Average annual temperature in Hamilton County

Average annual temperature in Hamilton County was 52.2 °F in 2025, according to NOAA National Centers for Environmental Information. That is down 4% from 2024. That is the 50th highest of 92 counties in 2025.

2025, °F52.2

Change on 2024-4%

Rank50th of 92Counties in Indiana ranked

Series high54.51998

Series low48.11978

Next release: Wednesday, 6 October 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

Average annual temperature in Hamilton County, 1950 to 2025

°F. Source: NOAA NCEI, NOAA Climate at a Glance, January to December average temperature, counties. Retrieved 2026-10-12, published 2026-10-06.

All 76 values

Period	°F
2025	52.2
2024	54.4
2023	53.8
2022	51.5
2021	52.8
2020	52.8
2019	51.7
2018	52.1
2017	53.5
2016	53.7
2015	51.6
2014	48.6
2013	50.7
2012	54.5
2011	52.5
2010	51.9
2009	50.5
2008	50.6
2007	52.8
2006	53
2005	52.2
2004	51.9
2003	50.5
2002	52.7
2001	52.9
2000	50.9
1999	52.7
1998	54.5
1997	49.9
1996	49.3
1995	51
1994	50.9
1993	50.2
1992	50.9
1991	53.3
1990	52.8
1989	49.7
1988	50.7
1987	52.7
1986	51.8
1985	50.6
1984	50.7
1983	51.4
1982	50.1
1981	50.2
1980	50
1979	48.4
1978	48.1
1977	50.4
1976	49.5
1975	51.4
1974	50.7
1973	52.3
1972	49.5
1971	50.8
1970	50.2
1969	49.4
1968	50.2
1967	49.9
1966	49.6
1965	51
1964	51.3
1963	48.9
1962	49.9
1961	50.2
1960	49.4
1959	51.7
1958	48.9
1957	51.1
1956	51.7
1955	51.6
1954	52.7
1953	52.7
1952	51.9
1951	49.9
1950	49.6

Compared with Indiana and United States

Place	2025
Hamilton County	52.2
Indiana	52.8
United States	54.6

Hamilton County compared with nearby places

Under 51
51 to 52
52 to 54
54 to 55
55 and over

Average annual temperature, 2025, °F. Hamilton County is outlined. Same source and period for every area shown. Source: NOAA National Centers for Environmental Information. Boundaries: U.S. Census Bureau cartographic boundary files.

Rankings

US states by average annual temperature 50 places
Counties in Indiana by average annual temperature 92 places

Definition

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.

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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 (Average annual temperature, Hamilton County, 1950 to 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, Average annual temperature, Hamilton County, 1950 to 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/en/average-annual-temperature/hamilton-county-indiana. 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. Average annual temperature, Hamilton County, 1950 to 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/en/average-annual-temperature/hamilton-county-indiana.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Average annual temperature, Hamilton County, 1950 to 2025 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/en/average-annual-temperature/hamilton-county-indiana (Accessed: 12 October 2026).

BibTeX

@misc{noaa_average_annual_temperature_hamilton_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Average annual temperature, Hamilton County, 1950 to 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/en/average-annual-temperature/hamilton-county-indiana. 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: Average annual temperature, Hamilton County, 1950 to 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/en/average-annual-temperature/hamilton-county-indiana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/average-annual-temperature/hamilton-county-indiana.
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

What is the average annual temperature in Hamilton County?

Where does this figure come from?

NOAA National Centers for Environmental Information. NOAA Climate at a Glance, January to December average temperature, counties. Retrieved by Invokely on 2026-10-12.

What was the highest average annual temperature in Hamilton County?

54.5 °F in 1998, the highest value since 1950 in this series.

Related statistics for Hamilton County

All statistics for Hamilton County | Hamilton County in figures