Average annual temperature in Custer County

Average annual temperature in Custer County was 40.2 °F in 2025, according to NOAA National Centers for Environmental Information. That is unchanged from 2024. That is the 44th highest of 44 counties in 2025.

2025, °F40.2

Change on 20240%

Rank44th of 44Counties in Idaho ranked

Series high412015

Series low351955

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 Custer 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	40.2
2024	40.2
2023	37.9
2022	38.6
2021	40
2020	39
2019	37.6
2018	39.1
2017	39.1
2016	39.6
2015	41
2014	39.9
2013	38.6
2012	39.5
2011	37.2
2010	37.7
2009	37.5
2008	37.3
2007	39.7
2006	38.6
2005	38.5
2004	39
2003	39.8
2002	37.8
2001	39.2
2000	38.8
1999	38.2
1998	38.5
1997	37.7
1996	38
1995	38.1
1994	38.8
1993	35.9
1992	39.7
1991	38
1990	37.9
1989	38
1988	39.2
1987	39.4
1986	38.9
1985	35.1
1984	35.2
1983	37.1
1982	35.4
1981	39.2
1980	38.1
1979	37.1
1978	37.1
1977	37.9
1976	37
1975	35.5
1974	37.7
1973	37.2
1972	37
1971	36
1970	37
1969	37.4
1968	36.7
1967	37.9
1966	38
1965	36.6
1964	35.1
1963	38.1
1962	37
1961	38.2
1960	36.7
1959	37.4
1958	38.3
1957	36.4
1956	36.2
1955	35
1954	38
1953	38.7
1952	35.5
1951	35.4
1950	36.8

Compared with Idaho and United States

Place	2025
Custer County	40.2
Idaho	45.9
United States	54.6

Rankings

US states by average annual temperature 50 places
Counties in Idaho by average annual temperature 44 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, Custer 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, Custer 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/custer-county-idaho. 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, Custer 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/custer-county-idaho.

Harvard

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

BibTeX

@misc{noaa_average_annual_temperature_custer_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Average annual temperature, Custer 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/custer-county-idaho. 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, Custer 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/custer-county-idaho
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/average-annual-temperature/custer-county-idaho.
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 Custer 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 Custer County?

41 °F in 2015, the highest value since 1950 in this series.

Related statistics for Custer County

All statistics for Custer County | Custer County in figures