Average annual temperature in Fallon County

Average annual temperature in Fallon County was 44.8 °F in 2025, according to NOAA National Centers for Environmental Information. That is down 3% from 2024. That is the 18th highest of 56 counties in 2025.

2025, °F44.8

Change on 2024-3%

Rank18th of 56Counties in Montana ranked

Series high472012

Series low38.81951

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 Fallon 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	44.8
2024	46.2
2023	45
2022	42.8
2021	46
2020	45
2019	40.7
2018	41.8
2017	44.5
2016	46.4
2015	45.9
2014	42.2
2013	43
2012	47
2011	42.5
2010	42.2
2009	41.7
2008	41.9
2007	45.4
2006	46.1
2005	44.6
2004	43.8
2003	44.3
2002	43.2
2001	44.5
2000	43.5
1999	45.7
1998	45
1997	43.6
1996	39.6
1995	43.3
1994	43.4
1993	40.4
1992	44.4
1991	44.7
1990	45
1989	42.1
1988	45.9
1987	46.4
1986	44.2
1985	40.5
1984	43.1
1983	43.4
1982	40.1
1981	45.9
1980	44.4
1979	41
1978	39.7
1977	43.4
1976	44.3
1975	41.4
1974	43.6
1973	43.6
1972	40.8
1971	41.6
1970	41.5
1969	41.3
1968	42
1967	42.5
1966	41.9
1965	40.3
1964	42
1963	44.4
1962	43.1
1961	43.9
1960	42.5
1959	41.5
1958	43.7
1957	42.7
1956	43.3
1955	41.5
1954	44
1953	45.2
1952	42.9
1951	38.8
1950	39.3

Compared with Montana and United States

Place	2025
Fallon County	44.8
Montana	43.9
United States	54.6

Fallon County compared with nearby places

Under 42
42 to 43
43 to 44
44 to 45
45 to 46
46 and over

Average annual temperature, 2025, °F. Fallon 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 Montana by average annual temperature 56 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, Fallon 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, Fallon 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/fallon-county-montana. 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, Fallon 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/fallon-county-montana.

Harvard

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

BibTeX

@misc{noaa_average_annual_temperature_fallon_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Average annual temperature, Fallon 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/fallon-county-montana. 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, Fallon 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/fallon-county-montana
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/average-annual-temperature/fallon-county-montana.
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 Fallon 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 Fallon County?

47 °F in 2012, the highest value since 1950 in this series.

Related statistics for Fallon County

All statistics for Fallon County | Fallon County in figures