Counties in Maryland by annual precipitation

Carroll County had the highest annual precipitation of 24 counties in 2019, at 49.14 inches. Queen Anne's County had the lowest, at 35.93 inches. The median was 41.96 inches and the figure for Maryland was 42.7 inches. Source: NOAA National Centers for Environmental Information.

Highest49.14Carroll County

Lowest35.93Queen Anne's County

Median41.9624 counties

Maryland42.7History

Map of counties, 2019

Under 38
38 to 41
41 to 44
44 to 45
45 and over

inches, 2019. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2019

inches. Source: NOAA NCEI, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.

Full ranking

Rank	Counties	2019 inches	Change on 2018
1	Carroll County	49.14	-29.6%
2	Frederick County	48.94	-27.9%
3	Garrett County	48.5	-32.7%
4	Baltimore County	46.69	-36.2%
5	Washington County	45.14	-31.6%
6	Cecil County	45.06	-28.1%
7	Harford County	45.01	-29.4%
8	Howard County	44.53	-36.2%
9	Baltimore city	44.16	-40.2%
10	Montgomery County	44.09	-31.4%
11	Worcester County	42.75	-21.9%
12	Prince George's County	42.29	-38.7%
13	Somerset County	41.63	-20.4%
14	Charles County	40.9	-38.8%
15	Allegany County	40.66	-40.2%
16	Calvert County	40.19	-41.8%
17	St. Mary's County	40.02	-41.3%
18	Wicomico County	39.65	-26.6%
19	Anne Arundel County	38.72	-43.6%
20	Dorchester County	37.99	-34.1%
21	Caroline County	37.63	-35.8%
22	Kent County	37.5	-35.3%
23	Talbot County	36.87	-37.3%
24	Queen Anne's County	35.93	-40.2%

Other periods

About this ranking

Total precipitation from January to December, in inches: rain plus the water content of snow and other frozen precipitation. 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, not the reading at one weather station. NOAA revises the last two years every month.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, 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 precipitation, counties (Counties in Maryland by annual precipitation, 2019) [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 precipitation, counties, Counties in Maryland by annual precipitation, 2019. 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/rankings/annual-precipitation/maryland-counties?period=2019. Accessed 12 Oct. 2026.

Chicago (author-date)

NOAA National Centers for Environmental Information. 2026. NOAA Climate at a Glance, January to December precipitation, counties. Counties in Maryland by annual precipitation, 2019. 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/rankings/annual-precipitation/maryland-counties?period=2019.

Harvard

NOAA National Centers for Environmental Information (2026) NOAA Climate at a Glance, January to December precipitation, counties, Counties in Maryland by annual precipitation, 2019 [Dataset]. Available at: https://www.ncei.noaa.gov/access/monitoring/climate-at-a-glance/county/mapping, via Invokely: https://invokely.ai/rankings/annual-precipitation/maryland-counties?period=2019 (Accessed: 12 October 2026).

BibTeX

@misc{noaa_counties_in_maryland_by_2019,
  author = {{NOAA National Centers for Environmental Information}},
  title = {{NOAA Climate at a Glance, January to December precipitation, counties: Counties in Maryland by annual precipitation, 2019}},
  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/rankings/annual-precipitation/maryland-counties?period=2019. Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, 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 precipitation, counties: Counties in Maryland by annual precipitation, 2019
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/rankings/annual-precipitation/maryland-counties?period=2019
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/rankings/annual-precipitation/maryland-counties?period=2019.
N1  - Publisher attribution: NOAA National Centers for Environmental Information, Climate at a Glance. NOAA Climate at a Glance, January to December precipitation, 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

Which county has the highest annual precipitation?

Carroll County, with 49.14 inches in 2019, according to NOAA National Centers for Environmental Information.

Which county has the lowest annual precipitation?

Queen Anne's County, with 35.93 inches in 2019.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: NOAA National Centers for Environmental Information, NOAA Climate at a Glance, January to December precipitation, counties. Retrieved 2026-10-12.