Counties in Louisiana by annual precipitation

Bossier Parish had the highest annual precipitation of 64 counties in 2023, at 51.8 inches. Terrebonne Parish had the lowest, at 35.69 inches. The median was 43.88 inches and the figure for Louisiana was 43.66 inches. Source: NOAA National Centers for Environmental Information.

Highest51.8Bossier Parish

Lowest35.69Terrebonne Parish

Median43.8864 counties

Louisiana43.66History

Map of counties, 2023

Under 40
40 to 43
43 to 44
44 to 46
46 to 47
47 and over

inches, 2023. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2023 inches	Change on 2022
1	Bossier Parish	51.8	+7.6%
2	Union Parish	51.63	-3.1%
3	Caddo Parish	50.77	+8%
4	Acadia Parish	49.9	+1.6%
5	Claiborne Parish	49.02	-3.2%
6	Webster Parish	48.75	-2.3%
7	Livingston Parish	48.05	-27.6%
8	East Baton Rouge Parish	47.86	-18.6%
9	Lafayette Parish	47.84	-7.3%
10	St. Helena Parish	47.67	-27.9%
11	Iberville Parish	47.58	-17.1%
12	Washington Parish	47.41	-29.4%
13	St. Landry Parish	47.26	-11.7%
14	St. Martin Parish	47.23	-10.4%
15	Jefferson Davis Parish	46.96	-2.2%
16	De Soto Parish	46.89	-4.9%
16	West Baton Rouge Parish	46.89	-15.9%
18	East Feliciana Parish	46.66	-27.4%
19	Ascension Parish	46.52	-25%
20	Assumption Parish	46.37	-17.7%
21	Vermilion Parish	45.9	-0.2%
22	Pointe Coupee Parish	45.53	-18%
23	Iberia Parish	45.18	-10.1%
24	Lincoln Parish	45.14	-17%
25	Tangipahoa Parish	45.05	-31.1%
26	Sabine Parish	45.02	-14.5%
27	St. James Parish	44.82	-24.4%
28	Red River Parish	44.81	-11.1%
29	Evangeline Parish	44.65	-20.5%
30	West Feliciana Parish	44.29	-25.3%
31	Avoyelles Parish	44.16	-31.6%
32	Bienville Parish	43.91	-18.2%
33	Morehouse Parish	43.85	-17%
34	St. Tammany Parish	43.82	-29.4%
35	Allen Parish	43.53	-17.2%
36	Jackson Parish	43.42	-24.1%
37	Ouachita Parish	43.36	-22.7%
38	Madison Parish	43.25	-25.9%
39	St. Mary Parish	43.19	-11%
40	St. Bernard Parish	43.13	-27%
41	Plaquemines Parish	43.11	-31.4%
42	Jefferson Parish	42.91	-33.4%
43	Orleans Parish	42.56	-29.1%
44	Cameron Parish	42.36	-12.6%
45	St. John the Baptist Parish	42.12	-31.4%
46	Natchitoches Parish	41.84	-22.4%
47	St. Charles Parish	41.18	-33.1%
48	Beauregard Parish	41.09	-20%
49	Calcasieu Parish	41.06	-18.8%
50	Franklin Parish	40.96	-32.4%
51	Tensas Parish	40.84	-30%
52	Rapides Parish	40.64	-32.2%
53	Richland Parish	40.44	-30.5%
54	Winn Parish	40.33	-29.9%
55	East Carroll Parish	39.98	-25.3%
56	Vernon Parish	39.88	-26.1%
57	Concordia Parish	39.84	-36.6%
58	Caldwell Parish	39.4	-35.8%
59	Catahoula Parish	39.09	-36.9%
60	West Carroll Parish	38.73	-25%
61	Lafourche Parish	38.7	-34.4%
62	Grant Parish	38.41	-34.2%
63	LaSalle Parish	38.07	-36.7%
64	Terrebonne Parish	35.69	-29.8%

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, 2023) [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, 2023. 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=2023. 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, 2023. 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=2023.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Louisiana by annual precipitation, 2023 [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=2023 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_louisiana_by_2023,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Louisiana by annual precipitation, 2023}},
  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=2023. 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, 2023
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=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2023.
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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Questions

Which county has the highest annual precipitation?

Bossier Parish, with 51.8 inches in 2023, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Terrebonne Parish, with 35.69 inches in 2023.

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.