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Built 2026-10-14 (14 October 2026)

Port Allen Weather Records (USC00167448)

Record envelope, standing records and threshold days for Port Allen (USC00167448), Louisiana, United States, with 52 years of record.

Key Facts for Port Allen

  • Port Allen (USC00167448) is a weather station in Louisiana, United States at 30.45 latitude and -91.22 longitude, 5 m (15 ft) above sea level.
  • The station reports from 1975 to 2026, 52 years of record.
  • 0 records set at Port Allen still stand.
  • Records are tracked for prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Port Allen set a daily record precipitation of 22.9 mm (0.9 in) on 5 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: Louisiana, United States, 30.45 latitude, -91.22 longitude.
  • Elevation: 5 m (15 ft).
  • Period of record: 1975 to 2026, 52 years.
  • Eligible elements: prcp, snow, snwd.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Port Allen, with 2026 drawn through them The band shows the record high and record low for each calendar day at Port Allen. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Port Allen. 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 Port Allen, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at Port Allen by the year they were set 0 records at Port Allen still stand. 00000000000
0 records at Port Allen still stand.
Standing records at Port Allen by the year they were set
Year setStanding records

All-Time Record Progression

2 new records
When Port Allen set new all-time records 2 all-time records were set at Port Allen between 11 December 2008 and 13 August 2016. Each dot is a new record. Record snow depthRecord daily precipitation11 December 2008: Record snow depth 7.6 cm (3.0 in)13 August 2016: Record daily precipitation 210.8 mm (8.3 in)20102015
2 all-time records were set at Port Allen between 11 December 2008 and 13 August 2016. Each dot is a new record.
When Port Allen set new all-time records
DateKindDetail
2008-12-11Record snow depthRecord snow depth 7.6 cm (3.0 in)
2016-08-13Record daily precipitationRecord daily precipitation 210.8 mm (8.3 in)

Wettest Day of Each Month

Aug: 210.8 mm (8.3 in)
Record daily precipitation for each month at Port Allen The wettest day on record for each calendar month at Port Allen. The most was 210.8 mm (8.3 in) on 13 August 2016. 0100200300 Jan: 128.8 mm (5.1 in), 21 January 1993 Jan Feb: 121.9 mm (4.8 in), 2 February 1988 Feb Mar: 135.9 mm (5.4 in), 11 March 2016 Mar Apr: 160.0 mm (6.3 in), 22 April 1979 Apr May: 160.0 mm (6.3 in), 15 May 2008 May Jun: 204.5 mm (8.1 in), 6 June 2001 Jun Jul: 114.6 mm (4.5 in), 1 July 1992 Jul Aug: 210.8 mm (8.3 in), 13 August 2016 Aug Sep: 141.0 mm (5.6 in), 6 September 1977 Sep Oct: 165.9 mm (6.5 in), 26 October 2015 Oct Nov: 150.9 mm (5.9 in), 8 November 1989 Nov Dec: 166.9 mm (6.6 in), 4 December 1982 Dec
The wettest day on record for each calendar month at Port Allen. The most was 210.8 mm (8.3 in) on 13 August 2016.
Record daily precipitation for each month at Port Allen
MonthRecord daily precipitation (mm)Date
Jan128.8 mm (5.1 in)21 January 1993
Feb121.9 mm (4.8 in)2 February 1988
Mar135.9 mm (5.4 in)11 March 2016
Apr160.0 mm (6.3 in)22 April 1979
May160.0 mm (6.3 in)15 May 2008
Jun204.5 mm (8.1 in)6 June 2001
Jul114.6 mm (4.5 in)1 July 1992
Aug210.8 mm (8.3 in)13 August 2016
Sep141.0 mm (5.6 in)6 September 1977
Oct165.9 mm (6.5 in)26 October 2015
Nov150.9 mm (5.9 in)8 November 1989
Dec166.9 mm (6.6 in)4 December 1982

Latest Records

20
Latest records at Port Allen
DateStationRecordValueBeat old record byOld record stoodSignificance
5 October 2026Port Allen, USdaily rain (Provisional)22.9 mm (0.9 in)2.1 mm (0.08 in)21 years11 of 100 (Routine)
6 July 2026Port Allen, USdaily rain53.3 mm (2.1 in)12.7 mm (0.5 in)11 years15 of 100 (Routine)
9 May 2026Port Allen, USdaily rain148.1 mm (5.8 in)67.6 mm (2.7 in)31 years39 of 100 (Notable)
2 May 2026Port Allen, USdaily rain63.5 mm (2.5 in)27.9 mm (1.1 in)9 years17 of 100 (Routine)
12 March 2026Port Allen, USdaily rain54.4 mm (2.1 in)23.9 mm (0.9 in)13 years22 of 100 (Routine)
8 March 2026Port Allen, USdaily rain68.6 mm (2.7 in)23.6 mm (0.9 in)31 years26 of 100 (Routine)
4 February 2026Port Allen, USdaily rain33.3 mm (1.3 in)1.5 mm (0.06 in)16 years9 of 100 (Routine)
10 January 2026Port Allen, USdaily rain33.5 mm (1.3 in)5.6 mm (0.22 in)12 years10 of 100 (Routine)
5 December 2025Port Allen, USdaily rain43.4 mm (1.7 in)5.0 mm (0.20 in)20 years13 of 100 (Routine)
6 October 2025Port Allen, USdaily rain28.7 mm (1.1 in)7.6 mm (0.30 in)48 years21 of 100 (Routine)
7 May 2025Port Allen, USdaily rain63.5 mm (2.5 in)16.0 mm (0.6 in)2 years11 of 100 (Routine)
24 April 2025Port Allen, USdaily rain41.4 mm (1.6 in)12.2 mm (0.5 in)4 years10 of 100 (Routine)
16 March 2025Port Allen, USdaily rain36.3 mm (1.4 in)6.1 mm (0.24 in)50 years23 of 100 (Routine)
10 December 2024Port Allen, USdaily rain49.0 mm (1.9 in)16.5 mm (0.6 in)32 years21 of 100 (Routine)
19 November 2024Port Allen, USdaily rain46.5 mm (1.8 in)1.8 mm (0.07 in)36 years15 of 100 (Routine)
10 November 2024Port Allen, USdaily rain22.9 mm (0.9 in)0.5 mm (0.02 in)45 years18 of 100 (Routine)
23 July 2024Port Allen, USdaily rain33.5 mm (1.3 in)4.3 mm (0.17 in)24 years14 of 100 (Routine)
20 July 2024Port Allen, USdaily rain35.3 mm (1.4 in)3.5 mm (0.14 in)12 years10 of 100 (Routine)
2 June 2024Port Allen, USdaily rain46.7 mm (1.8 in)12.4 mm (0.5 in)20 years16 of 100 (Routine)
17 May 2024Port Allen, USdaily rain88.9 mm (3.5 in)12.2 mm (0.5 in)44 years22 of 100 (Routine)

Extremes by Year

1975 to 2026
Yearly extremes at Port Allen: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)210.8 mm (8.3 in)2016108.1 mm (4.3 in)52
Wettest five days (Rx5day)475.2 mm (18.7 in)2001167.6 mm (6.6 in)52
Longest dry spell (CDD)56 days201624 days52

Wettest day (Rx1day)

Wettest day (Rx1day) at Port Allen by year The wettest day of the year at Port Allen, 1975 to 2026. The record is 210.8 mm (8.3 in) in 2016, marked on the chart; the median year is 108.1 mm (4.3 in). 5010015020025019801990200020102020Record: 210.8 mm (8.3 in) in 2016
The wettest day of the year at Port Allen, 1975 to 2026. The record is 210.8 mm (8.3 in) in 2016, marked on the chart; the median year is 108.1 mm (4.3 in).
Wettest day (Rx1day) at Port Allen by year
YearWettest day (Rx1day)
1975108.0 mm (4.3 in)
197685.6 mm (3.4 in)
1977141.0 mm (5.6 in)
1978108.2 mm (4.3 in)
1979160.0 mm (6.3 in)
1980140.5 mm (5.5 in)
198199.3 mm (3.9 in)
1982166.9 mm (6.6 in)
1983127.5 mm (5.0 in)
1984102.9 mm (4.1 in)
198577.2 mm (3.0 in)
198671.4 mm (2.8 in)
198794.7 mm (3.7 in)
1988121.9 mm (4.8 in)
1989190.5 mm (7.5 in)
199083.8 mm (3.3 in)
199167.3 mm (2.6 in)
1992114.6 mm (4.5 in)
1993128.8 mm (5.1 in)
199485.9 mm (3.4 in)
1995130.3 mm (5.1 in)
1996107.4 mm (4.2 in)
1997183.6 mm (7.2 in)
199886.4 mm (3.4 in)
199964.8 mm (2.6 in)
200097.8 mm (3.9 in)
2001204.5 mm (8.1 in)
2002127.0 mm (5.0 in)
200388.9 mm (3.5 in)
2004141.0 mm (5.6 in)
200568.3 mm (2.7 in)
2006116.6 mm (4.6 in)
2007108.7 mm (4.3 in)
2008160.0 mm (6.3 in)
2009138.4 mm (5.4 in)
201092.7 mm (3.6 in)
2011118.6 mm (4.7 in)
2012102.6 mm (4.0 in)
2013104.9 mm (4.1 in)
2014110.0 mm (4.3 in)
2015165.9 mm (6.5 in)
2016210.8 mm (8.3 in)
2017101.6 mm (4.0 in)
2018105.4 mm (4.1 in)
2019119.4 mm (4.7 in)
202077.5 mm (3.1 in)
2021116.1 mm (4.6 in)
202250.8 mm (2.0 in)
2023101.6 mm (4.0 in)
202488.9 mm (3.5 in)
202563.5 mm (2.5 in)
2026148.1 mm (5.8 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Port Allen by year The wettest five days of the year at Port Allen, 1975 to 2026. The record is 475.2 mm (18.7 in) in 2001, marked on the chart; the median year is 167.6 mm (6.6 in). 010020030040050019801990200020102020Record: 475.2 mm (18.7 in) in 2001
The wettest five days of the year at Port Allen, 1975 to 2026. The record is 475.2 mm (18.7 in) in 2001, marked on the chart; the median year is 167.6 mm (6.6 in).
Wettest five days (Rx5day) at Port Allen by year
YearWettest five days (Rx5day)
1975175.1 mm (6.9 in)
197685.6 mm (3.4 in)
1977208.3 mm (8.2 in)
1978119.9 mm (4.7 in)
1979263.7 mm (10.4 in)
1980196.1 mm (7.7 in)
1981120.6 mm (4.7 in)
1982186.5 mm (7.3 in)
1983195.4 mm (7.7 in)
1984167.2 mm (6.6 in)
1985146.5 mm (5.8 in)
1986107.5 mm (4.2 in)
1987181.1 mm (7.1 in)
1988174.8 mm (6.9 in)
1989260.4 mm (10.3 in)
1990107.4 mm (4.2 in)
1991167.7 mm (6.6 in)
1992156.6 mm (6.2 in)
1993193.3 mm (7.6 in)
1994129.1 mm (5.1 in)
1995227.6 mm (9.0 in)
1996199.4 mm (7.9 in)
1997205.2 mm (8.1 in)
1998161.8 mm (6.4 in)
1999116.3 mm (4.6 in)
2000153.0 mm (6.0 in)
2001475.2 mm (18.7 in)
2002144.0 mm (5.7 in)
2003139.2 mm (5.5 in)
2004344.0 mm (13.5 in)
200592.4 mm (3.6 in)
2006185.7 mm (7.3 in)
2007148.6 mm (5.9 in)
2008225.1 mm (8.9 in)
2009167.6 mm (6.6 in)
2010100.9 mm (4.0 in)
2011219.2 mm (8.6 in)
2012156.2 mm (6.1 in)
2013201.8 mm (7.9 in)
2014164.4 mm (6.5 in)
2015237.3 mm (9.3 in)
2016390.9 mm (15.4 in)
2017152.4 mm (6.0 in)
2018143.5 mm (5.6 in)
2019174.3 mm (6.9 in)
2020129.3 mm (5.1 in)
2021189.5 mm (7.5 in)
202294.2 mm (3.7 in)
2023129.5 mm (5.1 in)
2024175.4 mm (6.9 in)
2025119.2 mm (4.7 in)
2026238.8 mm (9.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Port Allen by year The longest dry spell of the year at Port Allen, 1975 to 2026. The record is 56 days in 2016, marked on the chart; the median year is 24 days. 020406019801990200020102020Record: 56 days in 2016
The longest dry spell of the year at Port Allen, 1975 to 2026. The record is 56 days in 2016, marked on the chart; the median year is 24 days.
Longest dry spell (CDD) at Port Allen by year
YearLongest dry spell (CDD)
197519 days
197619 days
197721 days
197838 days
197931 days
198028 days
198116 days
198220 days
198320 days
198423 days
198514 days
198624 days
198736 days
198821 days
198918 days
199016 days
199127 days
199217 days
199323 days
199421 days
199525 days
199624 days
199740 days
199829 days
199920 days
200030 days
200139 days
200231 days
200337 days
200413 days
200536 days
200619 days
200718 days
200829 days
200925 days
201018 days
201124 days
201220 days
201316 days
201424 days
201526 days
201656 days
201726 days
201818 days
201916 days
202015 days
202121 days
202232 days
202332 days
202444 days
202516 days
202628 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

48 years, 1976 to 2025

A day with at least 107.7 mm (4.2 in) of rain is expected about once in 2 years. A day with at least 235.4 mm (9.3 in) of rain is expected about once in 100 years.

Rainfall return levels at Port Allen: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years107.7 mm (4.2 in)
5 years141.6 mm (5.6 in)
10 years164.2 mm (6.5 in)
25 years192.8 mm (7.6 in)
50 years214.1 mm (8.4 in)Longer than the 48 years of record
100 years235.4 mm (9.3 in)Longer than the 48 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, 48 years of values from 1976 to 2025.

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: 210.8 mm (8.3 in) in 2016; 204.5 mm (8.1 in) in 2001; 190.5 mm (7.5 in) in 1989.

Download the Data

  • Data for Port Allen standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Port Allen 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 . Last revised (2026-10-13).