Counties in Louisiana by average annual temperature

Plaquemines Parish had the highest average annual temperature of 64 counties in 2023, at 72.3 °F. Claiborne Parish had the lowest, at 66.1 °F. The median was 69.8 °F and the figure for Louisiana was 69.6 °F. Source: NOAA National Centers for Environmental Information.

Highest72.3Plaquemines Parish

Lowest66.1Claiborne Parish

Median69.864 counties

Louisiana69.6History

Map of counties, 2023

Under 68
68 to 69
69 to 70
70 to 71
71 to 72
72 and over

°F, 2023. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

Top 40 counties, 2023

°F. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2023 °F	Change on 2022
1	Plaquemines Parish	72.3	+3.6%
2	Terrebonne Parish	72.2	+3.4%
3	Lafourche Parish	72.1	+3.4%
4	Jefferson Parish	72	+3.6%
5	Vermilion Parish	71.9	+5%
6	Orleans Parish	71.8	+3.6%
6	St. Bernard Parish	71.8	+3.5%
6	St. Charles Parish	71.8	+3.6%
6	St. Mary Parish	71.8	+3.8%
10	Iberia Parish	71.7	+4.4%
11	Assumption Parish	71.6	+3.5%
11	Cameron Parish	71.6	+4.1%
13	St. James Parish	71.5	+3.5%
14	Lafayette Parish	71.4	+4.4%
14	St. John the Baptist Parish	71.4	+3.5%
14	St. Martin Parish	71.4	+4.1%
17	Ascension Parish	71.3	+3.6%
17	Iberville Parish	71.3	+3.9%
19	West Baton Rouge Parish	71.2	+4.1%
20	Acadia Parish	71	+4.3%
20	Calcasieu Parish	71	+4%
20	East Baton Rouge Parish	71	+4.1%
23	Jefferson Davis Parish	70.7	+4%
23	Livingston Parish	70.7	+3.7%
25	Pointe Coupee Parish	70.5	+3.8%
25	St. Tammany Parish	70.5	+3.1%
27	Beauregard Parish	70.4	+4%
28	St. Landry Parish	70.3	+4%
29	Allen Parish	70.1	+4.2%
30	West Feliciana Parish	70	+3.7%
31	Evangeline Parish	69.9	+4%
32	East Feliciana Parish	69.8	+3.7%
32	Tangipahoa Parish	69.8	+3.1%
34	Vernon Parish	69.5	+3.4%
35	Avoyelles Parish	69.4	+3.9%
35	Washington Parish	69.4	+3%
37	St. Helena Parish	69.3	+3.3%
38	Rapides Parish	69.2	+3.7%
39	Concordia Parish	69.1	+4.4%
40	Catahoula Parish	68.9	+4.4%
41	LaSalle Parish	68.6	+4.1%
41	Sabine Parish	68.6	+2.7%
43	Tensas Parish	68.5	+3.8%
44	Natchitoches Parish	68.4	+3%
45	Franklin Parish	68.3	+3.8%
45	Grant Parish	68.3	+3.6%
47	Madison Parish	68.1	+3.7%
48	Caldwell Parish	68	+3.7%
48	De Soto Parish	68	+2.6%
48	Red River Parish	68	+2.7%
51	Winn Parish	67.9	+3.3%
52	Caddo Parish	67.8	+2.4%
53	Richland Parish	67.7	+3.4%
54	Bienville Parish	67.5	+2.7%
55	Bossier Parish	67.4	+2.4%
55	East Carroll Parish	67.4	+3.2%
57	Jackson Parish	67.3	+3.1%
58	Ouachita Parish	67.2	+3.1%
58	West Carroll Parish	67.2	+3.1%
60	Morehouse Parish	66.9	+2.9%
60	Webster Parish	66.9	+2.6%
62	Lincoln Parish	66.7	+2.8%
63	Union Parish	66.5	+2.8%
64	Claiborne Parish	66.1	+2.6%

Other periods

About this ranking

Mean air temperature from January to December, in degrees Fahrenheit: the average of the 12 monthly mean temperatures. 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, so a county with mountains and valleys has one value for very different local climates. 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 average temperature, 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 average temperature, counties (Counties in Louisiana by average annual temperature, 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 average temperature, counties, Counties in Louisiana by average annual temperature, 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/average-annual-temperature/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 average temperature, counties. Counties in Louisiana by average annual temperature, 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/average-annual-temperature/louisiana-counties?period=2023.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Louisiana by average annual temperature, 2023 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/average-annual-temperature/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 average temperature, counties: Counties in Louisiana by average annual temperature, 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/average-annual-temperature/louisiana-counties?period=2023. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December average temperature, 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 average temperature, counties: Counties in Louisiana by average annual temperature, 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/average-annual-temperature/louisiana-counties?period=2023
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/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 average temperature, 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 average annual temperature?

Plaquemines Parish, with 72.3 °F in 2023, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Claiborne Parish, with 66.1 °F 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 average temperature, counties. Retrieved 2026-10-12.