Record envelope, standing records and threshold days for Hackberry 8 SSW (USC00163979), Louisiana, United States, with 85 years of record.
Key Facts for Hackberry 8 SSW
Hackberry 8 SSW (USC00163979) is a weather station in Louisiana, United States at 29.89 latitude and -93.40 longitude, 2 m (6 ft) above sea level.
The station reports from 1939 to 2023, 85 years of record.
1,464 records set at Hackberry 8 SSW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Hackberry 8 SSW set a daily record precipitation of 65.3 mm (2.6 in) on 8 December 2023.
About the Station
Location: Louisiana, United States, 29.89 latitude, -93.40 longitude.
Elevation: 2 m (6 ft).
Period of record: 1939 to 2023, 85 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 Hackberry 8 SSW. 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 Hackberry 8 SSW, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
28.9 C (84.0 F)
-10.6 C (12.9 F)
n/a
n/a
Feb
26.7 C (80.1 F)
-11.7 C (10.9 F)
n/a
n/a
Mar
31.7 C (89.1 F)
-3.9 C (25.0 F)
n/a
n/a
Apr
33.9 C (93.0 F)
1.7 C (35.1 F)
n/a
n/a
May
35.6 C (96.1 F)
6.7 C (44.1 F)
n/a
n/a
Jun
37.8 C (100.0 F)
12.2 C (54.0 F)
n/a
n/a
Jul
38.3 C (100.9 F)
16.1 C (61.0 F)
n/a
n/a
Aug
39.4 C (102.9 F)
15.0 C (59.0 F)
n/a
n/a
Sep
41.1 C (106.0 F)
7.2 C (45.0 F)
n/a
n/a
Oct
36.7 C (98.1 F)
-1.7 C (28.9 F)
n/a
n/a
Nov
31.1 C (88.0 F)
-6.7 C (19.9 F)
n/a
n/a
Dec
31.1 C (88.0 F)
-11.1 C (12.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at Hackberry 8 SSW still stand. 1951 holds the most, with 46.
Standing records at Hackberry 8 SSW by the year they were set
Year set
Standing records
1939
18
1940
24
1941
16
1942
13
1943
18
1944
22
1945
24
1946
10
1947
25
1948
34
1949
19
1950
43
1951
46
1952
39
1953
12
1954
24
1955
30
1956
17
1957
18
1958
10
1959
10
1960
16
1961
24
1962
27
1963
15
1964
17
1965
20
1966
14
1967
23
1968
18
1969
17
1970
19
1971
19
1972
16
1973
12
1974
24
1975
7
1976
23
1977
10
1978
27
1979
11
1980
17
1981
14
1982
17
1983
18
1984
18
1985
8
1986
5
1987
15
1988
14
1989
36
1990
19
1991
13
1992
9
1993
12
1994
6
1995
16
1996
21
1997
13
1998
33
1999
26
2000
28
2001
14
2002
28
2003
11
2004
16
2005
9
2009
7
2010
17
2011
14
2012
9
2013
12
2014
15
2015
21
2016
12
2017
22
2018
27
2019
27
2020
14
All-Time Record Progression
4 new records
4 all-time records were set at Hackberry 8 SSW between 15 August 1999 and 13 August 2009. Each dot is a new record.
When Hackberry 8 SSW set new all-time records
Date
Kind
Detail
1999-08-15
Record high maximum temperature
Record high maximum temperature 38.9 C (102.0 F)
1999-08-20
Record high maximum temperature
Record high maximum temperature 39.4 C (102.9 F)
2000-09-01
Record high maximum temperature
Record high maximum temperature 41.1 C (106.0 F)
2009-08-13
Record high minimum temperature
Record high minimum temperature 30.0 C (86.0 F)
Wettest Day of Each Month
Aug: 558.8 mm (22.0 in)
The wettest day on record for each calendar month at Hackberry 8 SSW. The most was 558.8 mm (22.0 in) on 29 August 1962.
Record daily precipitation for each month at Hackberry 8 SSW
Month
Record daily precipitation (mm)
Date
Jan
119.9 mm (4.7 in)
10 January 2012
Feb
111.5 mm (4.4 in)
11 February 2018
Mar
164.6 mm (6.5 in)
1 March 1965
Apr
159.3 mm (6.3 in)
21 April 2016
May
159.0 mm (6.3 in)
21 May 1983
Jun
257.8 mm (10.1 in)
6 June 2019
Jul
219.7 mm (8.6 in)
16 July 1952
Aug
558.8 mm (22.0 in)
29 August 1962
Sep
187.5 mm (7.4 in)
20 September 1979
Oct
146.1 mm (5.8 in)
28 October 1985
Nov
244.6 mm (9.6 in)
10 November 1940
Dec
229.1 mm (9.0 in)
5 December 2016
Period of Record Coverage
1939 to 2020
Complete yearUnder 90 percent of days
79 years of record at Hackberry 8 SSW, 1939 to 2020. 10 years have data for under 90 percent of days and are left out of rankings: 1939, 1940, 1941, 1954, 1957, 1958, 1995, 2005 and others.
Cooler than the station meanWarmer than the station mean
One stripe for each of 64 complete years at Hackberry 8 SSW, 1942 to 2017. Blue stripes are years cooler than the station's own mean of 20.3 C (68.5 F); red stripes are warmer. The coolest year was 1947, at 19.0 C (66.1 F), and the warmest was 2017, at 22.0 C (71.6 F). The strongest colour marks a difference of 1.8 C (3.2 F).
Annual mean temperature at Hackberry 8 SSW as warming stripes, 1942 to 2017
Year
Annual mean temperature
Difference from the station mean
1942
19.9 C
-0.44 C
1944
20.2 C
-0.10 C
1945
20.5 C
+0.18 C
1946
20.5 C
+0.15 C
1947
19.0 C
-1.34 C
1948
19.4 C
-0.88 C
1949
20.2 C
-0.11 C
1950
20.5 C
+0.18 C
1951
19.7 C
-0.65 C
1952
19.9 C
-0.40 C
1953
20.6 C
+0.28 C
1955
20.6 C
+0.26 C
1956
20.7 C
+0.35 C
1958
20.0 C
-0.27 C
1959
20.1 C
-0.23 C
1960
19.5 C
-0.84 C
1961
19.6 C
-0.68 C
1962
20.1 C
-0.22 C
1963
19.7 C
-0.62 C
1964
19.9 C
-0.39 C
1965
20.4 C
+0.05 C
1967
19.6 C
-0.66 C
1968
19.1 C
-1.25 C
1969
19.8 C
-0.52 C
1970
19.1 C
-1.16 C
1971
20.3 C
-0.02 C
1972
20.2 C
-0.07 C
1973
20.4 C
+0.05 C
1974
20.6 C
+0.30 C
1975
20.3 C
-0.05 C
1976
19.2 C
-1.15 C
1977
20.2 C
-0.06 C
1978
19.7 C
-0.63 C
1979
19.5 C
-0.85 C
1980
20.2 C
-0.15 C
1981
20.1 C
-0.23 C
1982
19.9 C
-0.38 C
1983
19.3 C
-1.04 C
1984
20.5 C
+0.21 C
1985
20.2 C
-0.15 C
1986
20.8 C
+0.49 C
1987
20.4 C
+0.08 C
1988
20.1 C
-0.19 C
1989
20.4 C
+0.09 C
1990
21.6 C
+1.31 C
1991
20.9 C
+0.61 C
1992
20.7 C
+0.36 C
1993
20.4 C
+0.07 C
1995
21.1 C
+0.76 C
1996
20.4 C
+0.10 C
1997
20.5 C
+0.20 C
1998
21.8 C
+1.52 C
1999
21.6 C
+1.34 C
2000
21.0 C
+0.66 C
2001
20.9 C
+0.55 C
2002
20.2 C
-0.09 C
2004
21.2 C
+0.86 C
2011
20.8 C
+0.50 C
2012
21.3 C
+0.95 C
2013
20.1 C
-0.24 C
2014
19.7 C
-0.59 C
2015
21.2 C
+0.86 C
2016
21.8 C
+1.48 C
2017
22.0 C
+1.70 C
The annual mean temperature here has risen by 0.2 C (0.1 to 0.2) per decade over 1942 to 2017. In Fahrenheit: 0.3 F (0.2 to 0.4) 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 Hackberry 8 SSW
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
0.2 C (0.1 to 0.2) per decade
0.3 F (0.2 to 0.4) per decade
1942 to 2017
64
Rise
Mean daily maximum
0.06 C (-0.02 to 0.14) per decade
0.10 F (-0.04 to 0.24) per decade
1942 to 2017
64
Not clearly different from zero
Mean daily minimum
0.3 C (0.2 to 0.4) per decade
0.5 F (0.4 to 0.7) per decade
1942 to 2017
64
Rise
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
1939 to 2023
Yearly extremes at Hackberry 8 SSW: 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)
2000
35.6 C (96.1 F)
79
Coldest night (TNn)
-11.7 C (10.9 F)
1951
-3.9 C (25.0 F)
79
Wettest day (Rx1day)
558.8 mm (22.0 in)
1962
118.1 mm (4.6 in)
81
Wettest five days (Rx5day)
621.1 mm (24.5 in)
1962
164.6 mm (6.5 in)
81
Longest dry spell (CDD)
52 days
2010
23 days
81
Hottest day (TXx)
The hottest day of the year at Hackberry 8 SSW, 1939 to 2023. The record is 41.1 C (106.0 F) in 2000, marked on the chart; the median year is 35.6 C (96.1 F).
Hottest day (TXx) at Hackberry 8 SSW by year
Year
Hottest day (TXx)
1939
38.3 C (100.9 F)
1940
35.0 C (95.0 F)
1941
35.6 C (96.1 F)
1942
35.6 C (96.1 F)
1943
38.3 C (100.9 F)
1944
36.7 C (98.1 F)
1945
35.6 C (96.1 F)
1946
35.6 C (96.1 F)
1947
37.2 C (99.0 F)
1948
36.7 C (98.1 F)
1949
37.2 C (99.0 F)
1950
37.2 C (99.0 F)
1951
37.2 C (99.0 F)
1952
34.4 C (93.9 F)
1953
36.7 C (98.1 F)
1954
37.8 C (100.0 F)
1955
35.6 C (96.1 F)
1956
35.6 C (96.1 F)
1957
33.3 C (91.9 F)
1958
36.7 C (98.1 F)
1959
35.0 C (95.0 F)
1960
36.7 C (98.1 F)
1961
35.6 C (96.1 F)
1962
38.3 C (100.9 F)
1963
35.6 C (96.1 F)
1964
35.6 C (96.1 F)
1965
34.4 C (93.9 F)
1966
34.4 C (93.9 F)
1967
34.4 C (93.9 F)
1968
33.9 C (93.0 F)
1969
35.6 C (96.1 F)
1970
36.1 C (97.0 F)
1971
33.9 C (93.0 F)
1972
34.4 C (93.9 F)
1973
33.9 C (93.0 F)
1974
35.6 C (96.1 F)
1975
34.4 C (93.9 F)
1976
34.4 C (93.9 F)
1977
35.6 C (96.1 F)
1978
35.0 C (95.0 F)
1979
35.0 C (95.0 F)
1980
37.2 C (99.0 F)
1981
35.6 C (96.1 F)
1982
34.4 C (93.9 F)
1983
35.6 C (96.1 F)
1984
36.7 C (98.1 F)
1985
35.6 C (96.1 F)
1986
35.6 C (96.1 F)
1987
35.6 C (96.1 F)
1988
35.6 C (96.1 F)
1989
36.7 C (98.1 F)
1990
37.2 C (99.0 F)
1991
35.6 C (96.1 F)
1992
34.4 C (93.9 F)
1993
36.1 C (97.0 F)
1994
33.3 C (91.9 F)
1995
37.2 C (99.0 F)
1996
36.1 C (97.0 F)
1997
36.7 C (98.1 F)
1998
36.7 C (98.1 F)
1999
39.4 C (102.9 F)
2000
41.1 C (106.0 F)
2001
37.2 C (99.0 F)
2002
36.7 C (98.1 F)
2003
36.1 C (97.0 F)
2004
37.2 C (99.0 F)
2005
36.1 C (97.0 F)
2009
35.0 C (95.0 F)
2010
36.1 C (97.0 F)
2011
37.8 C (100.0 F)
2012
36.7 C (98.1 F)
2013
36.1 C (97.0 F)
2014
35.6 C (96.1 F)
2015
37.8 C (100.0 F)
2016
35.6 C (96.1 F)
2017
35.0 C (95.0 F)
2018
35.6 C (96.1 F)
2019
36.1 C (97.0 F)
2020
33.9 C (93.0 F)
2022
n/a
2023
n/a
Coldest night (TNn)
The coldest night of the year at Hackberry 8 SSW, 1939 to 2023. The record is -11.7 C (10.9 F) in 1951, marked on the chart; the median year is -3.9 C (25.0 F).
Coldest night (TNn) at Hackberry 8 SSW by year
Year
Coldest night (TNn)
1939
-1.1 C (30.0 F)
1940
-9.4 C (15.1 F)
1941
-1.1 C (30.0 F)
1942
-6.7 C (19.9 F)
1943
-5.6 C (21.9 F)
1944
-2.8 C (27.0 F)
1945
-4.4 C (24.1 F)
1946
-2.8 C (27.0 F)
1947
-5.6 C (21.9 F)
1948
-10.0 C (14.0 F)
1949
-8.3 C (17.1 F)
1950
-9.4 C (15.1 F)
1951
-11.7 C (10.9 F)
1952
-5.0 C (23.0 F)
1953
-4.4 C (24.1 F)
1954
-3.3 C (26.1 F)
1955
-6.1 C (21.0 F)
1956
-1.7 C (28.9 F)
1957
-3.9 C (25.0 F)
1958
-5.6 C (21.9 F)
1959
-3.9 C (25.0 F)
1960
-2.8 C (27.0 F)
1961
-4.4 C (24.1 F)
1962
-9.4 C (15.1 F)
1963
-7.8 C (18.0 F)
1964
-5.6 C (21.9 F)
1965
-5.6 C (21.9 F)
1966
-6.7 C (19.9 F)
1967
-2.8 C (27.0 F)
1968
-6.1 C (21.0 F)
1969
-3.9 C (25.0 F)
1970
-6.7 C (19.9 F)
1971
-1.7 C (28.9 F)
1972
-4.4 C (24.1 F)
1973
-3.9 C (25.0 F)
1974
-0.6 C (30.9 F)
1975
-2.8 C (27.0 F)
1976
-5.6 C (21.9 F)
1977
-6.7 C (19.9 F)
1978
-3.9 C (25.0 F)
1979
-6.7 C (19.9 F)
1980
-3.9 C (25.0 F)
1981
-5.6 C (21.9 F)
1982
-10.6 C (12.9 F)
1983
-11.1 C (12.0 F)
1984
-3.3 C (26.1 F)
1985
-8.3 C (17.1 F)
1986
-3.3 C (26.1 F)
1987
0.0 C (32.0 F)
1988
-3.3 C (26.1 F)
1989
-11.1 C (12.0 F)
1990
-6.7 C (19.9 F)
1991
-1.1 C (30.0 F)
1992
-1.7 C (28.9 F)
1993
-0.6 C (30.9 F)
1994
-3.3 C (26.1 F)
1995
-1.1 C (30.0 F)
1996
-6.7 C (19.9 F)
1997
-2.2 C (28.0 F)
1998
-0.6 C (30.9 F)
1999
-2.8 C (27.0 F)
2000
-2.2 C (28.0 F)
2001
-3.3 C (26.1 F)
2002
-6.7 C (19.9 F)
2003
-3.9 C (25.0 F)
2004
-1.7 C (28.9 F)
2005
0.0 C (32.0 F)
2009
-1.1 C (30.0 F)
2010
-5.6 C (21.9 F)
2011
-5.0 C (23.0 F)
2012
-0.6 C (30.9 F)
2013
0.0 C (32.0 F)
2014
-5.6 C (21.9 F)
2015
-3.9 C (25.0 F)
2016
-0.6 C (30.9 F)
2017
-5.0 C (23.0 F)
2018
-7.2 C (19.0 F)
2019
-3.9 C (25.0 F)
2020
1.7 C (35.1 F)
2022
n/a
2023
n/a
Wettest day (Rx1day)
The wettest day of the year at Hackberry 8 SSW, 1939 to 2023. The record is 558.8 mm (22.0 in) in 1962, marked on the chart; the median year is 118.1 mm (4.6 in).
Wettest day (Rx1day) at Hackberry 8 SSW by year
Year
Wettest day (Rx1day)
1939
83.1 mm (3.3 in)
1940
244.6 mm (9.6 in)
1941
105.7 mm (4.2 in)
1942
107.4 mm (4.2 in)
1943
127.5 mm (5.0 in)
1944
118.1 mm (4.6 in)
1945
63.0 mm (2.5 in)
1946
108.0 mm (4.3 in)
1947
89.2 mm (3.5 in)
1948
44.7 mm (1.8 in)
1949
119.4 mm (4.7 in)
1950
132.3 mm (5.2 in)
1951
61.0 mm (2.4 in)
1952
219.7 mm (8.6 in)
1953
88.1 mm (3.5 in)
1954
60.5 mm (2.4 in)
1955
153.4 mm (6.0 in)
1956
71.4 mm (2.8 in)
1957
193.0 mm (7.6 in)
1958
113.5 mm (4.5 in)
1959
119.4 mm (4.7 in)
1960
73.7 mm (2.9 in)
1961
129.8 mm (5.1 in)
1962
558.8 mm (22.0 in)
1963
86.4 mm (3.4 in)
1964
178.8 mm (7.0 in)
1965
164.6 mm (6.5 in)
1966
118.9 mm (4.7 in)
1967
146.6 mm (5.8 in)
1968
75.7 mm (3.0 in)
1969
107.2 mm (4.2 in)
1970
91.7 mm (3.6 in)
1971
129.5 mm (5.1 in)
1972
106.2 mm (4.2 in)
1973
153.9 mm (6.1 in)
1974
137.2 mm (5.4 in)
1975
101.3 mm (4.0 in)
1976
88.1 mm (3.5 in)
1977
92.7 mm (3.6 in)
1978
78.2 mm (3.1 in)
1979
187.5 mm (7.4 in)
1980
128.3 mm (5.1 in)
1981
135.4 mm (5.3 in)
1982
65.5 mm (2.6 in)
1983
159.0 mm (6.3 in)
1984
120.7 mm (4.8 in)
1985
146.1 mm (5.8 in)
1986
83.3 mm (3.3 in)
1987
75.9 mm (3.0 in)
1988
126.7 mm (5.0 in)
1989
126.5 mm (5.0 in)
1990
142.7 mm (5.6 in)
1991
97.8 mm (3.9 in)
1992
112.0 mm (4.4 in)
1993
124.5 mm (4.9 in)
1994
66.8 mm (2.6 in)
1995
134.6 mm (5.3 in)
1996
115.6 mm (4.6 in)
1997
139.7 mm (5.5 in)
1998
152.4 mm (6.0 in)
1999
66.0 mm (2.6 in)
2000
104.1 mm (4.1 in)
2001
160.0 mm (6.3 in)
2002
137.7 mm (5.4 in)
2003
140.7 mm (5.5 in)
2004
86.9 mm (3.4 in)
2005
113.8 mm (4.5 in)
2009
85.1 mm (3.4 in)
2010
81.3 mm (3.2 in)
2011
84.8 mm (3.3 in)
2012
119.9 mm (4.7 in)
2013
125.5 mm (4.9 in)
2014
113.3 mm (4.5 in)
2015
102.4 mm (4.0 in)
2016
229.1 mm (9.0 in)
2017
283.0 mm (11.1 in)
2018
111.5 mm (4.4 in)
2019
257.8 mm (10.1 in)
2020
120.4 mm (4.7 in)
2022
139.4 mm (5.5 in)
2023
91.2 mm (3.6 in)
Wettest five days (Rx5day)
The wettest five days of the year at Hackberry 8 SSW, 1939 to 2023. The record is 621.1 mm (24.5 in) in 1962, marked on the chart; the median year is 164.6 mm (6.5 in).
Wettest five days (Rx5day) at Hackberry 8 SSW by year
Year
Wettest five days (Rx5day)
1939
92.2 mm (3.6 in)
1940
298.6 mm (11.8 in)
1941
170.7 mm (6.7 in)
1942
196.4 mm (7.7 in)
1943
195.8 mm (7.7 in)
1944
151.1 mm (5.9 in)
1945
92.0 mm (3.6 in)
1946
213.3 mm (8.4 in)
1947
160.6 mm (6.3 in)
1948
68.8 mm (2.7 in)
1949
194.6 mm (7.7 in)
1950
156.2 mm (6.1 in)
1951
84.4 mm (3.3 in)
1952
370.3 mm (14.6 in)
1953
156.4 mm (6.2 in)
1954
71.2 mm (2.8 in)
1955
158.7 mm (6.2 in)
1956
153.5 mm (6.0 in)
1957
209.6 mm (8.3 in)
1958
157.7 mm (6.2 in)
1959
225.1 mm (8.9 in)
1960
255.0 mm (10.0 in)
1961
162.3 mm (6.4 in)
1962
621.1 mm (24.5 in)
1963
192.8 mm (7.6 in)
1964
330.6 mm (13.0 in)
1965
194.7 mm (7.7 in)
1966
128.5 mm (5.1 in)
1967
203.8 mm (8.0 in)
1968
128.5 mm (5.1 in)
1969
283.7 mm (11.2 in)
1970
123.2 mm (4.9 in)
1971
143.2 mm (5.6 in)
1972
129.1 mm (5.1 in)
1973
241.3 mm (9.5 in)
1974
148.7 mm (5.9 in)
1975
232.8 mm (9.2 in)
1976
93.7 mm (3.7 in)
1977
193.0 mm (7.6 in)
1978
111.5 mm (4.4 in)
1979
318.3 mm (12.5 in)
1980
243.1 mm (9.6 in)
1981
177.6 mm (7.0 in)
1982
114.9 mm (4.5 in)
1983
212.1 mm (8.4 in)
1984
242.4 mm (9.5 in)
1985
261.2 mm (10.3 in)
1986
110.7 mm (4.4 in)
1987
120.9 mm (4.8 in)
1988
194.0 mm (7.6 in)
1989
288.0 mm (11.3 in)
1990
203.2 mm (8.0 in)
1991
164.6 mm (6.5 in)
1992
118.4 mm (4.7 in)
1993
161.3 mm (6.4 in)
1994
144.5 mm (5.7 in)
1995
156.0 mm (6.1 in)
1996
224.3 mm (8.8 in)
1997
168.1 mm (6.6 in)
1998
247.9 mm (9.8 in)
1999
130.0 mm (5.1 in)
2000
194.3 mm (7.6 in)
2001
372.1 mm (14.6 in)
2002
264.9 mm (10.4 in)
2003
146.3 mm (5.8 in)
2004
151.9 mm (6.0 in)
2005
152.9 mm (6.0 in)
2009
95.2 mm (3.7 in)
2010
90.2 mm (3.6 in)
2011
129.1 mm (5.1 in)
2012
230.7 mm (9.1 in)
2013
196.4 mm (7.7 in)
2014
202.4 mm (8.0 in)
2015
115.9 mm (4.6 in)
2016
252.0 mm (9.9 in)
2017
450.6 mm (17.7 in)
2018
131.1 mm (5.2 in)
2019
258.1 mm (10.2 in)
2020
126.7 mm (5.0 in)
2022
0.0 mm (0.00 in)
2023
0.0 mm (0.00 in)
Longest dry spell (CDD)
The longest dry spell of the year at Hackberry 8 SSW, 1939 to 2023. The record is 52 days in 2010, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Hackberry 8 SSW by year
Year
Longest dry spell (CDD)
1939
18 days
1940
31 days
1941
18 days
1942
28 days
1943
28 days
1944
34 days
1945
20 days
1946
19 days
1947
37 days
1948
48 days
1949
28 days
1950
29 days
1951
26 days
1952
45 days
1953
51 days
1954
23 days
1955
38 days
1956
25 days
1957
14 days
1958
14 days
1959
22 days
1960
27 days
1961
26 days
1962
28 days
1963
46 days
1964
23 days
1965
29 days
1966
14 days
1967
26 days
1968
17 days
1969
19 days
1970
21 days
1971
28 days
1972
19 days
1973
18 days
1974
19 days
1975
27 days
1976
16 days
1977
21 days
1978
43 days
1979
31 days
1980
25 days
1981
24 days
1982
21 days
1983
19 days
1984
26 days
1985
25 days
1986
22 days
1987
23 days
1988
15 days
1989
23 days
1990
16 days
1991
34 days
1992
16 days
1993
17 days
1994
25 days
1995
22 days
1996
20 days
1997
19 days
1998
33 days
1999
26 days
2000
19 days
2001
38 days
2002
33 days
2003
41 days
2004
19 days
2005
16 days
2009
9 days
2010
52 days
2011
27 days
2012
17 days
2013
20 days
2014
23 days
2015
25 days
2016
37 days
2017
24 days
2018
17 days
2019
19 days
2020
18 days
2022
5 days
2023
31 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
42 years with a frost
Across 42 years with a frost, the median last spring frost at Hackberry 8 SSW falls on 14 February and the median first autumn frost on 3 December, which leaves a median of 295 days between them.
Fitted over all years, the growing season changes by +4.6 days per decade at this station.
Frost dates and growing season at Hackberry 8 SSW
Measure
Median, all years
Earliest period
Recent period (1960 to 2017)
Recent against earliest
Fitted trend
Last spring frost
14 February
n/a
13 February
n/a
-2.5 days per decade
First autumn frost
3 December
n/a
8 December
n/a
+2.1 days per decade
Growing days
295 days
n/a
295 days
n/a
+4.6 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
74 years, 1940 to 2019
A day with at least 111.6 mm (4.4 in) of rain is expected about once in 2 years. A day with at least 363.1 mm (14.3 in) of rain is expected about once in 100 years.
Rainfall return levels at Hackberry 8 SSW: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
111.6 mm (4.4 in)
5 years
157.8 mm (6.2 in)
10 years
195.5 mm (7.7 in)
25 years
252.9 mm (10.0 in)
50 years
303.9 mm (12.0 in)
100 years
363.1 mm (14.3 in)
Longer than the 74 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, 74 years of values from 1940 to 2019.
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: 558.8 mm (22.0 in) in 1962; 283.0 mm (11.1 in) in 2017; 257.8 mm (10.1 in) in 2019.
Station Changes
2 suspected
2 changes were suspected in the annual mean temperature of Hackberry 8 SSW, at 1987 and 2002. Each is measured against neighbouring stations.
Relative to 5 neighbouring stations, the station's annual mean temperature from 1987 ran 0.4 C (0.8 F) higher than in the years before (likely change).
Relative to 5 neighbouring stations, the station's annual mean temperature from 2002 ran 0.3 C (0.6 F) lower than in the years before (possible change).
Suspected changes in the annual mean temperature at Hackberry 8 SSW, against neighbouring stations
Year
Shift (C)
Shift (F)
Strength
Neighbours
1987
+0.4
+0.8
likely
5
2002
-0.3
-0.6
possible
5
Possible change at the station (a move, a new instrument or a new site); the record is kept as measured. A "likely" change has a larger test statistic than a "possible" one. Neither says why the station differs from its neighbours. How changes are found, and the largest ones.
Download the Data
Data for Hackberry 8 SSW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Hackberry 8 SSW 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.