04 C (-0.10 to 0.03) per decade	-0.1 F (-0.2 to 0.1) per decade	1902 to 2019	64	Not clearly different from zero
Mean daily maximum	-0.06 C (-0.14 to 0.01) per decade	-0.12 F (-0.26 to 0.02) per decade	1902 to 2019	64	Not clearly different from zero
Mean daily minimum	-0.01 C (-0.08 to 0.06) per decade	-0.02 F (-0.14 to 0.10) per decade	1902 to 2019	64	Not clearly different from zero

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1897 to 2026

Yearly extremes at Grapevine Dam: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	46.1 C (115.0 F)	1909	40.0 C (104.0 F)	90
Coldest night (TNn)	-18.3 C (-0.9 F)	1918	-10.0 C (14.0 F)	90
Wettest day (Rx1day)	219.5 mm (8.6 in)	1964	77.5 mm (3.1 in)	97
Wettest five days (Rx5day)	348.5 mm (13.7 in)	1964	111.1 mm (4.4 in)	97
Longest dry spell (CDD)	90 days	1897	31 days	97

Hottest day (TXx)

The hottest day of the year at Grapevine Dam, 1897 to 2026. The record is 46.1 C (115.0 F) in 1909, marked on the chart; the median year is 40.0 C (104.0 F).

Hottest day (TXx) at Grapevine Dam by year
Year	Hottest day (TXx)
1897	29.4 C (84.9 F)
1901	42.2 C (108.0 F)
1902	41.1 C (106.0 F)
1903	39.4 C (102.9 F)
1904	41.1 C (106.0 F)
1905	40.0 C (104.0 F)
1906	37.8 C (100.0 F)
1907	40.6 C (105.1 F)
1908	41.1 C (106.0 F)
1909	46.1 C (115.0 F)
1910	42.2 C (108.0 F)
1911	42.8 C (109.0 F)
1912	44.4 C (111.9 F)
1913	42.8 C (109.0 F)
1914	41.7 C (107.1 F)
1915	38.9 C (102.0 F)
1916	39.4 C (102.9 F)
1917	42.8 C (109.0 F)
1918	22.2 C (72.0 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	42.2 C (108.0 F)
1954	43.3 C (109.9 F)
1955	40.0 C (104.0 F)
1956	43.3 C (109.9 F)
1957	41.1 C (106.0 F)
1958	40.0 C (104.0 F)
1959	39.4 C (102.9 F)
1960	39.4 C (102.9 F)
1961	37.8 C (100.0 F)
1962	39.4 C (102.9 F)
1963	40.0 C (104.0 F)
1964	42.8 C (109.0 F)
1965	38.9 C (102.0 F)
1966	37.2 C (99.0 F)
1967	40.6 C (105.1 F)
1968	37.8 C (100.0 F)
1969	40.0 C (104.0 F)
1970	38.9 C (102.0 F)
1971	40.0 C (104.0 F)
1972	40.6 C (105.1 F)
1973	36.7 C (98.1 F)
1974	41.1 C (106.0 F)
1975	36.7 C (98.1 F)
1976	39.4 C (102.9 F)
1977	41.1 C (106.0 F)
1978	41.7 C (107.1 F)
1979	38.3 C (100.9 F)
1980	42.8 C (109.0 F)
1981	38.3 C (100.9 F)
1982	38.3 C (100.9 F)
1983	38.9 C (102.0 F)
1984	40.6 C (105.1 F)
1985	41.1 C (106.0 F)
1986	41.1 C (106.0 F)
1987	38.9 C (102.0 F)
1988	40.6 C (105.1 F)
1989	38.3 C (100.9 F)
1990	40.6 C (105.1 F)
1991	37.8 C (100.0 F)
1992	36.7 C (98.1 F)
1993	40.0 C (104.0 F)
1994	39.4 C (102.9 F)
1995	41.1 C (106.0 F)
1996	41.7 C (107.1 F)
1997	38.9 C (102.0 F)
1998	43.3 C (109.9 F)
1999	42.2 C (108.0 F)
2000	41.1 C (106.0 F)
2001	40.0 C (104.0 F)
2002	39.4 C (102.9 F)
2003	42.2 C (108.0 F)
2004	38.3 C (100.9 F)
2005	40.0 C (104.0 F)
2006	42.2 C (108.0 F)
2007	40.0 C (104.0 F)
2008	41.7 C (107.1 F)
2009	40.0 C (104.0 F)
2010	41.7 C (107.1 F)
2011	43.3 C (109.9 F)
2012	41.7 C (107.1 F)
2013	40.6 C (105.1 F)
2014	39.4 C (102.9 F)
2015	40.0 C (104.0 F)
2016	40.6 C (105.1 F)
2017	38.3 C (100.9 F)
2018	42.8 C (109.0 F)
2019	38.9 C (102.0 F)
2020	41.1 C (106.0 F)
2021	23.3 C (73.9 F)
2022	42.8 C (109.0 F)
2023	28.9 C (84.0 F)
2024	n/a
2025	n/a
2026	n/a

Coldest night (TNn)

The coldest night of the year at Grapevine Dam, 1897 to 2026. The record is -18.3 C (-0.9 F) in 1918, marked on the chart; the median year is -10.0 C (14.0 F).

Coldest night (TNn) at Grapevine Dam by year
Year	Coldest night (TNn)
1897	-12.8 C (9.0 F)
1901	-12.8 C (9.0 F)
1902	-12.8 C (9.0 F)
1903	-13.9 C (7.0 F)
1904	-6.7 C (19.9 F)
1905	-16.1 C (3.0 F)
1906	-9.4 C (15.1 F)
1907	-7.2 C (19.0 F)
1908	-7.8 C (18.0 F)
1909	-13.3 C (8.1 F)
1910	-12.2 C (10.0 F)
1911	-15.0 C (5.0 F)
1912	-16.7 C (1.9 F)
1913	-12.8 C (9.0 F)
1914	-11.7 C (10.9 F)
1915	-6.7 C (19.9 F)
1916	-12.2 C (10.0 F)
1917	-12.2 C (10.0 F)
1918	-18.3 C (-0.9 F)
1949	n/a
1950	n/a
1951	n/a
1952	n/a
1953	-8.3 C (17.1 F)
1954	-10.0 C (14.0 F)
1955	-7.8 C (18.0 F)
1956	-10.0 C (14.0 F)
1957	-9.4 C (15.1 F)
1958	-9.4 C (15.1 F)
1959	-14.4 C (6.1 F)
1960	-10.0 C (14.0 F)
1961	-8.9 C (16.0 F)
1962	-13.9 C (7.0 F)
1963	-14.4 C (6.1 F)
1964	-13.9 C (7.0 F)
1965	-8.9 C (16.0 F)
1966	-13.9 C (7.0 F)
1967	-6.7 C (19.9 F)
1968	-12.2 C (10.0 F)
1969	-9.4 C (15.1 F)
1970	-10.0 C (14.0 F)
1971	-10.6 C (12.9 F)
1972	-10.6 C (12.9 F)
1973	-12.2 C (10.0 F)
1974	-8.9 C (16.0 F)
1975	-8.9 C (16.0 F)
1976	-12.2 C (10.0 F)
1977	-12.2 C (10.0 F)
1978	-12.2 C (10.0 F)
1979	-12.8 C (9.0 F)
1980	-10.6 C (12.9 F)
1981	-12.2 C (10.0 F)
1982	-14.4 C (6.1 F)
1983	-15.6 C (3.9 F)
1984	-12.2 C (10.0 F)
1985	-13.3 C (8.1 F)
1986	-7.2 C (19.0 F)
1987	-6.1 C (21.0 F)
1988	-9.4 C (15.1 F)
1989	-18.3 C (-0.9 F)
1990	-14.4 C (6.1 F)
1991	-12.2 C (10.0 F)
1992	-8.9 C (16.0 F)
1993	-7.2 C (19.0 F)
1994	-10.0 C (14.0 F)
1995	-12.2 C (10.0 F)
1996	-15.6 C (3.9 F)
1997	-10.0 C (14.0 F)
1998	-10.0 C (14.0 F)
1999	-8.9 C (16.0 F)
2000	-8.9 C (16.0 F)
2001	-9.4 C (15.1 F)
2002	-11.1 C (12.0 F)
2003	-8.9 C (16.0 F)
2004	-9.4 C (15.1 F)
2005	-9.4 C (15.1 F)
2006	-5.6 C (21.9 F)
2007	-9.4 C (15.1 F)
2008	-7.8 C (18.0 F)
2009	-10.0 C (14.0 F)
2010	-11.7 C (10.9 F)
2011	-11.1 C (12.0 F)
2012	-5.6 C (21.9 F)
2013	-8.3 C (17.1 F)
2014	-11.7 C (10.9 F)
2015	-9.4 C (15.1 F)
2016	-9.4 C (15.1 F)
2017	-11.1 C (12.0 F)
2018	-13.3 C (8.1 F)
2019	-6.7 C (19.9 F)
2020	-4.4 C (24.1 F)
2021	-3.3 C (26.1 F)
2022	-6.1 C (21.0 F)
2023	-1.7 C (28.9 F)
2024	n/a
2025	n/a
2026	n/a

Wettest day (Rx1day)

The wettest day of the year at Grapevine Dam, 1897 to 2026. The record is 219.5 mm (8.6 in) in 1964, marked on the chart; the median year is 77.5 mm (3.1 in).

Wettest day (Rx1day) at Grapevine Dam by year
Year	Wettest day (Rx1day)
1897	0.0 mm (0.00 in)
1901	45.2 mm (1.8 in)
1902	114.6 mm (4.5 in)
1903	66.0 mm (2.6 in)
1904	106.2 mm (4.2 in)
1905	79.0 mm (3.1 in)
1906	96.5 mm (3.8 in)
1907	102.9 mm (4.1 in)
1908	135.9 mm (5.4 in)
1909	52.1 mm (2.1 in)
1910	77.5 mm (3.1 in)
1911	47.0 mm (1.9 in)
1912	54.6 mm (2.1 in)
1913	108.0 mm (4.3 in)
1914	92.2 mm (3.6 in)
1915	128.5 mm (5.1 in)
1916	85.1 mm (3.4 in)
1917	55.4 mm (2.2 in)
1918	16.5 mm (0.6 in)
1949	136.1 mm (5.4 in)
1950	75.7 mm (3.0 in)
1951	83.8 mm (3.3 in)
1952	55.6 mm (2.2 in)
1953	90.4 mm (3.6 in)
1954	57.7 mm (2.3 in)
1955	77.5 mm (3.1 in)
1956	56.9 mm (2.2 in)
1957	104.9 mm (4.1 in)
1958	82.6 mm (3.3 in)
1959	127.3 mm (5.0 in)
1960	86.4 mm (3.4 in)
1961	57.7 mm (2.3 in)
1962	106.7 mm (4.2 in)
1963	42.4 mm (1.7 in)
1964	219.5 mm (8.6 in)
1965	72.1 mm (2.8 in)
1966	100.6 mm (4.0 in)
1967	84.6 mm (3.3 in)
1968	74.9 mm (2.9 in)
1969	71.4 mm (2.8 in)
1970	71.6 mm (2.8 in)
1971	81.5 mm (3.2 in)
1972	74.9 mm (2.9 in)
1973	70.6 mm (2.8 in)
1974	75.2 mm (3.0 in)
1975	44.2 mm (1.7 in)
1976	74.2 mm (2.9 in)
1977	123.7 mm (4.9 in)
1978	48.5 mm (1.9 in)
1979	38.1 mm (1.5 in)
1980	50.5 mm (2.0 in)
1981	75.7 mm (3.0 in)
1982	140.0 mm (5.5 in)
1983	50.8 mm (2.0 in)
1984	67.8 mm (2.7 in)
1985	60.7 mm (2.4 in)
1986	58.9 mm (2.3 in)
1987	82.6 mm (3.3 in)
1988	86.4 mm (3.4 in)
1989	210.8 mm (8.3 in)
1990	84.6 mm (3.3 in)
1991	93.2 mm (3.7 in)
1992	75.4 mm (3.0 in)
1993	112.5 mm (4.4 in)
1994	129.0 mm (5.1 in)
1995	77.2 mm (3.0 in)
1996	93.5 mm (3.7 in)
1997	69.9 mm (2.8 in)
1998	98.3 mm (3.9 in)
1999	50.8 mm (2.0 in)
2000	71.1 mm (2.8 in)
2001	75.4 mm (3.0 in)
2002	127.3 mm (5.0 in)
2003	65.0 mm (2.6 in)
2004	190.5 mm (7.5 in)
2005	50.8 mm (2.0 in)
2006	99.6 mm (3.9 in)
2007	76.2 mm (3.0 in)
2008	86.4 mm (3.4 in)
2009	118.6 mm (4.7 in)
2010	130.0 mm (5.1 in)
2011	87.1 mm (3.4 in)
2012	113.8 mm (4.5 in)
2013	92.2 mm (3.6 in)
2014	65.5 mm (2.6 in)
2015	120.7 mm (4.8 in)
2016	50.8 mm (2.0 in)
2017	76.2 mm (3.0 in)
2018	92.7 mm (3.6 in)
2019	68.1 mm (2.7 in)
2020	111.3 mm (4.4 in)
2021	51.8 mm (2.0 in)
2022	92.7 mm (3.6 in)
2023	116.8 mm (4.6 in)
2024	72.4 mm (2.9 in)
2025	148.1 mm (5.8 in)
2026	75.4 mm (3.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Grapevine Dam, 1897 to 2026. The record is 348.5 mm (13.7 in) in 1964, marked on the chart; the median year is 111.1 mm (4.4 in).

Wettest five days (Rx5day) at Grapevine Dam by year
Year	Wettest five days (Rx5day)
1897	0.0 mm (0.00 in)
1901	88.9 mm (3.5 in)
1902	118.4 mm (4.7 in)
1903	70.8 mm (2.8 in)
1904	114.8 mm (4.5 in)
1905	89.7 mm (3.5 in)
1906	103.1 mm (4.1 in)
1907	133.9 mm (5.3 in)
1908	148.6 mm (5.9 in)
1909	52.1 mm (2.1 in)
1910	77.5 mm (3.1 in)
1911	65.5 mm (2.6 in)
1912	114.4 mm (4.5 in)
1913	131.8 mm (5.2 in)
1914	133.6 mm (5.3 in)
1915	128.8 mm (5.1 in)
1916	136.9 mm (5.4 in)
1917	89.7 mm (3.5 in)
1918	22.9 mm (0.9 in)
1949	154.9 mm (6.1 in)
1950	96.0 mm (3.8 in)
1951	84.3 mm (3.3 in)
1952	107.2 mm (4.2 in)
1953	90.4 mm (3.6 in)
1954	106.2 mm (4.2 in)
1955	110.5 mm (4.4 in)
1956	128.9 mm (5.1 in)
1957	226.3 mm (8.9 in)
1958	141.1 mm (5.6 in)
1959	206.0 mm (8.1 in)
1960	144.3 mm (5.7 in)
1961	95.5 mm (3.8 in)
1962	161.0 mm (6.3 in)
1963	72.5 mm (2.9 in)
1964	348.5 mm (13.7 in)
1965	137.1 mm (5.4 in)
1966	210.3 mm (8.3 in)
1967	113.1 mm (4.5 in)
1968	87.3 mm (3.4 in)
1969	135.9 mm (5.4 in)
1970	117.3 mm (4.6 in)
1971	139.7 mm (5.5 in)
1972	88.4 mm (3.5 in)
1973	88.6 mm (3.5 in)
1974	150.9 mm (5.9 in)
1975	76.2 mm (3.0 in)
1976	92.0 mm (3.6 in)
1977	134.4 mm (5.3 in)
1978	64.3 mm (2.5 in)
1979	65.6 mm (2.6 in)
1980	131.3 mm (5.2 in)
1981	90.2 mm (3.6 in)
1982	185.7 mm (7.3 in)
1983	95.0 mm (3.7 in)
1984	108.7 mm (4.3 in)
1985	69.0 mm (2.7 in)
1986	105.1 mm (4.1 in)
1987	90.4 mm (3.6 in)
1988	107.5 mm (4.2 in)
1989	281.9 mm (11.1 in)
1990	133.1 mm (5.2 in)
1991	210.5 mm (8.3 in)
1992	101.4 mm (4.0 in)
1993	116.1 mm (4.6 in)
1994	164.0 mm (6.5 in)
1995	87.6 mm (3.4 in)
1996	161.8 mm (6.4 in)
1997	111.1 mm (4.4 in)
1998	175.8 mm (6.9 in)
1999	70.1 mm (2.8 in)
2000	104.2 mm (4.1 in)
2001	96.5 mm (3.8 in)
2002	132.8 mm (5.2 in)
2003	85.3 mm (3.4 in)
2004	195.1 mm (7.7 in)
2005	83.1 mm (3.3 in)
2006	107.0 mm (4.2 in)
2007	138.9 mm (5.5 in)
2008	87.2 mm (3.4 in)
2009	164.9 mm (6.5 in)
2010	260.8 mm (10.3 in)
2011	103.6 mm (4.1 in)
2012	125.3 mm (4.9 in)
2013	118.1 mm (4.6 in)
2014	96.0 mm (3.8 in)
2015	229.4 mm (9.0 in)
2016	104.3 mm (4.1 in)
2017	105.7 mm (4.2 in)
2018	162.6 mm (6.4 in)
2019	132.4 mm (5.2 in)
2020	149.1 mm (5.9 in)
2021	75.4 mm (3.0 in)
2022	109.5 mm (4.3 in)
2023	200.6 mm (7.9 in)
2024	109.7 mm (4.3 in)
2025	185.2 mm (7.3 in)
2026	132.8 mm (5.2 in)

Longest dry spell (CDD)

The longest dry spell of the year at Grapevine Dam, 1897 to 2026. The record is 90 days in 1897, marked on the chart; the median year is 31 days.

Longest dry spell (CDD) at Grapevine Dam by year
Year	Longest dry spell (CDD)
1897	90 days
1901	28 days
1902	30 days
1903	39 days
1904	38 days
1905	20 days
1906	36 days
1907	22 days
1908	25 days
1909	36 days
1910	34 days
1911	32 days
1912	33 days
1913	40 days
1914	36 days
1915	31 days
1916	39 days
1917	50 days
1918	10 days
1949	20 days
1950	58 days
1951	23 days
1952	43 days
1953	42 days
1954	26 days
1955	60 days
1956	40 days
1957	29 days
1958	28 days
1959	30 days
1960	24 days
1961	27 days
1962	27 days
1963	42 days
1964	23 days
1965	25 days
1966	25 days
1967	34 days
1968	21 days
1969	26 days
1970	30 days
1971	32 days
1972	40 days
1973	36 days
1974	46 days
1975	40 days
1976	28 days
1977	30 days
1978	24 days
1979	38 days
1980	76 days
1981	26 days
1982	22 days
1983	23 days
1984	29 days
1985	25 days
1986	33 days
1987	33 days
1988	34 days
1989	37 days
1990	33 days
1991	30 days
1992	19 days
1993	39 days
1994	24 days
1995	41 days
1996	43 days
1997	27 days
1998	31 days
1999	55 days
2000	59 days
2001	27 days
2002	16 days
2003	40 days
2004	28 days
2005	49 days
2006	40 days
2007	31 days
2008	26 days
2009	33 days
2010	38 days
2011	29 days
2012	32 days
2013	26 days
2014	22 days
2015	41 days
2016	30 days
2017	30 days
2018	24 days
2019	36 days
2020	23 days
2021	20 days
2022	67 days
2023	55 days
2024	35 days
2025	30 days
2026	21 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.

Frost Dates and Growing Season

64 years with a frost

Across 64 years with a frost, the median last spring frost at Grapevine Dam falls on 23 March and the median first autumn frost on 13 November, which leaves a median of 238 days between them.

In 1978 to 2019 the median growing season was 235 days. That is 4 days fewer than in 1902 to 1973.

Fitted over all years, the growing season changes by -0.2 days per decade at this station.

Frost dates and growing season at Grapevine Dam
Measure	Median, all years	Earliest period (1902 to 1973)	Recent period (1978 to 2019)	Recent against earliest	Fitted trend
Last spring frost	23 March	22 March	26 March	4 days later	+0.2 days per decade
First autumn frost	13 November	14 November	13 November	1 day earlier	0.0 days per decade
Growing days	238 days	239 days	235 days	4 days fewer	-0.2 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

87 years, 1902 to 2025

A day with at least 80.8 mm (3.2 in) of rain is expected about once in 2 years. A day with at least 206.1 mm (8.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Grapevine Dam: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	80.8 mm (3.2 in)
5 years	109.0 mm (4.3 in)
10 years	129.6 mm (5.1 in)
25 years	158.1 mm (6.2 in)
50 years	181.3 mm (7.1 in)
100 years	206.1 mm (8.1 in)	Longer than the 87 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, 87 years of values from 1902 to 2025.

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: 219.5 mm (8.6 in) in 1964; 210.8 mm (8.3 in) in 1989; 190.5 mm (7.5 in) in 2004.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

Data for Grapevine Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Grapevine Dam 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). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).