Data / Rankings / Annual precipitation / Counties in Louisiana

Counties in Louisiana by annual precipitation

Washington Parish had the highest annual precipitation of 64 counties in 2018, at 74.94 inches. Concordia Parish had the lowest, at 53.7 inches. The median was 65.75 inches and the figure for Louisiana was 66.39 inches. Source: NOAA National Centers for Environmental Information.

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Highest74.94Washington Parish
Lowest53.7Concordia Parish
Median65.7564 counties
Louisiana66.39History

Map of counties, 2018

Acadia Parish: 62.44 inchesAllen Parish: 58.32 inchesAscension Parish: 67.07 inchesAssumption Parish: 66.99 inchesAvoyelles Parish: 57.76 inchesBeauregard Parish: 65.56 inchesBienville Parish: 72.18 inchesBossier Parish: 65.91 inchesCaddo Parish: 65.41 inchesCalcasieu Parish: 66.3 inchesCaldwell Parish: 69.51 inchesCameron Parish: 68.91 inchesCatahoula Parish: 59.37 inchesClaiborne Parish: 66.87 inchesConcordia Parish: 53.7 inchesDe Soto Parish: 69.02 inchesEast Baton Rouge Parish: 63 inchesEast Carroll Parish: 64.28 inchesEast Feliciana Parish: 60.65 inchesEvangeline Parish: 62 inchesFranklin Parish: 62.08 inchesGrant Parish: 71.97 inchesIberia Parish: 67.92 inchesIberville Parish: 65 inchesJackson Parish: 72.55 inchesJefferson Parish: 65.84 inchesJefferson Davis Parish: 60.68 inchesLafayette Parish: 61.32 inchesLafourche Parish: 67.03 inchesLaSalle Parish: 67.04 inchesLincoln Parish: 71.75 inchesLivingston Parish: 70.07 inchesMadison Parish: 60.49 inchesMorehouse Parish: 65.93 inchesNatchitoches Parish: 74.71 inchesOrleans Parish: 63.16 inchesOuachita Parish: 70.11 inchesPlaquemines Parish: 65.5 inchesPointe Coupee Parish: 58.05 inchesRapides Parish: 65.97 inchesRed River Parish: 70.96 inchesRichland Parish: 66.94 inchesSabine Parish: 72.61 inchesSt. Bernard Parish: 64.71 inchesSt. Charles Parish: 63.97 inchesSt. Helena Parish: 65.35 inchesSt. James Parish: 65.03 inchesSt. John the Baptist Parish: 62.23 inchesSt. Landry Parish: 61.57 inchesSt. Martin Parish: 62.38 inchesSt. Mary Parish: 65.66 inchesSt. Tammany Parish: 70.2 inchesTangipahoa Parish: 68.85 inchesTensas Parish: 55.95 inchesTerrebonne Parish: 63.66 inchesUnion Parish: 69.27 inchesVermilion Parish: 73.17 inchesVernon Parish: 74 inchesWashington Parish: 74.94 inchesWebster Parish: 68.19 inchesWest Baton Rouge Parish: 60.04 inchesWest Carroll Parish: 63.3 inchesWest Feliciana Parish: 57.76 inchesWinn Parish: 73.44 inches
  • Under 61
  • 61 to 64
  • 64 to 66
  • 66 to 67
  • 67 to 71
  • 71 and over
inches, 2018. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2018

Washington Parish: 74.94 inchesWashington Parish74.94Natchitoches Parish: 74.71 inchesNatchitoches Parish74.71Vernon Parish: 74 inchesVernon Parish74Winn Parish: 73.44 inchesWinn Parish73.44Vermilion Parish: 73.17 inchesVermilion Parish73.17Sabine Parish: 72.61 inchesSabine Parish72.61Jackson Parish: 72.55 inchesJackson Parish72.55Bienville Parish: 72.18 inchesBienville Parish72.18Grant Parish: 71.97 inchesGrant Parish71.97Lincoln Parish: 71.75 inchesLincoln Parish71.75Red River Parish: 70.96 inchesRed River Parish70.96St. Tammany Parish: 70.2 inchesSt. Tammany Parish70.2Ouachita Parish: 70.11 inchesOuachita Parish70.11Livingston Parish: 70.07 inchesLivingston Parish70.07Caldwell Parish: 69.51 inchesCaldwell Parish69.51Union Parish: 69.27 inchesUnion Parish69.27De Soto Parish: 69.02 inchesDe Soto Parish69.02Cameron Parish: 68.91 inchesCameron Parish68.91Tangipahoa Parish: 68.85 inchesTangipahoa Parish68.85Webster Parish: 68.19 inchesWebster Parish68.19Iberia Parish: 67.92 inchesIberia Parish67.92Ascension Parish: 67.07 inchesAscension Parish67.07LaSalle Parish: 67.04 inchesLaSalle Parish67.04Lafourche Parish: 67.03 inchesLafourche Parish67.03Assumption Parish: 66.99 inchesAssumption Parish66.99Richland Parish: 66.94 inchesRichland Parish66.94Claiborne Parish: 66.87 inchesClaiborne Parish66.87Calcasieu Parish: 66.3 inchesCalcasieu Parish66.3Rapides Parish: 65.97 inchesRapides Parish65.97Morehouse Parish: 65.93 inchesMorehouse Parish65.93Bossier Parish: 65.91 inchesBossier Parish65.91Jefferson Parish: 65.84 inchesJefferson Parish65.84St. Mary Parish: 65.66 inchesSt. Mary Parish65.66Beauregard Parish: 65.56 inchesBeauregard Parish65.56Plaquemines Parish: 65.5 inchesPlaquemines Parish65.5Caddo Parish: 65.41 inchesCaddo Parish65.41St. Helena Parish: 65.35 inchesSt. Helena Parish65.35St. James Parish: 65.03 inchesSt. James Parish65.03Iberville Parish: 65 inchesIberville Parish65St. Bernard Parish: 64.71 inchesSt. Bernard Parish64.71Washington Parish: 74.94 inchesWashington Parish74.94Natchitoches Parish: 74.71 inchesNatchitoches Parish74.71Vernon Parish: 74 inchesVernon Parish74Winn Parish: 73.44 inchesWinn Parish73.44Vermilion Parish: 73.17 inchesVermilion Parish73.17Sabine Parish: 72.61 inchesSabine Parish72.61Jackson Parish: 72.55 inchesJackson Parish72.55Bienville Parish: 72.18 inchesBienville Parish72.18Grant Parish: 71.97 inchesGrant Parish71.97Lincoln Parish: 71.75 inchesLincoln Parish71.75Red River Parish: 70.96 inchesRed River Parish70.96St. Tammany Parish: 70.2 inchesSt. Tammany Parish70.2Ouachita Parish: 70.11 inchesOuachita Parish70.11Livingston Parish: 70.07 inchesLivingston Parish70.07Caldwell Parish: 69.51 inchesCaldwell Parish69.51Union Parish: 69.27 inchesUnion Parish69.27De Soto Parish: 69.02 inchesDe Soto Parish69.02Cameron Parish: 68.91 inchesCameron Parish68.91Tangipahoa Parish: 68.85 inchesTangipahoa Parish68.85Webster Parish: 68.19 inchesWebster Parish68.19Iberia Parish: 67.92 inchesIberia Parish67.92Ascension Parish: 67.07 inchesAscension Parish67.07LaSalle Parish: 67.04 inchesLaSalle Parish67.04Lafourche Parish: 67.03 inchesLafourche Parish67.03Assumption Parish: 66.99 inchesAssumption Parish66.99Richland Parish: 66.94 inchesRichland Parish66.94Claiborne Parish: 66.87 inchesClaiborne Parish66.87Calcasieu Parish: 66.3 inchesCalcasieu Parish66.3Rapides Parish: 65.97 inchesRapides Parish65.97Morehouse Parish: 65.93 inchesMorehouse Parish65.93Bossier Parish: 65.91 inchesBossier Parish65.91Jefferson Parish: 65.84 inchesJefferson Parish65.84St. Mary Parish: 65.66 inchesSt. Mary Parish65.66Beauregard Parish: 65.56 inchesBeauregard Parish65.56Plaquemines Parish: 65.5 inchesPlaquemines Parish65.5Caddo Parish: 65.41 inchesCaddo Parish65.41St. Helena Parish: 65.35 inchesSt. Helena Parish65.35St. James Parish: 65.03 inchesSt. James Parish65.03Iberville Parish: 65 inchesIberville Parish65St. Bernard Parish: 64.71 inchesSt. Bernard Parish64.71
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2018
inches		Change on 2017
1Washington Parish74.94-7.1%
2Natchitoches Parish74.71+27.8%
3Vernon Parish74+7.3%
4Winn Parish73.44+44.3%
5Vermilion Parish73.17+5.4%
6Sabine Parish72.61+12.2%
7Jackson Parish72.55+59%
8Bienville Parish72.18+56.4%
9Grant Parish71.97+30.8%
10Lincoln Parish71.75+61.1%
11Red River Parish70.96+42%
12St. Tammany Parish70.2-7.8%
13Ouachita Parish70.11+44.3%
14Livingston Parish70.07-10.8%
15Caldwell Parish69.51+52.4%
16Union Parish69.27+42.6%
17De Soto Parish69.02+38.4%
18Cameron Parish68.91-15.8%
19Tangipahoa Parish68.85-12.6%
20Webster Parish68.19+51.7%
21Iberia Parish67.92-7.3%
22Ascension Parish67.07-11.2%
23LaSalle Parish67.04+25.2%
24Lafourche Parish67.03-4.2%
25Assumption Parish66.99-7.6%
26Richland Parish66.94+40.8%
27Claiborne Parish66.87+48.4%
28Calcasieu Parish66.3-24.8%
29Rapides Parish65.97+11.3%
30Morehouse Parish65.93+33.1%
31Bossier Parish65.91+54.3%
32Jefferson Parish65.84-5.3%
33St. Mary Parish65.66-12.2%
34Beauregard Parish65.56-19.4%
35Plaquemines Parish65.5-0.4%
36Caddo Parish65.41+55.9%
37St. Helena Parish65.35-11.5%
38St. James Parish65.03-9%
39Iberville Parish65-16%
40St. Bernard Parish64.71-6.7%
41East Carroll Parish64.28+26.4%
42St. Charles Parish63.97-10.6%
43Terrebonne Parish63.66-11.1%
44West Carroll Parish63.3+26.7%
45Orleans Parish63.16-8.7%
46East Baton Rouge Parish63-11.4%
47Acadia Parish62.44-14.5%
48St. Martin Parish62.38-15.5%
49St. John the Baptist Parish62.23-17.5%
50Franklin Parish62.08+34.8%
51Evangeline Parish62-5.2%
52St. Landry Parish61.57-9.3%
53Lafayette Parish61.32-13.5%
54Jefferson Davis Parish60.68-24.9%
55East Feliciana Parish60.65-19.6%
56Madison Parish60.49+16.5%
57West Baton Rouge Parish60.04-14.7%
58Catahoula Parish59.37+12.3%
59Allen Parish58.32-17.5%
60Pointe Coupee Parish58.05-19.3%
61Avoyelles Parish57.76-10.7%
61West Feliciana Parish57.76-26.3%
63Tensas Parish55.95+4.8%
64Concordia Parish53.7-5.6%

Other periods

About this ranking

Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. NOAA computes it from its climate divisional dataset (nClimDiv): station readings interpolated onto a 5 km grid and averaged over the area.

Values are area averages, not the reading at one weather station. NOAA revises the last two years every month.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

NOAA National Centers for Environmental Information. (2026). NOAA Climate at a Glance, January to December precipitation, counties (Counties in Louisiana by annual precipitation, 2018) [Data set]. Retrieved October 12, 2026, from https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping

MLA 9

NOAA Climate at a Glance, January to December precipitation, counties, Counties in Louisiana by annual precipitation, 2018. NOAA National Centers for Environmental Information, 6 Oct. 2026, https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Counties in Louisiana by annual precipitation, 2018. Dataset. Accessed October 12, 2026. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Also distributed by Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Louisiana by annual precipitation, 2018 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_louisiana_by_2018,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Louisiana by annual precipitation, 2018}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - NOAA National Centers for Environmental Information
TI  - NOAA Climate at a Glance, January to December precipitation, counties: Counties in Louisiana by annual precipitation, 2018
PY  - 2026
DA  - 2026/10/06
PB  - NOAA National Centers for Environmental Information
DB  - Invokely
UR  - https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping
L2  - https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2018.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, counties. From the NOAA Monthly U.S. Climate Divisional Database (nClimDiv), doi:10.7289/V5M32STR. https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping. Retrieved 2026-10-12.
ER  -
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Rank Counties in Louisiana by annual precipitation using official data, and cite the source.
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Questions

Which county has the highest annual precipitation?

Washington Parish, with 74.94 inches in 2018, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Concordia Parish, with 53.7 inches in 2018.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Annual precipitation: other rankings

Counties in Louisiana: more rankings