Counties in Louisiana by average annual temperature

Terrebonne Parish had the highest average annual temperature of 64 counties in 2018, at 71.3 °F. West Carroll Parish had the lowest, at 64.8 °F. The median was 67.8 °F and the figure for Louisiana was 67.8 °F. Source: NOAA National Centers for Environmental Information.

Highest71.3Terrebonne Parish

Lowest64.8West Carroll Parish

Median67.864 counties

Louisiana67.8History

Map of counties, 2018

Under 66
66 to 68
68 to 69
69 to 70
70 and over

°F, 2018. 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, 2018

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

Full ranking

Rank	Counties	2018 °F	Change on 2017
1	Terrebonne Parish	71.3	-0.8%
2	Lafourche Parish	71	-0.3%
3	Plaquemines Parish	70.7	-0.4%
4	Jefferson Parish	70.6	-0.1%
5	St. Charles Parish	70.4	-0.1%
6	Cameron Parish	70.2	-0.8%
7	St. Bernard Parish	70.1	-0.4%
7	St. Mary Parish	70.1	-1.1%
9	Assumption Parish	70	-1%
9	Orleans Parish	70	-0.6%
11	St. James Parish	69.9	-0.6%
11	St. John the Baptist Parish	69.9	-0.3%
13	Vermilion Parish	69.8	-1.3%
14	Iberia Parish	69.6	-1%
15	Calcasieu Parish	69.4	-1.1%
16	Ascension Parish	69.3	-0.7%
16	St. Martin Parish	69.3	-1.1%
18	Lafayette Parish	69.2	-1.4%
19	Iberville Parish	69	-1%
20	Acadia Parish	68.9	-1.3%
20	Jefferson Davis Parish	68.9	-1.1%
22	Livingston Parish	68.8	-0.4%
23	St. Tammany Parish	68.7	-0.9%
23	West Baton Rouge Parish	68.7	-0.9%
25	East Baton Rouge Parish	68.6	-0.6%
26	Tangipahoa Parish	68.5	-0.4%
27	St. Landry Parish	68.3	-1.7%
28	Pointe Coupee Parish	68.1	-1.4%
28	St. Helena Parish	68.1	-0.3%
30	Beauregard Parish	68	-1.4%
30	East Feliciana Parish	68	-0.3%
32	Evangeline Parish	67.8	-1.9%
33	Allen Parish	67.7	-1.3%
33	West Feliciana Parish	67.7	-1%
35	Washington Parish	67.6	-0.9%
36	Avoyelles Parish	67.3	-2.2%
37	Rapides Parish	67.2	-2%
38	Vernon Parish	67.1	-1.9%
39	Natchitoches Parish	66.7	-1.9%
40	Red River Parish	66.5	-1.6%
40	Sabine Parish	66.5	-1.9%
42	Concordia Parish	66.4	-2.2%
42	Grant Parish	66.4	-2.1%
42	LaSalle Parish	66.4	-1.6%
45	Bossier Parish	66.3	-1.2%
45	Caddo Parish	66.3	-1.5%
45	Catahoula Parish	66.3	-2.1%
48	De Soto Parish	66.1	-1.8%
48	Tensas Parish	66.1	-2.1%
48	Winn Parish	66.1	-1.6%
51	Bienville Parish	66	-1.2%
52	Franklin Parish	65.9	-2.1%
53	Caldwell Parish	65.8	-1.5%
53	Webster Parish	65.8	-1.1%
55	Madison Parish	65.7	-2.8%
56	Jackson Parish	65.5	-1.4%
57	Richland Parish	65.4	-2.2%
58	Ouachita Parish	65.3	-1.4%
59	Lincoln Parish	65.2	-1.1%
60	Morehouse Parish	65.1	-2.1%
60	Union Parish	65.1	-1.5%
62	East Carroll Parish	64.9	-3.1%
63	Claiborne Parish	64.8	-1.2%
63	West Carroll Parish	64.8	-2.8%

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, 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 average temperature, counties, Counties in Louisiana by average annual temperature, 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/average-annual-temperature/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 average temperature, counties. Counties in Louisiana by average annual temperature, 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/average-annual-temperature/louisiana-counties?period=2018.

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, 2018 [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=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 average temperature, counties: Counties in Louisiana by average annual temperature, 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/average-annual-temperature/louisiana-counties?period=2018. 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, 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/average-annual-temperature/louisiana-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/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 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?

Terrebonne Parish, with 71.3 °F in 2018, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

West Carroll Parish, with 64.8 °F 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 average temperature, counties. Retrieved 2026-10-12.