Counties in North Dakota by average annual temperature

Sioux County had the highest average annual temperature of 53 counties in 2018, at 41.8 °F. Rolette County had the lowest, at 37 °F. The median was 39.7 °F and the figure for North Dakota was 39.8 °F. Source: NOAA National Centers for Environmental Information.

Highest41.8Sioux County

Lowest37Rolette County

Median39.753 counties

North Dakota39.8History

Map of counties, 2018

Under 38
38 to 39
39 to 40
40 to 41
41 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.

All 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	Sioux County	41.8	-4.8%
2	Richland County	41.6	-5.7%
3	Grant County	41.5	-5%
4	Adams County	41.3	-5.5%
4	Slope County	41.3	-5.3%
6	Dickey County	41.2	-5.1%
7	Billings County	41.1	-5.1%
7	Bowman County	41.1	-5.9%
7	Golden Valley County	41.1	-5.7%
7	Morton County	41.1	-5.1%
11	Emmons County	41	-5.3%
11	Hettinger County	41	-5.1%
13	Ransom County	40.9	-5.8%
13	Sargent County	40.9	-6.8%
13	Stark County	40.9	-4.9%
16	Dunn County	40.8	-4.4%
16	LaMoure County	40.8	-5.3%
16	Mercer County	40.8	-4.9%
19	Cass County	40.6	-5.8%
19	Oliver County	40.6	-5.4%
21	McKenzie County	40.5	-6%
22	Burleigh County	40.3	-5.6%
23	McLean County	40.2	-5.2%
24	Barnes County	40.1	-5.4%
25	Traill County	39.9	-5.2%
26	Logan County	39.7	-5.5%
26	McIntosh County	39.7	-6.1%
26	Stutsman County	39.7	-5.5%
29	Sheridan County	39.6	-5.5%
30	Grand Forks County	39.4	-5.5%
31	McHenry County	39.3	-4.8%
32	Foster County	39.2	-4.9%
32	Kidder County	39.2	-5.8%
32	Pembina County	39.2	-3.7%
32	Ward County	39.2	-5.8%
32	Williams County	39.2	-7.3%
37	Eddy County	39.1	-4.6%
38	Walsh County	39	-4.2%
39	Griggs County	38.9	-5.1%
39	Mountrail County	38.9	-5.6%
39	Steele County	38.9	-4.9%
42	Wells County	38.8	-5.1%
43	Benson County	38.7	-4.7%
44	Nelson County	38.3	-4.7%
44	Pierce County	38.3	-4.7%
44	Ramsey County	38.3	-4.5%
44	Renville County	38.3	-5.9%
48	Bottineau County	38.1	-5%
49	Divide County	37.6	-8.1%
50	Towner County	37.5	-4.6%
51	Cavalier County	37.3	-4.1%
52	Burke County	37.2	-6.5%
53	Rolette County	37	-4.6%

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 North Dakota 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 North Dakota 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/north-dakota-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 North Dakota 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/north-dakota-counties?period=2018.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in North Dakota 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/north-dakota-counties?period=2018 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_north_dakota_2018,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in North Dakota 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/north-dakota-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 North Dakota 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/north-dakota-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/north-dakota-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  -

Embed this chart

Paste this code into a web page or a blog post. The chart shows the latest figures as they are published, with the source and a link back to this page.

Embed code

<iframe src="https://invokely.ai/embed/rankings/average-annual-temperature/north-dakota-counties?period=2018" width="760" height="500" title="Counties in North Dakota by average annual temperature, 2018, chart from Invokely" loading="lazy" style="border:0;width:100%;max-width:760px" referrerpolicy="strict-origin-when-cross-origin"></iframe>

Sites that read oEmbed links, such as WordPress, can show the chart when you paste the link to this page.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in North Dakota by average annual temperature using official data, and cite the source.

rank_places {"indicator":"average_temperature_annual","level":"province","within":"North Dakota","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=average_temperature_annual&level=province&within=North%20Dakota&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest average annual temperature?

Sioux County, with 41.8 °F in 2018, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Rolette County, with 37 °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.