Cotton Valley 5 NNW Weather Records (USC00162121)

Record envelope, standing records and threshold days for Cotton Valley 5 NNW (USC00162121), Louisiana, United States, with 67 years of record.

Key Facts for Cotton Valley 5 NNW

Cotton Valley 5 NNW (USC00162121) is a weather station in Louisiana, United States at 32.89 latitude and -93.46 longitude, 79 m (258 ft) above sea level.
The station reports from 1943 to 2009, 67 years of record.
1,464 records set at Cotton Valley 5 NNW still stand.
Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
Cotton Valley 5 NNW set a daily record precipitation of 71.9 mm (2.8 in) on 13 October 2009.

About the Station

Location: Louisiana, United States, 32.89 latitude, -93.46 longitude.
Elevation: 79 m (258 ft).
Period of record: 1943 to 2009, 67 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 Cotton Valley 5 NNW. 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 Cotton Valley 5 NNW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	28.3 C (82.9 F)	-20.6 C (-5.1 F)	n/a	n/a
Feb	30.6 C (87.1 F)	-21.1 C (-6.0 F)	n/a	n/a
Mar	31.7 C (89.1 F)	-8.3 C (17.1 F)	n/a	n/a
Apr	32.8 C (91.0 F)	-2.2 C (28.0 F)	n/a	n/a
May	35.6 C (96.1 F)	3.3 C (37.9 F)	n/a	n/a
Jun	39.4 C (102.9 F)	8.9 C (48.0 F)	n/a	n/a
Jul	41.1 C (106.0 F)	12.8 C (55.0 F)	n/a	n/a
Aug	41.1 C (106.0 F)	10.6 C (51.1 F)	n/a	n/a
Sep	40.0 C (104.0 F)	1.7 C (35.1 F)	n/a	n/a
Oct	36.1 C (97.0 F)	-3.9 C (25.0 F)	n/a	n/a
Nov	30.6 C (87.1 F)	-10.0 C (14.0 F)	n/a	n/a
Dec	28.3 C (82.9 F)	-15.0 C (5.0 F)	n/a	n/a

Which Years Hold Standing Records

1,464 standing records

1,464 records at Cotton Valley 5 NNW still stand. 1954 holds the most, with 77.

Standing records at Cotton Valley 5 NNW by the year they were set
Year set	Standing records
1948	34
1949	38
1950	51
1951	48
1952	59
1953	53
1954	77
1955	50
1956	36
1957	32
1958	35
1959	22
1960	36
1961	36
1962	38
1963	68
1964	39
1965	38
1966	46
1967	62
1968	32
1969	40
1970	44
1971	44
1972	33
1973	19
1974	48
1975	27
1976	39
1977	37
1978	39
1979	28
1980	49
1981	28
1982	49
1983	10

All-Time Record Progression

4 new records

4 all-time records were set at Cotton Valley 5 NNW between 6 June 1979 and 5 April 1997. Each dot is a new record.

When Cotton Valley 5 NNW set new all-time records
Date	Kind	Detail
1979-06-06	Record daily precipitation	Record daily precipitation 137.7 mm (5.4 in)
1990-02-03	Record daily precipitation	Record daily precipitation 139.7 mm (5.5 in)
1996-06-13	Record daily precipitation	Record daily precipitation 180.1 mm (7.1 in)
1997-04-05	Record daily precipitation	Record daily precipitation 264.2 mm (10.4 in)

Wettest Day of Each Month

Apr: 264.2 mm (10.4 in)

The wettest day on record for each calendar month at Cotton Valley 5 NNW. The most was 264.2 mm (10.4 in) on 5 April 1997.

Record daily precipitation for each month at Cotton Valley 5 NNW
Month	Record daily precipitation (mm)	Date
Jan	112.8 mm (4.4 in)	20 January 1979
Feb	139.7 mm (5.5 in)	3 February 1990
Mar	104.1 mm (4.1 in)	20 March 2006
Apr	264.2 mm (10.4 in)	5 April 1997
May	107.7 mm (4.2 in)	24 May 1955
Jun	180.1 mm (7.1 in)	13 June 1996
Jul	128.0 mm (5.0 in)	7 July 2007
Aug	96.0 mm (3.8 in)	12 August 2008
Sep	134.6 mm (5.3 in)	25 September 2005
Oct	132.3 mm (5.2 in)	5 October 1949
Nov	133.9 mm (5.3 in)	18 November 1969
Dec	91.4 mm (3.6 in)	4 December 1973

Period of Record Coverage

1948 to 1983

36 years of record at Cotton Valley 5 NNW, 1948 to 1983. 2 years have data for under 90 percent of days and are left out of rankings: 1948, 1983.

Days with data per year at Cotton Valley 5 NNW
Year	Days with data	Share of year	Complete
1948	237	65%	No
1949	365	100%	Yes
1950	361	99%	Yes
1951	356	98%	Yes
1952	354	97%	Yes
1953	364	100%	Yes
1954	361	99%	Yes
1955	357	98%	Yes
1956	365	100%	Yes
1957	365	100%	Yes
1958	365	100%	Yes
1959	365	100%	Yes
1960	366	100%	Yes
1961	363	99%	Yes
1962	365	100%	Yes
1963	365	100%	Yes
1964	365	100%	Yes
1965	365	100%	Yes
1966	354	97%	Yes
1967	360	99%	Yes
1968	361	99%	Yes
1969	365	100%	Yes
1970	365	100%	Yes
1971	365	100%	Yes
1972	366	100%	Yes
1973	364	100%	Yes
1974	365	100%	Yes
1975	364	100%	Yes
1976	366	100%	Yes
1977	364	100%	Yes
1978	358	98%	Yes
1979	365	100%	Yes
1980	364	99%	Yes
1981	365	100%	Yes
1982	365	100%	Yes
1983	120	33%	No

Latest Records

Latest records at Cotton Valley 5 NNW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
13 October 2009	Cotton Valley 5 NNW, US	daily rain	71.9 mm (2.8 in)	18.6 mm (0.7 in)	8 years	16 of 100 (Routine)
2 October 2009	Cotton Valley 5 NNW, US	daily rain	83.1 mm (3.3 in)	35.6 mm (1.4 in)	52 years	37 of 100 (Notable)
15 September 2009	Cotton Valley 5 NNW, US	daily rain	54.1 mm (2.1 in)	9.4 mm (0.37 in)	11 years	13 of 100 (Routine)
14 September 2009	Cotton Valley 5 NNW, US	daily rain	54.6 mm (2.1 in)	15.7 mm (0.6 in)	20 years	20 of 100 (Routine)
30 August 2009	Cotton Valley 5 NNW, US	daily rain	43.4 mm (1.7 in)	5.3 mm (0.21 in)	20 years	15 of 100 (Routine)
22 July 2009	Cotton Valley 5 NNW, US	daily rain	47.0 mm (1.9 in)	27.4 mm (1.1 in)	56 years	37 of 100 (Notable)
30 June 2009	Cotton Valley 5 NNW, US	daily rain	36.3 mm (1.4 in)	6.3 mm (0.25 in)	8 years	11 of 100 (Routine)
3 May 2009	Cotton Valley 5 NNW, US	daily rain	75.2 mm (3.0 in)	26.2 mm (1.0 in)	15 years	24 of 100 (Routine)
12 November 2008	Cotton Valley 5 NNW, US	daily rain	37.8 mm (1.5 in)	17.2 mm (0.7 in)	59 years	33 of 100 (Routine)
3 September 2008	Cotton Valley 5 NNW, US	daily rain	76.5 mm (3.0 in)	33.6 mm (1.3 in)	16 years	27 of 100 (Routine)
24 August 2008	Cotton Valley 5 NNW, US	daily rain	46.5 mm (1.8 in)	33.5 mm (1.3 in)	43 years	42 of 100 (Notable)
23 August 2008	Cotton Valley 5 NNW, US	daily rain	44.7 mm (1.8 in)	9.4 mm (0.37 in)	42 years	24 of 100 (Routine)
12 August 2008	Cotton Valley 5 NNW, US	monthly rain	96.0 mm (3.8 in)	13.2 mm (0.5 in)	18 years	30 of 100 (Routine)
14 July 2008	Cotton Valley 5 NNW, US	daily rain	65.8 mm (2.6 in)	10.2 mm (0.4 in)	3 years	11 of 100 (Routine)
29 June 2008	Cotton Valley 5 NNW, US	daily rain	41.4 mm (1.6 in)	0.8 mm (0.03 in)	22 years	12 of 100 (Routine)
14 May 2008	Cotton Valley 5 NNW, US	daily rain	66.8 mm (2.6 in)	20.6 mm (0.8 in)	55 years	33 of 100 (Routine)
18 October 2007	Cotton Valley 5 NNW, US	daily rain	75.9 mm (3.0 in)	47.2 mm (1.9 in)	40 years	40 of 100 (Notable)
7 July 2007	Cotton Valley 5 NNW, US	monthly rain	128.0 mm (5.0 in)	4.3 mm (0.17 in)	43 years	31 of 100 (Routine)
3 July 2007	Cotton Valley 5 NNW, US	daily rain	39.9 mm (1.6 in)	18.6 mm (0.7 in)	38 years	28 of 100 (Routine)
16 June 2007	Cotton Valley 5 NNW, US	daily rain	98.3 mm (3.9 in)	10.4 mm (0.4 in)	24 years	18 of 100 (Routine)

Climate Trend

33 complete years, 1949 to 1982

One stripe for each of 33 complete years at Cotton Valley 5 NNW, 1949 to 1982. Blue stripes are years cooler than the station's own mean of 17.8 C (64.0 F); red stripes are warmer. The coolest year was 1968, at 16.2 C (61.2 F), and the warmest was 1954, at 19.4 C (66.8 F). The strongest colour marks a difference of 1.6 C (2.9 F).

Annual mean temperature at Cotton Valley 5 NNW as warming stripes, 1949 to 1982
Year	Annual mean temperature	Difference from the station mean
1949	18.9 C	+1.11 C
1950	18.7 C	+0.90 C
1951	18.7 C	+0.93 C
1952	18.5 C	+0.68 C
1953	18.7 C	+0.88 C
1954	19.4 C	+1.58 C
1955	18.5 C	+0.74 C
1956	18.8 C	+1.00 C
1957	18.6 C	+0.84 C
1958	17.6 C	-0.21 C
1959	18.2 C	+0.39 C
1960	17.5 C	-0.23 C
1961	17.4 C	-0.38 C
1962	18.2 C	+0.41 C
1963	18.0 C	+0.24 C
1964	18.3 C	+0.52 C
1965	18.5 C	+0.71 C
1967	16.9 C	-0.90 C
1968	16.2 C	-1.56 C
1969	17.3 C	-0.47 C
1970	17.1 C	-0.64 C
1971	17.5 C	-0.31 C
1972	17.3 C	-0.47 C
1973	17.4 C	-0.41 C
1974	17.4 C	-0.41 C
1975	17.3 C	-0.45 C
1976	16.4 C	-1.39 C
1977	17.6 C	-0.19 C
1978	16.9 C	-0.87 C
1979	16.4 C	-1.34 C
1980	17.5 C	-0.25 C
1981	17.4 C	-0.42 C
1982	17.8 C	+0.01 C

The annual mean temperature here has fallen by 0.6 C (0.4 to 0.8) per decade over 1949 to 1982. In Fahrenheit: 1.0 F (0.7 to 1.4) per decade. The slope is a straight line fitted to 33 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Cotton Valley 5 NNW
Measure	Per decade (C)	Per decade (F)	Period	Complete years	Reading
Annual mean temperature	-0.6 C (-0.8 to -0.4) per decade	-1.0 F (-1.4 to -0.7) per decade	1949 to 1982	33	Fall
Mean daily maximum	-0.6 C (-0.9 to -0.4) per decade	-1.1 F (-1.6 to -0.7) per decade	1949 to 1982	33	Fall
Mean daily minimum	-0.5 C (-0.7 to -0.3) per decade	-1.0 F (-1.3 to -0.6) per decade	1949 to 1982	33	Fall

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

1943 to 2009

Yearly extremes at Cotton Valley 5 NNW: 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)	1954	38.3 C (100.9 F)	36
Coldest night (TNn)	-21.1 C (-6.0 F)	1951	-10.0 C (14.0 F)	36
Wettest day (Rx1day)	264.2 mm (10.4 in)	1997	85.9 mm (3.4 in)	67
Wettest five days (Rx5day)	264.7 mm (10.4 in)	1997	134.8 mm (5.3 in)	66
Longest dry spell (CDD)	41 days	2000	25 days	66

Hottest day (TXx)

The hottest day of the year at Cotton Valley 5 NNW, 1943 to 2009. The record is 41.1 C (106.0 F) in 1954, marked on the chart; the median year is 38.3 C (100.9 F).

Hottest day (TXx) at Cotton Valley 5 NNW by year
Year	Hottest day (TXx)
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	40.0 C (104.0 F)
1949	38.3 C (100.9 F)
1950	36.1 C (97.0 F)
1951	40.6 C (105.1 F)
1952	40.0 C (104.0 F)
1953	39.4 C (102.9 F)
1954	41.1 C (106.0 F)
1955	36.7 C (98.1 F)
1956	40.0 C (104.0 F)
1957	37.2 C (99.0 F)
1958	36.1 C (97.0 F)
1959	36.7 C (98.1 F)
1960	39.4 C (102.9 F)
1961	36.1 C (97.0 F)
1962	40.6 C (105.1 F)
1963	40.0 C (104.0 F)
1964	40.0 C (104.0 F)
1965	37.8 C (100.0 F)
1966	38.9 C (102.0 F)
1967	35.6 C (96.1 F)
1968	35.0 C (95.0 F)
1969	40.0 C (104.0 F)
1970	38.3 C (100.9 F)
1971	38.3 C (100.9 F)
1972	36.7 C (98.1 F)
1973	35.0 C (95.0 F)
1974	37.2 C (99.0 F)
1975	36.1 C (97.0 F)
1976	35.6 C (96.1 F)
1977	38.9 C (102.0 F)
1978	38.9 C (102.0 F)
1979	35.6 C (96.1 F)
1980	41.1 C (106.0 F)
1981	38.3 C (100.9 F)
1982	39.4 C (102.9 F)
1983	27.8 C (82.0 F)
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Coldest night (TNn)

The coldest night of the year at Cotton Valley 5 NNW, 1943 to 2009. The record is -21.1 C (-6.0 F) in 1951, marked on the chart; the median year is -10.0 C (14.0 F).

Coldest night (TNn) at Cotton Valley 5 NNW by year
Year	Coldest night (TNn)
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	n/a
1948	-3.9 C (25.0 F)
1949	-12.8 C (9.0 F)
1950	-9.4 C (15.1 F)
1951	-21.1 C (-6.0 F)
1952	-6.7 C (19.9 F)
1953	-10.0 C (14.0 F)
1954	-6.7 C (19.9 F)
1955	-10.6 C (12.9 F)
1956	-7.8 C (18.0 F)
1957	-8.9 C (16.0 F)
1958	-10.6 C (12.9 F)
1959	-11.1 C (12.0 F)
1960	-8.3 C (17.1 F)
1961	-12.2 C (10.0 F)
1962	-20.6 C (-5.1 F)
1963	-15.0 C (5.0 F)
1964	-12.2 C (10.0 F)
1965	-9.4 C (15.1 F)
1966	-12.2 C (10.0 F)
1967	-8.3 C (17.1 F)
1968	-8.3 C (17.1 F)
1969	-10.0 C (14.0 F)
1970	-11.7 C (10.9 F)
1971	-8.3 C (17.1 F)
1972	-9.4 C (15.1 F)
1973	-7.8 C (18.0 F)
1974	-5.6 C (21.9 F)
1975	-8.3 C (17.1 F)
1976	-10.0 C (14.0 F)
1977	-12.2 C (10.0 F)
1978	-10.0 C (14.0 F)
1979	-11.7 C (10.9 F)
1980	-8.3 C (17.1 F)
1981	-11.1 C (12.0 F)
1982	-15.0 C (5.0 F)
1983	-6.7 C (19.9 F)
1984	n/a
1985	n/a
1986	n/a
1987	n/a
1988	n/a
1989	n/a
1990	n/a
1991	n/a
1992	n/a
1993	n/a
1994	n/a
1995	n/a
1996	n/a
1997	n/a
1998	n/a
1999	n/a
2000	n/a
2001	n/a
2002	n/a
2003	n/a
2004	n/a
2005	n/a
2006	n/a
2007	n/a
2008	n/a
2009	n/a

Wettest day (Rx1day)

The wettest day of the year at Cotton Valley 5 NNW, 1943 to 2009. The record is 264.2 mm (10.4 in) in 1997, marked on the chart; the median year is 85.9 mm (3.4 in).

Wettest day (Rx1day) at Cotton Valley 5 NNW by year
Year	Wettest day (Rx1day)
1943	49.0 mm (1.9 in)
1944	59.4 mm (2.3 in)
1945	73.7 mm (2.9 in)
1946	54.1 mm (2.1 in)
1947	69.6 mm (2.7 in)
1948	74.7 mm (2.9 in)
1949	132.3 mm (5.2 in)
1950	106.9 mm (4.2 in)
1951	71.6 mm (2.8 in)
1952	99.1 mm (3.9 in)
1953	96.8 mm (3.8 in)
1954	65.3 mm (2.6 in)
1955	107.7 mm (4.2 in)
1956	68.8 mm (2.7 in)
1957	83.6 mm (3.3 in)
1958	133.4 mm (5.3 in)
1959	62.0 mm (2.4 in)
1960	63.8 mm (2.5 in)
1961	104.4 mm (4.1 in)
1962	80.3 mm (3.2 in)
1963	123.7 mm (4.9 in)
1964	97.8 mm (3.9 in)
1965	103.4 mm (4.1 in)
1966	90.2 mm (3.6 in)
1967	71.9 mm (2.8 in)
1968	120.1 mm (4.7 in)
1969	133.9 mm (5.3 in)
1970	70.1 mm (2.8 in)
1971	48.3 mm (1.9 in)
1972	96.0 mm (3.8 in)
1973	91.4 mm (3.6 in)
1974	69.9 mm (2.8 in)
1975	127.5 mm (5.0 in)
1976	92.5 mm (3.6 in)
1977	39.9 mm (1.6 in)
1978	74.4 mm (2.9 in)
1979	137.7 mm (5.4 in)
1980	48.8 mm (1.9 in)
1981	80.3 mm (3.2 in)
1982	87.9 mm (3.5 in)
1983	82.8 mm (3.3 in)
1984	102.1 mm (4.0 in)
1985	57.9 mm (2.3 in)
1986	77.5 mm (3.1 in)
1987	101.9 mm (4.0 in)
1988	71.1 mm (2.8 in)
1989	84.6 mm (3.3 in)
1990	139.7 mm (5.5 in)
1991	95.3 mm (3.8 in)
1992	61.7 mm (2.4 in)
1993	58.2 mm (2.3 in)
1994	56.9 mm (2.2 in)
1995	91.4 mm (3.6 in)
1996	180.1 mm (7.1 in)
1997	264.2 mm (10.4 in)
1998	82.0 mm (3.2 in)
1999	99.1 mm (3.9 in)
2000	101.9 mm (4.0 in)
2001	85.9 mm (3.4 in)
2002	63.0 mm (2.5 in)
2003	71.1 mm (2.8 in)
2004	104.9 mm (4.1 in)
2005	134.6 mm (5.3 in)
2006	104.1 mm (4.1 in)
2007	128.0 mm (5.0 in)
2008	96.0 mm (3.8 in)
2009	83.1 mm (3.3 in)

Wettest five days (Rx5day)

The wettest five days of the year at Cotton Valley 5 NNW, 1943 to 2009. The record is 264.7 mm (10.4 in) in 1997, marked on the chart; the median year is 134.8 mm (5.3 in).

Wettest five days (Rx5day) at Cotton Valley 5 NNW by year
Year	Wettest five days (Rx5day)
1943	n/a
1944	97.6 mm (3.8 in)
1945	88.9 mm (3.5 in)
1946	92.3 mm (3.6 in)
1947	84.1 mm (3.3 in)
1948	126.8 mm (5.0 in)
1949	165.2 mm (6.5 in)
1950	171.7 mm (6.8 in)
1951	115.3 mm (4.5 in)
1952	99.6 mm (3.9 in)
1953	156.1 mm (6.1 in)
1954	86.0 mm (3.4 in)
1955	171.0 mm (6.7 in)
1956	100.3 mm (3.9 in)
1957	134.4 mm (5.3 in)
1958	255.5 mm (10.1 in)
1959	103.2 mm (4.1 in)
1960	164.9 mm (6.5 in)
1961	160.3 mm (6.3 in)
1962	104.9 mm (4.1 in)
1963	143.0 mm (5.6 in)
1964	139.5 mm (5.5 in)
1965	143.0 mm (5.6 in)
1966	100.1 mm (3.9 in)
1967	115.3 mm (4.5 in)
1968	149.4 mm (5.9 in)
1969	174.8 mm (6.9 in)
1970	103.8 mm (4.1 in)
1971	151.7 mm (6.0 in)
1972	145.8 mm (5.7 in)
1973	132.9 mm (5.2 in)
1974	162.6 mm (6.4 in)
1975	178.6 mm (7.0 in)
1976	163.8 mm (6.4 in)
1977	65.5 mm (2.6 in)
1978	106.9 mm (4.2 in)
1979	162.9 mm (6.4 in)
1980	104.7 mm (4.1 in)
1981	124.2 mm (4.9 in)
1982	134.2 mm (5.3 in)
1983	98.6 mm (3.9 in)
1984	132.5 mm (5.2 in)
1985	97.7 mm (3.8 in)
1986	157.2 mm (6.2 in)
1987	148.9 mm (5.9 in)
1988	76.7 mm (3.0 in)
1989	142.9 mm (5.6 in)
1990	190.0 mm (7.5 in)
1991	160.8 mm (6.3 in)
1992	111.2 mm (4.4 in)
1993	111.2 mm (4.4 in)
1994	85.8 mm (3.4 in)
1995	120.7 mm (4.8 in)
1996	222.3 mm (8.8 in)
1997	264.7 mm (10.4 in)
1998	217.2 mm (8.6 in)
1999	149.1 mm (5.9 in)
2000	128.9 mm (5.1 in)
2001	176.6 mm (7.0 in)
2002	103.0 mm (4.1 in)
2003	103.2 mm (4.1 in)
2004	211.2 mm (8.3 in)
2005	135.1 mm (5.3 in)
2006	182.6 mm (7.2 in)
2007	178.1 mm (7.0 in)
2008	112.0 mm (4.4 in)
2009	186.2 mm (7.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Cotton Valley 5 NNW, 1943 to 2009. The record is 41 days in 2000, marked on the chart; the median year is 25 days.

Longest dry spell (CDD) at Cotton Valley 5 NNW by year
Year	Longest dry spell (CDD)
1943	n/a
1944	12 days
1945	26 days
1946	13 days
1947	26 days
1948	22 days
1949	26 days
1950	13 days
1951	24 days
1952	33 days
1953	38 days
1954	26 days
1955	27 days
1956	30 days
1957	21 days
1958	22 days
1959	18 days
1960	24 days
1961	16 days
1962	27 days
1963	33 days
1964	34 days
1965	28 days
1966	22 days
1967	17 days
1968	16 days
1969	24 days
1970	27 days
1971	24 days
1972	23 days
1973	17 days
1974	17 days
1975	36 days
1976	15 days
1977	18 days
1978	22 days
1979	30 days
1980	33 days
1981	32 days
1982	17 days
1983	28 days
1984	13 days
1985	25 days
1986	29 days
1987	19 days
1988	25 days
1989	23 days
1990	26 days
1991	28 days
1992	20 days
1993	32 days
1994	20 days
1995	27 days
1996	25 days
1997	16 days
1998	25 days
1999	31 days
2000	41 days
2001	40 days
2002	27 days
2003	24 days
2004	15 days
2005	18 days
2006	22 days
2007	29 days
2008	25 days
2009	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

33 years with a frost

Across 33 years with a frost, the median last spring frost at Cotton Valley 5 NNW falls on 20 March and the median first autumn frost on 5 November, which leaves a median of 229 days between them.

Fitted over all years, the growing season changes by +4.3 days per decade at this station.

Frost dates and growing season at Cotton Valley 5 NNW
Measure	Median, all years	Earliest period	Recent period (1952 to 1982)	Recent against earliest	Fitted trend
Last spring frost	20 March	n/a	23 March	n/a	-1.6 days per decade
First autumn frost	5 November	n/a	6 November	n/a	+2.7 days per decade
Growing days	229 days	n/a	230 days	n/a	+4.3 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

60 years, 1947 to 2008

A day with at least 88.0 mm (3.5 in) of rain is expected about once in 2 years. A day with at least 206.3 mm (8.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Cotton Valley 5 NNW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	88.0 mm (3.5 in)
5 years	117.0 mm (4.6 in)
10 years	137.2 mm (5.4 in)
25 years	164.0 mm (6.5 in)
50 years	184.8 mm (7.3 in)
100 years	206.3 mm (8.1 in)	Longer than the 60 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, 60 years of values from 1947 to 2008.

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: 264.2 mm (10.4 in) in 1997; 180.1 mm (7.1 in) in 1996; 139.7 mm (5.5 in) in 1990.

Download the Data

Data for Cotton Valley 5 NNW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Cotton Valley 5 NNW 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).