Record envelope, standing records and threshold days for De Quincy (USC00162361), Louisiana, United States, with 64 years of record.
Key Facts for De Quincy
De Quincy (USC00162361) is a weather station in Louisiana, United States at 30.43 latitude and -93.47 longitude, 25 m (81 ft) above sea level.
The station reports from 1940 to 2003, 64 years of record.
1,464 records set at De Quincy still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
De Quincy tied a daily record high minimum temperature of 23.3 C (73.9 F) on 27 August 2003.
About the Station
Location: Louisiana, United States, 30.43 latitude, -93.47 longitude.
Elevation: 25 m (81 ft).
Period of record: 1940 to 2003, 64 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 De Quincy. 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 De Quincy, with 2026 drawn through them
Month
Highest record high
Lowest record low
2026 highest maximum
2026 lowest minimum
Jan
27.8 C (82.0 F)
-12.2 C (10.0 F)
n/a
n/a
Feb
30.6 C (87.1 F)
-10.0 C (14.0 F)
n/a
n/a
Mar
32.8 C (91.0 F)
-6.7 C (19.9 F)
n/a
n/a
Apr
33.9 C (93.0 F)
-0.6 C (30.9 F)
n/a
n/a
May
35.6 C (96.1 F)
5.0 C (41.0 F)
n/a
n/a
Jun
38.3 C (100.9 F)
10.0 C (50.0 F)
n/a
n/a
Jul
40.6 C (105.1 F)
15.0 C (59.0 F)
n/a
n/a
Aug
40.6 C (105.1 F)
12.8 C (55.0 F)
n/a
n/a
Sep
41.7 C (107.1 F)
6.1 C (43.0 F)
n/a
n/a
Oct
35.6 C (96.1 F)
-2.2 C (28.0 F)
n/a
n/a
Nov
31.7 C (89.1 F)
-7.2 C (19.0 F)
n/a
n/a
Dec
29.4 C (84.9 F)
-12.8 C (9.0 F)
n/a
n/a
Which Years Hold Standing Records
1,464 standing records
Year with most
1,464 records at De Quincy still stand. 1957 holds the most, with 76.
Standing records at De Quincy by the year they were set
Year set
Standing records
1954
39
1955
66
1956
72
1957
76
1958
33
1959
25
1960
33
1961
32
1962
51
1963
43
1964
25
1965
26
1966
31
1967
36
1968
28
1969
33
1970
39
1971
27
1972
33
1973
29
1974
45
1975
24
1976
44
1977
20
1978
36
1979
22
1980
52
1981
20
1982
25
1983
31
1984
40
1985
22
1986
21
1987
25
1988
17
1989
27
1995
10
1996
31
1997
25
1998
29
1999
24
2000
30
2001
31
2002
27
2003
9
All-Time Record Progression
1 new records
1 all-time records were set at De Quincy between 1 September 2000 and 1 September 2000. Each dot is a new record.
When De Quincy set new all-time records
Date
Kind
Detail
2000-09-01
Record high maximum temperature
Record high maximum temperature 41.7 C (107.1 F)
Wettest Day of Each Month
Aug: 257.6 mm (10.1 in)
The wettest day on record for each calendar month at De Quincy. The most was 257.6 mm (10.1 in) on 8 August 1940.
Record daily precipitation for each month at De Quincy
Month
Record daily precipitation (mm)
Date
Jan
108.0 mm (4.3 in)
27 January 1996
Feb
138.4 mm (5.4 in)
5 February 1955
Mar
176.8 mm (7.0 in)
25 March 1976
Apr
160.0 mm (6.3 in)
25 April 1953
May
141.7 mm (5.6 in)
20 May 1955
Jun
113.0 mm (4.4 in)
21 June 1947
Jul
194.3 mm (7.6 in)
28 July 1943
Aug
257.6 mm (10.1 in)
8 August 1940
Sep
241.3 mm (9.5 in)
17 September 1964
Oct
178.1 mm (7.0 in)
12 October 1970
Nov
209.3 mm (8.2 in)
28 November 2001
Dec
182.4 mm (7.2 in)
4 December 2002
Period of Record Coverage
1954 to 2003
Complete yearUnder 90 percent of days
45 years of record at De Quincy, 1954 to 2003. 4 years have data for under 90 percent of days and are left out of rankings: 1954, 1989, 1995, 2003.
Cooler than the station meanWarmer than the station mean
One stripe for each of 35 complete years at De Quincy, 1956 to 2002. Blue stripes are years cooler than the station's own mean of 19.3 C (66.7 F); red stripes are warmer. The coolest year was 1976, at 17.7 C (63.9 F), and the warmest was 1957, at 20.7 C (69.2 F). The strongest colour marks a difference of 1.6 C (2.9 F).
Annual mean temperature at De Quincy as warming stripes, 1956 to 2002
Year
Annual mean temperature
Difference from the station mean
1956
20.6 C
+1.35 C
1957
20.7 C
+1.40 C
1958
19.6 C
+0.37 C
1959
19.7 C
+0.42 C
1960
19.6 C
+0.35 C
1961
19.6 C
+0.32 C
1962
19.7 C
+0.47 C
1963
19.5 C
+0.27 C
1964
19.5 C
+0.26 C
1965
20.0 C
+0.73 C
1966
18.8 C
-0.42 C
1968
18.6 C
-0.71 C
1971
19.6 C
+0.37 C
1972
19.2 C
-0.06 C
1973
18.9 C
-0.41 C
1974
19.7 C
+0.40 C
1976
17.7 C
-1.56 C
1978
18.9 C
-0.41 C
1979
18.5 C
-0.72 C
1980
19.1 C
-0.14 C
1981
18.9 C
-0.34 C
1982
19.3 C
+0.02 C
1983
18.0 C
-1.31 C
1984
19.1 C
-0.14 C
1985
19.3 C
+0.04 C
1986
19.9 C
+0.59 C
1987
19.0 C
-0.25 C
1988
19.0 C
-0.22 C
1996
18.9 C
-0.39 C
1997
18.6 C
-0.70 C
1998
19.9 C
+0.61 C
1999
19.4 C
+0.09 C
2000
19.2 C
-0.11 C
2001
19.1 C
-0.17 C
2002
19.1 C
-0.12 C
The annual mean temperature here has fallen by 0.17 C (0.04 to 0.31) per decade over 1956 to 2002. In Fahrenheit: 0.3 F (0.1 to 0.6) per decade. The slope is a straight line fitted to 35 complete years; the brackets give its 95 percent interval.
Fitted temperature trends per decade at De Quincy
Measure
Per decade (C)
Per decade (F)
Period
Complete years
Reading
Annual mean temperature
-0.17 C (-0.31 to -0.04) per decade
-0.3 F (-0.6 to -0.1) per decade
1956 to 2002
35
Fall
Mean daily maximum
-0.2 C (-0.4 to -0.1) per decade
-0.4 F (-0.6 to -0.1) per decade
1956 to 2002
35
Fall
Mean daily minimum
-0.1 C (-0.3 to 0.1) per decade
-0.2 F (-0.6 to 0.1) per decade
1956 to 2002
35
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
1940 to 2003
Yearly extremes at De Quincy: the record and the median year
Measure
Record
Year of the record
Median year
Years with a value
Hottest day (TXx)
41.7 C (107.1 F)
2000
36.7 C (98.1 F)
45
Coldest night (TNn)
-12.8 C (9.0 F)
1983
-6.7 C (19.9 F)
45
Wettest day (Rx1day)
257.6 mm (10.1 in)
1940
113.0 mm (4.4 in)
59
Wettest five days (Rx5day)
346.9 mm (13.7 in)
1985
173.7 mm (6.8 in)
59
Longest dry spell (CDD)
51 days
1953
23 days
59
Hottest day (TXx)
The hottest day of the year at De Quincy, 1940 to 2003. The record is 41.7 C (107.1 F) in 2000, marked on the chart; the median year is 36.7 C (98.1 F).
Hottest day (TXx) at De Quincy by year
Year
Hottest day (TXx)
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
38.3 C (100.9 F)
1955
36.1 C (97.0 F)
1956
37.8 C (100.0 F)
1957
36.7 C (98.1 F)
1958
37.2 C (99.0 F)
1959
35.0 C (95.0 F)
1960
37.8 C (100.0 F)
1961
35.0 C (95.0 F)
1962
40.6 C (105.1 F)
1963
37.2 C (99.0 F)
1964
38.3 C (100.9 F)
1965
36.7 C (98.1 F)
1966
36.7 C (98.1 F)
1967
36.1 C (97.0 F)
1968
35.0 C (95.0 F)
1969
37.8 C (100.0 F)
1970
37.2 C (99.0 F)
1971
36.1 C (97.0 F)
1972
36.1 C (97.0 F)
1973
35.6 C (96.1 F)
1974
36.7 C (98.1 F)
1975
35.0 C (95.0 F)
1976
35.6 C (96.1 F)
1977
36.7 C (98.1 F)
1978
37.2 C (99.0 F)
1979
36.1 C (97.0 F)
1980
40.6 C (105.1 F)
1981
36.7 C (98.1 F)
1982
36.1 C (97.0 F)
1983
36.1 C (97.0 F)
1984
37.2 C (99.0 F)
1985
37.2 C (99.0 F)
1986
37.2 C (99.0 F)
1987
36.1 C (97.0 F)
1988
36.7 C (98.1 F)
1989
35.0 C (95.0 F)
1995
36.7 C (98.1 F)
1996
35.0 C (95.0 F)
1997
35.6 C (96.1 F)
1998
40.0 C (104.0 F)
1999
38.3 C (100.9 F)
2000
41.7 C (107.1 F)
2001
35.0 C (95.0 F)
2002
35.6 C (96.1 F)
2003
37.2 C (99.0 F)
Coldest night (TNn)
The coldest night of the year at De Quincy, 1940 to 2003. The record is -12.8 C (9.0 F) in 1983, marked on the chart; the median year is -6.7 C (19.9 F).
Coldest night (TNn) at De Quincy by year
Year
Coldest night (TNn)
1940
n/a
1941
n/a
1942
n/a
1943
n/a
1944
n/a
1945
n/a
1946
n/a
1947
n/a
1948
n/a
1949
n/a
1950
n/a
1951
n/a
1952
n/a
1953
n/a
1954
-5.6 C (21.9 F)
1955
-8.3 C (17.1 F)
1956
-5.0 C (23.0 F)
1957
-6.1 C (21.0 F)
1958
-6.1 C (21.0 F)
1959
-5.6 C (21.9 F)
1960
-6.1 C (21.0 F)
1961
-5.6 C (21.9 F)
1962
-11.7 C (10.9 F)
1963
-10.0 C (14.0 F)
1964
-9.4 C (15.1 F)
1965
-8.3 C (17.1 F)
1966
-8.9 C (16.0 F)
1967
-5.6 C (21.9 F)
1968
-6.1 C (21.0 F)
1969
-8.9 C (16.0 F)
1970
-9.4 C (15.1 F)
1971
-5.0 C (23.0 F)
1972
-7.2 C (19.0 F)
1973
-7.2 C (19.0 F)
1974
-4.4 C (24.1 F)
1975
-6.1 C (21.0 F)
1976
-7.2 C (19.0 F)
1977
-9.4 C (15.1 F)
1978
-7.8 C (18.0 F)
1979
-8.9 C (16.0 F)
1980
-6.1 C (21.0 F)
1981
-8.3 C (17.1 F)
1982
-12.2 C (10.0 F)
1983
-12.8 C (9.0 F)
1984
-8.3 C (17.1 F)
1985
-11.1 C (12.0 F)
1986
-4.4 C (24.1 F)
1987
-5.0 C (23.0 F)
1988
-6.7 C (19.9 F)
1989
-4.4 C (24.1 F)
1995
-3.3 C (26.1 F)
1996
-10.0 C (14.0 F)
1997
-5.6 C (21.9 F)
1998
-2.8 C (27.0 F)
1999
-6.1 C (21.0 F)
2000
-5.6 C (21.9 F)
2001
-6.7 C (19.9 F)
2002
-7.8 C (18.0 F)
2003
-5.6 C (21.9 F)
Wettest day (Rx1day)
The wettest day of the year at De Quincy, 1940 to 2003. The record is 257.6 mm (10.1 in) in 1940, marked on the chart; the median year is 113.0 mm (4.4 in).
Wettest day (Rx1day) at De Quincy by year
Year
Wettest day (Rx1day)
1940
257.6 mm (10.1 in)
1941
127.0 mm (5.0 in)
1942
70.6 mm (2.8 in)
1943
194.3 mm (7.6 in)
1944
160.8 mm (6.3 in)
1945
119.4 mm (4.7 in)
1946
66.0 mm (2.6 in)
1947
113.0 mm (4.4 in)
1948
57.2 mm (2.3 in)
1949
98.3 mm (3.9 in)
1950
103.9 mm (4.1 in)
1951
74.4 mm (2.9 in)
1952
159.3 mm (6.3 in)
1953
160.0 mm (6.3 in)
1954
65.5 mm (2.6 in)
1955
141.7 mm (5.6 in)
1956
113.0 mm (4.4 in)
1957
92.7 mm (3.6 in)
1958
166.4 mm (6.6 in)
1959
169.7 mm (6.7 in)
1960
81.8 mm (3.2 in)
1961
122.4 mm (4.8 in)
1962
128.3 mm (5.1 in)
1963
52.3 mm (2.1 in)
1964
241.3 mm (9.5 in)
1965
121.2 mm (4.8 in)
1966
132.3 mm (5.2 in)
1967
101.6 mm (4.0 in)
1968
82.6 mm (3.3 in)
1969
139.7 mm (5.5 in)
1970
178.1 mm (7.0 in)
1971
102.9 mm (4.1 in)
1972
68.6 mm (2.7 in)
1973
148.6 mm (5.9 in)
1974
56.6 mm (2.2 in)
1975
96.5 mm (3.8 in)
1976
176.8 mm (7.0 in)
1977
123.2 mm (4.9 in)
1978
102.9 mm (4.1 in)
1979
152.4 mm (6.0 in)
1980
107.4 mm (4.2 in)
1981
80.0 mm (3.1 in)
1982
177.8 mm (7.0 in)
1983
111.8 mm (4.4 in)
1984
109.2 mm (4.3 in)
1985
142.2 mm (5.6 in)
1986
109.2 mm (4.3 in)
1987
101.3 mm (4.0 in)
1988
70.6 mm (2.8 in)
1989
123.2 mm (4.9 in)
1995
148.6 mm (5.9 in)
1996
108.0 mm (4.3 in)
1997
81.3 mm (3.2 in)
1998
157.5 mm (6.2 in)
1999
78.5 mm (3.1 in)
2000
101.6 mm (4.0 in)
2001
209.3 mm (8.2 in)
2002
182.4 mm (7.2 in)
2003
99.1 mm (3.9 in)
Wettest five days (Rx5day)
The wettest five days of the year at De Quincy, 1940 to 2003. The record is 346.9 mm (13.7 in) in 1985, marked on the chart; the median year is 173.7 mm (6.8 in).
Wettest five days (Rx5day) at De Quincy by year
Year
Wettest five days (Rx5day)
1940
332.3 mm (13.1 in)
1941
289.3 mm (11.4 in)
1942
138.1 mm (5.4 in)
1943
240.8 mm (9.5 in)
1944
203.2 mm (8.0 in)
1945
167.9 mm (6.6 in)
1946
145.3 mm (5.7 in)
1947
147.1 mm (5.8 in)
1948
76.5 mm (3.0 in)
1949
178.8 mm (7.0 in)
1950
156.5 mm (6.2 in)
1951
83.1 mm (3.3 in)
1952
286.0 mm (11.3 in)
1953
173.7 mm (6.8 in)
1954
85.5 mm (3.4 in)
1955
217.6 mm (8.6 in)
1956
179.9 mm (7.1 in)
1957
139.4 mm (5.5 in)
1958
277.0 mm (10.9 in)
1959
243.4 mm (9.6 in)
1960
145.0 mm (5.7 in)
1961
170.2 mm (6.7 in)
1962
143.6 mm (5.7 in)
1963
105.4 mm (4.1 in)
1964
241.3 mm (9.5 in)
1965
176.0 mm (6.9 in)
1966
133.6 mm (5.3 in)
1967
122.7 mm (4.8 in)
1968
139.8 mm (5.5 in)
1969
174.5 mm (6.9 in)
1970
291.9 mm (11.5 in)
1971
180.9 mm (7.1 in)
1972
105.1 mm (4.1 in)
1973
229.6 mm (9.0 in)
1974
112.3 mm (4.4 in)
1975
128.2 mm (5.0 in)
1976
227.3 mm (8.9 in)
1977
168.4 mm (6.6 in)
1978
139.5 mm (5.5 in)
1979
186.0 mm (7.3 in)
1980
255.0 mm (10.0 in)
1981
128.4 mm (5.1 in)
1982
254.0 mm (10.0 in)
1983
236.6 mm (9.3 in)
1984
202.4 mm (8.0 in)
1985
346.9 mm (13.7 in)
1986
187.2 mm (7.4 in)
1987
132.3 mm (5.2 in)
1988
77.3 mm (3.0 in)
1989
299.9 mm (11.8 in)
1995
179.3 mm (7.1 in)
1996
136.0 mm (5.4 in)
1997
120.2 mm (4.7 in)
1998
295.3 mm (11.6 in)
1999
119.1 mm (4.7 in)
2000
149.4 mm (5.9 in)
2001
304.8 mm (12.0 in)
2002
245.1 mm (9.6 in)
2003
156.2 mm (6.1 in)
Longest dry spell (CDD)
The longest dry spell of the year at De Quincy, 1940 to 2003. The record is 51 days in 1953, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at De Quincy by year
Year
Longest dry spell (CDD)
1940
34 days
1941
19 days
1942
27 days
1943
19 days
1944
28 days
1945
19 days
1946
26 days
1947
24 days
1948
24 days
1949
20 days
1950
22 days
1951
25 days
1952
48 days
1953
51 days
1954
26 days
1955
28 days
1956
25 days
1957
17 days
1958
26 days
1959
19 days
1960
18 days
1961
26 days
1962
32 days
1963
26 days
1964
37 days
1965
29 days
1966
19 days
1967
27 days
1968
17 days
1969
29 days
1970
22 days
1971
22 days
1972
18 days
1973
18 days
1974
18 days
1975
28 days
1976
20 days
1977
21 days
1978
23 days
1979
31 days
1980
29 days
1981
18 days
1982
18 days
1983
24 days
1984
17 days
1985
18 days
1986
22 days
1987
26 days
1988
23 days
1989
15 days
1995
18 days
1996
25 days
1997
19 days
1998
34 days
1999
23 days
2000
14 days
2001
36 days
2002
21 days
2003
19 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
34 years with a frost
Across 34 years with a frost, the median last spring frost at De Quincy falls on 8 March and the median first autumn frost on 16 November, which leaves a median of 257 days between them.
Fitted over all years, the growing season changes by +3.5 days per decade at this station.
Frost dates and growing season at De Quincy
Measure
Median, all years
Earliest period
Recent period (1960 to 2002)
Recent against earliest
Fitted trend
Last spring frost
8 March
n/a
9 March
n/a
-0.2 days per decade
First autumn frost
16 November
n/a
19 November
n/a
+3.2 days per decade
Growing days
257 days
n/a
257 days
n/a
+3.5 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
55 years, 1941 to 2002
A day with at least 114.6 mm (4.5 in) of rain is expected about once in 2 years. A day with at least 243.7 mm (9.6 in) of rain is expected about once in 100 years.
Rainfall return levels at De Quincy: the daily rain expected about once in a given number of years
Expected about once in
A day with at least
Note
2 years
114.6 mm (4.5 in)
5 years
153.5 mm (6.0 in)
10 years
177.4 mm (7.0 in)
25 years
205.7 mm (8.1 in)
50 years
225.3 mm (8.9 in)
100 years
243.7 mm (9.6 in)
Longer than the 55 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, 55 years of values from 1941 to 2002.
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: 241.3 mm (9.5 in) in 1964; 209.3 mm (8.2 in) in 2001; 194.3 mm (7.6 in) in 1943.
Download the Data
Data for De Quincy standing records by year: CSV or JSON. Field meanings are on the data page.
Data for De Quincy 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 2026-10-16 (16 October 2026). Records are computed by this site and are not official.