Counties in Michigan by average annual temperature

Monroe County had the highest average annual temperature of 83 counties in 2020, at 52.2 °F. Iron County had the lowest, at 40.3 °F. The median was 47.7 °F and the figure for Michigan was 46.5 °F. Source: NOAA National Centers for Environmental Information.

Highest52.2Monroe County

Lowest40.3Iron County

Median47.783 counties

Michigan46.5History

Map of counties, 2020

Under 44
44 to 46
46 to 48
48 to 49
49 to 50
50 and over

°F, 2020. 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, 2020

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

Full ranking

Rank	Counties	2020 °F	Change on 2019
1	Monroe County	52.2	+3%
2	Wayne County	51.6	+3.6%
3	Berrien County	51.3	+4.9%
4	Macomb County	51.2	+4.3%
5	Lenawee County	50.7	+2.8%
6	Cass County	50.6	+4.3%
6	St. Clair County	50.6	+4.3%
8	Van Buren County	50.4	+3.5%
9	St. Joseph County	50.3	+3.7%
10	Genesee County	50.2	+5.7%
11	Kalamazoo County	50.1	+3.5%
11	Oakland County	50.1	+4.4%
13	Saginaw County	50	+5.5%
14	Allegan County	49.9	+3.1%
14	Washtenaw County	49.9	+2.9%
16	Branch County	49.8	+3.3%
16	Shiawassee County	49.8	+5.1%
18	Calhoun County	49.7	+3.3%
18	Lapeer County	49.7	+4.9%
18	Ottawa County	49.7	+4.2%
21	Hillsdale County	49.6	+3.3%
22	Clinton County	49.5	+4.2%
22	Gratiot County	49.5	+5.3%
22	Livingston County	49.5	+4.2%
22	Tuscola County	49.5	+5.8%
26	Barry County	49.4	+3.8%
26	Bay County	49.4	+6%
26	Eaton County	49.4	+3.8%
26	Jackson County	49.4	+2.9%
30	Ingham County	49.3	+3.6%
30	Midland County	49.3	+6%
30	Sanilac County	49.3	+5.8%
33	Muskegon County	49.2	+5.1%
34	Ionia County	49.1	+4.2%
35	Kent County	49	+4.3%
36	Huron County	48.9	+7.5%
37	Isabella County	48.5	+6.4%
38	Montcalm County	48.4	+5.2%
39	Arenac County	48.1	+6.9%
40	Gladwin County	47.8	+6.9%
41	Newaygo County	47.7	+5.5%
41	Oceana County	47.7	+5.3%
43	Mecosta County	47.3	+6.3%
44	Iosco County	47	+7.1%
45	Clare County	46.9	+7.1%
46	Grand Traverse County	46.7	+6.9%
46	Leelanau County	46.7	+6.6%
48	Benzie County	46.6	+6.6%
48	Lake County	46.6	+5.9%
48	Mason County	46.6	+5%
51	Manistee County	46.4	+5.5%
51	Ogemaw County	46.4	+7.4%
53	Osceola County	46.2	+7.2%
54	Roscommon County	46	+7%
55	Wexford County	45.9	+7%
56	Antrim County	45.8	+7.3%
56	Missaukee County	45.8	+7.3%
58	Alpena County	45.7	+7.5%
58	Charlevoix County	45.7	+7.5%
60	Alcona County	45.6	+7.3%
60	Kalkaska County	45.6	+7%
62	Oscoda County	45.2	+7.4%
63	Presque Isle County	45.1	+7.4%
64	Crawford County	45	+7.1%
64	Emmet County	45	+7.4%
66	Montmorency County	44.9	+7.7%
67	Cheboygan County	44.8	+7.7%
68	Otsego County	44	+7.6%
69	Menominee County	43.9	+7.1%
70	Delta County	43.4	+6.9%
71	Mackinac County	43.2	+8.3%
72	Schoolcraft County	42.9	+7%
73	Chippewa County	42.6	+9%
74	Houghton County	42.2	+7.4%
75	Alger County	42.1	+6.6%
75	Dickinson County	42.1	+7.4%
77	Keweenaw County	42	+8%
78	Luce County	41.9	+8.5%
79	Ontonagon County	41.8	+7.7%
80	Marquette County	41.2	+7.3%
81	Baraga County	40.8	+7.4%
82	Gogebic County	40.5	+7.1%
83	Iron County	40.3	+7.2%

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 Michigan by average annual temperature, 2020) [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 Michigan by average annual temperature, 2020. 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/michigan-counties?period=2020. 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 Michigan by average annual temperature, 2020. 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/michigan-counties?period=2020.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Counties in Michigan by average annual temperature, 2020 [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/michigan-counties?period=2020 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_michigan_by_2020,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Counties in Michigan by average annual temperature, 2020}},
  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/michigan-counties?period=2020. 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 Michigan by average annual temperature, 2020
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/michigan-counties?period=2020
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/average-annual-temperature/michigan-counties?period=2020.
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?

Monroe County, with 52.2 °F in 2020, according to NOAA National Centers for Environmental Information.

Which county has the lowest average annual temperature?

Iron County, with 40.3 °F in 2020.

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.