Sloan Weather Records (USC00418382)

Record envelope, standing records and threshold days for Sloan (USC00418382), Texas, United States, with 41 years of record.

Key Facts for Sloan

Sloan (USC00418382) is a weather station in Texas, United States at 31.15 latitude and -98.92 longitude, 397 m (1,302 ft) above sea level.
The station reports from 1935 to 1975, 41 years of record.
204 records set at Sloan still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Sloan set a daily record precipitation of 47.0 mm (1.9 in) on 2 August 1975.

About the Station

Location: Texas, United States, 31.15 latitude, -98.92 longitude.
Elevation: 397 m (1,302 ft).
Period of record: 1935 to 1975, 41 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 Sloan. 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 Sloan, 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	31.1 C (88.0 F)	-3.3 C (26.1 F)	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	37.8 C (100.0 F)	10.0 C (50.0 F)	n/a	n/a
Oct	n/a	n/a	n/a	n/a
Nov	n/a	n/a	n/a	n/a
Dec	n/a	-2.2 C (28.0 F)	n/a	n/a

Which Years Hold Standing Records

204 standing records

204 records at Sloan still stand. 1940 holds the most, with 116.

All-Time Record Progression

2 new records

2 all-time records were set at Sloan between 22 February 1966 and 22 February 1966. Each dot is a new record.

Wettest Day of Each Month

Jul: 215.1 mm (8.5 in)

The wettest day on record for each calendar month at Sloan. The most was 215.1 mm (8.5 in) on 23 July 1938.

Record daily precipitation for each month at Sloan
Month	Record daily precipitation (mm)	Date
Jan	93.5 mm (3.7 in)	23 January 1938
Feb	62.0 mm (2.4 in)	25 February 1948
Mar	58.4 mm (2.3 in)	18 March 1947
Apr	80.0 mm (3.1 in)	30 April 1944
May	110.0 mm (4.3 in)	26 May 1950
Jun	105.7 mm (4.2 in)	16 June 1961
Jul	215.1 mm (8.5 in)	23 July 1938
Aug	80.0 mm (3.1 in)	11 August 1942
Sep	92.7 mm (3.6 in)	20 September 1964
Oct	139.7 mm (5.5 in)	5 October 1969
Nov	80.0 mm (3.1 in)	24 November 1952
Dec	48.3 mm (1.9 in)	26 December 1940

Period of Record Coverage

1940 to 1947

2 years of record at Sloan, 1940 to 1947. 2 years have data for under 90 percent of days and are left out of rankings: 1940, 1947.

Latest Records

Latest records at Sloan
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 August 1975	Sloan, US	daily rain	47.0 mm (1.9 in)	22.4 mm (0.9 in)	4 years	18 of 100 (Routine)
12 July 1975	Sloan, US	daily rain	22.1 mm (0.9 in)	4.3 mm (0.17 in)	36 years	15 of 100 (Routine)
2 July 1975	Sloan, US	daily rain	38.1 mm (1.5 in)	25.1 mm (1.0 in)	6 years	15 of 100 (Routine)
24 May 1975	Sloan, US	daily rain	49.5 mm (1.9 in)	14.2 mm (0.6 in)	18 years	17 of 100 (Routine)
20 May 1975	Sloan, US	daily rain	29.0 mm (1.1 in)	14.0 mm (0.6 in)	8 years	14 of 100 (Routine)
14 May 1975	Sloan, US	daily rain	25.4 mm (1.0 in)	10.2 mm (0.4 in)	9 years	12 of 100 (Routine)
7 April 1975	Sloan, US	daily rain	50.8 mm (2.0 in)	46.0 mm (1.8 in)	36 years	47 of 100 (Notable)
23 February 1975	Sloan, US	daily snowfall	5.1 cm (2.0 in)	2.6 cm (1.0 in)	8 years	11 of 100 (Routine)
2 February 1975	Sloan, US	daily rain	18.3 mm (0.7 in)	10.7 mm (0.4 in)	36 years	20 of 100 (Routine)
1 February 1975	Sloan, US	daily rain	34.0 mm (1.3 in)	4.5 mm (0.18 in)	33 years	18 of 100 (Routine)
12 January 1975	Sloan, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	39 years	40 of 100 (Notable)
12 January 1975	Sloan, US	daily snow depth	12.7 cm (5.0 in)	12.7 cm (5.0 in)	39 years	27 of 100 (Routine)
7 November 1974	Sloan, US	daily rain	16.8 mm (0.7 in)	1.1 mm (0.04 in)	7 years	6 of 100 (Routine)
31 October 1974	Sloan, US	daily rain	20.8 mm (0.8 in)	4.3 mm (0.17 in)	33 years	16 of 100 (Routine)
28 October 1974	Sloan, US	daily rain	31.8 mm (1.3 in)	1.3 mm (0.05 in)	13 years	8 of 100 (Routine)
17 September 1974	Sloan, US	daily rain	54.9 mm (2.2 in)	12.5 mm (0.5 in)	37 years	21 of 100 (Routine)
13 September 1974	Sloan, US	daily rain	13.0 mm (0.5 in)	5.1 mm (0.20 in)	11 years	9 of 100 (Routine)
7 August 1974	Sloan, US	daily rain	19.1 mm (0.8 in)	4.4 mm (0.17 in)	8 years	8 of 100 (Routine)
6 August 1974	Sloan, US	daily rain	23.9 mm (0.9 in)	20.1 mm (0.8 in)	24 years	20 of 100 (Routine)
5 August 1974	Sloan, US	daily rain	35.8 mm (1.4 in)	14.2 mm (0.6 in)	4 years	13 of 100 (Routine)

Extremes by Year

1935 to 1975

Yearly extremes at Sloan: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Hottest day (TXx)	37.8 C (100.0 F)	1947	34.5 C (94.0 F)	2
Coldest night (TNn)	-3.3 C (26.1 F)	1940	-2.2 C (28.0 F)	3
Wettest day (Rx1day)	215.1 mm (8.5 in)	1938	72.4 mm (2.9 in)	41
Wettest five days (Rx5day)	486.9 mm (19.2 in)	1938	98.3 mm (3.9 in)	41
Longest dry spell (CDD)	80 days	1966	37 days	41

Hottest day (TXx)

The hottest day of the year at Sloan, 1935 to 1975. The record is 37.8 C (100.0 F) in 1947, marked on the chart; the median year is 34.5 C (94.0 F).

Hottest day (TXx) at Sloan by year
Year	Hottest day (TXx)
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	31.1 C (88.0 F)
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	37.8 C (100.0 F)
1948	n/a
1949	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	n/a
1974	n/a
1975	n/a

Coldest night (TNn)

The coldest night of the year at Sloan, 1935 to 1975. The record is -3.3 C (26.1 F) in 1940, marked on the chart; the median year is -2.2 C (28.0 F).

Coldest night (TNn) at Sloan by year
Year	Coldest night (TNn)
1935	n/a
1936	n/a
1937	n/a
1938	n/a
1939	n/a
1940	-3.3 C (26.1 F)
1941	n/a
1942	n/a
1943	n/a
1944	n/a
1945	n/a
1946	n/a
1947	10.0 C (50.0 F)
1948	n/a
1949	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	-2.2 C (28.0 F)
1966	n/a
1967	n/a
1968	n/a
1969	n/a
1970	n/a
1971	n/a
1972	n/a
1973	n/a
1974	n/a
1975	n/a

Wettest day (Rx1day)

The wettest day of the year at Sloan, 1935 to 1975. The record is 215.1 mm (8.5 in) in 1938, marked on the chart; the median year is 72.4 mm (2.9 in).

Wettest day (Rx1day) at Sloan by year
Year	Wettest day (Rx1day)
1935	74.9 mm (2.9 in)
1936	86.1 mm (3.4 in)
1937	74.4 mm (2.9 in)
1938	215.1 mm (8.5 in)
1939	56.1 mm (2.2 in)
1940	78.7 mm (3.1 in)
1941	71.9 mm (2.8 in)
1942	80.0 mm (3.1 in)
1943	49.5 mm (1.9 in)
1944	80.0 mm (3.1 in)
1945	51.3 mm (2.0 in)
1946	48.3 mm (1.9 in)
1947	58.4 mm (2.3 in)
1948	62.0 mm (2.4 in)
1949	48.3 mm (1.9 in)
1950	110.0 mm (4.3 in)
1951	38.1 mm (1.5 in)
1952	86.9 mm (3.4 in)
1953	68.6 mm (2.7 in)
1954	44.5 mm (1.8 in)
1955	72.4 mm (2.9 in)
1956	36.1 mm (1.4 in)
1957	84.8 mm (3.3 in)
1958	62.2 mm (2.4 in)
1959	96.5 mm (3.8 in)
1960	60.5 mm (2.4 in)
1961	105.7 mm (4.2 in)
1962	28.4 mm (1.1 in)
1963	41.4 mm (1.6 in)
1964	92.7 mm (3.6 in)
1965	78.7 mm (3.1 in)
1966	73.2 mm (2.9 in)
1967	49.5 mm (1.9 in)
1968	73.7 mm (2.9 in)
1969	139.7 mm (5.5 in)
1970	41.7 mm (1.6 in)
1971	112.3 mm (4.4 in)
1972	51.6 mm (2.0 in)
1973	85.6 mm (3.4 in)
1974	73.7 mm (2.9 in)
1975	50.8 mm (2.0 in)

Wettest five days (Rx5day)

The wettest five days of the year at Sloan, 1935 to 1975. The record is 486.9 mm (19.2 in) in 1938, marked on the chart; the median year is 98.3 mm (3.9 in).

Wettest five days (Rx5day) at Sloan by year
Year	Wettest five days (Rx5day)
1935	176.3 mm (6.9 in)
1936	180.4 mm (7.1 in)
1937	153.1 mm (6.0 in)
1938	486.9 mm (19.2 in)
1939	88.7 mm (3.5 in)
1940	92.5 mm (3.6 in)
1941	116.0 mm (4.6 in)
1942	120.6 mm (4.7 in)
1943	88.4 mm (3.5 in)
1944	133.1 mm (5.2 in)
1945	62.0 mm (2.4 in)
1946	58.5 mm (2.3 in)
1947	71.7 mm (2.8 in)
1948	70.1 mm (2.8 in)
1949	84.7 mm (3.3 in)
1950	114.3 mm (4.5 in)
1951	43.2 mm (1.7 in)
1952	200.8 mm (7.9 in)
1953	75.2 mm (3.0 in)
1954	47.0 mm (1.9 in)
1955	121.2 mm (4.8 in)
1956	53.4 mm (2.1 in)
1957	154.5 mm (6.1 in)
1958	84.3 mm (3.3 in)
1959	148.4 mm (5.8 in)
1960	98.3 mm (3.9 in)
1961	189.5 mm (7.5 in)
1962	55.0 mm (2.2 in)
1963	68.8 mm (2.7 in)
1964	292.1 mm (11.5 in)
1965	142.2 mm (5.6 in)
1966	92.5 mm (3.6 in)
1967	69.6 mm (2.7 in)
1968	122.2 mm (4.8 in)
1969	177.8 mm (7.0 in)
1970	61.9 mm (2.4 in)
1971	288.1 mm (11.3 in)
1972	76.5 mm (3.0 in)
1973	134.0 mm (5.3 in)
1974	112.1 mm (4.4 in)
1975	84.6 mm (3.3 in)

Longest dry spell (CDD)

The longest dry spell of the year at Sloan, 1935 to 1975. The record is 80 days in 1966, marked on the chart; the median year is 37 days.

Longest dry spell (CDD) at Sloan by year
Year	Longest dry spell (CDD)
1935	21 days
1936	32 days
1937	37 days
1938	45 days
1939	27 days
1940	32 days
1941	24 days
1942	38 days
1943	76 days
1944	42 days
1945	31 days
1946	38 days
1947	26 days
1948	27 days
1949	39 days
1950	58 days
1951	40 days
1952	45 days
1953	45 days
1954	40 days
1955	32 days
1956	54 days
1957	41 days
1958	28 days
1959	31 days
1960	21 days
1961	48 days
1962	31 days
1963	29 days
1964	41 days
1965	49 days
1966	80 days
1967	30 days
1968	36 days
1969	44 days
1970	72 days
1971	55 days
1972	37 days
1973	36 days
1974	32 days
1975	24 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

38 years, 1936 to 1974

A day with at least 67.0 mm (2.6 in) of rain is expected about once in 2 years. A day with at least 187.2 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Sloan: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	67.0 mm (2.6 in)
5 years	94.2 mm (3.7 in)
10 years	114.1 mm (4.5 in)
25 years	141.5 mm (5.6 in)
50 years	163.6 mm (6.4 in)	Longer than the 38 years of record
100 years	187.2 mm (7.4 in)	Longer than the 38 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, 38 years of values from 1936 to 1974.

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: 215.1 mm (8.5 in) in 1938; 139.7 mm (5.5 in) in 1969; 112.3 mm (4.4 in) in 1971.

Download the Data

Data for Sloan standing records by year: CSV or JSON. Field meanings are on the data page.
Data for Sloan 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).

Date	Kind	Detail
1966-02-22	Record daily snowfall	Record daily snowfall 25.4 cm (10.0 in)
1966-02-22	Record snow depth	Record snow depth 25.4 cm (10.0 in)