Average annual temperature in Fulton County

Average annual temperature in Fulton County was 53.4 °F in 2025, according to NOAA National Centers for Environmental Information. That is down 3.4% from 2024. That is the 57th highest of 102 counties in 2025.

2025, °F53.4

Change on 2024-3.4%

Rank57th of 102Counties in Illinois ranked

Series high55.32024

Series low48.72014

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 Fulton 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	53.4
2024	55.3
2023	54.5
2022	51.4
2021	53.3
2020	52.6
2019	51.3
2018	51.9
2017	53.8
2016	54
2015	52.6
2014	48.7
2013	50.1
2012	54.9
2011	52.2
2010	52
2009	50.7
2008	50.1
2007	52.9
2006	53.6
2005	53.4
2004	51.9
2003	51.1
2002	52.6
2001	53
2000	51.6
1999	52.7
1998	54.7
1997	50.7
1996	49.5
1995	50.8
1994	51.5
1993	50.1
1992	51.3
1991	52.9
1990	52.8
1989	49.7
1988	51.7
1987	53.9
1986	52.3
1985	49.9
1984	51.3
1983	51.8
1982	50
1981	51.3
1980	50.8
1979	48.9
1978	48.9
1977	51
1976	50.1
1975	51.3
1974	51.1
1973	52.2
1972	49.7
1971	51.8
1970	50.7
1969	49.9
1968	50.7
1967	49.8
1966	50.1
1965	51.1
1964	52.1
1963	50.6
1962	50.5
1961	50.5
1960	49.7
1959	51.5
1958	49.9
1957	51.7
1956	52.6
1955	52
1954	53.4
1953	53.3
1952	52.2
1951	49.6
1950	49.5

Compared with Illinois and United States

Place	2025
Fulton County	53.4
Illinois	53.6
United States	54.6

Rankings

US states by average annual temperature 50 places
Counties in Illinois by average annual temperature 102 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.

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, Fulton 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, Fulton 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/fulton-county-illinois. 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, Fulton 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/fulton-county-illinois.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December average temperature, counties, Average annual temperature, Fulton 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/fulton-county-illinois (Accessed: 12 October 2026).

BibTeX

@misc{noaa_average_annual_temperature_fulton_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Average annual temperature, Fulton 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/fulton-county-illinois. 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, Fulton 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/fulton-county-illinois
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/average-annual-temperature/fulton-county-illinois.
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 Fulton 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 Fulton County?

55.3 °F in 2024, the highest value since 1950 in this series.

Related statistics for Fulton County

All statistics for Fulton County | Fulton County in figures