Data / Rankings / Annual precipitation / Counties in Louisiana

Counties in Louisiana by annual precipitation

Caldwell Parish had the highest annual precipitation of 64 counties in 2020, at 80.46 inches. Terrebonne Parish had the lowest, at 48.62 inches. The median was 66.63 inches and the figure for Louisiana was 66.96 inches. Source: NOAA National Centers for Environmental Information.

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Highest80.46Caldwell Parish
Lowest48.62Terrebonne Parish
Median66.6364 counties
Louisiana66.96History

Map of counties, 2020

Acadia Parish: 62.56 inchesAllen Parish: 54.99 inchesAscension Parish: 66.14 inchesAssumption Parish: 54.91 inchesAvoyelles Parish: 69.85 inchesBeauregard Parish: 60.01 inchesBienville Parish: 70.02 inchesBossier Parish: 67.87 inchesCaddo Parish: 64.05 inchesCalcasieu Parish: 58.24 inchesCaldwell Parish: 80.46 inchesCameron Parish: 57.74 inchesCatahoula Parish: 75.23 inchesClaiborne Parish: 70.01 inchesConcordia Parish: 68.98 inchesDe Soto Parish: 66.62 inchesEast Baton Rouge Parish: 64.18 inchesEast Carroll Parish: 72.26 inchesEast Feliciana Parish: 61.82 inchesEvangeline Parish: 64.54 inchesFranklin Parish: 79.24 inchesGrant Parish: 80.15 inchesIberia Parish: 62.95 inchesIberville Parish: 64.46 inchesJackson Parish: 73.86 inchesJefferson Parish: 66.63 inchesJefferson Davis Parish: 57.81 inchesLafayette Parish: 65.88 inchesLafourche Parish: 56.16 inchesLaSalle Parish: 75.69 inchesLincoln Parish: 70.04 inchesLivingston Parish: 68.59 inchesMadison Parish: 73.61 inchesMorehouse Parish: 73.37 inchesNatchitoches Parish: 78.89 inchesOrleans Parish: 63.53 inchesOuachita Parish: 72.68 inchesPlaquemines Parish: 61.87 inchesPointe Coupee Parish: 62.52 inchesRapides Parish: 77.15 inchesRed River Parish: 70.97 inchesRichland Parish: 76.41 inchesSabine Parish: 73.16 inchesSt. Bernard Parish: 62.67 inchesSt. Charles Parish: 66.27 inchesSt. Helena Parish: 64.1 inchesSt. James Parish: 60.06 inchesSt. John the Baptist Parish: 65.97 inchesSt. Landry Parish: 67.48 inchesSt. Martin Parish: 63.3 inchesSt. Mary Parish: 56.91 inchesSt. Tammany Parish: 65.81 inchesTangipahoa Parish: 66.7 inchesTensas Parish: 75.28 inchesTerrebonne Parish: 48.62 inchesUnion Parish: 71.54 inchesVermilion Parish: 59.5 inchesVernon Parish: 74.12 inchesWashington Parish: 70.4 inchesWebster Parish: 68.31 inchesWest Baton Rouge Parish: 63.52 inchesWest Carroll Parish: 72.63 inchesWest Feliciana Parish: 60.88 inchesWinn Parish: 78.78 inches
  • Under 60
  • 60 to 64
  • 64 to 67
  • 67 to 70
  • 70 to 74
  • 74 and over
inches, 2020. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2020

Caldwell Parish: 80.46 inchesCaldwell Parish80.46Grant Parish: 80.15 inchesGrant Parish80.15Franklin Parish: 79.24 inchesFranklin Parish79.24Natchitoches Parish: 78.89 inchesNatchitoches Parish78.89Winn Parish: 78.78 inchesWinn Parish78.78Rapides Parish: 77.15 inchesRapides Parish77.15Richland Parish: 76.41 inchesRichland Parish76.41LaSalle Parish: 75.69 inchesLaSalle Parish75.69Tensas Parish: 75.28 inchesTensas Parish75.28Catahoula Parish: 75.23 inchesCatahoula Parish75.23Vernon Parish: 74.12 inchesVernon Parish74.12Jackson Parish: 73.86 inchesJackson Parish73.86Madison Parish: 73.61 inchesMadison Parish73.61Morehouse Parish: 73.37 inchesMorehouse Parish73.37Sabine Parish: 73.16 inchesSabine Parish73.16Ouachita Parish: 72.68 inchesOuachita Parish72.68West Carroll Parish: 72.63 inchesWest Carroll Parish72.63East Carroll Parish: 72.26 inchesEast Carroll Parish72.26Union Parish: 71.54 inchesUnion Parish71.54Red River Parish: 70.97 inchesRed River Parish70.97Washington Parish: 70.4 inchesWashington Parish70.4Lincoln Parish: 70.04 inchesLincoln Parish70.04Bienville Parish: 70.02 inchesBienville Parish70.02Claiborne Parish: 70.01 inchesClaiborne Parish70.01Avoyelles Parish: 69.85 inchesAvoyelles Parish69.85Concordia Parish: 68.98 inchesConcordia Parish68.98Livingston Parish: 68.59 inchesLivingston Parish68.59Webster Parish: 68.31 inchesWebster Parish68.31Bossier Parish: 67.87 inchesBossier Parish67.87St. Landry Parish: 67.48 inchesSt. Landry Parish67.48Tangipahoa Parish: 66.7 inchesTangipahoa Parish66.7Jefferson Parish: 66.63 inchesJefferson Parish66.63De Soto Parish: 66.62 inchesDe Soto Parish66.62St. Charles Parish: 66.27 inchesSt. Charles Parish66.27Ascension Parish: 66.14 inchesAscension Parish66.14St. John the Baptist Parish: 65.97 inchesSt. John the Baptist Parish65.97Lafayette Parish: 65.88 inchesLafayette Parish65.88St. Tammany Parish: 65.81 inchesSt. Tammany Parish65.81Evangeline Parish: 64.54 inchesEvangeline Parish64.54Iberville Parish: 64.46 inchesIberville Parish64.46Caldwell Parish: 80.46 inchesCaldwell Parish80.46Grant Parish: 80.15 inchesGrant Parish80.15Franklin Parish: 79.24 inchesFranklin Parish79.24Natchitoches Parish: 78.89 inchesNatchitoches Parish78.89Winn Parish: 78.78 inchesWinn Parish78.78Rapides Parish: 77.15 inchesRapides Parish77.15Richland Parish: 76.41 inchesRichland Parish76.41LaSalle Parish: 75.69 inchesLaSalle Parish75.69Tensas Parish: 75.28 inchesTensas Parish75.28Catahoula Parish: 75.23 inchesCatahoula Parish75.23Vernon Parish: 74.12 inchesVernon Parish74.12Jackson Parish: 73.86 inchesJackson Parish73.86Madison Parish: 73.61 inchesMadison Parish73.61Morehouse Parish: 73.37 inchesMorehouse Parish73.37Sabine Parish: 73.16 inchesSabine Parish73.16Ouachita Parish: 72.68 inchesOuachita Parish72.68West Carroll Parish: 72.63 inchesWest Carroll Parish72.63East Carroll Parish: 72.26 inchesEast Carroll Parish72.26Union Parish: 71.54 inchesUnion Parish71.54Red River Parish: 70.97 inchesRed River Parish70.97Washington Parish: 70.4 inchesWashington Parish70.4Lincoln Parish: 70.04 inchesLincoln Parish70.04Bienville Parish: 70.02 inchesBienville Parish70.02Claiborne Parish: 70.01 inchesClaiborne Parish70.01Avoyelles Parish: 69.85 inchesAvoyelles Parish69.85Concordia Parish: 68.98 inchesConcordia Parish68.98Livingston Parish: 68.59 inchesLivingston Parish68.59Webster Parish: 68.31 inchesWebster Parish68.31Bossier Parish: 67.87 inchesBossier Parish67.87St. Landry Parish: 67.48 inchesSt. Landry Parish67.48Tangipahoa Parish: 66.7 inchesTangipahoa Parish66.7Jefferson Parish: 66.63 inchesJefferson Parish66.63De Soto Parish: 66.62 inchesDe Soto Parish66.62St. Charles Parish: 66.27 inchesSt. Charles Parish66.27Ascension Parish: 66.14 inchesAscension Parish66.14St. John the Baptist Parish: 65.97 inchesSt. John the Baptist Parish65.97Lafayette Parish: 65.88 inchesLafayette Parish65.88St. Tammany Parish: 65.81 inchesSt. Tammany Parish65.81Evangeline Parish: 64.54 inchesEvangeline Parish64.54Iberville Parish: 64.46 inchesIberville Parish64.46
inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

RankCounties2020
inches		Change on 2019
1Caldwell Parish80.46+24.9%
2Grant Parish80.15+30.8%
3Franklin Parish79.24+25.1%
4Natchitoches Parish78.89+25%
5Winn Parish78.78+25%
6Rapides Parish77.15+26.2%
7Richland Parish76.41+16.4%
8LaSalle Parish75.69+30%
9Tensas Parish75.28+22.7%
10Catahoula Parish75.23+26.9%
11Vernon Parish74.12+22.8%
12Jackson Parish73.86+11.4%
13Madison Parish73.61+13.5%
14Morehouse Parish73.37+10.4%
15Sabine Parish73.16+23.6%
16Ouachita Parish72.68+11.6%
17West Carroll Parish72.63+5.7%
18East Carroll Parish72.26+7.5%
19Union Parish71.54+7%
20Red River Parish70.97+28.1%
21Washington Parish70.4+12.5%
22Lincoln Parish70.04+4.8%
23Bienville Parish70.02+21.9%
24Claiborne Parish70.01+13.9%
25Avoyelles Parish69.85+16.3%
26Concordia Parish68.98+13.7%
27Livingston Parish68.59+0.7%
28Webster Parish68.31+24.6%
29Bossier Parish67.87+34.4%
30St. Landry Parish67.48+4.2%
31Tangipahoa Parish66.7+7.4%
32Jefferson Parish66.63+5.5%
33De Soto Parish66.62+29.6%
34St. Charles Parish66.27+6.5%
35Ascension Parish66.14+7.1%
36St. John the Baptist Parish65.97+11.7%
37Lafayette Parish65.88-0.4%
38St. Tammany Parish65.81+6.3%
39Evangeline Parish64.54-2.5%
40Iberville Parish64.46+1.9%
41East Baton Rouge Parish64.18+0.8%
42St. Helena Parish64.1+2%
43Caddo Parish64.05+31.2%
44Orleans Parish63.53-3.4%
45West Baton Rouge Parish63.52+1.7%
46St. Martin Parish63.3+0.4%
47Iberia Parish62.95-2.1%
48St. Bernard Parish62.67-1.9%
49Acadia Parish62.56-6.5%
50Pointe Coupee Parish62.52-2.3%
51Plaquemines Parish61.87+0.2%
52East Feliciana Parish61.82-0.6%
53West Feliciana Parish60.88-3.2%
54St. James Parish60.06+9.1%
55Beauregard Parish60.01-9%
56Vermilion Parish59.5-5.6%
57Calcasieu Parish58.24-16%
58Jefferson Davis Parish57.81-15.1%
59Cameron Parish57.74-11.8%
60St. Mary Parish56.91-4.6%
61Lafourche Parish56.16+1.9%
62Allen Parish54.99-20.2%
63Assumption Parish54.91-3.2%
64Terrebonne Parish48.62-7.9%

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, 2020) [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, 2020. 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=2020. 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, 2020. 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=2020.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Louisiana by annual precipitation, 2020 [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=2020 (Accessed: 12 October 2026).

BibTeX
@misc{noaa_counties_in_louisiana_by_2020,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Louisiana by annual precipitation, 2020}},
  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=2020. 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, 2020
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=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2020.
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?

Caldwell Parish, with 80.46 inches in 2020, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Terrebonne Parish, with 48.62 inches in 2020.

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