Counties in Colorado by average annual temperature, 2025

Prowers County had the highest average annual temperature of 64 counties in 2025, at 55.5 °F. San Juan County had the lowest, at 35.5 °F. The median was 47.5 °F and the figure for Colorado was 47.7 °F. Source: NOAA National Centers for Environmental Information.

Highest55.5Prowers County

Lowest35.5San Juan County

Median47.564 counties

Colorado47.7History

Top 40 counties, 2025

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

Full ranking

Rank	Counties	2025 °F	Change on 2024
1	Prowers County	55.5	-1.1%
2	Bent County	55.2	-1.3%
3	Baca County	54.8	-1.6%
3	Otero County	54.8	-1.4%
5	Kiowa County	54.2	-1.3%
5	Pueblo County	54.2	-0.7%
7	Crowley County	53.9	-0.9%
8	Cheyenne County	53.2	-1.7%
9	Yuma County	53.1	-1.3%
10	Denver County	53	-0.6%
11	Broomfield County	52.9	0%
12	Kit Carson County	52.7	-2%
13	Las Animas County	52.3	-0.6%
14	Phillips County	52.2	-1.5%
15	Sedgwick County	52	-1.5%
16	Adams County	51.6	-1.5%
16	Morgan County	51.6	-1.3%
18	Logan County	51.5	-1.7%
19	Lincoln County	51.4	-2.5%
20	Washington County	51.3	-2.1%
21	Montezuma County	51.2	+1%
22	Arapahoe County	51.1	-1.9%
23	Weld County	50.7	-1.7%
24	Mesa County	50.5	+1.2%
24	Montrose County	50.5	+2%
26	El Paso County	49.9	-1.8%
27	Elbert County	49.6	-2.6%
28	Douglas County	49.4	0%
29	Huerfano County	49	+0.6%
30	Delta County	48.8	+0.8%
31	Jefferson County	48.4	+0.2%
32	Fremont County	47.5	+0.4%
33	Moffat County	47.4	+2.6%
34	Rio Blanco County	47.3	+1.9%
35	La Plata County	47.1	+1.5%
36	San Miguel County	46.8	+1.1%
37	Boulder County	46.3	+0.2%
37	Garfield County	46.3	+2.4%
39	Alamosa County	45.8	+1.6%
40	Archuleta County	45.3	+0.2%
40	Dolores County	45.3	+1.8%
42	Larimer County	44.4	+0.5%
43	Ouray County	43.9	+0.7%
44	Custer County	43.7	+1.2%
45	Costilla County	43	+0.2%
46	Teller County	42.6	+0.9%
47	Conejos County	42	+1.2%
48	Rio Grande County	41.9	+0.7%
48	Saguache County	41.9	+2.7%
50	Routt County	41.3	+1%
51	Eagle County	41.2	+2.2%
52	Gilpin County	41.1	+1%
53	Gunnison County	40	+2%
54	Park County	39.8	+1.3%
55	Chaffee County	39.6	+1.5%
56	Pitkin County	39.5	+2.9%
57	Grand County	38.9	+1.8%
58	Clear Creek County	38.8	+1%
59	Jackson County	38.1	+1.9%
60	Mineral County	37.4	+0.3%
61	Hinsdale County	36.9	+1.1%
61	Summit County	36.9	+1.9%
63	Lake County	35.7	+1.1%
64	San Juan County	35.5	+0.6%

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 Colorado by average annual temperature, 2025) [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 Colorado by average annual temperature, 2025. 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/colorado-counties. 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 Colorado by average annual temperature, 2025. 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/colorado-counties.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Colorado by average annual temperature, 2025 [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/colorado-counties (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_colorado_by_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Colorado by average annual temperature, 2025}},
  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/colorado-counties. 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 Colorado by average annual temperature, 2025
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/colorado-counties
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/colorado-counties.
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?

Prowers County, with 55.5 °F in 2025, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

San Juan County, with 35.5 °F in 2025.

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.