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
Record highRecord low2026 daily maximum2026 daily minimum
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
Year with most
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
Complete yearUnder 90 percent of days
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.
Cooler than the station meanWarmer than the station mean
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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.