Simmesport Weather Records (USC00168507)

Record envelope, standing records and threshold days for Simmesport (USC00168507), Louisiana, United States, with 84 years of record.

Key Facts for Simmesport

Simmesport (USC00168507) is a weather station in Louisiana, United States at 30.98 latitude and -91.82 longitude, 15 m (49 ft) above sea level.
The station reports from 1904 to 1987, 84 years of record.
0 records set at Simmesport still stand.
Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
Simmesport set a daily record precipitation of 60.5 mm (2.4 in) on 25 May 1987.

About the Station

Location: Louisiana, United States, 30.98 latitude, -91.82 longitude.
Elevation: 15 m (49 ft).
Period of record: 1904 to 1987, 84 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 Simmesport. 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 Simmesport, 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	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

Which Years Hold Standing Records

0 standing records

0 records at Simmesport still stand.

Wettest Day of Each Month

May: 357.4 mm (14.1 in)

The wettest day on record for each calendar month at Simmesport. The most was 357.4 mm (14.1 in) on 20 May 1935.

Record daily precipitation for each month at Simmesport
Month	Record daily precipitation (mm)	Date
Jan	155.4 mm (6.1 in)	6 January 1950
Feb	121.9 mm (4.8 in)	15 February 1929
Mar	160.3 mm (6.3 in)	17 March 1961
Apr	201.9 mm (7.9 in)	6 April 1983
May	357.4 mm (14.1 in)	20 May 1935
Jun	190.5 mm (7.5 in)	7 June 1984
Jul	108.2 mm (4.3 in)	29 July 1951
Aug	152.4 mm (6.0 in)	9 August 1940
Sep	110.5 mm (4.4 in)	6 September 1973
Oct	125.7 mm (4.9 in)	4 October 1964
Nov	144.8 mm (5.7 in)	12 November 1935
Dec	211.3 mm (8.3 in)	6 December 1971

Latest Records

Latest records at Simmesport
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 May 1987	Simmesport, US	daily rain	60.5 mm (2.4 in)	37.9 mm (1.5 in)	40 years	33 of 100 (Routine)
18 March 1987	Simmesport, US	daily rain	64.0 mm (2.5 in)	13.2 mm (0.5 in)	64 years	33 of 100 (Routine)
18 January 1987	Simmesport, US	daily rain	107.2 mm (4.2 in)	25.9 mm (1.0 in)	73 years	44 of 100 (Notable)
10 December 1986	Simmesport, US	daily rain	64.8 mm (2.6 in)	11.5 mm (0.5 in)	19 years	18 of 100 (Routine)
24 November 1986	Simmesport, US	daily rain	95.3 mm (3.8 in)	36.4 mm (1.4 in)	45 years	37 of 100 (Notable)
9 October 1986	Simmesport, US	daily rain	45.7 mm (1.8 in)	19.3 mm (0.8 in)	76 years	40 of 100 (Notable)
29 June 1986	Simmesport, US	daily rain	30.5 mm (1.2 in)	11.2 mm (0.4 in)	67 years	33 of 100 (Routine)
20 April 1986	Simmesport, US	daily rain	41.9 mm (1.6 in)	7.6 mm (0.30 in)	44 years	24 of 100 (Routine)
19 March 1986	Simmesport, US	daily rain	100.3 mm (3.9 in)	17.7 mm (0.7 in)	41 years	28 of 100 (Routine)
29 October 1985	Simmesport, US	daily rain	54.6 mm (2.1 in)	30.2 mm (1.2 in)	11 years	26 of 100 (Routine)
28 October 1985	Simmesport, US	daily rain	76.2 mm (3.0 in)	2.5 mm (0.10 in)	15 years	13 of 100 (Routine)
21 October 1985	Simmesport, US	daily rain	41.9 mm (1.6 in)	14.5 mm (0.6 in)	23 years	21 of 100 (Routine)
14 October 1985	Simmesport, US	daily rain	50.0 mm (2.0 in)	10.1 mm (0.4 in)	42 years	25 of 100 (Routine)
30 September 1985	Simmesport, US	daily rain	43.2 mm (1.7 in)	12.5 mm (0.5 in)	72 years	36 of 100 (Notable)
3 September 1985	Simmesport, US	daily rain	83.8 mm (3.3 in)	50.3 mm (2.0 in)	14 years	43 of 100 (Notable)
16 August 1985	Simmesport, US	daily rain	49.0 mm (1.9 in)	17.0 mm (0.7 in)	36 years	28 of 100 (Routine)
11 February 1985	Simmesport, US	daily rain	43.7 mm (1.7 in)	5.6 mm (0.22 in)	51 years	26 of 100 (Routine)
27 November 1984	Simmesport, US	daily rain	50.8 mm (2.0 in)	5.1 mm (0.20 in)	6 years	11 of 100 (Routine)
23 October 1984	Simmesport, US	daily rain	81.3 mm (3.2 in)	19.6 mm (0.8 in)	27 years	26 of 100 (Routine)
22 October 1984	Simmesport, US	daily rain	53.3 mm (2.1 in)	15.2 mm (0.6 in)	1 year	16 of 100 (Routine)

Extremes by Year

1904 to 1987

Yearly extremes at Simmesport: the record and the median year
Measure	Record	Year of the record	Median year	Years with a value
Wettest day (Rx1day)	357.4 mm (14.1 in)	1935	100.8 mm (4.0 in)	81
Wettest five days (Rx5day)	361.2 mm (14.2 in)	1935	149.1 mm (5.9 in)	81
Longest dry spell (CDD)	40 days	1923	23 days	81

Wettest day (Rx1day)

The wettest day of the year at Simmesport, 1904 to 1987. The record is 357.4 mm (14.1 in) in 1935, marked on the chart; the median year is 100.8 mm (4.0 in).

Wettest day (Rx1day) at Simmesport by year
Year	Wettest day (Rx1day)
1904	31.5 mm (1.2 in)
1905	73.7 mm (2.9 in)
1906	71.1 mm (2.8 in)
1907	68.6 mm (2.7 in)
1908	73.7 mm (2.9 in)
1909	119.4 mm (4.7 in)
1910	130.0 mm (5.1 in)
1911	74.9 mm (2.9 in)
1912	93.0 mm (3.7 in)
1913	100.8 mm (4.0 in)
1914	87.6 mm (3.4 in)
1915	132.1 mm (5.2 in)
1916	137.7 mm (5.4 in)
1917	81.3 mm (3.2 in)
1918	87.1 mm (3.4 in)
1919	114.3 mm (4.5 in)
1920	96.5 mm (3.8 in)
1921	116.8 mm (4.6 in)
1922	73.7 mm (2.9 in)
1923	102.9 mm (4.1 in)
1924	53.3 mm (2.1 in)
1928	48.3 mm (1.9 in)
1929	121.9 mm (4.8 in)
1930	68.6 mm (2.7 in)
1931	91.4 mm (3.6 in)
1932	71.9 mm (2.8 in)
1933	76.2 mm (3.0 in)
1934	127.0 mm (5.0 in)
1935	357.4 mm (14.1 in)
1936	64.3 mm (2.5 in)
1937	127.0 mm (5.0 in)
1938	128.3 mm (5.1 in)
1939	101.6 mm (4.0 in)
1940	152.4 mm (6.0 in)
1941	141.5 mm (5.6 in)
1942	106.9 mm (4.2 in)
1943	85.6 mm (3.4 in)
1944	119.6 mm (4.7 in)
1945	82.6 mm (3.3 in)
1946	118.1 mm (4.6 in)
1947	87.4 mm (3.4 in)
1948	113.0 mm (4.4 in)
1949	78.7 mm (3.1 in)
1950	155.4 mm (6.1 in)
1951	108.2 mm (4.3 in)
1952	101.6 mm (4.0 in)
1953	201.9 mm (7.9 in)
1954	104.9 mm (4.1 in)
1955	154.2 mm (6.1 in)
1956	116.1 mm (4.6 in)
1957	185.2 mm (7.3 in)
1958	66.5 mm (2.6 in)
1959	94.7 mm (3.7 in)
1960	81.3 mm (3.2 in)
1961	160.3 mm (6.3 in)
1962	78.0 mm (3.1 in)
1963	108.0 mm (4.3 in)
1964	125.7 mm (4.9 in)
1965	104.1 mm (4.1 in)
1966	88.9 mm (3.5 in)
1967	146.8 mm (5.8 in)
1968	69.1 mm (2.7 in)
1969	70.1 mm (2.8 in)
1970	80.5 mm (3.2 in)
1971	211.3 mm (8.3 in)
1972	77.5 mm (3.1 in)
1973	192.3 mm (7.6 in)
1974	77.5 mm (3.1 in)
1975	96.5 mm (3.8 in)
1976	77.5 mm (3.1 in)
1977	170.2 mm (6.7 in)
1978	87.6 mm (3.4 in)
1979	76.7 mm (3.0 in)
1980	91.4 mm (3.6 in)
1981	106.7 mm (4.2 in)
1982	156.2 mm (6.1 in)
1983	201.9 mm (7.9 in)
1984	190.5 mm (7.5 in)
1985	83.8 mm (3.3 in)
1986	100.3 mm (3.9 in)
1987	107.2 mm (4.2 in)

Wettest five days (Rx5day)

The wettest five days of the year at Simmesport, 1904 to 1987. The record is 361.2 mm (14.2 in) in 1935, marked on the chart; the median year is 149.1 mm (5.9 in).

Wettest five days (Rx5day) at Simmesport by year
Year	Wettest five days (Rx5day)
1904	40.1 mm (1.6 in)
1905	158.9 mm (6.3 in)
1906	105.2 mm (4.1 in)
1907	149.9 mm (5.9 in)
1908	147.9 mm (5.8 in)
1909	174.8 mm (6.9 in)
1910	130.8 mm (5.1 in)
1911	223.0 mm (8.8 in)
1912	146.5 mm (5.8 in)
1913	170.2 mm (6.7 in)
1914	103.6 mm (4.1 in)
1915	150.7 mm (5.9 in)
1916	181.9 mm (7.2 in)
1917	116.9 mm (4.6 in)
1918	124.0 mm (4.9 in)
1919	114.3 mm (4.5 in)
1920	139.3 mm (5.5 in)
1921	152.4 mm (6.0 in)
1922	106.6 mm (4.2 in)
1923	153.7 mm (6.1 in)
1924	55.9 mm (2.2 in)
1928	119.9 mm (4.7 in)
1929	172.5 mm (6.8 in)
1930	68.8 mm (2.7 in)
1931	190.4 mm (7.5 in)
1932	126.3 mm (5.0 in)
1933	97.1 mm (3.8 in)
1934	213.4 mm (8.4 in)
1935	361.2 mm (14.2 in)
1936	141.3 mm (5.6 in)
1937	140.0 mm (5.5 in)
1938	212.6 mm (8.4 in)
1939	156.1 mm (6.1 in)
1940	219.7 mm (8.6 in)
1941	166.9 mm (6.6 in)
1942	106.9 mm (4.2 in)
1943	104.2 mm (4.1 in)
1944	125.3 mm (4.9 in)
1945	134.4 mm (5.3 in)
1946	185.0 mm (7.3 in)
1947	147.6 mm (5.8 in)
1948	187.7 mm (7.4 in)
1949	121.5 mm (4.8 in)
1950	210.3 mm (8.3 in)
1951	127.8 mm (5.0 in)
1952	122.2 mm (4.8 in)
1953	350.0 mm (13.8 in)
1954	117.6 mm (4.6 in)
1955	302.3 mm (11.9 in)
1956	183.1 mm (7.2 in)
1957	217.5 mm (8.6 in)
1958	125.2 mm (4.9 in)
1959	138.1 mm (5.4 in)
1960	104.5 mm (4.1 in)
1961	220.0 mm (8.7 in)
1962	132.8 mm (5.2 in)
1963	119.2 mm (4.7 in)
1964	138.4 mm (5.4 in)
1965	135.3 mm (5.3 in)
1966	162.4 mm (6.4 in)
1967	269.8 mm (10.6 in)
1968	154.2 mm (6.1 in)
1969	112.9 mm (4.4 in)
1970	166.1 mm (6.5 in)
1971	293.8 mm (11.6 in)
1972	105.4 mm (4.1 in)
1973	213.6 mm (8.4 in)
1974	170.4 mm (6.7 in)
1975	169.4 mm (6.7 in)
1976	142.7 mm (5.6 in)
1977	235.9 mm (9.3 in)
1978	101.6 mm (4.0 in)
1979	148.3 mm (5.8 in)
1980	170.9 mm (6.7 in)
1981	142.3 mm (5.6 in)
1982	204.3 mm (8.0 in)
1983	236.7 mm (9.3 in)
1984	197.6 mm (7.8 in)
1985	191.2 mm (7.5 in)
1986	175.1 mm (6.9 in)
1987	149.1 mm (5.9 in)

Longest dry spell (CDD)

The longest dry spell of the year at Simmesport, 1904 to 1987. The record is 40 days in 1923, marked on the chart; the median year is 23 days.

Longest dry spell (CDD) at Simmesport by year
Year	Longest dry spell (CDD)
1904	18 days
1905	20 days
1906	24 days
1907	20 days
1908	18 days
1909	24 days
1910	24 days
1911	39 days
1912	24 days
1913	30 days
1914	18 days
1915	20 days
1916	21 days
1917	33 days
1918	27 days
1919	15 days
1920	31 days
1921	33 days
1922	17 days
1923	40 days
1924	14 days
1928	16 days
1929	39 days
1930	23 days
1931	18 days
1932	25 days
1933	19 days
1934	16 days
1935	29 days
1936	27 days
1937	24 days
1938	14 days
1939	16 days
1940	23 days
1941	14 days
1942	27 days
1943	19 days
1944	26 days
1945	12 days
1946	17 days
1947	27 days
1948	20 days
1949	20 days
1950	20 days
1951	29 days
1952	29 days
1953	22 days
1954	23 days
1955	27 days
1956	25 days
1957	16 days
1958	15 days
1959	18 days
1960	18 days
1961	26 days
1962	27 days
1963	27 days
1964	22 days
1965	28 days
1966	21 days
1967	27 days
1968	24 days
1969	17 days
1970	21 days
1971	23 days
1972	24 days
1973	16 days
1974	26 days
1975	28 days
1976	24 days
1977	35 days
1978	38 days
1979	26 days
1980	19 days
1981	27 days
1982	24 days
1983	30 days
1984	13 days
1985	14 days
1986	26 days
1987	20 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

71 years, 1906 to 1986

A day with at least 101.4 mm (4.0 in) of rain is expected about once in 2 years. A day with at least 303.2 mm (11.9 in) of rain is expected about once in 100 years.

Rainfall return levels at Simmesport: the daily rain expected about once in a given number of years
Expected about once in	A day with at least	Note
2 years	101.4 mm (4.0 in)
5 years	138.2 mm (5.4 in)
10 years	168.3 mm (6.6 in)
25 years	214.3 mm (8.4 in)
50 years	255.4 mm (10.1 in)
100 years	303.2 mm (11.9 in)	Longer than the 71 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, 71 years of values from 1906 to 1986.

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: 357.4 mm (14.1 in) in 1935; 211.3 mm (8.3 in) in 1971; 201.9 mm (7.9 in) in 1953.

Download the Data

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

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	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a

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	n/a	n/a	n/a	n/a
Dec	n/a	n/a	n/a	n/a