Counties in Louisiana by average annual temperature

Plaquemines Parish had the highest average annual temperature of 64 counties in 2015, at 71.7 °F. Claiborne Parish had the lowest, at 64.6 °F. The median was 68.2 °F and the figure for Louisiana was 68.1 °F. Source: NOAA National Centers for Environmental Information.

Highest71.7Plaquemines Parish

Lowest64.6Claiborne Parish

Median68.264 counties

Louisiana68.1History

Map of counties, 2015

Under 66
66 to 67
67 to 68
68 to 69
69 to 70
70 and over

°F, 2015. 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, 2015

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

Full ranking

Rank	Counties	2015 °F	Change on 2014
1	Plaquemines Parish	71.7	+4.8%
2	Terrebonne Parish	71.3	+4.1%
3	Lafourche Parish	71.2	+4.7%
4	Jefferson Parish	70.9	+4.4%
5	St. Charles Parish	70.6	+4.4%
6	Assumption Parish	70.5	+4.6%
6	St. Bernard Parish	70.5	+4.6%
8	Orleans Parish	70.4	+4.6%
8	St. Mary Parish	70.4	+4%
10	St. James Parish	70.3	+4.9%
11	St. John the Baptist Parish	70.2	+4.9%
11	Vermilion Parish	70.2	+4.5%
13	Iberia Parish	70.1	+4.6%
14	Ascension Parish	69.9	+5%
15	Cameron Parish	69.7	+3.6%
15	St. Martin Parish	69.7	+4.3%
17	Lafayette Parish	69.6	+4.5%
18	Iberville Parish	69.5	+4.5%
19	Acadia Parish	69.3	+4.7%
20	Calcasieu Parish	69.1	+3.9%
20	Livingston Parish	69.1	+5.2%
20	St. Tammany Parish	69.1	+4.7%
20	West Baton Rouge Parish	69.1	+4.7%
24	East Baton Rouge Parish	69	+5%
25	Jefferson Davis Parish	68.9	+3.9%
26	Pointe Coupee Parish	68.8	+5%
26	St. Landry Parish	68.8	+4.7%
26	Tangipahoa Parish	68.8	+5.7%
29	West Feliciana Parish	68.3	+5.2%
30	East Feliciana Parish	68.2	+5.4%
30	Evangeline Parish	68.2	+4.8%
30	St. Helena Parish	68.2	+5.4%
33	Washington Parish	68.1	+5.3%
34	Avoyelles Parish	67.9	+4.5%
35	Allen Parish	67.8	+4.5%
35	Beauregard Parish	67.8	+4.3%
37	Rapides Parish	67.7	+4.6%
38	Madison Parish	67.5	+5.6%
39	Concordia Parish	67.4	+5.1%
40	Tensas Parish	67.3	+5.2%
40	Vernon Parish	67.3	+4.5%
42	Natchitoches Parish	67.2	+4.5%
43	Catahoula Parish	67.1	+5%
43	Grant Parish	67.1	+4.7%
45	LaSalle Parish	66.9	+4.5%
46	Franklin Parish	66.8	+5.5%
46	Sabine Parish	66.8	+4.5%
48	Red River Parish	66.6	+4.4%
48	Winn Parish	66.6	+4.7%
50	East Carroll Parish	66.4	+5.1%
51	Caldwell Parish	66.2	+5.1%
51	De Soto Parish	66.2	+4.1%
53	Richland Parish	66.1	+5.3%
54	Bienville Parish	66	+4.4%
54	Caddo Parish	66	+3.8%
56	West Carroll Parish	65.9	+5.1%
57	Jackson Parish	65.8	+4.9%
58	Bossier Parish	65.7	+4.1%
59	Ouachita Parish	65.4	+5.1%
60	Lincoln Parish	65.3	+5%
61	Morehouse Parish	65.2	+5.2%
61	Webster Parish	65.2	+4%
63	Union Parish	64.9	+5.2%
64	Claiborne Parish	64.6	+4.2%

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, 2015) [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, 2015. 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=2015. 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, 2015. 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=2015.

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, 2015 [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=2015 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_louisiana_by_2015,
  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, 2015}},
  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=2015. 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, 2015
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=2015
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/louisiana-counties?period=2015.
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 71.7 °F in 2015, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Claiborne Parish, with 64.6 °F in 2015.

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.