Record envelope, standing records and threshold days for Granger Dam (USC00413686), Texas, United States, with 44 years of record.
Key Facts for Granger Dam
Granger Dam (USC00413686) is a weather station in Texas, United States at 30.72 latitude and -97.32 longitude, 169 m (555 ft) above sea level.
The station reports from 1980 to 2023, 44 years of record.
1,464 records set at Granger Dam still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Granger Dam set a daily record high minimum temperature of 25.0 C (77.0 F) on 4 September 2023.
About the Station
Location: Texas, United States, 30.72 latitude, -97.32 longitude.
Elevation: 169 m (555 ft).
Period of record: 1980 to 2023, 44 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 Granger 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 Granger Dam, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
30.0 C (86.0 F)
-13.9 C (7.0 F)
n/a
n/a
Feb
36.7 C (98.1 F)
-16.1 C (3.0 F)
n/a
n/a
Mar
34.4 C (93.9 F)
-7.2 C (19.0 F)
n/a
n/a
Apr
36.1 C (97.0 F)
-1.7 C (28.9 F)
n/a
n/a
May
37.8 C (100.0 F)
2.8 C (37.0 F)
n/a
n/a
Jun
41.7 C (107.1 F)
7.8 C (46.0 F)
n/a
n/a
Jul
42.2 C (108.0 F)
14.4 C (57.9 F)
n/a
n/a
Aug
42.2 C (108.0 F)
13.9 C (57.0 F)
n/a
n/a
Sep
43.3 C (109.9 F)
6.7 C (44.1 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-2.8 C (27.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-6.1 C (21.0 F)
n/a
n/a
Dec
28.9 C (84.0 F)
-16.7 C (1.9 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Granger Dam still stand. 2011 holds the most, with 65.
Standing records at Granger Dam by the year they were set
Year set
Standing records
1980
22
1981
30
1982
39
1983
62
1984
47
1985
34
1986
36
1987
26
1988
26
1989
59
1990
44
1991
39
1992
28
1993
27
1994
25
1995
40
1996
49
1997
40
1998
38
1999
31
2000
48
2001
22
2002
30
2003
25
2004
29
2005
28
2006
41
2007
45
2008
18
2009
34
2010
26
2011
65
2012
24
2013
37
2014
27
2015
18
2016
32
2017
39
2018
28
2019
23
2020
21
2021
9
2022
21
2023
32
All-Time Record Progression
1 new records
1 all-time records were set at Granger Dam between 6 February 2020 and 6 February 2020. Each dot is a new record.
When Granger Dam set new all-time records
Date
Kind
Detail
2020-02-06
Record daily snowfall
Record daily snowfall 0.3 cm (0.1 in)
Wettest Day of Each Month
Dec: 199.1 mm (7.8 in)
The wettest day on record for each calendar month at Granger Dam. The most was 199.1 mm (7.8 in) on 21 December 1991.
Record daily precipitation for each month at Granger Dam
Month
Record daily precipitation (mm)
Date
Jan
73.7 mm (2.9 in)
25 January 2012
Feb
62.2 mm (2.4 in)
12 February 2020
Mar
85.1 mm (3.4 in)
28 March 2018
Apr
141.2 mm (5.6 in)
18 April 2016
May
185.7 mm (7.3 in)
13 May 2004
Jun
137.2 mm (5.4 in)
14 June 1981
Jul
138.4 mm (5.4 in)
18 July 2014
Aug
84.6 mm (3.3 in)
10 August 2005
Sep
104.6 mm (4.1 in)
15 September 1998
Oct
153.7 mm (6.1 in)
8 October 1994
Nov
88.9 mm (3.5 in)
3 November 2000
Dec
199.1 mm (7.8 in)
21 December 1991
Period of Record Coverage
1980 to 2023
Complete yearUnder 90 percent of days
44 years of record at Granger Dam, 1980 to 2023. 14 years have data for under 90 percent of days and are left out of rankings: 1980, 1985, 1988, 2004, 2005, 2006, 2007, 2011 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 31 complete years at Granger Dam, 1981 to 2017. Blue stripes are years cooler than the station's own mean of 19.6 C (67.2 F); red stripes are warmer. The coolest year was 1983, at 17.4 C (63.3 F), and the warmest was 2012, at 20.8 C (69.5 F). The strongest colour marks a difference of 2.2 C (4.0 F).
Annual mean temperature at Granger Dam as warming stripes, 1981 to 2017
Year
Annual mean temperature
Difference from the station mean
1981
19.4 C
-0.19 C
1982
18.9 C
-0.65 C
1983
17.4 C
-2.18 C
1984
19.6 C
+0.01 C
1986
19.6 C
+0.00 C
1987
18.9 C
-0.67 C
1989
18.7 C
-0.82 C
1990
20.1 C
+0.50 C
1991
19.2 C
-0.34 C
1992
19.1 C
-0.42 C
1993
18.8 C
-0.74 C
1994
19.5 C
-0.02 C
1995
19.3 C
-0.22 C
1996
19.6 C
+0.03 C
1997
19.2 C
-0.33 C
1998
20.3 C
+0.75 C
1999
20.7 C
+1.09 C
2000
20.3 C
+0.71 C
2001
19.5 C
-0.08 C
2002
19.4 C
-0.12 C
2003
19.8 C
+0.21 C
2006
20.7 C
+1.15 C
2008
19.8 C
+0.25 C
2009
19.5 C
-0.08 C
2010
18.8 C
-0.75 C
2012
20.8 C
+1.25 C
2013
19.1 C
-0.47 C
2014
19.1 C
-0.47 C
2015
19.8 C
+0.28 C
2016
20.6 C
+1.01 C
2017
20.8 C
+1.24 C
The annual mean temperature here has risen by 0.3 C (0.1 to 0.6) per decade over 1981 to 2017. In Fahrenheit: 0.6 F (0.2 to 1.0) per decade. The slope is a straight line fitted to 31 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at Granger Dam
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.3 C (0.1 to 0.6) per decade
0.6 F (0.2 to 1.0) per decade
1981 to 2017
31
Rise
Mean daily maximum
0.4 C (0.1 to 0.7) per decade
0.8 F (0.3 to 1.3) per decade
1981 to 2017
31
Rise
Mean daily minimum
0.25 C (-0.01 to 0.50) per decade
0.44 F (-0.02 to 0.90) per decade
1981 to 2017
31
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
1980 to 2023
Yearly extremes at Granger Dam: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
43.3 C (109.9 F)
2000
40.0 C (104.0 F)
44
Coldest night (TNn)
-16.7 C (1.9 F)
1989
-6.7 C (19.9 F)
44
Wettest day (Rx1day)
199.1 mm (7.8 in)
1991
73.1 mm (2.9 in)
44
Wettest five days (Rx5day)
281.2 mm (11.1 in)
1991
100.0 mm (3.9 in)
44
Longest dry spell (CDD)
69 days
1993
29 days
44
Hottest day (TXx)
The hottest day of the year at Granger Dam, 1980 to 2023. The record is 43.3 C (109.9 F) in 2000, marked on the chart; the median year is 40.0 C (104.0 F).
Hottest day (TXx) at Granger Dam by year
Year
Hottest day (TXx)
1980
40.0 C (104.0 F)
1981
37.8 C (100.0 F)
1982
38.9 C (102.0 F)
1983
38.3 C (100.9 F)
1984
40.6 C (105.1 F)
1985
40.0 C (104.0 F)
1986
38.3 C (100.9 F)
1987
36.7 C (98.1 F)
1988
40.0 C (104.0 F)
1989
38.3 C (100.9 F)
1990
40.6 C (105.1 F)
1991
37.2 C (99.0 F)
1992
36.7 C (98.1 F)
1993
37.2 C (99.0 F)
1994
38.9 C (102.0 F)
1995
38.9 C (102.0 F)
1996
38.3 C (100.9 F)
1997
38.3 C (100.9 F)
1998
40.6 C (105.1 F)
1999
40.0 C (104.0 F)
2000
43.3 C (109.9 F)
2001
39.4 C (102.9 F)
2002
38.9 C (102.0 F)
2003
41.7 C (107.1 F)
2004
38.3 C (100.9 F)
2005
41.1 C (106.0 F)
2006
40.0 C (104.0 F)
2007
37.2 C (99.0 F)
2008
38.9 C (102.0 F)
2009
40.0 C (104.0 F)
2010
40.6 C (105.1 F)
2011
42.2 C (108.0 F)
2012
41.7 C (107.1 F)
2013
40.6 C (105.1 F)
2014
38.3 C (100.9 F)
2015
40.0 C (104.0 F)
2016
40.0 C (104.0 F)
2017
40.0 C (104.0 F)
2018
42.2 C (108.0 F)
2019
40.0 C (104.0 F)
2020
39.4 C (102.9 F)
2021
37.8 C (100.0 F)
2022
41.7 C (107.1 F)
2023
41.7 C (107.1 F)
Coldest night (TNn)
The coldest night of the year at Granger Dam, 1980 to 2023. The record is -16.7 C (1.9 F) in 1989, marked on the chart; the median year is -6.7 C (19.9 F).
Coldest night (TNn) at Granger Dam by year
Year
Coldest night (TNn)
1980
-5.6 C (21.9 F)
1981
-9.4 C (15.1 F)
1982
-13.9 C (7.0 F)
1983
-13.3 C (8.1 F)
1984
-12.2 C (10.0 F)
1985
-16.1 C (3.0 F)
1986
-4.4 C (24.1 F)
1987
-3.9 C (25.0 F)
1988
-7.2 C (19.0 F)
1989
-16.7 C (1.9 F)
1990
-10.6 C (12.9 F)
1991
-7.8 C (18.0 F)
1992
-5.6 C (21.9 F)
1993
-5.6 C (21.9 F)
1994
-6.1 C (21.0 F)
1995
-6.7 C (19.9 F)
1996
-12.2 C (10.0 F)
1997
-5.6 C (21.9 F)
1998
-3.9 C (25.0 F)
1999
-4.4 C (24.1 F)
2000
-5.0 C (23.0 F)
2001
-2.8 C (27.0 F)
2002
-7.2 C (19.0 F)
2003
-6.1 C (21.0 F)
2004
-5.0 C (23.0 F)
2005
-8.3 C (17.1 F)
2006
-5.0 C (23.0 F)
2007
-7.2 C (19.0 F)
2008
-6.1 C (21.0 F)
2009
-8.3 C (17.1 F)
2010
-10.6 C (12.9 F)
2011
-9.4 C (15.1 F)
2012
-4.4 C (24.1 F)
2013
-4.4 C (24.1 F)
2014
-7.8 C (18.0 F)
2015
-6.7 C (19.9 F)
2016
-6.7 C (19.9 F)
2017
-8.3 C (17.1 F)
2018
-11.7 C (10.9 F)
2019
-5.6 C (21.9 F)
2020
-2.2 C (28.0 F)
2021
0.6 C (33.1 F)
2022
-10.0 C (14.0 F)
2023
-3.3 C (26.1 F)
Wettest day (Rx1day)
The wettest day of the year at Granger Dam, 1980 to 2023. The record is 199.1 mm (7.8 in) in 1991, marked on the chart; the median year is 73.1 mm (2.9 in).
Wettest day (Rx1day) at Granger Dam by year
Year
Wettest day (Rx1day)
1980
39.1 mm (1.5 in)
1981
137.2 mm (5.4 in)
1982
72.1 mm (2.8 in)
1983
72.4 mm (2.9 in)
1984
86.4 mm (3.4 in)
1985
56.6 mm (2.2 in)
1986
63.0 mm (2.5 in)
1987
96.5 mm (3.8 in)
1988
49.8 mm (2.0 in)
1989
60.7 mm (2.4 in)
1990
53.3 mm (2.1 in)
1991
199.1 mm (7.8 in)
1992
52.6 mm (2.1 in)
1993
64.3 mm (2.5 in)
1994
153.7 mm (6.1 in)
1995
61.7 mm (2.4 in)
1996
59.9 mm (2.4 in)
1997
75.4 mm (3.0 in)
1998
104.6 mm (4.1 in)
1999
61.0 mm (2.4 in)
2000
89.9 mm (3.5 in)
2001
89.7 mm (3.5 in)
2002
50.0 mm (2.0 in)
2003
52.6 mm (2.1 in)
2004
185.7 mm (7.3 in)
2005
84.6 mm (3.3 in)
2006
76.7 mm (3.0 in)
2007
81.3 mm (3.2 in)
2008
52.6 mm (2.1 in)
2009
82.6 mm (3.3 in)
2010
38.4 mm (1.5 in)
2011
49.8 mm (2.0 in)
2012
73.7 mm (2.9 in)
2013
83.3 mm (3.3 in)
2014
138.4 mm (5.4 in)
2015
99.6 mm (3.9 in)
2016
141.2 mm (5.6 in)
2017
83.3 mm (3.3 in)
2018
85.1 mm (3.4 in)
2019
61.0 mm (2.4 in)
2020
62.2 mm (2.4 in)
2021
61.7 mm (2.4 in)
2022
79.2 mm (3.1 in)
2023
63.5 mm (2.5 in)
Wettest five days (Rx5day)
The wettest five days of the year at Granger Dam, 1980 to 2023. The record is 281.2 mm (11.1 in) in 1991, marked on the chart; the median year is 100.0 mm (3.9 in).
Wettest five days (Rx5day) at Granger Dam by year
Year
Wettest five days (Rx5day)
1980
72.6 mm (2.9 in)
1981
248.0 mm (9.8 in)
1982
87.1 mm (3.4 in)
1983
98.8 mm (3.9 in)
1984
114.1 mm (4.5 in)
1985
74.4 mm (2.9 in)
1986
84.8 mm (3.3 in)
1987
124.5 mm (4.9 in)
1988
72.6 mm (2.9 in)
1989
105.2 mm (4.1 in)
1990
103.1 mm (4.1 in)
1991
281.2 mm (11.1 in)
1992
105.7 mm (4.2 in)
1993
90.4 mm (3.6 in)
1994
153.7 mm (6.1 in)
1995
110.2 mm (4.3 in)
1996
71.1 mm (2.8 in)
1997
94.5 mm (3.7 in)
1998
225.6 mm (8.9 in)
1999
77.0 mm (3.0 in)
2000
151.3 mm (6.0 in)
2001
228.3 mm (9.0 in)
2002
90.8 mm (3.6 in)
2003
60.7 mm (2.4 in)
2004
195.6 mm (7.7 in)
2005
179.6 mm (7.1 in)
2006
86.9 mm (3.4 in)
2007
195.7 mm (7.7 in)
2008
68.3 mm (2.7 in)
2009
203.7 mm (8.0 in)
2010
51.4 mm (2.0 in)
2011
76.0 mm (3.0 in)
2012
88.4 mm (3.5 in)
2013
92.2 mm (3.6 in)
2014
139.5 mm (5.5 in)
2015
159.0 mm (6.3 in)
2016
190.5 mm (7.5 in)
2017
155.1 mm (6.1 in)
2018
101.2 mm (4.0 in)
2019
92.2 mm (3.6 in)
2020
76.2 mm (3.0 in)
2021
83.1 mm (3.3 in)
2022
122.1 mm (4.8 in)
2023
75.4 mm (3.0 in)
Longest dry spell (CDD)
The longest dry spell of the year at Granger Dam, 1980 to 2023. The record is 69 days in 1993, marked on the chart; the median year is 29 days.
Longest dry spell (CDD) at Granger Dam by year
Year
Longest dry spell (CDD)
1980
37 days
1981
20 days
1982
27 days
1983
20 days
1984
24 days
1985
29 days
1986
44 days
1987
36 days
1988
56 days
1989
22 days
1990
48 days
1991
25 days
1992
25 days
1993
69 days
1994
45 days
1995
30 days
1996
25 days
1997
43 days
1998
29 days
1999
64 days
2000
41 days
2001
43 days
2002
26 days
2003
34 days
2004
29 days
2005
35 days
2006
34 days
2007
28 days
2008
33 days
2009
36 days
2010
29 days
2011
68 days
2012
33 days
2013
25 days
2014
27 days
2015
49 days
2016
26 days
2017
19 days
2018
31 days
2019
27 days
2020
17 days
2021
22 days
2022
25 days
2023
13 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
31 years with a frost
Across 31 years with a frost, the median last spring frost at Granger Dam falls on 5 March and the median first autumn frost on 29 November, which leaves a median of 270 days between them.
Fitted over all years, the growing season changes by +1.8 days per decade at this station.
Frost dates and growing season at Granger Dam
Measure
Median, all years
Earliest period
Recent period (1982 to 2017)
Recent against earliest
Fitted trend
Last spring frost
5 March
n/a
5 March
n/a
-2.1 days per decade
First autumn frost
29 November
n/a
27 November
n/a
-0.3 days per decade
Growing days
270 days
n/a
271 days
n/a
+1.8 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
37 years, 1981 to 2017
A day with at least 73.8 mm (2.9 in) of rain is expected about once in 2 years. A day with at least 247.2 mm (9.7 in) of rain is expected about once in 100 years.
Rainfall return levels at Granger 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
73.8 mm (2.9 in)
5 years
104.4 mm (4.1 in)
10 years
129.8 mm (5.1 in)
25 years
169.3 mm (6.7 in)
50 years
205.1 mm (8.1 in)
Longer than the 37 years of record
100 years
247.2 mm (9.7 in)
Longer than the 37 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, 37 years of values from 1981 to 2017.
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: 199.1 mm (7.8 in) in 1991; 185.7 mm (7.3 in) in 2004; 153.7 mm (6.1 in) in 1994.
Download the Data
Data for Granger Dam standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Granger 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.