Counties in Louisiana by annual precipitation

Washington Parish had the highest annual precipitation of 64 counties in 2022, at 67.12 inches. Vermilion Parish had the lowest, at 45.97 inches. The median was 56.25 inches and the figure for Louisiana was 55.58 inches. Source: NOAA National Centers for Environmental Information.

Highest67.12Washington Parish

Lowest45.97Vermilion Parish

Median56.2564 counties

Louisiana55.58History

Map of counties, 2022

Under 50
50 to 53
53 to 56
56 to 59
59 to 62
62 and over

inches, 2022. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2022

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

Full ranking

Rank	Counties	2022 inches	Change on 2021
1	Washington Parish	67.12	-25.5%
2	Livingston Parish	66.34	-30.8%
3	St. Helena Parish	66.09	-23.8%
4	Tangipahoa Parish	65.36	-30%
5	Avoyelles Parish	64.52	-12.4%
6	Jefferson Parish	64.43	-29.2%
7	East Feliciana Parish	64.25	-23.1%
8	Concordia Parish	62.88	+5.4%
9	Plaquemines Parish	62.85	-29.3%
10	St. Tammany Parish	62.05	-32.8%
11	Ascension Parish	62.03	-30.9%
12	Catahoula Parish	61.98	+13.3%
13	St. Charles Parish	61.56	-31.1%
14	St. John the Baptist Parish	61.44	-32.2%
15	Caldwell Parish	61.35	+39.6%
16	Franklin Parish	60.55	+31.5%
17	LaSalle Parish	60.14	+8.6%
18	Orleans Parish	60.02	-32.5%
19	Rapides Parish	59.94	-7.7%
20	St. James Parish	59.27	-31.6%
21	West Feliciana Parish	59.26	-24.2%
22	St. Bernard Parish	59.11	-34.2%
23	Lafourche Parish	58.96	-30.9%
24	East Baton Rouge Parish	58.79	-31.3%
25	Madison Parish	58.39	+25.5%
26	Grant Parish	58.37	-1.1%
27	Tensas Parish	58.35	+12.5%
28	Richland Parish	58.21	+28.8%
29	Winn Parish	57.51	+11.6%
30	Iberville Parish	57.37	-29.8%
31	Jackson Parish	57.21	+17.7%
32	Assumption Parish	56.35	-31.6%
33	Evangeline Parish	56.15	-22.6%
34	Ouachita Parish	56.08	+22.7%
35	West Baton Rouge Parish	55.76	-32.3%
36	Pointe Coupee Parish	55.51	-27.1%
37	Lincoln Parish	54.41	+7.1%
38	Vernon Parish	53.96	-19.7%
39	Natchitoches Parish	53.93	-0.9%
40	Bienville Parish	53.71	+7%
41	East Carroll Parish	53.5	+13.7%
41	St. Landry Parish	53.5	-26.5%
43	Union Parish	53.28	+7.5%
44	Morehouse Parish	52.86	+16.7%
45	St. Martin Parish	52.7	-28.6%
46	Sabine Parish	52.64	-6.1%
47	Allen Parish	52.56	-15%
48	West Carroll Parish	51.65	+9.4%
49	Lafayette Parish	51.61	-28.4%
50	Beauregard Parish	51.39	-19.2%
51	Terrebonne Parish	50.86	-34.1%
52	Claiborne Parish	50.66	-7.1%
53	Calcasieu Parish	50.56	-22%
54	Red River Parish	50.38	+3.8%
55	Iberia Parish	50.25	-28.1%
56	Webster Parish	49.89	-3%
57	De Soto Parish	49.32	-1.9%
58	Acadia Parish	49.12	-27.6%
59	St. Mary Parish	48.55	-32.9%
60	Cameron Parish	48.49	-27.4%
61	Bossier Parish	48.12	-4.4%
62	Jefferson Davis Parish	48.04	-24.8%
63	Caddo Parish	46.99	-8.3%
64	Vermilion Parish	45.97	-30.3%

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, 2022) [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, 2022. 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=2022. 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, 2022. 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=2022.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Louisiana by annual precipitation, 2022 [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=2022 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_louisiana_by_2022,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Louisiana by annual precipitation, 2022}},
  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=2022. 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, 2022
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=2022
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/louisiana-counties?period=2022.
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?

Washington Parish, with 67.12 inches in 2022, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Vermilion Parish, with 45.97 inches in 2022.

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.