Average annual temperature in Washington County

Average annual temperature in Washington County was 54 °F in 2025, according to NOAA National Centers for Environmental Information. That is down 3.1% from 2024. That is the 21st highest of 24 counties in 2025.

2025, °F54

Change on 2024-3.1%

Rank21st of 24Counties in Maryland ranked

Series high55.81998

Series low50.51958

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 Washington 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	54
2024	55.7
2023	55.1
2022	53.5
2021	54.8
2020	55.2
2019	54.4
2018	54
2017	55
2016	54.9
2015	53.8
2014	51.9
2013	53
2012	55.6
2011	54.6
2010	54.1
2009	52.8
2008	53.2
2007	54.2
2006	55
2005	53.8
2004	53.7
2003	52.1
2002	54.5
2001	53.9
2000	52.6
1999	54
1998	55.8
1997	52.5
1996	51.4
1995	52.4
1994	52.6
1993	52.6
1992	51.6
1991	54.9
1990	54.8
1989	51.6
1988	52.3
1987	53.3
1986	53
1985	52.9
1984	52.4
1983	52.5
1982	52
1981	51.5
1980	51.8
1979	51.2
1978	50.6
1977	52.2
1976	51.3
1975	52.7
1974	52.6
1973	53.4
1972	51.4
1971	52.2
1970	52.2
1969	51.6
1968	51.8
1967	51
1966	51.5
1965	52.4
1964	52.3
1963	50.9
1962	51
1961	51.9
1960	51
1959	53.4
1958	50.5
1957	53
1956	52
1955	52.4
1954	52.8
1953	54
1952	53
1951	52.2
1950	51.6

Compared with Maryland and United States

Place	2025
Washington County	54
Maryland	55.7
United States	54.6

Washington County compared with nearby places

Under 55
55 to 56
56 to 57
57 and over

Average annual temperature, 2025, °F. Washington 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 Maryland by average annual temperature 24 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, Washington 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, Washington 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/washington-county-maryland. 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, Washington 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/washington-county-maryland.

Harvard

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

BibTeX

@misc{noaa_average_annual_temperature_washington_2025,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December average temperature, counties: Average annual temperature, Washington 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/washington-county-maryland. 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, Washington 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/washington-county-maryland
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/average-annual-temperature/washington-county-maryland.
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 Washington 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 Washington County?

55.8 °F in 1998, the highest value since 1950 in this series.

Related statistics for Washington County

All statistics for Washington County | Washington County in figures