Knapp 2 SW Weather Records (USC00414841)

Record envelope, standing records and threshold days for Knapp 2 SW (USC00414841), Texas, United States, with 83 years of record.

Key Facts for Knapp 2 SW

Knapp 2 SW (USC00414841) is a weather station in Texas, United States at 32.63 latitude and -101.15 longitude, 698 m (2,290 ft) above sea level.
The station reports from 1931 to 2013, 83 years of record.
4 records set at Knapp 2 SW still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Knapp 2 SW set a daily record precipitation of 28.2 mm (1.1 in) on 17 July 2013.

About the Station

Location: Texas, United States, 32.63 latitude, -101.15 longitude.
Elevation: 698 m (2,290 ft).
Period of record: 1931 to 2013, 83 years.
Eligible elements: 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 Knapp 2 SW. 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 Knapp 2 SW, with 2026 drawn through them
Month	Highest record high	Lowest record low	2026 highest maximum	2026 lowest minimum
Jan	n/a	n/a	n/a	n/a
Feb	n/a	n/a	n/a	n/a
Mar	n/a	n/a	n/a	n/a
Apr	n/a	n/a	n/a	n/a
May	n/a	n/a	n/a	n/a
Jun	n/a	n/a	n/a	n/a
Jul	n/a	n/a	n/a	n/a
Aug	n/a	n/a	n/a	n/a
Sep	n/a	n/a	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	21.1 C (70.0 F)	-3.9 C (25.0 F)	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

4 standing records

4 records at Knapp 2 SW still stand. 1973 holds the most, with 4.

All-Time Record Progression

3 new records

3 all-time records were set at Knapp 2 SW between 15 March 1969 and 5 March 1989. Each dot is a new record.

When Knapp 2 SW set new all-time records
Date	Kind	Detail
1969-03-15	Record snow depth	Record snow depth 5.1 cm (2.0 in)
1980-05-15	Record daily precipitation	Record daily precipitation 150.6 mm (5.9 in)
1989-03-05	Record snow depth	Record snow depth 25.4 cm (10.0 in)

Wettest Day of Each Month

May: 150.6 mm (5.9 in)

The wettest day on record for each calendar month at Knapp 2 SW. The most was 150.6 mm (5.9 in) on 15 May 1980.

Record daily precipitation for each month at Knapp 2 SW
Month	Record daily precipitation (mm)	Date
Jan	43.9 mm (1.7 in)	9 January 1939
Feb	50.0 mm (2.0 in)	20 February 1997
Mar	106.2 mm (4.2 in)	23 March 2000
Apr	65.8 mm (2.6 in)	14 April 1941
May	150.6 mm (5.9 in)	15 May 1980
Jun	125.0 mm (4.9 in)	12 June 1999
Jul	82.6 mm (3.3 in)	22 July 1990
Aug	141.0 mm (5.6 in)	18 August 2007
Sep	110.5 mm (4.4 in)	1 September 1965
Oct	86.4 mm (3.4 in)	20 October 1983
Nov	88.9 mm (3.5 in)	16 November 2001
Dec	47.5 mm (1.9 in)	8 December 1980

Period of Record Coverage

1973 to 1973

1 years of record at Knapp 2 SW, 1973 to 1973. 1 years have data for under 90 percent of days and are left out of rankings: 1973.

Latest Records

Latest records at Knapp 2 SW
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 July 2013	Knapp 2 SW, US	daily rain	28.2 mm (1.1 in)	15.8 mm (0.6 in)	54 years	34 of 100 (Routine)
13 February 2012	Knapp 2 SW, US	daily snowfall	5.8 cm (2.3 in)	5.8 cm (2.3 in)	80 years	43 of 100 (Notable)
13 February 2012	Knapp 2 SW, US	daily rain	7.9 mm (0.31 in)	3.3 mm (0.13 in)	48 years	20 of 100 (Routine)
10 January 2012	Knapp 2 SW, US	daily rain	39.4 mm (1.6 in)	25.9 mm (1.0 in)	72 years	60 of 100 (Major)
10 January 2012	Knapp 2 SW, US	monthly snowfall	10.2 cm (4.0 in)	1.3 cm (0.5 in)	45 years	33 of 100 (Routine)
9 January 2012	Knapp 2 SW, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	80 years	42 of 100 (Notable)
26 December 2011	Knapp 2 SW, US	daily snow depth	5.1 cm (2.0 in)	5.1 cm (2.0 in)	80 years	20 of 100 (Routine)
25 December 2011	Knapp 2 SW, US	monthly snow depth (Tie)	10.2 cm (4.0 in)	tie	0 years	4 of 100 (Routine)
5 December 2011	Knapp 2 SW, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	80 years	52 of 100 (Notable)
5 December 2011	Knapp 2 SW, US	monthly snow depth	10.2 cm (4.0 in)	10.2 cm (4.0 in)	80 years	52 of 100 (Notable)
5 December 2011	Knapp 2 SW, US	daily rain	10.4 mm (0.4 in)	5.8 mm (0.23 in)	76 years	20 of 100 (Routine)
17 September 2011	Knapp 2 SW, US	daily rain	41.1 mm (1.6 in)	7.8 mm (0.31 in)	48 years	26 of 100 (Routine)
8 July 2010	Knapp 2 SW, US	daily rain	35.8 mm (1.4 in)	8.4 mm (0.33 in)	8 years	15 of 100 (Routine)
3 July 2010	Knapp 2 SW, US	daily rain	38.1 mm (1.5 in)	16.8 mm (0.7 in)	35 years	29 of 100 (Routine)
16 June 2010	Knapp 2 SW, US	daily rain	27.4 mm (1.1 in)	3.8 mm (0.15 in)	48 years	23 of 100 (Routine)
14 May 2010	Knapp 2 SW, US	daily rain	15.2 mm (0.6 in)	4.3 mm (0.17 in)	76 years	20 of 100 (Routine)
16 April 2010	Knapp 2 SW, US	daily rain	65.0 mm (2.6 in)	46.2 mm (1.8 in)	32 years	52 of 100 (Notable)
15 April 2010	Knapp 2 SW, US	daily rain	35.8 mm (1.4 in)	14.5 mm (0.6 in)	33 years	29 of 100 (Routine)
16 March 2010	Knapp 2 SW, US	daily rain	21.1 mm (0.8 in)	5.6 mm (0.22 in)	12 years	15 of 100 (Routine)
2 March 2010	Knapp 2 SW, US	daily rain	15.2 mm (0.6 in)	6.3 mm (0.25 in)	21 years	19 of 100 (Routine)

Extremes by Year

1931 to 2013

Yearly extremes at Knapp 2 SW: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	21.1 C (70.0 F)	1973	21.1 C (70.0 F)	1
Coldest night (TNn)	-3.9 C (25.0 F)	1973	-3.9 C (25.0 F)	1
Wettest day (Rx1day)	150.6 mm (5.9 in)	1980	57.3 mm (2.3 in)	82
Wettest five days (Rx5day)	176.6 mm (7.0 in)	2004	85.9 mm (3.4 in)	82
Longest dry spell (CDD)	139 days	2011	45 days	82

Hottest day (TXx)

The hottest day of the year at Knapp 2 SW, 1931 to 2013. The record is 21.1 C (70.0 F) in 1973, marked on the chart; the median year is 21.1 C (70.0 F).

Hottest day (TXx) at Knapp 2 SW by year
Year	Hottest day (TXx)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
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
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	21.1 C (70.0 F)
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
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
2010	n/a
2011	n/a
2012	n/a
2013	n/a

Coldest night (TNn)

The coldest night of the year at Knapp 2 SW, 1931 to 2013. The record is -3.9 C (25.0 F) in 1973, marked on the chart; the median year is -3.9 C (25.0 F).

Coldest night (TNn) at Knapp 2 SW by year
Year	Coldest night (TNn)
1931	n/a
1932	n/a
1933	n/a
1934	n/a
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
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
1950	n/a
1951	n/a
1952	n/a
1953	n/a
1954	n/a
1955	n/a
1956	n/a
1957	n/a
1958	n/a
1959	n/a
1960	n/a
1961	n/a
1962	n/a
1963	n/a
1964	n/a
1965	n/a
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	-3.9 C (25.0 F)
1974	n/a
1975	n/a
1976	n/a
1977	n/a
1978	n/a
1979	n/a
1980	n/a
1981	n/a
1982	n/a
1983	n/a
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
2010	n/a
2011	n/a
2012	n/a
2013	n/a

Wettest day (Rx1day)

The wettest day of the year at Knapp 2 SW, 1931 to 2013. The record is 150.6 mm (5.9 in) in 1980, marked on the chart; the median year is 57.3 mm (2.3 in).

Wettest day (Rx1day) at Knapp 2 SW by year
Year	Wettest day (Rx1day)
1931	41.4 mm (1.6 in)
1932	57.2 mm (2.3 in)
1933	73.9 mm (2.9 in)
1934	34.3 mm (1.4 in)
1935	65.0 mm (2.6 in)
1936	39.1 mm (1.5 in)
1937	42.9 mm (1.7 in)
1938	63.5 mm (2.5 in)
1939	87.1 mm (3.4 in)
1940	48.8 mm (1.9 in)
1941	65.8 mm (2.6 in)
1942	81.3 mm (3.2 in)
1943	41.1 mm (1.6 in)
1944	69.3 mm (2.7 in)
1945	34.5 mm (1.4 in)
1946	36.6 mm (1.4 in)
1947	118.9 mm (4.7 in)
1948	56.6 mm (2.2 in)
1950	30.7 mm (1.2 in)
1951	83.8 mm (3.3 in)
1952	46.5 mm (1.8 in)
1953	48.8 mm (1.9 in)
1954	55.6 mm (2.2 in)
1955	58.4 mm (2.3 in)
1956	52.1 mm (2.1 in)
1957	44.2 mm (1.7 in)
1958	61.2 mm (2.4 in)
1959	42.4 mm (1.7 in)
1960	66.3 mm (2.6 in)
1961	55.9 mm (2.2 in)
1962	100.3 mm (3.9 in)
1963	40.6 mm (1.6 in)
1964	58.7 mm (2.3 in)
1965	110.5 mm (4.4 in)
1966	48.3 mm (1.9 in)
1967	89.2 mm (3.5 in)
1968	41.4 mm (1.6 in)
1969	56.4 mm (2.2 in)
1970	50.3 mm (2.0 in)
1971	68.6 mm (2.7 in)
1972	88.1 mm (3.5 in)
1973	5.1 mm (0.20 in)
1974	51.6 mm (2.0 in)
1975	88.4 mm (3.5 in)
1976	44.2 mm (1.7 in)
1977	72.1 mm (2.8 in)
1978	95.3 mm (3.8 in)
1979	43.9 mm (1.7 in)
1980	150.6 mm (5.9 in)
1981	57.4 mm (2.3 in)
1982	101.6 mm (4.0 in)
1983	86.4 mm (3.4 in)
1984	67.3 mm (2.6 in)
1985	63.5 mm (2.5 in)
1986	67.8 mm (2.7 in)
1987	44.2 mm (1.7 in)
1988	69.9 mm (2.8 in)
1989	47.8 mm (1.9 in)
1990	82.6 mm (3.3 in)
1991	46.0 mm (1.8 in)
1992	53.8 mm (2.1 in)
1993	80.0 mm (3.1 in)
1994	58.9 mm (2.3 in)
1995	47.0 mm (1.9 in)
1996	47.0 mm (1.9 in)
1997	81.5 mm (3.2 in)
1998	30.7 mm (1.2 in)
1999	125.0 mm (4.9 in)
2000	106.2 mm (4.2 in)
2001	88.9 mm (3.5 in)
2002	117.1 mm (4.6 in)
2003	48.3 mm (1.9 in)
2004	86.1 mm (3.4 in)
2005	54.9 mm (2.2 in)
2006	37.8 mm (1.5 in)
2007	141.0 mm (5.6 in)
2008	61.0 mm (2.4 in)
2009	55.6 mm (2.2 in)
2010	65.0 mm (2.6 in)
2011	41.1 mm (1.6 in)
2012	50.5 mm (2.0 in)
2013	28.4 mm (1.1 in)

Wettest five days (Rx5day)

The wettest five days of the year at Knapp 2 SW, 1931 to 2013. The record is 176.6 mm (7.0 in) in 2004, marked on the chart; the median year is 85.9 mm (3.4 in).

Wettest five days (Rx5day) at Knapp 2 SW by year
Year	Wettest five days (Rx5day)
1931	67.8 mm (2.7 in)
1932	72.4 mm (2.9 in)
1933	79.2 mm (3.1 in)
1934	34.3 mm (1.4 in)
1935	80.8 mm (3.2 in)
1936	90.9 mm (3.6 in)
1937	102.1 mm (4.0 in)
1938	102.0 mm (4.0 in)
1939	96.3 mm (3.8 in)
1940	48.8 mm (1.9 in)
1941	102.9 mm (4.1 in)
1942	87.4 mm (3.4 in)
1943	55.9 mm (2.2 in)
1944	100.8 mm (4.0 in)
1945	79.4 mm (3.1 in)
1946	56.2 mm (2.2 in)
1947	161.3 mm (6.4 in)
1948	114.3 mm (4.5 in)
1950	64.5 mm (2.5 in)
1951	118.1 mm (4.6 in)
1952	46.5 mm (1.8 in)
1953	48.8 mm (1.9 in)
1954	65.4 mm (2.6 in)
1955	66.8 mm (2.6 in)
1956	52.1 mm (2.1 in)
1957	83.8 mm (3.3 in)
1958	65.3 mm (2.6 in)
1959	84.8 mm (3.3 in)
1960	111.0 mm (4.4 in)
1961	79.5 mm (3.1 in)
1962	157.5 mm (6.2 in)
1963	51.8 mm (2.0 in)
1964	71.1 mm (2.8 in)
1965	110.5 mm (4.4 in)
1966	121.9 mm (4.8 in)
1967	105.1 mm (4.1 in)
1968	57.4 mm (2.3 in)
1969	82.0 mm (3.2 in)
1970	50.3 mm (2.0 in)
1971	70.8 mm (2.8 in)
1972	124.2 mm (4.9 in)
1973	7.6 mm (0.30 in)
1974	81.6 mm (3.2 in)
1975	134.6 mm (5.3 in)
1976	88.4 mm (3.5 in)
1977	72.1 mm (2.8 in)
1978	112.3 mm (4.4 in)
1979	61.9 mm (2.4 in)
1980	150.6 mm (5.9 in)
1981	62.2 mm (2.4 in)
1982	101.6 mm (4.0 in)
1983	95.3 mm (3.8 in)
1984	72.4 mm (2.9 in)
1985	79.2 mm (3.1 in)
1986	156.7 mm (6.2 in)
1987	97.0 mm (3.8 in)
1988	95.3 mm (3.8 in)
1989	51.3 mm (2.0 in)
1990	131.6 mm (5.2 in)
1991	106.4 mm (4.2 in)
1992	154.4 mm (6.1 in)
1993	87.0 mm (3.4 in)
1994	89.1 mm (3.5 in)
1995	87.1 mm (3.4 in)
1996	65.5 mm (2.6 in)
1997	161.0 mm (6.3 in)
1998	39.9 mm (1.6 in)
1999	151.7 mm (6.0 in)
2000	106.2 mm (4.2 in)
2001	142.7 mm (5.6 in)
2002	117.1 mm (4.6 in)
2003	115.1 mm (4.5 in)
2004	176.6 mm (7.0 in)
2005	133.8 mm (5.3 in)
2006	73.6 mm (2.9 in)
2007	141.0 mm (5.6 in)
2008	63.0 mm (2.5 in)
2009	59.9 mm (2.4 in)
2010	111.0 mm (4.4 in)
2011	55.8 mm (2.2 in)
2012	65.2 mm (2.6 in)
2013	50.5 mm (2.0 in)

Longest dry spell (CDD)

The longest dry spell of the year at Knapp 2 SW, 1931 to 2013. The record is 139 days in 2011, marked on the chart; the median year is 45 days.

Longest dry spell (CDD) at Knapp 2 SW by year
Year	Longest dry spell (CDD)
1931	52 days
1932	52 days
1933	39 days
1934	51 days
1935	31 days
1936	38 days
1937	40 days
1938	57 days
1939	45 days
1940	47 days
1941	23 days
1942	50 days
1943	56 days
1944	36 days
1945	53 days
1946	63 days
1947	32 days
1948	78 days
1950	90 days
1951	43 days
1952	42 days
1953	39 days
1954	37 days
1955	41 days
1956	54 days
1957	32 days
1958	47 days
1959	35 days
1960	32 days
1961	49 days
1962	67 days
1963	45 days
1964	49 days
1965	56 days
1966	46 days
1967	38 days
1968	34 days
1969	44 days
1970	77 days
1971	53 days
1972	58 days
1973	80 days
1974	29 days
1975	34 days
1976	67 days
1977	28 days
1978	39 days
1979	45 days
1980	39 days
1981	29 days
1982	28 days
1983	42 days
1984	79 days
1985	50 days
1986	35 days
1987	78 days
1988	75 days
1989	38 days
1990	40 days
1991	39 days
1992	59 days
1993	36 days
1994	60 days
1995	60 days
1996	85 days
1997	34 days
1998	42 days
1999	84 days
2000	85 days
2001	34 days
2002	41 days
2003	51 days
2004	34 days
2005	50 days
2006	42 days
2007	51 days
2008	99 days
2009	31 days
2010	72 days
2011	139 days
2012	37 days
2013	32 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.

Rainfall Return Levels

68 years, 1932 to 2012

A day with at least 60.0 mm (2.4 in) of rain is expected about once in 2 years. A day with at least 151.3 mm (6.0 in) of rain is expected about once in 100 years.

Rainfall return levels at Knapp 2 SW: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	60.0 mm (2.4 in)
5 years	81.2 mm (3.2 in)
10 years	96.4 mm (3.8 in)
25 years	117.2 mm (4.6 in)
50 years	133.8 mm (5.3 in)
100 years	151.3 mm (6.0 in)	Longer than the 68 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, 68 years of values from 1932 to 2012.

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: 150.6 mm (5.9 in) in 1980; 125.0 mm (4.9 in) in 1999; 117.1 mm (4.6 in) in 2002.

Download the Data

Data for Knapp 2 SW standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Knapp 2 SW 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.

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