Counties in Utah by average annual temperature

Washington County had the highest average annual temperature of 29 counties in 2018, at 57.3 °F. Summit County had the lowest, at 40.3 °F. The median was 49.7 °F and the figure for Utah was 50.4 °F. Source: NOAA National Centers for Environmental Information.

Highest57.3Washington County

Lowest40.3Summit County

Median49.729 counties

Utah50.4History

Map of counties, 2018

Under 45
45 to 48
48 to 51
51 to 52
52 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	Washington County	57.3	-0.7%
2	San Juan County	54.7	-0.9%
3	Kane County	54.3	-0.9%
4	Grand County	53	-1.5%
5	Wayne County	52.9	-1.3%
6	Emery County	52.3	-0.6%
7	Millard County	52.2	-0.8%
8	Tooele County	51.8	0%
9	Juab County	51.4	-0.4%
10	Davis County	51.3	-0.2%
11	Salt Lake County	51.2	0%
12	Beaver County	50.7	-1.2%
13	Iron County	50.6	-0.6%
14	Garfield County	50.5	-1.4%
15	Box Elder County	49.7	+1%
16	Utah County	48.4	-0.4%
17	Uintah County	48.2	0%
18	Weber County	47.9	+0.2%
19	Carbon County	46.6	-0.4%
20	Sevier County	46.5	-1.3%
21	Sanpete County	46	-0.9%
22	Morgan County	45.9	-0.2%
23	Piute County	45.4	-2.2%
24	Cache County	45.3	+0.9%
25	Duchesne County	44	-0.2%
26	Wasatch County	42.8	-0.9%
27	Daggett County	42.7	0%
28	Rich County	42.2	+1%
29	Summit County	40.3	-1.2%

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 Utah 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 Utah 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/utah-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 Utah 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/utah-counties?period=2018.

Harvard

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

BibTeX

@misc{noaa_counties_in_utah_by_2018,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Utah 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/utah-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 Utah 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/utah-counties?period=2018
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/utah-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/utah-counties?period=2018" width="760" height="500" title="Counties in Utah 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 Utah by average annual temperature using official data, and cite the source.

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

Washington County, with 57.3 °F in 2018, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Summit County, with 40.3 °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.